激光技术2024，Vol.48Issue(4)：542-548,7.DOI:10.7510/jgjs.issn.1001-3806.2024.04.012
添加CeO2对激光熔覆Ni基/WC复合涂层的影响
Effect of CeO2 addition on laser cladding Ni-based/WC composite coatings
摘要
Abstract
In order to improve the corrosion resistance of Q235 steel in seawater and to prolong its service life in marine environment,Ni-based/WC composite cladding layer with different mass fraction CeO2 was prepared on Q235 steel by laser cladding technology.The microstructure,microhardness,and electrochemical corrosion properties in NaCl solution(mass fraction of 3.5％)of the coatings were characterized by using scanning electron microscopy,energy dispersive spectroscopy,X-ray diffraction,microhardness tester,and electrochemical workstation,respectively.The results show that the addition of an appropriate amount of CeO2 promoted grain refinement and a uniform distribution of the microstructure,thereby enhancing the hardness and corrosion resistance of the coatings in NaCl solution.When the mass fraction of CeO2 adds reached 1％,the coating exhibites the highest average hardness and the best resistance to seawater corrosion.This study provides a theoretical reference for subsequent laser cladding preparation of coatings resistant to seawater corrosion.关键词
激光技术/复合涂层/激光熔覆/氧化铈/电化学腐蚀Key words
laser technique/composite coating/laser cladding/CeO2/electrochemical corrosion分类
信息技术与安全科学引用本文复制引用
梁飞龙,李凯玥,师文庆,朱志凯,何启浪..添加CeO2对激光熔覆Ni基/WC复合涂层的影响[J].激光技术,2024,48(4):542-548,7.基金项目
国家自然科学基金资助项目(62073089) （62073089）
广东省教育厅普通高校重点领域专项资金资助项目(2020ZDZX2061) （2020ZDZX2061）
