Tribology International最新文献_第2页

Polarity-dependent wear in electrified steel-steel contacts with polyalphaolefin and fatty acid/phosphate additives 含聚α -烯烃和脂肪酸/磷酸盐添加剂的电气化钢-钢接触的极性依赖磨损

IF 6.1 1区工程技术 Q1 ENGINEERING, MECHANICAL

Tribology International

Pub Date : 2026-07-01 Epub Date: 2026-02-10 DOI: 10.1016/j.triboint.2026.111825

Amel Krishnan , Pramoda K. Nayak , M. Kamaraj , Sundara Ramaprabhu

Lubricated contacts in electric vehicles (EVs) face unique challenges in the boundary lubrication regime due to stray currents in the powertrain, which accelerate wear and cause premature failure. Understanding how electric current influences the wear behaviour of base oils and additive formulations is therefore essential for developing reliable EV lubricants. Here, we systematically study the effect of DC current polarity on anodic and cathodic wear for steel/steel sliding contacts lubricated with non-polar polyalphaolefin (PAO) base oil, with and without additives containing long monofunctional alkyl chains (oleic acid and dioctyl phosphate), using a customized ball-on-disk tribometer. With PAO, wear was strongly polarity-dependent, with severe wear observed at the cathode sliding interface due to abrasion by oxide films formed preferentially at the anode sliding contact. Adding oleic acid reduced the total wear by 60.5–83.3 % through the formation of amorphous carbon films at the anode, which reduced the cathodic abrasion, though the polarity-dependent trend persisted. In contrast, dioctyl phosphate reversed this trend, with higher anode wear and cathode protection through a phosphate-based transfer film, reducing total wear by 35.8–60.9 % when compared to base oil. Despite the wear reductions by carboxyl and phosphate additive groups, the wear under electrified sliding remained higher than that under non-electrified sliding, highlighting the requirement for more advanced additive chemistries. This study elucidates the polarity-dependent wear behaviour under electrified boundary lubrication and supports the development of high-performance lubricant formulations based on fatty acid and alkyl phosphate additives for EV powertrain applications.

电动汽车的润滑触点在边界润滑方面面临着独特的挑战，因为动力系统中的杂散电流会加速磨损并导致过早失效。因此，了解电流如何影响基础油和添加剂配方的磨损行为对于开发可靠的电动汽车润滑油至关重要。在这里，我们系统地研究了直流电流极性对用非极性聚α -烯烃（PAO）基础油润滑的钢/钢滑动触点的阳极和阴极磨损的影响，并使用定制的球盘式摩擦计，研究了是否添加含有长单功能烷基链（油酸和磷酸二辛酯）的添加剂。对于PAO，磨损是强烈的极性依赖，在阴极滑动界面观察到严重的磨损，这是由于在阳极滑动接触处优先形成的氧化膜的磨损。通过在阳极处形成非晶碳膜，油酸的加入使总磨损降低了60.5 ~ 83.3 %，减少了阴极磨损，但极性依赖的趋势仍然存在。相比之下，磷酸二辛酯扭转了这一趋势，通过磷酸基转移膜具有更高的阳极磨损和阴极保护，与基础油相比，总磨损降低了35.8-60.9 %。尽管羧基和磷酸盐添加剂减少了磨损，但带电滑动时的磨损仍然高于非带电滑动时的磨损，这表明需要更先进的添加剂化学成分。该研究阐明了电气化边界润滑下的极性依赖磨损行为，并为基于脂肪酸和磷酸烷基添加剂的高性能电动汽车动力总成润滑油配方的开发提供了支持。

{"title":"Polarity-dependent wear in electrified steel-steel contacts with polyalphaolefin and fatty acid/phosphate additives","authors":"Amel Krishnan , Pramoda K. Nayak , M. Kamaraj , Sundara Ramaprabhu","doi":"10.1016/j.triboint.2026.111825","DOIUrl":"10.1016/j.triboint.2026.111825","url":null,"abstract":"<div><div>Lubricated contacts in electric vehicles (EVs) face unique challenges in the boundary lubrication regime due to stray currents in the powertrain, which accelerate wear and cause premature failure. Understanding how electric current influences the wear behaviour of base oils and additive formulations is therefore essential for developing reliable EV lubricants. Here, we systematically study the effect of DC current polarity on anodic and cathodic wear for steel/steel sliding contacts lubricated with non-polar polyalphaolefin (PAO) base oil, with and without additives containing long monofunctional alkyl chains (oleic acid and dioctyl phosphate), using a customized ball-on-disk tribometer. With PAO, wear was strongly polarity-dependent, with severe wear observed at the cathode sliding interface due to abrasion by oxide films formed preferentially at the anode sliding contact. Adding oleic acid reduced the total wear by 60.5–83.3 % through the formation of amorphous carbon films at the anode, which reduced the cathodic abrasion, though the polarity-dependent trend persisted. In contrast, dioctyl phosphate reversed this trend, with higher anode wear and cathode protection through a phosphate-based transfer film, reducing total wear by 35.8–60.9 % when compared to base oil. Despite the wear reductions by carboxyl and phosphate additive groups, the wear under electrified sliding remained higher than that under non-electrified sliding, highlighting the requirement for more advanced additive chemistries. This study elucidates the polarity-dependent wear behaviour under electrified boundary lubrication and supports the development of high-performance lubricant formulations based on fatty acid and alkyl phosphate additives for EV powertrain applications.</div></div>","PeriodicalId":23238,"journal":{"name":"Tribology International","volume":"219 ","pages":"Article 111825"},"PeriodicalIF":6.1,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146192337","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Bias-induced sp³ bonding gradient design for enhancing the frictional bearing capacity of superhard Ta-C coating 提高超硬Ta-C涂层摩擦承载能力的偏压诱导sp³键合梯度设计

