Surface & Coatings Technology最新文献_第8页

Influence of transient plasma behavior on the microstructure and properties of CrN coatings under pulsed bias conditions: Insights from multi-scale simulation and experiment 脉冲偏压条件下瞬态等离子体行为对CrN涂层微观结构和性能的影响：来自多尺度模拟和实验的见解

IF 6.1 2区材料科学 Q1 MATERIALS SCIENCE, COATINGS & FILMS

Surface & Coatings Technology

Pub Date : 2026-01-13 DOI: 10.1016/j.surfcoat.2026.133195

Zhenghao Ren , Liwei Zheng , Ganggang Wang , Haojie Chen , Haixin Li , Yonghong Cao , Zhenlin Yang , Shusheng Xu

Optimizing the properties of CrN coatings is critical for their performance in demanding industrial applications. However, achieving this optimization remains challenging due to the complex plasma characteristic and plasma-surface interactions under pulsed plasma conditions. This study investigates the effect of substrate bias pulse duty cycle at a fixed frequency of 50 kHz on the microstructure and tribological performance of CrN coatings deposited via magnetron sputtering, integrating experiments and multi-scale simulations. Experimentally, decreasing the duty cycle from 100% (DC bias) to 25% increased the bias current from 0.1 A to 0.7 A, yet coatings grown at higher duty cycles displayed enhanced (200) texture, finer columnar grains, and smoother surfaces, resulting in superior mechanical and tribological properties. The simulation results reveal that at low duty cycles, numerous electrons are attracted to the substrate during extended pulse-off stage, generating electron current compensation and thus a higher total bias current. However, the shortened pulse-on stage and insufficient energy of ions acquired from plasma sheath at low duty cycles lead to reduced ion-to-atom energy (E_ion). Molecular dynamics simulations further support a shift from layer-by-layer to island-like growth with decreasing duty cycles, leading to rougher surfaces and deteriorated properties. This work establishes a direct connection between transient plasma energetics and atomic-scale growth under pulsed conditions, offering a physically grounded understanding of energy transfer across multiple scales. The insights gained provide a theoretical basis for optimizing pulsed plasma-assisted deposition of advanced coatings with tailored structural and functional properties.

优化CrN涂层的性能对其在苛刻的工业应用中的性能至关重要。然而，由于脉冲等离子体条件下复杂的等离子体特性和等离子体表面相互作用，实现这种优化仍然具有挑战性。结合实验和多尺度模拟，研究了固定频率为50 kHz的衬底偏置脉冲占空比对磁控溅射制备CrN涂层的微观结构和摩擦学性能的影响。在实验中，将占空比从100%（直流偏置）降低到25%，使偏置电流从0.1 A增加到0.7 A，但在更高占空比下生长的涂层显示出增强的（200）纹理，更细的柱状颗粒和更光滑的表面，从而获得更好的机械和摩擦学性能。仿真结果表明，在低占空比下，在延长的脉冲关闭阶段，大量电子被吸引到衬底上，产生电子电流补偿，从而产生更高的总偏置电流。然而，脉冲开启阶段的缩短和低占空比下从等离子体鞘获得的离子能量不足导致离子到原子能量（Eion）的降低。分子动力学模拟进一步支持了从一层接一层到岛状生长的转变，随着占空比的减少，导致表面更粗糙，性能更差。这项工作建立了脉冲条件下瞬态等离子体能量学和原子尺度生长之间的直接联系，为跨多个尺度的能量转移提供了物理基础理解。所获得的见解为优化脉冲等离子体辅助沉积具有定制结构和功能特性的先进涂层提供了理论基础。

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引用次数: 0

Research on the interface bonding mechanism and lifespan model of BIPV bonded structures BIPV键合结构界面键合机理及寿命模型研究

