Surface & Coatings Technology最新文献_第3页

Synergistic regulation of hydrogen trapping-diffusion at grain boundaries and interfacial hydrogen resistance in La₂O₃/Y-doped Cr₂O₃-based coatings La₂O₃/ y掺杂Cr₂O₃基涂层中晶界氢捕获扩散和界面氢阻力的协同调节

IF 5.3 2区材料科学

Surface & Coatings Technology Pub Date : 2025-07-08 DOI: 10.1016/j.surfcoat.2025.132464

Jianglong Chen , Yanhui Hou , Guangqiang Li

{"title":"Synergistic regulation of hydrogen trapping-diffusion at grain boundaries and interfacial hydrogen resistance in La₂O₃/Y-doped Cr₂O₃-based coatings","authors":"Jianglong Chen , Yanhui Hou , Guangqiang Li","doi":"10.1016/j.surfcoat.2025.132464","DOIUrl":"10.1016/j.surfcoat.2025.132464","url":null,"abstract":"<div><div>To mitigate hydrogen embrittlement in hydrogen-transport pipeline steels under prolonged hydrogen exposure, this study optimizes the hydrogen barrier performance of Cr₂O₃-based coatings via plasma spraying and investigates the mechanistic role of La₂O₃/Y doping using first-principles calculations. The Cr₂O₃/La₂O₃ coating delayed hydrogen breakthrough time by 21-fold and reduced steady-state current density by 95.9 %, while the Cr₂O₃/Y coating demonstrated superior performance with a 27-fold delay in breakthrough time and a 97.8 % current density reduction. Mechanistic analysis revealed that La enhances H diffusion barriers at interstitial sites and forms efficient hydrogen traps via oxygen vacancies with ultralow insertion energy, whereas Y achieves dual regulation: interstitial trapping through low-energy sites and vacancy blocking via lattice strain induced by Cr-O/Y-O bond length mismatch. Atomic-scale insights further elucidated how rare-earth oxides (La₂O₃, Y₂O₃) regulate grain boundaries, vacancy defects, and hydrogen diffusion pathways, establishing a synergistic framework for designing high-performance hydrogen barrier coatings. These findings bridge atomic-scale mechanisms to macroscopic performance, offering a theoretical foundation for optimizing anti‑hydrogen coating systems.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"513 ","pages":"Article 132464"},"PeriodicalIF":5.3,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144597002","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

Composite strategy for improving the thermal barrier application of high-entropy alloy coating 提高高熵合金涂层热障应用的复合策略

IF 5.3 2区材料科学

Surface & Coatings Technology Pub Date : 2025-07-08 DOI: 10.1016/j.surfcoat.2025.132472

Xiangzhao Wang , Haihua Yao , Fengfeng Xu , Yange Yang , Xiaole Han , Yu Zhao , Zhen Tan , Xingye Guo , Dingyong He , Zheng Zhou

{"title":"Composite strategy for improving the thermal barrier application of high-entropy alloy coating","authors":"Xiangzhao Wang , Haihua Yao , Fengfeng Xu , Yange Yang , Xiaole Han , Yu Zhao , Zhen Tan , Xingye Guo , Dingyong He , Zheng Zhou","doi":"10.1016/j.surfcoat.2025.132472","DOIUrl":"10.1016/j.surfcoat.2025.132472","url":null,"abstract":"<div><div>High-entropy alloys (HEAs) attracted great interest in a wide range of structural and functional application, such as the newly developed metal-based thermal barrier coatings. However, the high temperature-sensitivity of thermal conductivity made a challenge for their practice. Herein, we proposed a composite strategy to address this problem and synthesized AlCoCrFeNiTi HEA coatings composited with yttria-stabilized zirconia (YSZ) additions. The metallic matrix of composite coatings inherits a simple body-centered cubic (BCC) structure and a microstructure feature of ultrafine grains in size of 200–500 nm, whereas the dispersed YSZ additions depict a typical tetragonal structure and a high deformation/deposition-sensitivity to their initial content. The heterogeneous splats form a weak contact interface due to the rapid-quenching of droplets and the nanoscale oxide film formed on the surface of HEA splats. The moderate YSZ additions with lamellar deposition structure effectively hinder the radial heat flux, granting the HY10 (HEA-10%YSZ) composite coating an extremely low thermal conductivity of 3.63 W/(m·K) at 800 °C, whose underlining mechanism is disclosed as the suppression of electron thermal conductivity. Meanwhile, the HY10 composite coating maintains a high fracture toughness of 2.90 MPa·m<sup>1/2</sup> that is comparable to the monolithic HEA coating, demonstrating a limited damage of brittle ceramic particles on mechanical properties. The proposed composite strategy paves the way for improving the thermal barrier application of HEA coatings and the regulating mechanisms provide an inspiration for future works aiming to formulate the design of extensive metal-matrix composite coatings.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"513 ","pages":"Article 132472"},"PeriodicalIF":5.3,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144596996","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

