Surface & Coatings Technology最新文献_第10页

Enhanced etching resistance of Y2O3 films through microstructure control via thermal annealing 通过热处理控制Y2O3薄膜的微观结构，提高了薄膜的耐蚀性

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

Surface & Coatings Technology

Pub Date : 2025-12-09 DOI: 10.1016/j.surfcoat.2025.133040

S. Wang , Q. Fu , H. Zhao , T.W. Liskiewicz , B.D. Beake

Y₂O₃ films with enhanced etching resistance were fabricated on silicon substrates using RF magnetron sputtering followed by vacuum annealing at 300 °C, 600 °C, and 900 °C. The films were systematically evaluated under chemical, mixed, and physical plasma etching environments using CF₄/Ar/O₂ gas mixtures. Annealing at 900 °C transformed the microstructure from quasi-circular grains to densely packed polygonal grains with layered stacking, significantly improving the structural compactness of film. Y₂O₃ films demonstrated superior etching resistance compared to conventional materials including Al₂O₃, SiC, AlN, and quartz. The 900 °C-annealed film under vacuum showed highest resistance under chemical and mixed etching, while the 600 °C-annealed film under vacuum performed best under physical etching due to superior hardness (7.2 ± 2.0 GPa). Nanomechanical testing revealed that physical etching resistance correlates with hardness, while chemical and mixed etching resistance depends on the structural compactness of film. Nano-indentation and nano-scratch testing showed that coatings annealed in air were softer and less scratch-resistant than those annealed in vacuum, with differences being more pronounced in statistically distributed nano-scratch testing. X-ray photoelectron spectroscopy confirmed distinct mechanisms: chemical etching involves protective YF bond formation, mixed etching shows enhanced YF stability, and physical etching induces oxygen vacancies. This study establishes a cost-effective strategy for enhancing etching resistance through microstructural optimization, offering promising implications for semiconductor manufacturing applications.

采用射频磁控溅射技术在硅衬底上制备了抗蚀刻性能增强的Y2O3薄膜，并在300℃、600℃和900℃下进行真空退火。利用CF4/Ar/O2混合气体，在化学、混合和物理等离子体刻蚀环境下对薄膜进行了系统的评价。900℃退火后，薄膜的微观结构由准圆形晶粒转变为密集排列的多边形晶粒，呈层状堆叠，显著提高了薄膜的结构致密性。与Al2O3、SiC、AlN和石英等传统材料相比，Y2O3薄膜具有更好的抗蚀刻性能。900℃真空退火膜在化学和混合刻蚀下的电阻最高，而600℃真空退火膜在物理刻蚀下的硬度最高（7.2±2.0 GPa）。纳米力学测试表明，薄膜的物理耐蚀性与硬度有关，而化学耐蚀性和混合耐蚀性取决于薄膜的结构致密性。纳米压痕和纳米划伤测试表明，空气退火的涂层比真空退火的涂层更柔软，抗划伤性更差，纳米划伤测试的统计分布差异更明显。x射线光电子能谱证实了不同的机制：化学蚀刻涉及保护性YF键的形成，混合蚀刻表明YF稳定性增强，物理蚀刻引起氧空位。本研究建立了一种通过微结构优化来提高抗蚀刻性能的成本效益策略，为半导体制造应用提供了有前途的意义。

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引用次数: 0

Effect of current density on enhanced mechanical, corrosion, and tribocorrosion performance of electrodeposited copper-graphene oxide composite coatings 电流密度对电沉积铜-氧化石墨烯复合镀层机械、腐蚀和摩擦腐蚀性能的影响

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

Surface & Coatings Technology

Pub Date : 2025-12-09 DOI: 10.1016/j.surfcoat.2025.133054

Gülden Atalay , Melisa Köse , Sezer Tan , Hasan Algül , Tuğba Tunç Parlak , Ahmet Alp , Hatem Akbulut , Mehmet Uysal