IF 6.1 2区材料科学 Q1 MATERIALS SCIENCE, COATINGS & FILMS

Surface & Coatings Technology

Pub Date : 2026-01-12 DOI: 10.1016/j.surfcoat.2026.133164

Yonghua Zhu , Fugui Ha , Runze Zhang , Yunchuan Xie , Zhen Liu

Thermoplastic polyolefin (TPO) is widely used in automotive, waterproofing, and electrical applications due to its excellent mechanical properties, weather resistance, and chemical corrosion resistance. With the advancing refinement of solar technology, building-integrated photovoltaics (BIPV) urgently require enhanced bonding strength and durability at the adhesive interface between the TPO base layer and silicone adhesive. This study proposes a modification strategy using plasma treatment to alter the surface chemistry of TPO and improve its interaction with silicone adhesive, thereby constructing a robust and durable bonded interface. Furthermore, a computational model for predicting the service life of adhesive joints under complex external field coupling was established. The results demonstrate that the bonding strength at the interface increased from 0.23 MPa for untreated TPO to 1.25 MPa for plasma-modified TPO, while the lap shear strength improved from 0.42 MPa to 1.84 MPa. Numerical simulations and aging tests were employed to develop a generalized Eyring model for predicting the service life of the adhesive structure under combined stress-humidity-thermal conditions. The model achieved an accuracy of 98%, and the predicted service life of the joint under 45 °C and 30% RH was 18.17 years, meeting practical application requirements. This research provides theoretical support for the design of bonding strength and durability in BIPV interfaces, the formulation of engineering maintenance strategies, and the optimization of lifetime prediction standards, thereby contributing to the long-term safe operation of BIPV under the dual‑carbon goals.

热塑性聚烯烃（TPO）因其优异的机械性能、耐候性和耐化学腐蚀性而广泛应用于汽车、防水和电气应用。随着太阳能技术的不断完善，建筑集成光伏（BIPV）迫切需要提高TPO基材与有机硅胶粘剂粘合界面的粘合强度和耐久性。本研究提出了一种利用等离子体处理改变TPO表面化学性质并改善其与有机硅粘合剂相互作用的改性策略，从而构建坚固耐用的粘合界面。在此基础上，建立了复杂外场耦合作用下粘接寿命预测的计算模型。结果表明：等离子体改性TPO的界面结合强度从0.23 MPa提高到1.25 MPa，搭接剪切强度从0.42 MPa提高到1.84 MPa；通过数值模拟和老化试验，建立了粘接结构在应力-湿-热复合条件下使用寿命的广义Eyring模型。该模型的预测精度达到98%，在45°C、30% RH条件下，预测接头的使用寿命为18.17年，满足实际应用要求。本研究为BIPV界面的粘结强度和耐久性设计、工程维护策略的制定、寿命预测标准的优化提供理论支持，有助于BIPV在双碳目标下的长期安全运行。

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引用次数: 0

TiAlN-based coating architectures for enhanced solid particle erosion resistance 增强固体颗粒耐蚀性的钛基涂层体系结构

IF 6.1 2区材料科学 Q1 MATERIALS SCIENCE, COATINGS & FILMS

Surface & Coatings Technology

Pub Date : 2026-01-11 DOI: 10.1016/j.surfcoat.2026.133176

B. Millan-Ramos , P.R.T. Avila , S. Brown , L.B. Varela , M. Cavarroc-Weimer , J.M. Mendez , M. Patterson , L. Martinu , J.E. Klemberg-Sapieha