Investigation of CMAS corrosion resistance for ZrO2-YTaO4 thermal barrier material at 1250 °C ZrO2-YTaO4热障材料1250℃抗CMAS腐蚀性能研究

IF 5.3 2区材料科学

Surface & Coatings Technology Pub Date : 2025-07-08 DOI: 10.1016/j.surfcoat.2025.132471

Bingbing Yin , Zhiwei He , Zhiwen Hou , Jianguo Lin , Dengbin Chen , Linying Xie , Zhikun Sun , Yi Yang

{"title":"Investigation of CMAS corrosion resistance for ZrO2-YTaO4 thermal barrier material at 1250 °C","authors":"Bingbing Yin , Zhiwei He , Zhiwen Hou , Jianguo Lin , Dengbin Chen , Linying Xie , Zhikun Sun , Yi Yang","doi":"10.1016/j.surfcoat.2025.132471","DOIUrl":"10.1016/j.surfcoat.2025.132471","url":null,"abstract":"<div><div>The phase transformation instability and corrosion failure are the two main forms of degradation for thermal barrier coating (TBC) in the high temperature and CaO-MgO-Al<sub>2</sub>O<sub>3</sub>-SiO<sub>2</sub> (CMAS) environments. The addition of tantalum materials can effectively improve the phase stability of yttria-stabilized zirconia (YSZ) TBC. However, the effect of tantalum materials on the corrosion resistance performance and the mechanism of the coating against CMAS need to be analyzed in detail. A series of researches were conducted on the CMAS corrosion behavior of the novel ZrO<sub>2</sub>-YTaO<sub>4</sub> material and the mechanism by which it resists CMAS. In order to obtain a composition with excellent comprehensive performance and CMAS resistance for TBC, the mechanical properties of the samples are discussed. The results demonstrated that, compared with YSZ, the ZrO<sub>2</sub>-YTaO<sub>4</sub> material exhibited superior phase stability, mechanical properties and CMAS resistance property. When the Ta concentration in the ceramic matrix increases, it can lead to a reduction in the reaction between Y and CMAS, which can inhibit the spheroidisation of the TBC. Besides, a dense Ca<sub>2</sub>Ta<sub>2</sub>O<sub>7</sub> layer forms at the corrosion interface, the infiltration channels of CMAS in the ceramic are blocked, and the inter-diffusion between the ceramic and molten CMAS is inhibited, which effectively improves the corrosion resistance. On the other hand, the reduction in the Ca content in the molten CMAS resulting from the formation of the Ca<sub>2</sub>Ta<sub>2</sub>O<sub>7</sub> layer leads to an increase in the viscosity of the CMAS and prevents further infiltration into the matrix.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"513 ","pages":"Article 132471"},"PeriodicalIF":5.3,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144589116","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

Enhancement of wear resistance in AZ31 alloy by laser melt injection of high-volume-fraction titanium carbide particles 激光熔融注射高体积分数碳化钛颗粒增强AZ31合金耐磨性

IF 5.3 2区材料科学

Surface & Coatings Technology Pub Date : 2025-07-07 DOI: 10.1016/j.surfcoat.2025.132466

Zhenzhen Gui , Pengxi Liu , Keying Zhu , Yuanyuan Lu , Chaowen Guo , Tao Zou , Liu Cao , Fan Zhang , Tao Zhang , Dejian Liu