Cu–GO composite coatings were electrodeposited on ST37 steel substrates at different current densities. This study systematically investigates the influence of electrodeposition current density on the characteristics of Cu-graphene oxide coatings. Specifically, the effects on surface morphology, elemental composition, microstructure, crystallite size, nano-mechanical, tribology, and electrochemical behavior were evaluated. It was observed that the surface roughness of the coatings increased progressively with higher current densities. Interestingly, the graphene oxide content within the coatings initially increases, followed by a decline as the current density continues to increase. XRD and Raman analyses confirmed the incorporation of GO, with changes in preferred orientation and microstrain correlated with the current density. FESEM revealed that the addition of GO promoted grain refinement, while a higher current density induced agglomeration. Nanoindentation revealed enhanced mechanical properties, with maximum hardness (2.53 GPa) and elastic modulus (282 GPa) achieved for CuGO2 (0.5 A/cm²), representing ~73 % and 32 % increases over pure Cu, respectively. Electrochemical tests in 3.5 wt% NaCl solution demonstrated superior corrosion resistance for CuGO2, with the most positive OCP, the lowest corrosion current density (36.5 × 10⁻⁴ A·cm⁻²), and the highest charge transfer resistance (1685.44 Ω·cm²). These improvements were attributed to the homogeneous distribution of GO, capacitive film formation, and strengthening mechanisms, including load transfer and dispersion hardening. The optimal mechanical performance, wear, and corrosion resistance were achieved at a current density of 0.5 A/cm², which appears to be the critical value for maximizing the beneficial effects of graphene incorporation. Overall, electrodeposited Cu–GO coatings offer significantly enhanced mechanical and corrosion performance.

在不同电流密度下，在ST37钢基体上电沉积Cu-GO复合镀层。本研究系统地研究了电沉积电流密度对cu -石墨烯氧化物镀层性能的影响。具体来说，对表面形貌、元素组成、微观结构、晶粒尺寸、纳米力学、摩擦学和电化学行为的影响进行了评估。结果表明，随着电流密度的增大，涂层的表面粗糙度逐渐增大。有趣的是，涂层中的氧化石墨烯含量最初增加，随后随着电流密度的继续增加而下降。XRD和Raman分析证实了氧化石墨烯的掺入，并且优选取向和微应变的变化与电流密度相关。FESEM显示，氧化石墨烯的加入促进了晶粒细化，而较高的电流密度诱导了团聚。CuGO2 （0.5 A/cm2）的最大硬度为2.53 GPa，弹性模量为282 GPa，比纯Cu分别提高了约73%和32%。在3.5 wt% NaCl溶液中进行电化学测试，结果表明CuGO2具有优异的耐蚀性，OCP值最高，腐蚀电流密度最低（36.5 × 10−4 A·cm−2），电荷转移电阻最高（1685.44 Ω·cm2）。这些改进归功于氧化石墨烯的均匀分布、电容膜的形成和强化机制，包括负载转移和分散硬化。当电流密度为0.5 a /cm2时，材料的机械性能、耐磨性和耐腐蚀性均达到最佳，这似乎是石墨烯掺入效果最大化的临界值。总的来说，电沉积Cu-GO涂层具有显著增强的机械性能和腐蚀性能。

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引用次数: 0

Fast electrochemical deposition of corrosion resistant mixed hydroxide films from Zn/Al-nitrate aqueous electrolytes on zinc coated steel 锌/硝酸铝水溶液中耐腐蚀混合氢氧化物膜在镀锌钢上的快速电化学沉积

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

Surface & Coatings Technology

Pub Date : 2025-12-08 DOI: 10.1016/j.surfcoat.2025.133044

Chen-Ni Liu , Lukas Ruhm , Marten Huck , Hans-Georg Steinrück , Philipp Wagener , Marcel Roth , Ingo Klüppel , Guido Grundmeier