Solid particle erosion (SPE) can severely damage the airfoils of aircraft engines, reducing thrust and increasing fuel consumption. Ti-based nitride coatings are a suitable solution to protect against SPE. However, an optimal coating architecture should control intrinsic stress development during coating deposition. In the present work, two coating systems were deposited on Ti-6Al-4V alloy by low duty cycle magnetron sputtering (LDMS): i) monolithic TiAlN coatings with different bias values applied across their thickness, and ii) multilayer coatings composed of alternating metallic TiAl and ceramic TiAlN layers. The coating thickness varies from 9.5 μm to 11.4 μm depending on the architecture. All the samples exhibit a cubic-TiN crystallographic structure and the stress-depth profiles indicate that the development of compressive stresses strongly depends on the coating architecture. High hardness (25–30 GPa) was observed for coatings with moderately stressed surfaces (2.1–3.8 GPa in compression), and improved scratch resistance (L_C2 > 26 N) was obtained for coatings with moderate-to-low stress profiles. In addition, the coating's erosion resistance is increased by up to two orders of magnitude (1.3 × 10⁵ μm/g) compared to the bare substrate (3.7 × 10⁷ μm/g) while using Al₂O₃ particles at a speed of 75 m/s. The examination of the eroded surface reveals a combination of brittle and ductile mechanisms involved in the SPE process. The differences in the erosion rate of the coatings are correlated to the index of brittleness and the residual stress depth profile.

固体颗粒侵蚀（SPE）会严重破坏飞机发动机的翼型，降低推力，增加燃油消耗。钛基氮化物涂层是防止固相萃取的合适解决方案。然而，最佳的涂层结构应该控制涂层沉积过程中的内在应力发展。本文采用低占空比磁控溅射（LDMS）技术在Ti-6Al-4V合金上沉积了两种涂层体系：i)在不同厚度上施加不同偏置值的单片TiAlN涂层，ii)由金属TiAl层和陶瓷TiAlN层交替组成的多层涂层。根据结构的不同，涂层厚度从9.5 μm到11.4 μm不等。所有样品均呈现立方tin晶体结构，应力-深度分布表明压应力的发展与涂层结构密切相关。中等应力表面（2.1-3.8 GPa）涂层具有较高的硬度（25-30 GPa），中等至低应力表面涂层具有较好的抗划伤性能（LC2 > 26 N）。此外，当Al2O3颗粒以75 m/s的速度沉积时，涂层的耐蚀性比裸基板（3.7 × 107 μm/g）提高了两个数量级（1.3 × 105 μm/g）。对侵蚀表面的检查揭示了SPE过程中涉及的脆性和延性机制的组合。腐蚀速率的差异与涂层的脆性指数和残余应力深度分布有关。

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引用次数: 0

Effect of B4C-induced in-situ ceramic reinforcing phases on the mechanical properties of FeCoCrNiMnTi₀.₅Al₀.₅ high-entropy alloy coatings b4c诱导原位陶瓷增强相对feccrnimnti 0 .₅Al 0力学性能的影响。₅高熵合金涂层

IF 6.1 2区材料科学 Q1 MATERIALS SCIENCE, COATINGS & FILMS

Surface & Coatings Technology

Pub Date : 2026-01-11 DOI: 10.1016/j.surfcoat.2026.133189

Fengyuan Guo , Chuanwei Shi , Lingchen Kong , Shenhao Wang , Zhiheng Zhu , Junjie Zhao , Mengjie Liao

In this study, FeCoCrNiMnTi₀.₅Al₀.₅/B₄C coatings with different B₄C contents (0, 1, 3, 5, 7, and 9 wt%) were fabricated on AISI 1045 steel by laser cladding to investigate the effect of B₄C on the evolution of microstructure and wear resistance. With increasing B₄C content, in-situ reactions during solidification produced TiC, Ti(C,B), and CrB ceramic phases, transforming the coating from a dual-phase (BCC/FCC) to a multiphase structure. The microstructure evolved from columnar to equiaxed and eventually to acicular grains. For the S4 coating, EBSD analyses revealed reduced texture strength and moderate dislocation density, contributing to enhanced strength. Grain refinement and dispersion of in-situ ceramics jointly improved the microhardness and wear resistance. The S4 coating exhibited optimal performance, with a wear rate of only 2.2% that of the AISI 1045 steel substrate. However, excessive B₄C caused CrB coarsening and brittle fracture, leading to accelerated three-body abrasive wear. At 600 °C, the uniformly distributed TiC, Ti(C,B), and CrB-rich phases exhibited excellent thermal stability, enhancing hardness and resistance to plastic deformation. Furthermore, these ceramic phases promoted the formation of a dense and continuous oxide film with self-lubricating and self-healing characteristics, markedly reducing the friction coefficient and wear rate. This study elucidates the dual strengthening and protection mechanisms provided by the in-situ ceramic phases and demonstrates that an optimized B₄C content enables superior tribological performance of the coatings under both room-temperature and 600 °C wear conditions.