{"title":"Enhancement of wear resistance in AZ31 alloy by laser melt injection of high-volume-fraction titanium carbide particles","authors":"Zhenzhen Gui , Pengxi Liu , Keying Zhu , Yuanyuan Lu , Chaowen Guo , Tao Zou , Liu Cao , Fan Zhang , Tao Zhang , Dejian Liu","doi":"10.1016/j.surfcoat.2025.132466","DOIUrl":"10.1016/j.surfcoat.2025.132466","url":null,"abstract":"<div><div>In this study, defect-free and crack-free TiC<sub>p</sub>/AZ31 composite coatings with a high TiC volume fraction (30–40 vol%) were successfully fabricated. The influence of the high ceramic volume fraction on the properties of these coatings was systematically investigated. The results reveal that a laser energy density of 40–60 W/mm<sup>2</sup> induces minimal dissolution of TiC particles in the molten pool, ensuring essential metallurgical reactions between the magnesium matrix and TiC. This process facilitates the formation of a semi-coherent interface between Mg and TiC while effectively suppressing the generation of defects such as porosity and cracks in the molten pool. As the TiC volume fraction increases, the microhardness of the TiC<sub>p</sub>/AZ31 composite reaches 485 HV, representing a remarkable 766 % enhancement compared to the AZ31 matrix. Concurrently, the wear rate decreases by up to 74 % relative to the AZ31 matrix. The incorporation of TiC shifts the dominant wear mechanism of the magnesium matrix composite from adhesive wear to mild abrasive wear. The significant improvement in the wear resistance of the TiC<sub>p</sub>/AZ31 composite coatings holds promise for providing a novel solution for the application of magnesium alloys in lightweight, wear-resistant composite materials.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"513 ","pages":"Article 132466"},"PeriodicalIF":5.3,"publicationDate":"2025-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144597003","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

Progress in magnetically responsive cilia for surface applications: From engineering fabrication to functionality 表面磁响应纤毛的研究进展：从工程制造到功能性

IF 5.3 2区材料科学

Surface & Coatings Technology Pub Date : 2025-07-07 DOI: 10.1016/j.surfcoat.2025.132462

Wenrong Shen , Zhaoyang Zhang , Kun Xu , Hao Zhu , Shuai Yang , Jiabei Zhang , Jingtao Wang , Yang Liu , Chaolong Jin

{"title":"Progress in magnetically responsive cilia for surface applications: From engineering fabrication to functionality","authors":"Wenrong Shen , Zhaoyang Zhang , Kun Xu , Hao Zhu , Shuai Yang , Jiabei Zhang , Jingtao Wang , Yang Liu , Chaolong Jin","doi":"10.1016/j.surfcoat.2025.132462","DOIUrl":"10.1016/j.surfcoat.2025.132462","url":null,"abstract":"<div><div>Magnetically responsive ciliary systems, inspired by biological cilia, exhibit characteristics such as contactless actuation, high-precision control, and environmental adaptability. Potential applications are found in several areas, such as biomedicine, environmental engineering, and flexible electronics. This review begins by systematically organizing its biological foundation, analyzing the working mechanisms of natural cilia in motion propulsion, surface cleaning, and environmental sensing. It then elaborates in detail on the design strategies of polymer-based magnetic composite materials and micro-nano manufacturing techniques, with a focus on structural design methods. By establishing magnetic-force coupling mathematical models and multi-physical field simulations, the dynamic response mechanisms of the cilia arrays are revealed. Furthermore, the innovative applications of these principles in superhydrophobic interface manipulation, soft robotics, and intelligent sensing systems are summarized. Finally, this review concludes with an overview of the current limitations of magnetically responsive cilia and perspectives for future advancements. This work aims to provide a comprehensive and systematic reference for the integrated material-structure-function design of magnetically responsive cilia.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"513 ","pages":"Article 132462"},"PeriodicalIF":5.3,"publicationDate":"2025-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144569884","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

Crack mitigation and wear performance of high-strength steel coatings deposited by high-speed laser cladding 高速激光熔覆高强钢涂层的裂纹缓裂及磨损性能