IF 6.1 1区工程技术 Q1 ENGINEERING, MECHANICAL

Tribology International

Pub Date : 2026-07-01 Epub Date: 2026-02-04 DOI: 10.1016/j.triboint.2026.111780

Zhengwei Wang , Zhehao Zhang , Jinghua Li , Yongyong He , Yang Li

Tetrahedral amorphous carbon (Ta-C) coatings are widely utilized for their exceptional hardness and superior wear resistance. However, under high-load sliding conditions, Ta-C coatings are often susceptible to severe spalling failure due to the inherent brittleness and high residual internal stress. To enhance the frictional load-bearing capacity, Ta-C coatings with graded sp³ bonding configurations were fabricated by precisely modulating the substrate bias during filtered cathodic vacuum arc (FCVA) deposition. In this study, three types of gradient structure and three constant structure coatings were prepared for comparative analysis. Compared with the constant structure, the gradient coatings feature multilayered interfaces with continuously transitioning bonding configurations and a high surface sp³ fraction, which leads to higher frictional bearing capacity. Notably, the gradient coating with a surface sp³ fraction of 83.7 % exhibited the highest hardness (55.3 GPa), elastic modulus (476.6 GPa), and optimized toughness and adhesion. Under lubricated sliding at a maximum initial Hertzian contact stress of 1028 MPa, the constant structure coatings suffered from comprehensive delamination. In contrast, the gradient coatings maintained their structural integrity, achieving an ultra-low friction coefficient of 0.033 with negligible wear. Microstructural analysis revealed that superlattice-like multilayer features within the gradient structure promote stress redistribution and crack deflection. This work demonstrates that the synergy of gradient bonding design and multilayer modulation provides an effective strategy to overcome the brittleness and load-bearing limitations of superhard Ta-C coatings in high load applications.

四面体非晶碳（Ta-C）涂层以其优异的硬度和耐磨性得到广泛应用。然而，在高载荷滑动条件下，Ta-C涂层由于其固有的脆性和高残余内应力，往往容易发生严重的剥落破坏。为了提高Ta-C涂层的摩擦承载能力，在过滤阴极真空电弧（FCVA）沉积过程中，通过精确调节衬底偏压，制备了具有梯度sp³ 键合结构的Ta-C涂层。本研究制备了三种梯度结构和三种恒定结构的涂层进行对比分析。与恒定结构相比，梯度涂层具有连续过渡键合构型的多层界面和高表面sp³ 分数，从而具有更高的摩擦承载能力。值得注意的是，表面sp³ 分数为83.7 %的梯度涂层具有最高的硬度（55.3 GPa）、弹性模量（476.6 GPa）和最佳的韧性和附着力。在最大初始赫兹接触应力为1028 MPa的润滑滑动条件下，恒结构涂层发生全面分层。相比之下，梯度涂层保持了结构的完整性，实现了0.033的超低摩擦系数，磨损可以忽略不计。显微组织分析表明，梯度结构内的超晶格状多层特征促进了应力重分布和裂纹挠曲。这项工作表明，梯度键合设计和多层调制的协同作用为克服高负载应用中超硬Ta-C涂层的脆性和承载限制提供了有效的策略。

{"title":"Bias-induced sp³ bonding gradient design for enhancing the frictional bearing capacity of superhard Ta-C coating","authors":"Zhengwei Wang , Zhehao Zhang , Jinghua Li , Yongyong He , Yang Li","doi":"10.1016/j.triboint.2026.111780","DOIUrl":"10.1016/j.triboint.2026.111780","url":null,"abstract":"<div><div>Tetrahedral amorphous carbon (Ta-C) coatings are widely utilized for their exceptional hardness and superior wear resistance. However, under high-load sliding conditions, Ta-C coatings are often susceptible to severe spalling failure due to the inherent brittleness and high residual internal stress. To enhance the frictional load-bearing capacity, Ta-C coatings with graded sp³ bonding configurations were fabricated by precisely modulating the substrate bias during filtered cathodic vacuum arc (FCVA) deposition. In this study, three types of gradient structure and three constant structure coatings were prepared for comparative analysis. Compared with the constant structure, the gradient coatings feature multilayered interfaces with continuously transitioning bonding configurations and a high surface sp³ fraction, which leads to higher frictional bearing capacity. Notably, the gradient coating with a surface sp³ fraction of 83.7 % exhibited the highest hardness (55.3 GPa), elastic modulus (476.6 GPa), and optimized toughness and adhesion. Under lubricated sliding at a maximum initial Hertzian contact stress of 1028 MPa, the constant structure coatings suffered from comprehensive delamination. In contrast, the gradient coatings maintained their structural integrity, achieving an ultra-low friction coefficient of 0.033 with negligible wear. Microstructural analysis revealed that superlattice-like multilayer features within the gradient structure promote stress redistribution and crack deflection. This work demonstrates that the synergy of gradient bonding design and multilayer modulation provides an effective strategy to overcome the brittleness and load-bearing limitations of superhard Ta-C coatings in high load applications.</div></div>","PeriodicalId":23238,"journal":{"name":"Tribology International","volume":"219 ","pages":"Article 111780"},"PeriodicalIF":6.1,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146192420","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Failure assessment of crack propagation in as-built LPBF 17–4PH stainless steel under rolling contact fatigue lpbf17 - 4ph不锈钢在轧制接触疲劳下裂纹扩展失效评估