在本研究中，feccrnimnti 0 .₅Al 0。通过激光熔覆在AISI 1045钢上制备了不同B₄C含量（0、1、3、5、7和9 wt%）的₅/B₄C涂层，以研究B₄C对组织演变和耐磨性的影响。随着B₄C含量的增加，凝固过程中的原位反应生成TiC、Ti（C，B）和CrB陶瓷相，使涂层由双相（BCC/FCC）转变为多相结构。显微组织由柱状组织演变为等轴组织，最终演变为针状组织。对于S4涂层，EBSD分析显示织构强度降低，位错密度适中，有助于增强强度。原位陶瓷的晶粒细化和分散性共同提高了显微硬度和耐磨性。S4涂层表现出最佳性能，磨损率仅为AISI 1045钢基体的2.2%。过量的B₄C导致CrB粗化脆性断裂，加速三体磨粒磨损。在600℃时，均匀分布的TiC、Ti（C，B）和crb富相表现出优异的热稳定性，提高了硬度和抗塑性变形能力。此外，这些陶瓷相促进了具有自润滑和自修复特性的致密连续氧化膜的形成，显著降低了摩擦系数和磨损率。本研究阐明了原位陶瓷相提供的双重强化和保护机制，并表明优化的B₄C含量使涂层在室温和600°C磨损条件下都具有优异的摩擦学性能。

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引用次数: 0

Influence of thermal barrier coating on the stress rupture life of thin-walled Ni-based single crystal superalloy 热障涂层对薄壁ni基单晶高温合金应力断裂寿命的影响

IF 6.1 2区材料科学 Q1 MATERIALS SCIENCE, COATINGS & FILMS

Surface & Coatings Technology

Pub Date : 2026-01-10 DOI: 10.1016/j.surfcoat.2026.133169

Jing Liu , Li Wang , Minghan Yu , Liping Xu , Shiling Min , Di Wang , Xiangwei Jiang , Jiasheng Dong , Langhong Lou

Thermal barrier coatings (TBCs) are widely used on advanced thin-walled Ni-based single crystal (SX) blades. In this study, the influence of TBC on the stress rupture life of thin-walled Ni-based SX superalloy was investigated at 1100 °C/120 MPa. For 0.5 mm wall thickness (T_0.5) specimens, the average stress rupture life of bare specimens (48 h) was 43.8% shorter than that of the coated specimens (68 h). No significant difference was found between the T_1.0 bare specimens (111 h) and coated specimens (118 h). In contrast, for the T_1.5 specimens, the bare specimens (186 h) exhibited a 45.2% longer life than the coated specimens (102 h). In T_0.5 specimens, TBC delays the plastic deformation of the substrate and increases the initial load-bearing area. These effects collectively slow oxidation and delay both the degradation of the γ/γ' phase and the initiation and propagation of cracks, ultimately leading to a longer stress rupture life of the coated specimens. In T_1.0 specimens, TBC delays the plastic deformation of the substrate and increases the initial load-bearing area, while the severe TBC oxidation and inhomogeneous macroscopic plastic deformation accelerated by the TBC spallation promote degradation of the γ/γ' phase as well as the initiation and propagation of cracks. As a result, the stress rupture lives of the T_1.0 bare and coated specimens become comparable. Conversely, in T_1.5 specimens, the TBC has a limited effect on delaying deformation and increasing the initial effective load-bearing area. However, TBC degradation and spallation accelerated inhomogeneous macroscopic plastic deformation of substrate. These synergistic effects drastically reduce the stress rupture life of the coated specimens. Furthermore, the TBC damage mechanism is strongly thickness-dependent. These findings provide valuable insights for structural optimization and damage analysis of advanced turbine blades.