IF 5.3 2区材料科学

Surface & Coatings Technology Pub Date : 2025-07-07 DOI: 10.1016/j.surfcoat.2025.132467

Joha Shamsujjoha , Shirley Garcia Ruano , Jeremy Siegfried , Brandon Baker , Michael Thurston , Mark Walluk , Ronald Holding , Aravind Jonnalagadda

{"title":"Crack mitigation and wear performance of high-strength steel coatings deposited by high-speed laser cladding","authors":"Joha Shamsujjoha , Shirley Garcia Ruano , Jeremy Siegfried , Brandon Baker , Michael Thurston , Mark Walluk , Ronald Holding , Aravind Jonnalagadda","doi":"10.1016/j.surfcoat.2025.132467","DOIUrl":"10.1016/j.surfcoat.2025.132467","url":null,"abstract":"<div><div>This study investigates the fabrication of defect-free Rockit® 606, a high‑carbon, vanadium- and chromium-enriched precipitation-hardening martensitic steel coating, using high-speed laser cladding (HSLC). Compared to conventional laser cladding, HSLC offers higher deposition efficiency, improved coating quality, minimal thermal distortion, and a reduced heat-affected zone. Various HSLC parameters—including laser power, travel speed, powder feed rate, and overlap distance—were optimized to achieve superior coating properties.</div><div>Microstructural analysis revealed solidification cracks in coatings deposited on carburized steel, regardless of processing parameters. However, preheating the substrate to 250 °C effectively eliminated cracking by reducing thermal gradients. The coatings exhibited a columnar dendritic microstructure, with coarser dendrites near the substrate and finer dendrites towards the surface. Hardness measurements confirmed that all coatings significantly exceeded the industry-specified threshold of 60 HRC, with preheating having minimal effect on overall hardness distribution.</div><div>Reciprocating sliding wear tests demonstrated a substantial improvement in wear resistance for the defect-free HSLC coatings compared to baseline carburized steel. These findings underscore the potential of HSLC for producing high-performance, wear-resistant coatings suitable for industrial applications.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"513 ","pages":"Article 132467"},"PeriodicalIF":5.3,"publicationDate":"2025-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144580733","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

Enhancing fretting corrosion resistance of micro-arc oxidation coating with Y2O3 nanoparticles on biomedical Ti6Al4V alloy for hip implants Y2O3纳米颗粒微弧氧化涂层增强医用Ti6Al4V合金髋关节植入物抗微动腐蚀性能

IF 5.3 2区材料科学

Surface & Coatings Technology Pub Date : 2025-07-07 DOI: 10.1016/j.surfcoat.2025.132468

Zhangyue Qin , Yali Zhang , Xiaogang Zhang , Zhongmin Jin

{"title":"Enhancing fretting corrosion resistance of micro-arc oxidation coating with Y2O3 nanoparticles on biomedical Ti6Al4V alloy for hip implants","authors":"Zhangyue Qin , Yali Zhang , Xiaogang Zhang , Zhongmin Jin","doi":"10.1016/j.surfcoat.2025.132468","DOIUrl":"10.1016/j.surfcoat.2025.132468","url":null,"abstract":"<div><div>In this study, MAO coatings were fabricated on biomedical Ti6Al4V alloy by incorporating varying concentrations of Y<sub>2</sub>O<sub>3</sub> nanoparticles into MAO electrolyte. The growth characteristics, microstructure, and mechanical properties of the coatings were then analyzed in detail. Fretting corrosion experiments were subsequently conducted under conditions simulating the actual head-neck interface of artificial hip joints. The influence of Y<sub>2</sub>O<sub>3</sub> nanoparticle additives on the coatings' fretting corrosion performance was comprehensively evaluated. The results showed that the incorporation of Y<sub>2</sub>O<sub>3</sub> increased both the transient processing voltage and the Zeta potential of the electrolyte, thereby accelerating coating growth. Y<sub>2</sub>O<sub>3</sub> (4 g/L, 8 g/L) markedly enhanced the density, uniformity, and thickness of the coating, resulting in improved microstructural characteristics. Additionally, Y<sub>2</sub>O<sub>3</sub> (4 g/L, 8 g/L) significantly improved the mechanical properties of the coating, including hardness, elastic modulus, and adhesion strength. Moreover, Y<sub>2</sub>O<sub>3</sub> (4 g/L, 8 g/L) substantially decreased the friction coefficient, frictional energy dissipation, fretting corrosion volume, and corrosion current, thereby significantly enhancing the coating's resistance to fretting corrosion. Compared with the substrate and coatings without Y<sub>2</sub>O<sub>3</sub>, the Y<sub>2</sub>O<sub>3</sub>-coatings (8 g/L) improved fretting corrosion resistance by factors of 10.7 and 4.7, respectively. Notably, after the addition of Y<sub>2</sub>O<sub>3</sub> (8 g/L), the dominant fretting damage mechanism transitioned from fatigue and adhesive wear to scratching and minor deformation. The findings of this study lay a valuable foundation for the optimization of MAO coatings and the protection of the head-neck interface in artificial hip joints.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"513 ","pages":"Article 132468"},"PeriodicalIF":5.3,"publicationDate":"2025-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144580734","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

