硼对外部磁场辅助激光金属沉积涂层的微观结构、磨损和腐蚀特性的影响

IF 16.4 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY
Kang Qi, Long Jiang
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引用次数: 0

摘要

通过磁场辅助 Co 基激光金属沉积法在 300 M 超高强度钢上制备了不同硼含量的涂层。研究了硼含量对涂层磁性能、机械性能、摩擦磨损性能和耐腐蚀性能的影响。研究结果表明,在 35 mT 交变磁场中向钴合金中添加 6 wt% 的硼有利于细化微观结构,从而改善涂层的机械性能。本研究还讨论了硼含量对涂层耐磨性和耐腐蚀性的影响。结果表明,硼的加入增强了磁致伸缩效应,在保证硬度的同时降低了激光金属沉积涂层的弹性模量,从而提高了激光金属沉积层的耐磨性和耐腐蚀性。涂层硬度可达 1215 HV。与基体相比,涂层的摩擦系数和腐蚀电流密度分别降低了 26.9% 和 60.2%。这项工作有助于促进激光金属沉积技术的应用,降低成本,确保性能。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Effects of boron on microstructure, wear and corrosion properties of external magnetic field assisted laser metal deposition coatings
Coatings with different boron content were prepared by magnetic field-assisted Co-based laser metal deposition on 300 M ultra-high strength steel. The effects of boron content on the magnetic properties, mechanical properties, friction and wear properties, and corrosion resistance of the coating were investigated. The research results indicate that adding 6 wt% of boron to cobalt alloy in a 35 mT alternating magnetic field is beneficial for refining the microstructure, which can improve the mechanical properties of the coating. This research also discusses the effect of boron content on the wear and corrosion resistance of the coating. The results show that adding boron content enhances the magnetostrictive effect, and reduces the elastic modulus of the laser metal deposition coating while ensuring its hardness, thereby improving the wear and corrosion resistance of the laser metal deposition layer. The hardness of the coating can reach 1215 HV. The friction coefficient and corrosion current density of the coating are reduced by 26.9% and 60.2% respectively compared with the substrate. This work can help promote the application of laser metal deposition technology, reduce costs, and ensure performance.
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来源期刊
Accounts of Chemical Research
Accounts of Chemical Research 化学-化学综合
CiteScore
31.40
自引率
1.10%
发文量
312
审稿时长
2 months
期刊介绍: Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.
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