Corrosion resistant amorphous mixed zinc/aluminium (oxy)hydroxide films were electrodeposited on zinc coated steel from aqueous solutions containing sodium nitrate, zinc nitrate and aluminium nitrate. The ratio of Zn²⁺ and Al³⁺ in the solution was 5:2. Homogeneous films were cathodically deposited within 10 s. The resulting microstructure of the films was analyzed by means of field-emission scanning electron microscopy (FE-SEM). The film deposition rate was estimated by determination of the cross-sectional film thickness to be about 0.5 nm/s. The deposition mechanism was revealed based on the film composition, which was characterized by means of X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), Raman spectroscopy, and time-dependent Fourier transform infrared reflection-absorption spectroscopy (FT-IRRAS) measurements. The formation of a predominantly amorphous aluminium (oxy)hydroxide enriched film was observed. Electrochemical corrosion analysis by electrochemical impedance spectroscopy (EIS) and linear sweep voltammetry (LSV) showed that the deposited films led to a significant inhibition of both cathodic and anodic corrosion reactions already at deposition time of 10 s corresponding to a film thickness of about 5 nm.

采用硝酸钠、硝酸锌和硝酸铝的水溶液，在镀锌钢表面电沉积了耐腐蚀的非晶混合锌/铝（氧）氢氧化物薄膜。溶液中Zn2+与Al3+的比例为5:2。在10 s内阴极沉积均匀膜。利用场发射扫描电镜（FE-SEM）对膜的微观结构进行了分析。通过测定膜的横截面厚度，估计膜的沉积速率约为0.5 nm/s。利用x射线光电子能谱（XPS）、x射线衍射（XRD）、拉曼光谱（Raman spectroscopy）和傅里叶变换红外反射吸收光谱（FT-IRRAS）对薄膜的沉积机理进行了表征。观察到主要形成无定形的氢氧化铝富膜。电化学阻抗谱（EIS）和线性扫描伏安法（LSV）的电化学腐蚀分析表明，沉积膜在沉积时间为10 s时，对应于膜厚度约为5 nm时，对阴极和阳极腐蚀反应都有明显的抑制作用。

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引用次数: 0

Structure and properties of protective coatings on Hf-Nb-Ta-Zr high entropy alloy fabricated by micro-arc oxidation at different voltages 不同电压微弧氧化制备Hf-Nb-Ta-Zr高熵合金防护涂层的组织与性能

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

Surface & Coatings Technology

Pub Date : 2025-12-08 DOI: 10.1016/j.surfcoat.2025.133046

Lijiao Wang , Hu Chen , Wanhuan Yang , Xin Li , Luqi Chai , Yaru Wang , Chi Xu , Jiancheng Du , Xiaoyue Jin , Wenbin Xue

Compact micro-arc oxidation (MAO) coatings were prepared on Hf-Nb-Ta-Zr high entropy alloy (HEA) in phosphate electrolyte under bipolar pulse mode, and the effects of applied voltages on MAO coatings properties were evaluated. It was found that the coating growth rate on Hf-Nb-Ta-Zr HEA was considerably low, achieving a thickness of only 1.2–9 μm under the positive voltage of 430–530 V and negative voltage of 100 V for 20 min. P and H elements from the electrolyte was found to be incorporated into the coating and enriched at coating/HEA interface. Thickness, roughness, microhardness, bonding-strength and hydrophobicity of the coatings were enhanced with the increase of positive voltages. In addition, the coatings were found to possess superior insulation properties, with conductivities of ~5 × 10⁻¹² S/cm at 50 Hz. Electrochemical corrosion and tribo-corrosion tests revealed that the coatings have excellent corrosion resistance and wear resistance in 3.5 wt% NaCl solution. The coating prepared at +530 V/−100 V demonstrated the highest corrosion potential and the lowest corrosion current density, which is at least two orders of magnitude lower than the uncoated HEA. Moreover, under reciprocating wear against Si₃N₄ ball, the open-circuit potential (OCP) of three MAO coatings remained stable. The coating at +480 V/−100 V reveals both adhesive wear and fatigue wear mechanisms. Dense and insulating multilayer coating suppressed the Cl⁻ attack against the HEA during wear processes. The superior corrosion and wear resistance of MAO-coated HEA was attributed to a compact bi-amorphous multilayer structure.