Role of oxygen plasma for improved preparation of Cu/CNT Nanohybrids by RF sputtering 氧等离子体在射频溅射制备Cu/CNT纳米杂化材料中的作用

IF 5.3 2区材料科学

Surface & Coatings Technology Pub Date : 2025-07-07 DOI: 10.1016/j.surfcoat.2025.132469

C. Chandraiahgari , G. Gottardi , G. Speranza , A. Pedrielli , V. Micheli , R. Bartali , N. Laidani , M. Testi

{"title":"Role of oxygen plasma for improved preparation of Cu/CNT Nanohybrids by RF sputtering","authors":"C. Chandraiahgari , G. Gottardi , G. Speranza , A. Pedrielli , V. Micheli , R. Bartali , N. Laidani , M. Testi","doi":"10.1016/j.surfcoat.2025.132469","DOIUrl":"10.1016/j.surfcoat.2025.132469","url":null,"abstract":"<div><div>Carbon nanotubes (CNTs) decorated with nanoparticles (NPs) have unique properties as catalyst carriers in sustainable energy technologies. This study mainly focuses on the optimal dry-preparation of nanohybrids made of copper (Cu)-coated CNTs through a clean magnetron sputtering technique. A distinct approach of oxygen (O<sub>2</sub>) plasma surface functionalization is combined with the in-situ state of the deposition stage, either in static or in piezo-vibrating mode. The corresponding impact that controls the uniform deposition, chemical composition, and material loading was investigated. Dynamic light scattering (DLS) and Thermogravimetric analysis (TGA) were used to identify the best preparation conditions that impart the maximum surface modifications for improved hydrophilicity and material loading. The vibrating mode of the deposition stage continuously tumbles the CNTs during the sputtering and achieves all-around deposition. O<sub>2</sub> plasma has played a crucial role in grafting the surface functional groups acting as nucleation centers and attracting the sputtered Cu species with stronger interaction. The findings emphasize the advantages of O<sub>2</sub> plasma, particularly combined with vibrating mode for tailoring the surface properties and Cu loading at 1D nanoscale. These results demonstrated the versatility of the dry-synthesis technique, allowing the controlled preparation of high-purity nanohybrid powders with a scale-up potential.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"513 ","pages":"Article 132469"},"PeriodicalIF":5.3,"publicationDate":"2025-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144580735","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

Engineering magnesium alloys with robust discrete superhydrophobicity for corrosion mitigation 具有稳健离散超疏水性的工程镁合金缓蚀剂

IF 5.3 2区材料科学

Surface & Coatings Technology Pub Date : 2025-07-07 DOI: 10.1016/j.surfcoat.2025.132470

Ruijuan Shao , Junjie Chen , Baoshan Xu , Xiaowei Xun , Yunhao Zhao , Ke Zhou , Mengyan Yu , Zhichao Huang , Dongmian Zang