IF 6.1 1区工程技术 Q1 ENGINEERING, MECHANICAL

Tribology International

Pub Date : 2026-07-01 Epub Date: 2026-02-05 DOI: 10.1016/j.triboint.2026.111789

Nicola Zani , Candida Petrogalli , Kang Shu , Angelo Mazzù , Giorgio Donzella

This work presents an integrated experimental–numerical study on the rolling contact fatigue (RCF) behaviour of as-built Laser Powder Bed Fused (L-PBF) 17–4PH stainless steel lubricated with water and oil. Controlled twin-disc tests, finite element analyses and modelling were combined to clarify the influence of lubrication on crack initiation and propagation mechanisms. Water-based lubrication promoted accelerated crack growth due to hydraulic pressurization and enhanced shear stresses, while oil lubrication provided a stable elastohydrodynamic separation, delaying crack initiation and mitigating branching. A novel predictive framework was formulated by incorporating elastohydrodynamic similarity parameters into a generalized crack-growth law, enabling the quantification of mechanical–tribological coupling effects. The proposed model exhibited strong agreement with experimental data (R² = 0.75, RMSE = 0.195), confirming the synergistic contribution of stress intensity and viscous dissipation in controlling fatigue damage evolution. Furthermore, the Failure Assessment Diagram (FAD) methodology was extended to account for finite-life and lubrication effects, successfully delineating the transition from crack arrest to propagation across pressure regimes. The developed approach provides a unified, physically consistent basis for assessing lubrication-dependent fatigue performance in additively manufactured steels, offering enhanced predictive capability for RCF design of AM components.

本文对水和油润滑的17-4PH激光熔粉床（L-PBF）不锈钢的滚动接触疲劳（RCF）行为进行了综合实验和数值研究。通过控制双盘试验、有限元分析和建模相结合，阐明了润滑对裂纹萌生和扩展机制的影响。由于水力增压和剪切应力的增加，水基润滑加速了裂缝的扩展，而油润滑提供了稳定的弹流分离，延迟了裂缝的起裂并减轻了分支。通过将弹性流体动力学相似参数纳入广义裂纹扩展规律，建立了一种新的预测框架，从而实现了力学-摩擦学耦合效应的量化。该模型与试验数据吻合较好（R²= 0.75,RMSE = 0.195），证实了应力强度和黏性耗散在控制疲劳损伤演化中的协同作用。此外，将失效评估图（FAD）方法扩展到有限寿命和润滑效应，成功地描述了从裂纹止裂到跨压力区扩展的转变。所开发的方法为评估增材制造钢材的润滑相关疲劳性能提供了统一的、物理一致的基础，为增材制造部件的RCF设计提供了增强的预测能力。

{"title":"Failure assessment of crack propagation in as-built LPBF 17–4PH stainless steel under rolling contact fatigue","authors":"Nicola Zani , Candida Petrogalli , Kang Shu , Angelo Mazzù , Giorgio Donzella","doi":"10.1016/j.triboint.2026.111789","DOIUrl":"10.1016/j.triboint.2026.111789","url":null,"abstract":"<div><div>This work presents an integrated experimental–numerical study on the rolling contact fatigue (RCF) behaviour of as-built Laser Powder Bed Fused (<span>L</span>-PBF) 17–4PH stainless steel lubricated with water and oil. Controlled twin-disc tests, finite element analyses and modelling were combined to clarify the influence of lubrication on crack initiation and propagation mechanisms. Water-based lubrication promoted accelerated crack growth due to hydraulic pressurization and enhanced shear stresses, while oil lubrication provided a stable elastohydrodynamic separation, delaying crack initiation and mitigating branching. A novel predictive framework was formulated by incorporating elastohydrodynamic similarity parameters into a generalized crack-growth law, enabling the quantification of mechanical–tribological coupling effects. The proposed model exhibited strong agreement with experimental data (R² = 0.75, RMSE = 0.195), confirming the synergistic contribution of stress intensity and viscous dissipation in controlling fatigue damage evolution. Furthermore, the Failure Assessment Diagram (FAD) methodology was extended to account for finite-life and lubrication effects, successfully delineating the transition from crack arrest to propagation across pressure regimes. The developed approach provides a unified, physically consistent basis for assessing lubrication-dependent fatigue performance in additively manufactured steels, offering enhanced predictive capability for RCF design of AM components.</div></div>","PeriodicalId":23238,"journal":{"name":"Tribology International","volume":"219 ","pages":"Article 111789"},"PeriodicalIF":6.1,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146192424","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Comparative tribological behavior of phosphazene derivatives with different fluorine substituents in three base oils 含不同氟取代基的磷腈衍生物在三种基础油中的摩擦学行为比较

IF 6.1 1区工程技术 Q1 ENGINEERING, MECHANICAL

Tribology International

Pub Date : 2026-07-01 Epub Date: 2026-02-03 DOI: 10.1016/j.triboint.2026.111788

Xixiang Wang , Shunzhen Ren , Yuefeng Ma , Zhipeng Li , Tianhui Ren

In this work, three phosphazene derivatives (HCCP-CH₃, HCCP-CF₃ and HCCP-OCF₃) were synthesized and lubrication mechanisms characterized. The tribological behaviors as additives was evaluated in vegetable oil (JVBO), pentaerythritol tetraoleate (PETO-4) and coal-to-liquid (CTL) by using a four-ball friction tester under a wide range of concentrations and loads, which indicates that all three phosphazene derivatives have excellent load-carrying capacity, anti-wear, and friction-reducing properties. The characterizing results for the tribofilm show that the fluorinated phosphonitrile derivatives significantly enhanced the tribological performance, among which HCCP-OCF3 exhibits the most remarkable friction-reducing and anti-wear properties. The thermogravimetric analysis (TGA) results show that HCCP-OCF₃ owns the higher thermal stability for among these three structures. The formation mechanism was an initial iron oxide layer forms under thermal and mechanical stress, followed by a compact Fe–F/Fe–O–P layer serving as an extreme-pressure barrier, and a Fe–N layer developing near the steel surface due to nitrogen diffusion. The results demonstrate that the substitution structure of phosphazene derivatives significantly influences tribofilm formation, friction behavior, and extreme-pressure performance, revealing their feasibility as integrated lubricating and flame-retardant additives for advanced lubrication systems.