在磷酸电解质双极脉冲模式下，在Hf-Nb-Ta-Zr高熵合金（HEA）上制备了致密微弧氧化（MAO）涂层，并研究了外加电压对MAO涂层性能的影响。结果表明，Hf-Nb-Ta-Zr HEA在430 ~ 530 V的正电压和100 V的负电压作用20 min时，涂层的生长速度非常慢，厚度仅为1.2 ~ 9 μm。电解液中的P和H元素被引入到涂层中，并在涂层/HEA界面富集。随着正电压的升高，涂层的厚度、粗糙度、显微硬度、结合强度和疏水性均增强。此外，发现涂层具有优异的绝缘性能，在50 Hz时电导率为~5 × 10−12 S/cm。电化学腐蚀和摩擦腐蚀试验表明，该涂层在3.5 wt% NaCl溶液中具有优异的耐蚀性和耐磨性。在+530 V/−100 V下制备的涂层表现出最高的腐蚀电位和最低的腐蚀电流密度，比未涂层的HEA低至少两个数量级。此外，在Si3N4球的往复磨损下，三种MAO涂层的开路电位（OCP）保持稳定。在+480 V/−100 V下，涂层显示出粘接磨损和疲劳磨损机制。致密绝缘的多层涂层抑制了磨损过程中Cl−对HEA的侵蚀。mao涂层HEA具有优异的耐蚀性和耐磨性，主要归因于其致密的双非晶多层结构。

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引用次数: 0

Effect of zirconium addition on the microstructure and mechanical properties of TiSiN films fabricated by reactive magnetron sputtering at room temperature 锆对反应磁控溅射制备TiSiN薄膜的微观结构和力学性能的影响

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

Surface & Coatings Technology

Pub Date : 2025-12-08 DOI: 10.1016/j.surfcoat.2025.133041

Evgeniy Boltynjuk , Claudia P. Mejía V. , Mohana V. Kante , Carlos M. Garzón , Jhon J. Olaya , Horst Hahn , Leonardo Velasco

Transition metal nitrides are widely employed in various industrial applications as hard protective films. The synthesis of such films usually requires elevated temperatures (up to 873 K), leading to increased resource consumption (e.g., for heating elements and cooling water) and higher electricity costs. Here we present a comprehensive investigation of structure and mechanical properties of TiSiZrN films synthesized at room temperature via reactive magnetron sputtering, eliminating the need for elevated substrate temperatures. Despite a broad compositional range, all films exhibit a single-phase cubic (

Fm \bar{3} m

) structure, with a crystallographic orientation transition from (111) to (200) at higher Zr concentrations. The progressive incorporation of Zr induces an increase in lattice parameter (from 4.245 to 4.628 Å), a reduction in crystallite size (16.5 to 12.6 nm), and a significant enhancement in mechanical properties. Notably, hardness increases by ~40 % (from 24.04 to 36.62 GPa), attributed to synergetic effect of Zr-induced densification of structure and solid solution strengthening. Furthermore, the film with the highest content of Zr demonstrates a plasticity index (H³/E²) of ~0.43, exceeding previously reported values for TiSiZrN films synthesized via magnetron sputtering. These observations demonstrate that high-hardness TiSiZrN films can be synthesized without thermal assistance, offering a more energy-efficient and environmentally favorable alternative for protective film applications.

过渡金属氮化物作为硬质保护膜广泛应用于各种工业领域。这种薄膜的合成通常需要更高的温度（高达873 K），导致资源消耗增加（例如，加热元件和冷却水）和更高的电力成本。本文研究了通过反应磁控溅射在室温下合成的TiSiZrN薄膜的结构和力学性能，从而消除了提高衬底温度的需要。尽管成分范围很广，但所有薄膜都表现为单相立方（Fm3¯m）结构，在较高的Zr浓度下，晶体取向从（111）转变为（200）。Zr的逐渐掺入导致晶格参数增加（从4.245到4.628 Å），晶粒尺寸减小（16.5到12.6 nm），力学性能显著增强。值得注意的是，由于zr诱导的组织致密化和固溶强化的协同作用，硬度提高了约40%（从24.04 GPa提高到36.62 GPa）。此外，Zr含量最高的薄膜的塑性指数（H3/E2）为~0.43，超过了先前报道的磁控溅射合成的TiSiZrN薄膜的数值。这些观察结果表明，高硬度TiSiZrN薄膜可以在没有热辅助的情况下合成，为保护膜应用提供了一种更节能、更环保的替代方案。

