后处理方法对MF-DC磁控溅射铝涂层耐蚀性的影响

IF 2.3 4区 材料科学 Q2 METALLURGY & METALLURGICAL ENGINEERING Anti-corrosion Methods and Materials Pub Date : 2023-11-10 DOI:10.1108/acmm-07-2023-2857
Wensheng Li, Yiding Zhang, Yanwei Xu, Guangming Jiao, Dunwen Zuo, Wenting Lu, Quanshi Cheng, Jiaqi Yu, Yajun Chen
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引用次数: 0

摘要

目的研究后处理对Ti-6Al-4V (TC4)紧固件表面Al涂层防腐性能的影响。采用中频和直流复合磁控溅射技术在TC4上制备了不同层状结构的Al涂层。采用扫描电镜和原子力显微镜对涂层的横截面形貌和表面粗糙度进行了表征。用电化学方法对其耐蚀性进行了评价。采用Alodine化学转化、Ar +轰击及以上两种方法相结合的后处理方法对单层涂层进行后处理。结果表明,双层和三层涂层中的界面减少了缺陷。Ar +轰击降低了腐蚀电流密度,Alodine化学转化导致更高的点蚀电位。复合后处理具有最高的极化电阻。随着层数的增加,铝涂层的耐蚀性增强。结合Ar +轰击和Alodine化学转化两种后处理,可以全面提高Al涂层的耐蚀性。
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Effect of post-treated methods on corrosion resistance of MF-DC magnetron sputtering Al coating on TC4
Purpose This study aims to investigate the effect of post-treatment on anti-corrosion performance of Al coating on the surface of Ti-6Al-4V (TC4) fastener. Design/methodology/approach The Al coatings with different layer structures were prepared on TC4 by middle-frequency and direct-current combined magnetron sputtering. The cross-sectional morphology and surface roughness of coatings were characterized by scanning electron microscope and atomic force microscope. The corrosion resistance was evaluated by electrochemical method. The monolayer coating was post-treated by Alodine chemical conversion, Ar + bombardment and a combination of two methods above. Findings The results show that the interfaces in bilayer and trilayer coatings reduce the defects. Ar + bombardment reduces the corrosion current density, and Alodine chemical conversion leads to a higher pitting corrosion potential. The combined post-treatment has the highest polarization resistance. Originality/value The corrosion resistance of the Al coating is enhanced as the layer quantity increases. The combination of two post-treatments, Ar + bombardment and Alodine chemical conversion, could achieve an overall improvement in corrosion resistance of Al coating.
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来源期刊
Anti-corrosion Methods and Materials
Anti-corrosion Methods and Materials 工程技术-冶金工程
CiteScore
2.80
自引率
16.70%
发文量
61
审稿时长
13.5 months
期刊介绍: Anti-Corrosion Methods and Materials publishes a broad coverage of the materials and techniques employed in corrosion prevention. Coverage is essentially of a practical nature and designed to be of material benefit to those working in the field. Proven applications are covered together with company news and new product information. Anti-Corrosion Methods and Materials now also includes research articles that reflect the most interesting and strategically important research and development activities from around the world. Every year, industry pays a massive and rising cost for its corrosion problems. Research and development into new materials, processes and initiatives to combat this loss is increasing, and new findings are constantly coming to light which can help to beat corrosion problems throughout industry. This journal uniquely focuses on these exciting developments to make essential reading for anyone aiming to regain profits lost through corrosion difficulties. • New methods, materials and software • New developments in research and industry • Stainless steels • Protection of structural steelwork • Industry update, conference news, dates and events • Environmental issues • Health & safety, including EC regulations • Corrosion monitoring and plant health assessment • The latest equipment and processes • Corrosion cost and corrosion risk management.
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