本文合成了三种磷腈衍生物（HCCP-CH3、HCCP-CF3和HCCP-OCF3），并对其润滑机理进行了表征。采用四球摩擦试验机，对三种磷腈衍生物在植物油（JVBO）、四油酸季戊四醇（PETO-4）和煤制液（CTL）中的摩擦学性能进行了测试，结果表明，三种磷腈衍生物均具有良好的承载性能、抗磨性能和减摩性能。摩擦膜的表征结果表明，氟化膦腈衍生物显著提高了摩擦膜的摩擦学性能，其中HCCP-OCF3具有最显著的减摩和抗磨性能。热重分析（TGA）结果表明，三种结构中HCCP-OCF3具有较高的热稳定性。其形成机制是在热应力和机械应力作用下形成初始氧化铁层，随后形成致密的Fe-F / Fe-O-P层，作为极压屏障，由于氮的扩散，在钢表面附近形成Fe-N层。结果表明，磷腈衍生物的取代结构显著影响摩擦膜的形成、摩擦行为和极压性能，揭示了它们作为先进润滑系统的综合润滑和阻燃添加剂的可行性。

{"title":"Comparative tribological behavior of phosphazene derivatives with different fluorine substituents in three base oils","authors":"Xixiang Wang , Shunzhen Ren , Yuefeng Ma , Zhipeng Li , Tianhui Ren","doi":"10.1016/j.triboint.2026.111788","DOIUrl":"10.1016/j.triboint.2026.111788","url":null,"abstract":"<div><div>In this work, three phosphazene derivatives (HCCP-CH<sub>3</sub>, HCCP-CF<sub>3</sub> and HCCP-OCF<sub>3</sub>) were synthesized and lubrication mechanisms characterized. The tribological behaviors as additives was evaluated in vegetable oil (JVBO), pentaerythritol tetraoleate (PETO-4) and coal-to-liquid (CTL) by using a four-ball friction tester under a wide range of concentrations and loads, which indicates that all three phosphazene derivatives have excellent load-carrying capacity, anti-wear, and friction-reducing properties. The characterizing results for the tribofilm show that the fluorinated phosphonitrile derivatives significantly enhanced the tribological performance, among which HCCP-OCF3 exhibits the most remarkable friction-reducing and anti-wear properties. The thermogravimetric analysis (TGA) results show that HCCP-OCF<sub>3</sub> owns the higher thermal stability for among these three structures. The formation mechanism was an initial iron oxide layer forms under thermal and mechanical stress, followed by a compact Fe–F/Fe–O–P layer serving as an extreme-pressure barrier, and a Fe–N layer developing near the steel surface due to nitrogen diffusion. The results demonstrate that the substitution structure of phosphazene derivatives significantly influences tribofilm formation, friction behavior, and extreme-pressure performance, revealing their feasibility as integrated lubricating and flame-retardant additives for advanced lubrication systems.</div></div>","PeriodicalId":23238,"journal":{"name":"Tribology International","volume":"219 ","pages":"Article 111788"},"PeriodicalIF":6.1,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146192425","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optimizing surface textures of polycrystalline diamond compact for tribological behavior improvement under vacuum thermal cycling 在真空热循环条件下优化聚晶金刚石压片表面织构以改善摩擦学性能

IF 6.1 1区工程技术 Q1 ENGINEERING, MECHANICAL

Tribology International

Pub Date : 2026-07-01 Epub Date: 2026-02-13 DOI: 10.1016/j.triboint.2026.111843

Xuejiao Sun , Lei Chen , Ruizhi Jia , Baochang Liu

To enhance the wear resistance of polycrystalline diamond compact (PDC) drill bits, thereby further extending their service life under extreme lunar environment, textured PDCs were fabricated. Combined experimental and simulation methods were employed to investigate the optimal texture parameters and wear mechanism of textured PDCs under vacuum thermal cycling conditions. The results demonstrated that textured PDCs exhibited significantly enhanced vacuum tribological properties compared with untextured PDCs. Therefore, surface texturing provided a practical and effective technical approach to improve the tribological performance of drilling tools under extreme lunar conditions.

为了提高PDC钻头的耐磨性，从而进一步延长其在月球极端环境下的使用寿命，制备了织构PDC钻头。采用实验与仿真相结合的方法，研究了真空热循环条件下织构PDCs的最佳织构参数和磨损机理。结果表明，与未织构的PDCs相比，织构的PDCs具有显著提高的真空摩擦学性能。因此，表面织构为提高极端月球条件下钻井工具的摩擦学性能提供了一种实用有效的技术途径。

引用次数: 0

Multi-scale analysis and modeling of material removal process for ultrasonic vibration-assisted polishing 超声振动辅助抛光材料去除过程的多尺度分析与建模

IF 6.1 1区工程技术 Q1 ENGINEERING, MECHANICAL

Tribology International

Pub Date : 2026-07-01 Epub Date: 2026-02-07 DOI: 10.1016/j.triboint.2026.111812

Tianqi Zhang , Tian Shi , Weifeng Yao , Lihui Zhang , Jinzhong Wu , Jianming Zheng , Erlin Zhang , Tianbiao Yu

This study develops a multi‑scale material removal model for ultrasonic vibration‑assisted polishing (UVAP) to bridge macroscopic process parameters with microscopic abrasive cutting behavior through a mesoscopic perspective. By integrating ultrasonic vibration principles and contact mechanics, a macroscopic contact model between polishing pad and workpiece surface is first established. From a meso-scale viewpoint, abrasive particles within contact area are categorized as embedded and free types. Corresponding microscopic material removal models are then formulated based on indentation hardness theory, Hertzian contact theory, the law of energy conservation, and other relevant principles. Building on the mesoscopic analysis, a material removal rate (MRR) model for contact area is constructed, incorporating a radial scraping cutting frequency function for embedded abrasive particles and an impact count function for free abrasive particles in a single ultrasonic vibration period. The predicted results from the model deviate from experimental data by no more than 6 %. Based on the established model, further simulation studies under varying polishing parameters reveal the effect characteristics of ultrasonic vibration on intermediate variables during material removal process in UVAP, elucidate the scientific essence of why ultrasonic vibration enhances polishing performance, and provide a reliable theoretical basis for understanding and optimizing the UVAP process.

