45钢表面激光熔覆Ni60-TiC陶瓷涂层的耐磨耐蚀性能  

Wear and Corrosion Resistance of Laser Cladding Ni60-TiC Ceramic Coating on 45 Steel Surface

作　　者：曹金龙 杨学锋[1] 王守仁[1] 张辉[1] 杨丽颖[1] 乔阳[1] 李陈晨 Cao Jinlong;Yang Xuefeng;Wang Shouren;Zhang Hui;Yang Liying;Qiao Yang;Li Chenchen(University of Jinan,Jinan 250022,China)

机构地区：[1]济南大学,山东济南250022

出　　处：《稀有金属材料与工程》2020年第2期611-617,共7页Rare Metal Materials and Engineering

基　　金：国家自然科学基金(51575234,51872122);中国博士后科学基金(2017M620286);山东省重点研发计划(2018CXGC0809);山东省农机装备研发创新计划(2018YF012);山东省泰山学者特聘专家。

摘　　要：柱塞抽油泵柱塞(45钢)长期工作在高摩擦、高腐蚀环境下,需要改善其工作表面的耐磨性及耐蚀性以提高其工作效率、延长使用寿命。采用激光熔覆技术在45钢表面熔覆Ni60-TiC混合粉末制备金属陶瓷涂层,对熔覆不同TiC含量(0%、10%、20%、30%,质量分数,下同)的涂层进行显微硬度测试、摩擦磨损试验及耐腐蚀试验,同时对涂层微观形貌进行表征。结果表明:涂层中加入TiC能有效改善涂层的耐磨耐蚀性能,提高涂层的硬度,降低摩擦系数。综合考虑柱塞抽油泵柱塞实际工作环境,涂层中TiC含量为20%-30%时涂层的耐磨性耐腐蚀性最好。The plunger pump plunger(45 steel) works in a high friction and strong corrosion environment for a long time,and it is necessary to improve the wear resistance and corrosion resistance of its working surface to increase its working efficiency and prolong its service life.The cermet coating was prepared by cladding the Ni60-TiC mixed powder on the surface of 45 steel by laser cladding technology,and the coatings with different TiC contents(Owt%,10 wt%,20 wt%,30 wt%) were subjected to micro hardness test and friction and wear test,corrosion resistance test,and the surface morphology of the coating was also characterized.The results show that the addition of TiC to the coating can effectively improve the wear resistance and corrosion resistance of the coating,increase the hardness of the coating and reduce the friction coefficient.Considering the actual working environment of the plunger pump plunger,the wear resistance and corrosion resistance of the coating are the best when the TiC content in the coating is 20 wt%~30 wt%.

关 键 词：激光熔覆 涂层 摩擦磨损 耐腐蚀性 

分 类 号：TQ174.758.16[化学工程—陶瓷工业]