{"title":"Effect of zirconium addition on the microstructure and mechanical properties of TiSiN films fabricated by reactive magnetron sputtering at room temperature","authors":"Evgeniy Boltynjuk , Claudia P. Mejía V. , Mohana V. Kante , Carlos M. Garzón , Jhon J. Olaya , Horst Hahn , Leonardo Velasco","doi":"10.1016/j.surfcoat.2025.133041","DOIUrl":"10.1016/j.surfcoat.2025.133041","url":null,"abstract":"<div><div>Transition metal nitrides are widely employed in various industrial applications as hard protective films. The synthesis of such films usually requires elevated temperatures (up to 873 K), leading to increased resource consumption (e.g., for heating elements and cooling water) and higher electricity costs. Here we present a comprehensive investigation of structure and mechanical properties of TiSiZrN films synthesized at room temperature via reactive magnetron sputtering, eliminating the need for elevated substrate temperatures. Despite a broad compositional range, all films exhibit a single-phase cubic (<span><math><mi>Fm</mi><mover><mn>3</mn><mo>¯</mo></mover><mi>m</mi></math></span>) structure, with a crystallographic orientation transition from (111) to (200) at higher Zr concentrations. The progressive incorporation of Zr induces an increase in lattice parameter (from 4.245 to 4.628 Å), a reduction in crystallite size (16.5 to 12.6 nm), and a significant enhancement in mechanical properties. Notably, hardness increases by ~40 % (from 24.04 to 36.62 GPa), attributed to synergetic effect of Zr-induced densification of structure and solid solution strengthening. Furthermore, the film with the highest content of Zr demonstrates a plasticity index (H<sup>3</sup>/E<sup>2</sup>) of ~0.43, exceeding previously reported values for TiSiZrN films synthesized via magnetron sputtering. These observations demonstrate that high-hardness TiSiZrN films can be synthesized without thermal assistance, offering a more energy-efficient and environmentally favorable alternative for protective film applications.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"521 ","pages":"Article 133041"},"PeriodicalIF":6.1,"publicationDate":"2025-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145771947","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Study on microstructure and mechanical properties of laser cladding CBN grinding blocks assisted by various ultrasonic vibration powers 不同超声振动功率辅助下激光熔覆CBN磨削块的组织和力学性能研究

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

Surface & Coatings Technology

Pub Date : 2025-12-08 DOI: 10.1016/j.surfcoat.2025.133059

Zhengyu Sun , Ji Zhao , Tianbiao Yu , Yanchong Gao , Chong Yu , Yiqi Wang , Jiayu Sun , Xingyu Jiang

Grinding tools produced via laser cladding often exhibited issues such as cracking, compositional segregation, and irregular abrasive particle aggregation. In view of this, ultrasonic vibration-assisted laser cladding technology was employed in this study to fabricate cubic boron nitride (CBN) grinding blocks. The motion behavior and distribution of the CBN grits in the melting pool under ultrasonic vibration were analyzed by 3D measuring laser microscope and SEM. The microstructure of the interfaces between the substrate, the bonding material, and the grits at different ultrasonic power levels was characterized by EDS. Additionally, the effect of ultrasonic vibration on the microhardness and wear resistance of CBN grinding blocks was investigated using a hardness tester and a reciprocating friction and wear tester. The results show that ultrasonic vibration accelerated the floating of the CBN grits within the melting pool, inhibited the irregular aggregation of the grits, and promoted the homogenization of the coating composition, thus enhancing the overall microhardness and wear-resistant properties of CBN grinding blocks. At 30 % ultrasonic power, the number of grits on the block surface increased by 18.4 %. The microhardness of the substrate/bonding layer interface, the bonding layer, and the grinding layer surface increased by 34.1 %, 6.4 %, and 6.9 %, respectively. Besides, the coefficient of friction of the block decreased by 15.1 %, and the roughness of the ground surface of the workpiece decreased by 51.9 %.