本研究开发了超声振动辅助抛光（UVAP）的多尺度材料去除模型，通过介观视角将宏观工艺参数与微观磨料切削行为联系起来。结合超声振动原理和接触力学，首先建立了抛光垫与工件表面的宏观接触模型。从中观角度看，接触区域内的磨粒可分为嵌入型和自由型。然后根据压痕硬度理论、赫兹接触理论、能量守恒定律等相关原理，建立相应的微观材料去除模型。在细观分析的基础上，建立了接触面积的材料去除率（MRR）模型，该模型结合了单个超声振动周期内嵌入磨粒的径向刮切频率函数和自由磨粒的冲击计数函数。模型预测结果与实验数据的偏差不超过6% %。在建立的模型基础上，进一步进行了不同抛光参数下的仿真研究，揭示了超声振动对UVAP材料去除过程中中间变量的影响特征，阐明了超声振动提高抛光性能的科学本质，为理解和优化UVAP工艺提供了可靠的理论依据。

{"title":"Multi-scale analysis and modeling of material removal process for ultrasonic vibration-assisted polishing","authors":"Tianqi Zhang , Tian Shi , Weifeng Yao , Lihui Zhang , Jinzhong Wu , Jianming Zheng , Erlin Zhang , Tianbiao Yu","doi":"10.1016/j.triboint.2026.111812","DOIUrl":"10.1016/j.triboint.2026.111812","url":null,"abstract":"<div><div>This study develops a multi‑scale material removal model for ultrasonic vibration‑assisted polishing (UVAP) to bridge macroscopic process parameters with microscopic abrasive cutting behavior through a mesoscopic perspective. By integrating ultrasonic vibration principles and contact mechanics, a macroscopic contact model between polishing pad and workpiece surface is first established. From a meso-scale viewpoint, abrasive particles within contact area are categorized as embedded and free types. Corresponding microscopic material removal models are then formulated based on indentation hardness theory, Hertzian contact theory, the law of energy conservation, and other relevant principles. Building on the mesoscopic analysis, a material removal rate (MRR) model for contact area is constructed, incorporating a radial scraping cutting frequency function for embedded abrasive particles and an impact count function for free abrasive particles in a single ultrasonic vibration period. The predicted results from the model deviate from experimental data by no more than 6 %. Based on the established model, further simulation studies under varying polishing parameters reveal the effect characteristics of ultrasonic vibration on intermediate variables during material removal process in UVAP, elucidate the scientific essence of why ultrasonic vibration enhances polishing performance, and provide a reliable theoretical basis for understanding and optimizing the UVAP process.</div></div>","PeriodicalId":23238,"journal":{"name":"Tribology International","volume":"219 ","pages":"Article 111812"},"PeriodicalIF":6.1,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146192317","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Influence of temperature and crossing angle on the tribo-corrosion-fatigue behaviors of steel wire ropes of winch drum in offshore drilling rig 温度和交叉角对海洋钻井绞车卷筒钢丝绳摩擦腐蚀疲劳性能的影响

IF 6.1 1区工程技术 Q1 ENGINEERING, MECHANICAL

Tribology International

Pub Date : 2026-07-01 Epub Date: 2026-02-06 DOI: 10.1016/j.triboint.2026.111750

Bo Wang , Dagang Wang , Shirong Ge , Hailang Chong , Weiguang Chen , Dekun Zhang

Steel wire ropes used on winch drums of offshore drilling platforms suffer from the combined effects of friction, corrosion, and fatigue, leading to wear, corrosion, and wire breaks that compromise their load-bearing capacity and operational safety. A self-made test rig was employed to investigate the tribo-corrosion-fatigue degradation behaviors of steel wire ropes under different temperatures and crossing angles. Damage profiles were analyzed using a 3D profilometer, and surface morphology of worn/fractured sections was examined via scanning electron microscopy. Quantitative assessments included volume loss, volume loss rate, and number of broken wires, while corrosion resistance and residual load-bearing strength were evaluated through electrochemical analysis and breaking tensile tests, respectively. The results show that temperature exerts a more pronounced influence on the friction coefficient of steel wire ropes than the crossing angle. The predominant fracture mechanism is identified as corrosion-fatigue fracture. At large crossing angles (≥10°), secondary fractures develop in the surface wires, leading to the loss of fractured wires. Furthermore, an increase in temperature aggravates tribo-corrosion-fatigue damage, with the total damage peaking at a crossing angle of 10°. Notably, the local stress concentration induced by large crossing angles has a substantially greater impact on the residual load-bearing capacity of steel wire ropes than temperature. These findings highlight the critical influence of temperature and crossing angle on the service performance and failure behavior of steel wire ropes in the hoisting system of offshore drilling rig, providing important theoretical guidance for optimizing their design and maintenance under complex working conditions.

