摘要
在45钢上通过等离子熔覆制备了WC-TiC-Ni涂层,对其物相、显微硬度和滑动摩擦磨损行为进行了分析。结果表明:熔覆层与基体材料之间为冶金结合,熔覆层表面无裂纹和气孔。TiWC_(2)的形成使得熔覆层的显微硬度和耐磨性得到提高。当TiC的添加量为20%(质量分数)时,涂层的平均显微硬度高达1 072.5 HV,较WC/Ni熔覆层高了128 HV,此时涂层的耐磨性最好。
A WC–TiC–Ni coating was prepared on 45 steel by plasma cladding,and its phase constitution,microhardness,and sliding wear behavior were studied.The experimental results showed that there was a metallurgical bonding between the cladding layer and the steel substrate,and there were no cracks and pores on the surface of the cladding layer.The microhardness and wear resistance of the cladding layer are improved due to the formation of TiWC_(2).When the dosage of TiC was increased to 20 wt.%,the average microhardness of the cladding layer was up to 1072.5 HV,which was 128 HV higher than a WC/Ni cladding layer.The cladding layer prepared with 20 wt.%of TiC had the best wear resistance.
作者
秦利锋
QIN Lifeng(China Railway Engineering Equipment Group Shield Manufacturing Co.,Ltd.,Zhengzhou 450000,China)
出处
《电镀与涂饰》
CAS
北大核心
2021年第20期1551-1555,共5页
Electroplating & Finishing
关键词
碳化钨
碳化钛
镍
复合涂层
等离子熔覆
物相
显微硬度
耐磨性
tungsten carbide
titanium carbide
nickel
composite coating
plasma cladding
phase constitution
microhardness
wear resistance