通过激光熔覆生产的磨削工具经常出现裂纹、成分偏析和不规则磨料颗粒聚集等问题。为此，采用超声振动辅助激光熔覆技术制备立方氮化硼（CBN）磨块。采用三维测量激光显微镜和扫描电镜对超声振动下熔池中CBN磨粒的运动行为和分布进行了分析。利用能谱仪对不同超声功率下基体、结合材料和磨粒界面的微观结构进行了表征。利用硬度计和往复式摩擦磨损试验机研究了超声振动对CBN磨块显微硬度和耐磨性的影响。结果表明：超声振动加速了CBN磨粒在熔池内的漂浮，抑制了磨粒的不规则聚集，促进了涂层成分的均匀化，从而提高了CBN磨块的整体显微硬度和耐磨性能。当超声功率为30%时，砌块表面的磨粒数增加了18.4%。基体/结合层界面、结合层和磨削层表面的显微硬度分别提高了34.1%、6.4%和6.9%。摩擦块的摩擦系数降低了15.1%，工件表面粗糙度降低了51.9%。

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引用次数: 0

Microstructure and property evolution of FeNiCrCuAl/Inconel 718 composite coatings via laser-directed energy deposition 激光定向能沉积FeNiCrCuAl/Inconel 718复合镀层的组织与性能演变

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

Surface & Coatings Technology

Pub Date : 2025-12-08 DOI: 10.1016/j.surfcoat.2025.133063

Senao Gao , Huakai Mao , Tongxin Wang , Haitao Duan , Nian Liu , Guodong Zhang

High-entropy alloys (HEAs) are promising candidates for surface engineering applications owing to their outstanding mechanical properties and corrosion resistance, demonstrating significant potential to enhance the performance of widely used high-performance alloys such as Inconel 718 superalloy. In this research, FeNiCrCuAl HEA/IN718 composite coatings were fabricated using laser-directed energy deposition (LDED). The phase composition, microstructure, and properties of the coatings were systematically investigated. The results indicate that with increasing HEA content, the coatings transform from a single FCC phase to a dual-phase structure, accompanied by significant grain refinement, as well as notable enhancements in microhardness, wear resistance, and electrochemical corrosion resistance. The 75 % HEA/25 % IN718 composite coating exhibits the best overall performance, with a microhardness increase of 7.5 % compared to the pure HEA coating, and a wear volume below 50 % of that of other composite coatings. The performance improvement is attributed to the combined effects of grain refinement, solid solution, and precipitation strengthening, with grain refinement contributing 35.13 HV, precipitation strengthening contributing 15.13 HV, and solid solution strengthening playing a secondary role. Furthermore, a high HEA addition leads to an increase of orders of magnitude in the equivalent polarization resistance, a shift in corrosion behavior from localized pitting to predominantly uniform corrosion, and an improvement in the stability and thickness of the passive film.

高熵合金（HEAs）由于其优异的机械性能和耐腐蚀性，在表面工程应用中具有很大的潜力，可以提高广泛使用的高性能合金（如Inconel 718高温合金）的性能。本研究采用激光定向能沉积技术制备了FeNiCrCuAl HEA/IN718复合涂层。系统地研究了涂层的相组成、显微组织和性能。结果表明，随着HEA含量的增加，涂层由单一FCC相转变为双相结构，晶粒细化明显，显微硬度、耐磨性和耐电化学腐蚀性能均有显著提高。75% HEA/ 25% IN718复合涂层的综合性能最好，显微硬度比纯HEA涂层提高7.5%，磨损量低于其他复合涂层的50%。性能的提高是晶粒细化、固溶和析出强化共同作用的结果，其中晶粒细化贡献35.13 HV，析出强化贡献15.13 HV，固溶强化次之。此外，高HEA的加入导致等效极化电阻的数量级增加，腐蚀行为从局部点蚀转变为主要的均匀腐蚀，并且改善了钝化膜的稳定性和厚度。

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引用次数: 0

Effect of a cubic BN additive on growth behavior, wear and corrosion resistance of PEO-coatings on AZ31 magnesium alloy 立方氮化硼添加剂对AZ31镁合金peo涂层生长行为、耐磨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 : 2025-12-07 DOI: 10.1016/j.surfcoat.2025.133056