海上钻井平台绞车卷筒上使用的钢丝绳受到摩擦、腐蚀和疲劳的综合影响，导致磨损、腐蚀和断丝，从而影响其承载能力和操作安全性。采用自制的试验装置，对钢丝绳在不同温度、不同交叉角下的摩擦腐蚀疲劳退化行为进行了研究。使用3D轮廓仪分析损伤轮廓，并通过扫描电子显微镜检查磨损/断裂部分的表面形貌。定量评估包括体积损失率、体积损失率和断线数量，同时通过电化学分析和断裂拉伸测试分别评估耐腐蚀性和剩余承载强度。结果表明，温度对钢丝绳摩擦系数的影响比交叉角的影响更为显著。主要断裂机制为腐蚀-疲劳断裂。当交叉角较大（≥10°）时，表面钢丝发生二次断裂，导致断裂钢丝丢失。此外，温度升高加剧了摩擦腐蚀疲劳损伤，总损伤在交叉角为10°时达到峰值。值得注意的是，大交叉角引起的局部应力集中对钢丝绳残余承载能力的影响要比温度大得多。这些研究结果凸显了温度和交叉角对海洋钻井平台提升系统钢丝绳的使用性能和失效行为的重要影响，为复杂工况下钢丝绳的优化设计和维护提供了重要的理论指导。

{"title":"Influence of temperature and crossing angle on the tribo-corrosion-fatigue behaviors of steel wire ropes of winch drum in offshore drilling rig","authors":"Bo Wang , Dagang Wang , Shirong Ge , Hailang Chong , Weiguang Chen , Dekun Zhang","doi":"10.1016/j.triboint.2026.111750","DOIUrl":"10.1016/j.triboint.2026.111750","url":null,"abstract":"<div><div>Steel wire ropes used on winch drums of offshore drilling platforms suffer from the combined effects of friction, corrosion, and fatigue, leading to wear, corrosion, and wire breaks that compromise their load-bearing capacity and operational safety. A self-made test rig was employed to investigate the tribo-corrosion-fatigue degradation behaviors of steel wire ropes under different temperatures and crossing angles. Damage profiles were analyzed using a 3D profilometer, and surface morphology of worn/fractured sections was examined via scanning electron microscopy. Quantitative assessments included volume loss, volume loss rate, and number of broken wires, while corrosion resistance and residual load-bearing strength were evaluated through electrochemical analysis and breaking tensile tests, respectively. The results show that temperature exerts a more pronounced influence on the friction coefficient of steel wire ropes than the crossing angle. The predominant fracture mechanism is identified as corrosion-fatigue fracture. At large crossing angles (≥10°), secondary fractures develop in the surface wires, leading to the loss of fractured wires. Furthermore, an increase in temperature aggravates tribo-corrosion-fatigue damage, with the total damage peaking at a crossing angle of 10°. Notably, the local stress concentration induced by large crossing angles has a substantially greater impact on the residual load-bearing capacity of steel wire ropes than temperature. These findings highlight the critical influence of temperature and crossing angle on the service performance and failure behavior of steel wire ropes in the hoisting system of offshore drilling rig, providing important theoretical guidance for optimizing their design and maintenance under complex working conditions.</div></div>","PeriodicalId":23238,"journal":{"name":"Tribology International","volume":"219 ","pages":"Article 111750"},"PeriodicalIF":6.1,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146192345","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Immature polymeric nanoparticles as promising lubricant additives enable robust oil-based lubrication and efficient waste-to-resource conversion 未成熟的聚合物纳米颗粒作为有前途的润滑剂添加剂，可以实现坚固的油基润滑和有效的废物到资源的转化

IF 6.1 1区工程技术 Q1 ENGINEERING, MECHANICAL

Tribology International

Pub Date : 2026-07-01 Epub Date: 2026-02-04 DOI: 10.1016/j.triboint.2026.111791

Zihao Mou , Jinyu Yao , Lu Wang , Yangdong He , Bin Zhao , Zhijun Wang , Ying Li , Weiwei Tang , Zhiqiang Jiang , Baogang Wang

Separation and application of immature nanoparticles from the synthesis system of polymeric nanoparticles (PNPs) is a cost-effective route to improve the utilization rate of monomers. Here, for the first time, mature and immature polydopamine nanoparticles (mPNPs and imPNPs) with a total yield of up to 75.7 % were separated from the ammonia-driven synthesis system via centrifugation and dialysis, and further transformed into the polyelectrolyte-modified PNPs (mPPNPs and imPPNPs) in a simple strategy. These PPNPs exhibited respectable colloidal stability and tribological properties as lubricant additives of PEG200. Tribological evaluations reflected that the optimal doses of mPPNPs and imPPNPs are 1.0 wt% and 0.5 wt%, respectively. At these doses, the friction and wear reductions by imPPNPs (38.2 % and 63.7 %) were higher than those of mPPNPs (37.6 % and 61.6 %), which is attributed to the smaller size and higher charge density of imPPNPs than mPPNPs. Moreover, the tribological stability of imPPNPs is better than that of mPPNPs under heavy-load, high-speed, long-duration, and start-stop tests. Potential-controlled friction experiments and wear analyses confirmed that the good adsorption ability of the polyelectrolyte shell, the strong adhesion and chelation effects of polydopamine structures, and the deposition of hybrid tribofilm should be responsible for the robust tribological behaviors of imPPNPs. This study highlights the prospect of imPNPs in tribology, enabling waste-to-resource conversion and providing new insights into green lubrication.

从聚合纳米颗粒合成体系中分离和应用未成熟纳米颗粒是提高单体利用率的一种经济有效的途径。通过离心和透析，首次从氨驱动合成体系中分离出总收率高达75.7% %的成熟和不成熟的聚多巴胺纳米粒子（mPNPs和imPNPs），并以简单的策略进一步转化为聚电解质修饰的PNPs （mPPNPs和imPPNPs）。这些PPNPs作为PEG200的润滑剂添加剂具有良好的胶体稳定性和摩擦学性能。摩擦学评估表明，mPPNPs和imPPNPs的最佳剂量分别为1.0 wt%和0.5 wt%。在这些剂量下，imPPNPs的摩擦磨损减量（38.2 %和63.7 %）高于mPPNPs(37.6 %和61.6 %)，这是由于imPPNPs比mPPNPs尺寸更小，电荷密度更高。此外，在重载、高速、长时间和启停试验中，imPPNPs的摩擦学稳定性优于mPPNPs。势控摩擦实验和磨损分析证实，聚电解质壳的良好吸附能力、聚多巴胺结构的强粘附和螯合作用以及杂化摩擦膜的沉积是imPPNPs具有良好摩擦学性能的原因。这项研究强调了imPNPs在摩擦学中的前景，实现了废物到资源的转化，并为绿色润滑提供了新的见解。