{"title":"Engineering magnesium alloys with robust discrete superhydrophobicity for corrosion mitigation","authors":"Ruijuan Shao , Junjie Chen , Baoshan Xu , Xiaowei Xun , Yunhao Zhao , Ke Zhou , Mengyan Yu , Zhichao Huang , Dongmian Zang","doi":"10.1016/j.surfcoat.2025.132470","DOIUrl":"10.1016/j.surfcoat.2025.132470","url":null,"abstract":"<div><div>This study demonstrates the fabrication of stable SnO₂ layers on AZ31B magnesium alloy using SnCl₂ as a precursor through solution immersion and oxygen-assisted thermal treatment. Subsequent stearic acid modification conferred superhydrophobicity as well as exceptional mechanochemical/long-term durability to the coatings. Tafel polarization tests demonstrated that the superhydrophobic surface displayed exceptional corrosion resistant property. Specifically, the superhydrophobic surface reduced corrosion current density to 0.794 % of that observed on the bare magnesium alloy (1.259 × 10<sup>−6</sup> A cm<sup>−2</sup> vs. 1.585 × 10<sup>−4</sup> A cm<sup>−2</sup>). Additionally, an interfacial model for corrosion resistance mechanism was developed to illuminate the intricate synergistic effect by which air-trapped superhydrophobicity and the inherent chemical stability of SnO₂ collaborate to impede electrochemical degradation processes in an environment with chloride ions present.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"513 ","pages":"Article 132470"},"PeriodicalIF":5.3,"publicationDate":"2025-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144596998","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

Research on the ablation damage evolution of Al2O3/PF composite coatings deposited by supersonic plasma spraying on resin matrix surfaces 超声等离子喷涂Al2O3/PF复合涂层烧蚀损伤演化研究

IF 5.3 2区材料科学

Surface & Coatings Technology Pub Date : 2025-07-07 DOI: 10.1016/j.surfcoat.2025.132463

Shuang Chen , Dingxiang He , Yunlong Zhu , Qiqing Peng , Ming Liu , Baodan Zhang , Rui Gao , Yujie Zhou , Guozheng Ma , Haidou Wang

{"title":"Research on the ablation damage evolution of Al2O3/PF composite coatings deposited by supersonic plasma spraying on resin matrix surfaces","authors":"Shuang Chen , Dingxiang He , Yunlong Zhu , Qiqing Peng , Ming Liu , Baodan Zhang , Rui Gao , Yujie Zhou , Guozheng Ma , Haidou Wang","doi":"10.1016/j.surfcoat.2025.132463","DOIUrl":"10.1016/j.surfcoat.2025.132463","url":null,"abstract":"<div><div>As a key component in modern defense weapon systems, resin-based insulating supports are indispensable in electromagnetic rail launchers. Although they exhibit excellent mechanical properties and electrical insulation, their poor ablation and erosion resistance limits their application in harsh service environments. In this study, Al<sub>2</sub>O<sub>3</sub>/PF composite coatings were successfully fabricated by alternately spraying Al<sub>2</sub>O<sub>3</sub> and Al<sub>2</sub>O<sub>3</sub>/PF powders onto glass fiber-reinforced epoxy resin substrates using a supersonic plasma spraying system. Ablation behavior and degradation were investigated under varying ablation distances and ablation times. Response surface models were established to correlate ablation distance and cycle number with coating performance, including elastic modulus, hardness, and surface morphology, and to explore the spatiotemporal evolution and underlying mechanisms of coating degradation during ablation. The results indicate that coatings ablated at a distance of 110 mm exhibited superior performance compared to those at 90 mm and 100 mm. At distances of 90 mm and 100 mm, complete surface carbonization occurred after 100 and 150 ablation times. In contrast, at 110 mm, the degree of carbonization gradually increased with the number of ablation times. The constructed response surfaces revealed the spatiotemporal characteristics of the ablation-induced damage. These findings provide important theoretical insights into the damage evolution mechanisms of composite coatings and offer a basis for evaluating the performance and failure behavior of resin-based insulating supports in extreme environments.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"513 ","pages":"Article 132463"},"PeriodicalIF":5.3,"publicationDate":"2025-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144589112","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