A.L. Zhaludkevich , S.A. Karpushenkov , X. Lu , L.S. Karpushenkava , S.K. Poznyak , A.M. Mal'tanova , A.V. Kanavalava , O.V. Ignatenko

Plasma electrolytic oxidation (PEO) is a promising method for producing strong and wear-resistant coatings using aqueous electrolyte solutions or molten salts. The use of different particles to modify the electrolyte composition is one of the ways to optimize the microstructure and composition of PEO coatings in order to improve their quality. Herein composite coatings with excellent wear resistance were synthesized on the surface of AZ31 magnesium alloy using plasma electrolytic oxidation (PEO) in an alkaline phosphate electrolyte with the addition of cubic boron nitride (c-BN) microparticles. This study demonstrated that c-BN particles are incorporated into the composite coating structure as a result of microdischarges occurring during the PEO process. SEM, XRD methods and EDS mapping confirm the inclusion of c-BN particles in the PEO coating structure. c-BN particles in the structure of PEO coatings significantly increase their wear resistance and do not have a negative impact on their corrosion resistance. Due to the excellent wear resistance, PEO coatings on Mg alloy with incorporated с-BN nanoparticles can be suitable for use in the automotive and other industries.

等离子体电解氧化（PEO）是一种很有前途的方法，可以使用水电解质溶液或熔盐生产坚固耐磨的涂层。利用不同颗粒改性电解质组成是优化PEO涂层微观结构和成分以提高其质量的途径之一。在碱性磷酸盐电解液中加入立方氮化硼（c-BN）微粒，采用等离子体电解氧化（PEO）方法在AZ31镁合金表面合成了具有优异耐磨性的复合涂层。本研究表明，由于PEO过程中发生的微放电，c-BN颗粒被纳入复合涂层结构中。SEM、XRD和EDS图谱证实了在PEO涂层结构中存在c-BN颗粒。在PEO涂层结构中加入c-BN颗粒，可显著提高其耐磨性，且对其耐腐蚀性无负面影响。由于具有优异的耐磨性，在镁合金上添加 - bn纳米颗粒的PEO涂层可以适用于汽车和其他行业。

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引用次数: 0

Improvement of crevice corrosion resistance of TA17 titanium alloy by active screen plasma nitriding after surface nanocrystallization 表面纳米化后活性屏等离子渗氮提高TA17钛合金的缝隙耐蚀性

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

Surface & Coatings Technology

Pub Date : 2025-12-07 DOI: 10.1016/j.surfcoat.2025.133032

Chengwei Zhang , Yan Gao

This study investigated the crevice corrosion behavior of TA17 (Ti-4Al-2V) titanium alloy above 100 °C in 3.5 % NaCl solution, focusing on original TA17 and surface-modified TA17 alloys. The artificial crevice with gradient size variation was achieved through an arc-shaped PTFE crevice former. The critical crevice temperature (CCT) of the original (O) TA17 alloy was determined to be 107 °C, below which crevice corrosion susceptibility was negligible. Crevice corrosion of O TA17 started and developed in the form of pitting corrosion, propagating inward to form a “deep sides, shallow center” morphology, accompanied by TiO₂, Ti₂O₃, and TiO formation. To enhance crevice corrosion resistance, TA17 alloy was subjected to active screen plasma nitriding after surface nanocrystallization via shot peening. The CCT of the original-nitrided (ON) TA17 sample and the shot peened-nitrided (SPN) TA17 sample was approximately 115 °C and 119 °C, respectively, both higher than that of the O TA17 sample. The SPN sample exhibited better crevice corrosion resistance than the ON sample, which could be attributed to the formation of nano-scale TiN on the SPN sample due to surface nanocrystallization, which improved the compactness of the nitrided layer and could better resist the penetration of corrosive solution. During crevice corrosion, TiN transformed sequentially to TiNₓO_y and TiO_x.