热障涂层广泛应用于高级薄壁镍基单晶（SX）叶片。在1100℃/120 MPa下，研究了TBC对ni基SX薄壁高温合金应力断裂寿命的影响。对于壁厚为0.5 mm （T0.5）的试样，裸露试样的平均应力断裂寿命（48 h）比涂层试样的平均应力断裂寿命（68 h）短43.8%。T1.0裸体（111 h）与包覆体（118 h）无显著差异。相比之下，对于T1.5的样品，裸露的样品（186 h）比涂覆的样品（102 h）寿命长45.2%。在T0.5试样中，TBC延缓了基体的塑性变形，增大了初始承载面积。这些效应共同减缓了氧化，延缓了γ/γ′相的降解以及裂纹的产生和扩展，最终导致涂层试样具有更长的应力断裂寿命。在T1.0试样中，TBC延缓了基体的塑性变形，增加了基体的初始承载面积，而TBC严重的氧化和TBC剥落加速的不均匀宏观塑性变形促进了γ/γ′相的降解，促进了裂纹的萌生和扩展。结果表明，T1.0裸露和涂层试样的应力断裂寿命具有可比性。相反，在T1.5试件中，TBC对延迟变形和增加初始有效承载面积的作用有限。而TBC的降解和剥落加速了基体的非均匀宏观塑性变形。这些协同效应大大降低了涂层试样的应力断裂寿命。此外，TBC损伤机制与厚度密切相关。这些发现为先进涡轮叶片的结构优化和损伤分析提供了有价值的见解。

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引用次数: 0

Preparation of MAB phases on carbon fibers as novel damage-tolerant interphases for advanced ceramic matrix composites 在碳纤维上制备MAB相作为先进陶瓷基复合材料新型耐损伤界面相

IF 6.1 2区材料科学 Q1 MATERIALS SCIENCE, COATINGS & FILMS

Surface & Coatings Technology

Pub Date : 2026-01-10 DOI: 10.1016/j.surfcoat.2026.133186

Feilong Huang , Xiaoyi Jiang , Cheng Fang , Mingliang Li , Jinpeng Zhu , Gang Shao , Hongxia Lu , Hailong Wang

The development of novel interphase materials that can simultaneously enhance energy dissipation and provide oxidation resistance remains a significant challenge for carbon fiber-reinforced ceramic composites operating in high-temperature environments. In this study, first-principles calculations and verification experiments identify MoAlB as a promising interface material with superior damage tolerance and structural stability. MoAlB coatings were successfully prepared on carbon fibers for the first time via magnetron sputtering combining thermal treatment process. MoAlB coatings can retain structural integrity after high-temperature oxidation and rapidly form a protective α-Al₂O₃ scale through Al outward diffusion, confirming the excellent oxygen isolation capability. This primary work can be used as a reference to the design of interphase material for advanced composites under extreme conditions.

开发能够同时增强能量耗散和抗氧化性能的新型界面材料仍然是高温环境下碳纤维增强陶瓷复合材料面临的重大挑战。在本研究中，第一性原理计算和验证实验表明，MoAlB具有优异的损伤容限和结构稳定性，是一种很有前途的界面材料。采用磁控溅射结合热处理工艺，首次在碳纤维表面成功制备了MoAlB涂层。MoAlB涂层在高温氧化后能保持结构的完整性，并通过Al向外扩散迅速形成保护α-Al2O3的水垢，证实了其优异的隔氧能力。这一初步工作可为极端条件下高级复合材料界面材料的设计提供参考。

引用次数: 0

Study on the phase structure and comprehensive properties of ReNx coatings prepared by magnetron sputtering 磁控溅射制备ReNx涂层的相结构和综合性能研究