{"title":"Immature polymeric nanoparticles as promising lubricant additives enable robust oil-based lubrication and efficient waste-to-resource conversion","authors":"Zihao Mou , Jinyu Yao , Lu Wang , Yangdong He , Bin Zhao , Zhijun Wang , Ying Li , Weiwei Tang , Zhiqiang Jiang , Baogang Wang","doi":"10.1016/j.triboint.2026.111791","DOIUrl":"10.1016/j.triboint.2026.111791","url":null,"abstract":"<div><div>Separation and application of immature nanoparticles from the synthesis system of polymeric nanoparticles (PNPs) is a cost-effective route to improve the utilization rate of monomers. Here, for the first time, mature and immature polydopamine nanoparticles (mPNPs and imPNPs) with a total yield of up to 75.7 % were separated from the ammonia-driven synthesis system via centrifugation and dialysis, and further transformed into the polyelectrolyte-modified PNPs (mPPNPs and imPPNPs) in a simple strategy. These PPNPs exhibited respectable colloidal stability and tribological properties as lubricant additives of PEG200. Tribological evaluations reflected that the optimal doses of mPPNPs and imPPNPs are 1.0 wt% and 0.5 wt%, respectively. At these doses, the friction and wear reductions by imPPNPs (38.2 % and 63.7 %) were higher than those of mPPNPs (37.6 % and 61.6 %), which is attributed to the smaller size and higher charge density of imPPNPs than mPPNPs. Moreover, the tribological stability of imPPNPs is better than that of mPPNPs under heavy-load, high-speed, long-duration, and start-stop tests. Potential-controlled friction experiments and wear analyses confirmed that the good adsorption ability of the polyelectrolyte shell, the strong adhesion and chelation effects of polydopamine structures, and the deposition of hybrid tribofilm should be responsible for the robust tribological behaviors of imPPNPs. This study highlights the prospect of imPNPs in tribology, enabling waste-to-resource conversion and providing new insights into green lubrication.</div></div>","PeriodicalId":23238,"journal":{"name":"Tribology International","volume":"219 ","pages":"Article 111791"},"PeriodicalIF":6.1,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146192418","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Influence of ammonia on lubricant degradation and tribological behavior of cylinder liner piston ring system 氨对润滑油降解及缸套活塞环系统摩擦学性能的影响

IF 6.1 1区工程技术 Q1 ENGINEERING, MECHANICAL

Tribology International

Pub Date : 2026-07-01 Epub Date: 2026-02-04 DOI: 10.1016/j.triboint.2026.111796

Zetong Wang , Yuxuan Sheng , Yuanqi Mai , Xuan Ma , Xing Xu , Bo Li , Chuixiao Li

Ammonia fuel, characterized by its hydrogen-rich and carbon-free properties, has garnered significant attention in the field of engines. However, the incylinder environment generated by the fuel and its combustion products may alter the tribological behavior of the engine, thereby impacting the reliability and durability of critical components such as the cylinder liner-piston ring (CLPR) friction pair. This study establishes an experimental protocol to simulate the degradation of lubricating oil induced by ammonia fuel in engines and to assess the tribological performance of the aged oil. Based on the analysis of lubricating oil properties influenced by ammonia and tribological testing results, the degradation mechanism of lubricating oil and the surface damage mechanism of the cylinder liner caused by ammonia were evaluated. Studies have demonstrated that the presence of ammonia impairs the performance of lubricating oils, including increasing kinematic viscosity and altering the total base number (TBN). Additionally, research highlights that ammonia escape characteristics should be considered a critical factor in investigating the tribological behavior of CLPR in ammonia engines. This study offers an exploratory reference for the design of experimental protocols related to the tribological behavior of CLPR in ammonia engines.

氨燃料以其富氢、无碳的特性在发动机领域引起了广泛的关注。然而，燃料及其燃烧产物所产生的气缸环境可能会改变发动机的摩擦学行为，从而影响缸套-活塞环（CLPR）摩擦副等关键部件的可靠性和耐用性。本研究建立了一种模拟氨燃料在发动机中引起润滑油退化的实验方案，并对老化油的摩擦学性能进行了评估。在分析氨对润滑油性能影响的基础上，结合摩擦学试验结果，对润滑油的降解机理和氨对缸套表面的损伤机理进行了评价。研究表明，氨的存在会损害润滑油的性能，包括增加运动粘度和改变总碱值（TBN）。此外，研究强调，氨逸特性应被认为是研究氨发动机CLPR摩擦学行为的关键因素。该研究为氨发动机CLPR摩擦学性能相关实验方案的设计提供了探索性参考。

{"title":"Influence of ammonia on lubricant degradation and tribological behavior of cylinder liner piston ring system","authors":"Zetong Wang , Yuxuan Sheng , Yuanqi Mai , Xuan Ma , Xing Xu , Bo Li , Chuixiao Li","doi":"10.1016/j.triboint.2026.111796","DOIUrl":"10.1016/j.triboint.2026.111796","url":null,"abstract":"<div><div>Ammonia fuel, characterized by its hydrogen-rich and carbon-free properties, has garnered significant attention in the field of engines. However, the incylinder environment generated by the fuel and its combustion products may alter the tribological behavior of the engine, thereby impacting the reliability and durability of critical components such as the cylinder liner-piston ring (CLPR) friction pair. This study establishes an experimental protocol to simulate the degradation of lubricating oil induced by ammonia fuel in engines and to assess the tribological performance of the aged oil. Based on the analysis of lubricating oil properties influenced by ammonia and tribological testing results, the degradation mechanism of lubricating oil and the surface damage mechanism of the cylinder liner caused by ammonia were evaluated. Studies have demonstrated that the presence of ammonia impairs the performance of lubricating oils, including increasing kinematic viscosity and altering the total base number (TBN). Additionally, research highlights that ammonia escape characteristics should be considered a critical factor in investigating the tribological behavior of CLPR in ammonia engines. This study offers an exploratory reference for the design of experimental protocols related to the tribological behavior of CLPR in ammonia engines.</div></div>","PeriodicalId":23238,"journal":{"name":"Tribology International","volume":"219 ","pages":"Article 111796"},"PeriodicalIF":6.1,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146192419","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Influence of inflammatory environment on the fretting corrosion of CoCrMo–Ti6Al4V alloy pairs at the hip head–neck interface 炎症环境对CoCrMo-Ti6Al4V合金对髋头颈界面微动腐蚀的影响