研究了TA17 （Ti-4Al-2V）钛合金在3.5% NaCl溶液中100℃以上的缝隙腐蚀行为，重点研究了原始TA17和表面改性TA17合金。采用圆弧型聚四氟乙烯造缝器实现了尺寸梯度变化的人工造缝。原始(O) TA17合金的临界裂纹温度（CCT）为107℃，低于该温度，裂纹腐蚀敏感性可以忽略不计。O TA17的缝隙腐蚀以点蚀的形式开始和发展，向内扩展形成“边深、中心浅”的形态，并伴随着TiO₂、Ti₂O₃和TiO的形成。为了提高TA17合金的抗缝隙腐蚀性能，采用喷丸强化表面纳米化后，对TA17合金进行了主动屏等离子渗氮处理。原始氮化（ON） TA17样品和喷丸氮化（SPN） TA17样品的CCT分别约为115°C和119°C，均高于O TA17样品。SPN样品比ON样品具有更好的缝隙耐蚀性，这可能是由于SPN样品表面纳米化形成了纳米级TiN，提高了氮化层的致密性，能够更好地抵抗腐蚀溶液的渗透。在缝隙腐蚀过程中，TiN依次转化为TiNₓOy和TiOx。

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引用次数: 0

Improvement in surface properties of AISI-5160 steel by transition metal (Nb, V) nitride coating through cathodic cage plasma deposition 阴极笼等离子沉积过渡金属（Nb， V）氮化涂层改善AISI-5160钢表面性能

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

Surface & Coatings Technology

Pub Date : 2025-12-07 DOI: 10.1016/j.surfcoat.2025.133058

M. Naeem , Habib-ur-Rehman , G.P. de Deus , I.A. de Souza , T.H.C. Costa , M. Abrar , J.C. Díaz-Guillén , R.R.M. Sousa

This study investigates the structural, mechanical, and tribological properties of AISI-5160 steel modified via cathodic cage plasma deposition (CCPD) using vanadium and niobium cathodic cages at 400 and 450 °C. X-ray diffraction (XRD) analysis confirms the successful formation of vanadium nitride (VN) and niobium nitride (Nb₄N₅) coatings, with enhanced deposition at 450 °C. Nano-indentation testing reveals significant improvements in surface hardness, reaching up to 16.2 GPa for vanadium nitride coatings, which is more than 8 times that of untreated material. Surface morphology analysis reveals homogeneous and dense nitride layers, with cross-sectional SEM indicating greater thickness for niobium nitride coatings. Despite higher thickness for Nb₄N₅, vanadium nitride coatings demonstrate superior mechanical and wear properties due to their dense NaCl-type crystal structure. Wear testing revealed a 91 % reduction in wear rate for VN coatings deposited at 450 °C compared to untreated steel. Further SRIM/TRIM simulations indicate that the deposition behavior differences arise from the angular distribution and sticking coefficients of sputtered atoms rather than sputtering yield alone. These findings suggest that CCPD with vanadium cathodic cages at 450 °C provides a significantly effective route to enhance the wear resistance of AISI-5160 steel for wear-resistant applications.

研究了在400℃和450℃条件下，利用钒和铌阴极保持架对AISI-5160钢进行阴极保持架等离子沉积（CCPD）改性后的结构、力学和摩擦学性能。x射线衍射（XRD）分析证实了氮化钒（VN）和氮化铌（Nb₄N₅）涂层的成功形成，并在450°C下增强了沉积。纳米压痕测试表明，氮化钒涂层的表面硬度显著提高，达到16.2 GPa，是未处理材料的8倍以上。表面形貌分析显示均匀致密的氮化层，截面扫描电镜显示氮化铌涂层的厚度更大。尽管Nb₄N₅的厚度更高，但氮化钒涂层由于其致密的nacl型晶体结构而表现出优异的机械和磨损性能。磨损测试表明，与未经处理的钢相比，在450°C下沉积的VN涂层的磨损率降低了91%。进一步的SRIM/TRIM模拟表明，沉积行为的差异是由溅射原子的角分布和粘着系数引起的，而不仅仅是溅射产率。这些研究结果表明，在450°C下，钒阴极保持架的CCPD为提高AISI-5160钢的耐磨性提供了一条显着有效的途径。

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