摘要
采用激光熔覆技术在Q960钢板表面熔覆Stelllite6耐腐蚀涂层,为提高涂层的耐磨性能,分别向涂层中加入质量分数为15%、20%、30%、35%和40%的WC粉末。并采用金相显微镜、XRD、显微维氏硬度计和电化学工作站对复合涂层的微观组织形貌、物相、显微硬度和电化学性能进行测试分析。研究结果表明:随WC含量增加,复合涂层生成钴碳复杂相,并出现少量气孔和裂纹,涂层耐磨性能明显提高,与之相反,复合涂层的耐腐蚀性能不断恶化。综合分析涂层的耐磨和耐腐蚀性能,加入30%WC的涂层综合性能最佳。
In this paper,the Stelllite6 corrosion-resistant coating was prepared on the surface of Q960 steel plate by laser cladding technology.To improve the wear resistance of the coating,the WC powder with mass fractions of 15%,20%,30%,35% and 40% was added to the coating,respectively.The coating’s microstructure and phase were analyzed by Metallographic microscopy and X-Ray Diffraction(XRD).The stellite6/WC coating’s microhardness and electrochemical property were tested by microvickers hardness tester and electrochemical workstation.The results show that,with the increase of WC content,the complex phase of cobalt carbon is formed in the composite coating,and a few pores and cracks appear.The wear resistance of the composite coating is improved obviously and the corrosion resistance of the composite coating is getting worse.Comprehensive analysis of corrosion resistance and wear resistance,the stellite6 coating with 30% WC has the best comprehensive performance.
作者
张田力
张大兵
阳建君
彭英彪
ZHANG TianLi;ZHANG DaBing;YANG JianJun;PENG YingBiao(School of Mechanical Engineering,Xiantan University,Xiangtan 411105,China;School of Metallurgy and Material Engineering,Hunan University of Technology,Zhuzhou 412007,China)
出处
《机械强度》
CAS
CSCD
北大核心
2020年第5期1081-1087,共7页
Journal of Mechanical Strength
基金
湖南省自然科学基金项目(2019JJ60068)
湖南省科技计划项目(S2014F1023)
株洲市科技计划项目(2019-026)资助。
