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超高速激光熔覆制备耐腐蚀涂层研究进展

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首先总结了涂层材料元素组成对耐腐蚀性能的影响;其次,从钝化膜、显微组织、位错、低角度晶界、热腐蚀动力学等几个方面总结了其与耐腐蚀性的联系;第三,综述了 EHLA与场外辅助技术结合对所制备涂层耐腐蚀性的影响;最后,总结和展望了超高速激光熔覆所制备涂层耐腐蚀性能的强化方法.
Research Progress on Preparation of Corrosion-resistant Coatings by Extreme High-speed Laser Material Deposition
With the rapid advancement of industrial technology in recent years,there are higher re-quirements in better surface related performance,such as wear resistance,heat resistance,corrosion re-sistance etc.for some key industrial equipment components.Extreme high-speed laser material deposi-tion,as an emerging surface treatment technology,it subverts the traditional metal surface treatment pro-cess,using high-energy laser as the heat source,alloy powder as the cladding material.It realizes a sig-nificant increase in cladding efficiency through the optimal coupling of powder and laser,and improves the surface properties of the workpiece by cladding coating with special properties with high efficiency and excellent surface accuracy,which also provides many advantages for the preparation of corrosion-re-sistant coatings.This paper firstly summarizes the influence of the chemical composition of coating mate-rials on the corrosion resistance of coatings.Secondly,it summarizes the relation between passivation film,microstructure,dislocations,low-angle grain boundaries,and thermal corrosion kinetics.Thirdly,it re-views the effect of EHLA combined with off-site assisted technology on corrosion resistance.Lastly,it summarizes and outlooks on the enhancement methods of the corrosion resistance of the coatings pre-pared by ultrahigh-speed laser melting and cladding.

extreme high-speed laser material depositioncorrosion behaviorcoating

杨海云、刘春泉、熊芬、陈敏纳、谢岳林、彭龙生、孙胜、刘海洲

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湖南工学院材料科学与工程学院 衡阳 421002

湖南力方轧辊有限公司(湖南省高耐磨合金材料先进制造工程技术研究中心) 衡阳 421681

新余华峰特钢有限公司 新余 338099

超高速激光熔覆 腐蚀行为 涂层

湖南省科技人才托举工程湖南省自然科学基金湖南省创新型省份建设专项科普专题湖南省高耐磨合金材料先进制造工程技术研究中心创新能力提升项目湖南省应用特色学科材料科学与工程学科衡阳市"小荷"科技人才项目湖南省"机械工程"学科科技创新平台开放课题湖南工学院自科培育项目国家级大学生创新创业训练计划项目

2023TJ-X102023JJ501082023ZK43162023ZYQ030湘教通[2022]351号衡市科协字[2022]68号KFKA22052022HY007S202311528056X

2024

10.11902/1005.4537.2023.369

中国腐蚀与防护学报
中国腐蚀与防护学会 中国科学院金属研究所

中国腐蚀与防护学报

CSTPCD北大核心
影响因子：0.819
ISSN：1005-4537
年,卷(期)：2024.44(4)
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