IF 6.1 2区材料科学 Q1 MATERIALS SCIENCE, COATINGS & FILMS

Surface & Coatings Technology

Pub Date : 2026-01-10 DOI: 10.1016/j.surfcoat.2026.133187

Yuan Liu , Feng Xu , Wang Ma , Qiu-zhi Xu , Hui-lun Cheng , Xian-qing Shi , Wen-xuan Zhao , Cheng-zuan Gao , Dun-wen Zuo

This study focuses on rhenium nitride (ReNx) coatings (x = 0.37–0.50) deposited on YG8 cemented carbide via magnetron sputtering, investigating nitrogen content's regulation of their microstructural evolution and comprehensive properties. By adjusting the N₂/Ar flow ratio (S1:1:1 to S4:1:4), coatings with varying nitrogen contents were prepared. Characterizations via X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), transmission electron microscopy (TEM), nanoindentation, tribological/electrochemical tests, and first-principles calculations confirm all coatings exhibit a face-centered cubic (fcc) ReNx phase. High nitrogen (S1, x = 0.50) promotes dense, low-roughness (Sa (surface roughness parameter) =1.43 nm) microstructures via lattice contraction and strong ReN bonding; low nitrogen (S4, x = 0.37) causes metallic Re accumulation, increasing roughness (Sa = 1.75 nm) and deposition rate. Mechanically, hardness peaks at 27.66 GPa for S3 (x = 0.40)—supported by TEM observations of dense columnar grains, dislocation walls, and refined grains (19.7 nm)—while elastic modulus rises from 537.0 GPa (S1) to 589.5 GPa (S4) with decreasing nitrogen. Tribologically, minimum friction coefficient (0.1) and wear rate (9.0 × 10⁻⁸ mm³/(N·m), S2) come from tribo-induced ReO₂/ReO₃ lubricants and dense structure. Electrochemically, S1 shows corrosion current density (1.93 × 10⁻⁶ A/cm²) two orders lower than YG8 (2.23 × 10⁻⁴ A/cm²) due to the dense structure's barrier effect. This work clarifies nitrogen-driven structure-property relationships of ReNx coatings, supporting their optimization for friction-corrosion coupled extreme environments.

本研究以磁控溅射沉积在YG8硬质合金上的氮化铼（ReNx）涂层（x = 0.37 ~ 0.50）为研究对象，研究氮含量对其显微组织演变和综合性能的影响。通过调整N2/Ar流量比（S1:1:1 ~ S4:1:4），制备出不同氮含量的涂层。通过x射线衍射（XRD）、x射线光电子能谱（XPS）、扫描电子显微镜（SEM）、透射电子显微镜（TEM）、纳米压痕、摩擦学/电化学测试和第一性原理计算的表征证实，所有涂层都表现出面心立方（fcc） ReNx相。高氮（S1, x = 0.50）通过晶格收缩和强ReN键形成致密、低粗糙度（Sa（表面粗糙度参数）=1.43 nm）的微观结构；低氮（S4, x = 0.37）导致金属Re积累，粗糙度（Sa = 1.75 nm）增大，沉积速率加快。力学上，S3 （x = 0.40）的硬度峰值为27.66 GPa（透射电镜观察到致密柱状晶粒、位错壁和细化晶粒（19.7 nm）），而弹性模量随着氮的减少从537.0 GPa （S1）上升到589.5 GPa （S4）。摩擦学上，最小摩擦系数（0.1）和磨损率（9.0 × 10−8 mm3/(N·m), S2）来自摩擦诱导的ReO2/ReO3润滑油和致密的结构。电化学上，由于致密结构的势垒效应，S1的腐蚀电流密度为1.93 × 10−6 A/cm2，比YG8的腐蚀电流密度（2.23 × 10−4 A/cm2）低2个数量级。这项工作阐明了氮驱动的ReNx涂层的结构-性能关系，支持其在摩擦腐蚀耦合极端环境下的优化。

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引用次数: 0

Effects of Si content on mechanical properties and corrosion resistance of cosputtered (TiZrHfTaSi)Nx films Si含量对溅射（TiZrHfTaSi）Nx薄膜力学性能和耐蚀性的影响