IF 6.1 1区工程技术 Q1 ENGINEERING, MECHANICAL

Tribology International

Pub Date : 2026-07-01 Epub Date: 2026-02-04 DOI: 10.1016/j.triboint.2026.111793

Jian Pu , Xing Peng , Ruijuan Liu , Shu Yang , Yali Zhang , Xiaogang Zhang , Chao Zhang , Jian Song , Zhongmin Jin

Implantation of artificial hip joints frequently induces local inflammatory responses, resulting in the accumulation of reactive oxygen species (ROS) such as H₂O₂ in peri-prosthetic fluid. These species critically affect fretting corrosion at the femoral head–neck interface. In this study, the fretting corrosion behavior of a CoCrMo–Ti6Al4V alloy pair was examined under simulated inflammatory conditions by introducing H₂O₂. A running condition fretting map (RCFM) was established, identifying three fretting regimes: partial slip (PSR), mixed fretting (MFR), and gross slip (GSR). Compared with normal physiological conditions, the presence of H₂O₂ markedly accelerated corrosion and aggravated material degradation across all regimes. The damage mechanisms of the Ti6Al4V–CoCrMo pair vary significantly across different regimes: abrasive wear and tribocorrosion dominate in PSR; adhesive wear and intensified tribocorrosion occur in MFR; and in GSR, severe abrasive wear, tribocorrosion were observed. Increasing H₂O₂ concentration enhanced thermodynamic stability but intensified corrosion kinetics. Concurrently, the dominant damage mechanism transitions from abrasive wear to tribocorrosion characterized by spallation. These collectively lead to a marked increase in material loss and metal ion release. Overall, H₂O₂ promotes cathodic depolarization and the formation of mechanically unstable oxide films, thereby strengthening corrosion-wear synergy and exacerbating material damage under inflammatory conditions.

人工髋关节植入术经常引起局部炎症反应，导致假体周围液体中活性氧（ROS）如h2o2的积累。这些物质严重影响股骨头颈界面的微动腐蚀。在本研究中，通过引入H₂O₂，研究了CoCrMo-Ti6Al4V合金对在模拟炎症条件下的微动腐蚀行为。建立了运行工况微动图（RCFM），确定了三种微动模式：部分滑移（PSR）、混合微动（MFR）和总滑移（GSR）。与正常生理条件相比，在所有条件下，h2o2的存在显著加速了腐蚀，加剧了材料的降解。Ti6Al4V-CoCrMo对的损伤机制在不同状态下存在显著差异：磨料磨损和摩擦腐蚀在PSR中占主导地位；粘结磨损和摩擦腐蚀加剧；在GSR中，观察到严重的磨粒磨损和摩擦腐蚀。H₂O₂浓度的增加提高了热力学稳定性，但加剧了腐蚀动力学。同时，主要的损伤机制由磨粒磨损转变为以剥落为特征的摩擦腐蚀。这些共同导致材料损失和金属离子释放的显著增加。总的来说，h2o2促进阴极去极化和形成机械不稳定的氧化膜，从而加强腐蚀磨损协同作用，加剧炎症条件下的材料损伤。

{"title":"Influence of inflammatory environment on the fretting corrosion of CoCrMo–Ti6Al4V alloy pairs at the hip head–neck interface","authors":"Jian Pu , Xing Peng , Ruijuan Liu , Shu Yang , Yali Zhang , Xiaogang Zhang , Chao Zhang , Jian Song , Zhongmin Jin","doi":"10.1016/j.triboint.2026.111793","DOIUrl":"10.1016/j.triboint.2026.111793","url":null,"abstract":"<div><div>Implantation of artificial hip joints frequently induces local inflammatory responses, resulting in the accumulation of reactive oxygen species (ROS) such as H₂O₂ in peri-prosthetic fluid. These species critically affect fretting corrosion at the femoral head–neck interface. In this study, the fretting corrosion behavior of a CoCrMo–Ti6Al4V alloy pair was examined under simulated inflammatory conditions by introducing H₂O₂. A running condition fretting map (RCFM) was established, identifying three fretting regimes: partial slip (PSR), mixed fretting (MFR), and gross slip (GSR). Compared with normal physiological conditions, the presence of H₂O₂ markedly accelerated corrosion and aggravated material degradation across all regimes. The damage mechanisms of the Ti6Al4V–CoCrMo pair vary significantly across different regimes: abrasive wear and tribocorrosion dominate in PSR; adhesive wear and intensified tribocorrosion occur in MFR; and in GSR, severe abrasive wear, tribocorrosion were observed. Increasing H₂O₂ concentration enhanced thermodynamic stability but intensified corrosion kinetics. Concurrently, the dominant damage mechanism transitions from abrasive wear to tribocorrosion characterized by spallation. These collectively lead to a marked increase in material loss and metal ion release. Overall, H₂O₂ promotes cathodic depolarization and the formation of mechanically unstable oxide films, thereby strengthening corrosion-wear synergy and exacerbating material damage under inflammatory conditions.</div></div>","PeriodicalId":23238,"journal":{"name":"Tribology International","volume":"219 ","pages":"Article 111793"},"PeriodicalIF":6.1,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146192426","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0