IF 6.1 2区材料科学 Q1 MATERIALS SCIENCE, COATINGS & FILMS

Surface & Coatings Technology

Pub Date : 2026-01-10 DOI: 10.1016/j.surfcoat.2026.133188

Yung-I Chen , Yan-Zhi Liao , Li-Chun Chang

This study investigates the influences of Si content on the characteristics of (TiZrHfTaSi)N_x films fabricated through reactive magnetron cosputtering. The results indicate that a Si content of 8.4 at.% refines the grain size, ascribing to the columnar structure formation, enhancing the film's hardness and elastic modulus to 30.9 and 293 GPa, respectively, but revealing insufficient wear resistance and moderate corrosion resistance. Incorporating the Si content to 18.4 at.% resulted in enhanced wear and corrosion resistances, but the deterioration of mechanical properties was also observed due to the increased amount of an amorphous SiN_x phase. A combination of high mechanical properties and corrosion resistance was obtained for the (TiZrHfTaSi)N_x film with an appropriate Si content of 11.7 at.% in this investigation.

研究了Si含量对反应磁控溅射制备（TiZrHfTaSi）Nx薄膜特性的影响。结果表明：a的Si含量为8.4 at。%细化了膜的晶粒尺寸，使膜的硬度和弹性模量分别提高到30.9和293 GPa，但耐磨性和耐蚀性不足。含硅量为18.4 at。%提高了耐磨损和耐腐蚀性能，但由于非晶态SiNx相的增加，也观察到机械性能的恶化。当Si含量为11.7 at时，（TiZrHfTaSi）Nx薄膜具有较高的机械性能和耐腐蚀性。%在这次调查中。

引用次数: 0

Moderate-temperature annealing for enhanced mechanical and wear properties of Pt-doped CrN coatings: A comparative study at 400 °C and 800 °C 中温退火增强pt掺杂CrN涂层的机械和磨损性能：400°C和800°C的比较研究

IF 6.1 2区材料科学 Q1 MATERIALS SCIENCE, COATINGS & FILMS

Surface & Coatings Technology

Pub Date : 2026-01-10 DOI: 10.1016/j.surfcoat.2026.133184

J. Li , N.N. Xue , W.L. Zhang , Y.J. Chen , H. Ren , B. Guo , F. Gong , Z.W. Xie

To improve the service life of molds utilized in precision glass molding (PGM) in harsh environments, this work puts forward a moderate-temperature annealing post-treatment strategy to address this challenge of insufficient mechanical and tribological properties of Pt-doped CrN coatings. Annealing at 400 °C effectively promotes moderate grain coarsening and retains Pt in solid solution within the CrN matrix, thereby significantly enhancing the overall coating performance. The optimized coating exhibits excellent mechanical properties (a hardness of 24.08 ± 1.02 GPa, a Young's modulus of 324.9 ± 6.15 GPa, a H/E ratio of 0.0744, a H³/E² ratio of 0.132) and outstanding wear resistance (a coefficient of friction of 0.43 and a wear rate of 4.59 × 10⁻⁷ mm³·N⁻¹·m⁻¹). In contrast, annealing at 800 °C induces outward diffusion of Pt along the grain boundaries and the formation of soft CrPt_x intermetallic precipitates, causing surface roughening, reduced hardness, and a dramatic deterioration in wear performance. This work elucidates the microstructure–property relationship governed by annealing temperature and provides important theoretical and practical guidance for designing high-performance protective coatings for harsh service environments.

为了提高精密玻璃成型（PGM）模具在恶劣环境下的使用寿命，本研究提出了一种中温退火后处理策略，以解决掺杂pt CrN涂层机械和摩擦学性能不足的挑战。400℃退火有效地促进了晶粒的适度粗化，并使Pt在CrN基体中保持固溶体状态，从而显著提高了涂层的整体性能。优化后的涂层具有优异的力学性能（硬度为24.08±1.02 GPa，杨氏模量为324.9±6.15 GPa， H/E比为0.0744，H3/E2比为0.132）和优异的耐磨性（摩擦系数为0.43，磨损率为4.59 × 10−7 mm3·N−1·m−1）。相比之下，800℃退火导致Pt沿晶界向外扩散，形成软的CrPtx金属间相，导致表面粗化，硬度降低，磨损性能急剧恶化。该研究阐明了退火温度对涂层微观结构和性能的影响，为设计适用于恶劣使用环境的高性能防护涂层提供了重要的理论和实践指导。

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引用次数: 0

Influence of Ti interlayer thickness on residual stress, adhesion, toughness and corrosion resistance of CrSiN/Ti coatings applied to AZ31 via magnetron sputtering Ti层间厚度对AZ31磁控溅射CrSiN/Ti涂层残余应力、附着力、韧性和耐腐蚀性的影响

IF 6.1 2区材料科学 Q1 MATERIALS SCIENCE, COATINGS & FILMS

Surface & Coatings Technology

Pub Date : 2026-01-10 DOI: 10.1016/j.surfcoat.2026.133167

Haitao Li , Ming Gong , Shiqiang Wang , Pengfei Sun , Bo Liu

To improve the corrosion resistance of magnesium alloys and expand the application scope of Mg-based materials, CrSiN coatings—composed of amorphous Si₃N₄ matrices embedding nanoscale CrN phases—were deposited by reactive magnetron sputtering. To mitigate coating failure and enhance interfacial adhesion, a Ti interlayer was first applied before CrSiN deposition. The microstructure, residual stress, adhesion, toughness, and corrosion behavior of the coating/AZ31 system were systematically investigated utilizing X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), scratch tests, and electrochemical measurements. Results indicate that the Ti interlayer, co-sputtered by DC and RF magnetron sputtering, significantly improves the adhesion strength, toughness, and resistance to chloride-induced corrosion of the CrSiN coating. The maximum adhesion strength reached 23.5 N—16 N higher than that of the Ti-free CrSiN coating. Residual stress was also reduced from 770 MPa without the Ti interlayer to 349 MPa with it. The best corrosion resistance was achieved with a Ti interlayer thickness of approximately 0.37 μm, corresponding to a co-sputtering time of 7 min, yielding a corrosion current density of 0.027 μA/cm² and a polarization resistance of 1670 kΩ·cm². This study further discusses the corrosion and failure mechanisms of CrSiN coatings with varying Ti interlayer thicknesses. It was found that when the Ti layer exceeds 0.37 μm, a distinct columnar crystal structure develops, which considerably degrades the coating's corrosion resistance.

为了提高镁合金的耐蚀性，扩大镁基材料的应用范围，采用反应磁控溅射法制备了包埋纳米级CrN相的非晶Si3N4基体的CrSiN涂层。为了减轻涂层失效和增强界面附着力，在CrSiN沉积之前首先应用Ti中间层。利用x射线衍射（XRD）、透射电子显微镜（TEM）、扫描电子显微镜（SEM）、划痕测试和电化学测量等手段，系统地研究了涂层/AZ31体系的微观结构、残余应力、附着力、韧性和腐蚀行为。结果表明，采用直流磁控溅射和射频磁控共溅射制备Ti中间层，可显著提高CrSiN涂层的附着强度、韧性和抗氯化物腐蚀性能。最大附着力达到23.5 N - 16 N，高于无ti CrSiN涂层。残余应力由未添加Ti夹层时的770 MPa降至添加Ti夹层时的349 MPa。当Ti层间厚度约为0.37 μm时，共溅射时间为7 min，腐蚀电流密度为0.027 μA/cm2，极化电阻为1670 kΩ·cm2。本研究进一步探讨了不同钛层厚度的CrSiN涂层的腐蚀和失效机理。结果表明，当Ti层厚度超过0.37 μm时，涂层会形成明显的柱状晶体结构，使涂层的耐蚀性大大降低。

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