摘要
目的研究WC-10Co4Cr涂层的耐滑动磨损性能及机理。方法在0Cr13Ni5Mo不锈钢基体上,采用超音速火焰喷涂(HVOF)制备了WC-10Co4Cr金属陶瓷涂层。分析了WC-10Co4Cr涂层的物相组成、显微组织,并测试了其硬度、结合强度、孔隙率及在560 r/min和1120 r/min转速下的滑动磨损性能。结果涂层的显微硬度为1325HV0.2,结合强度为72 MPa。涂层组织致密,孔隙率为0.76%。在560 r/min下磨损10h,涂层与基体的磨损失重比为1:138.36;在1120 r/min下磨损10 h,涂层与基体的磨损失重比为1:127.44。结论在滑动摩擦磨损的初期,涂层的磨损失效机制主要表现为磨粒磨损。随着滑动速度的增大,涂层的磨损失效机制主要表现为疲劳磨损。
The work aims to study sliding wear resistance and wear mechanism of WC-10Co4Cr coating.WC-10Co4Cr metal ceramic coating was prepared on 0Cr13Ni5 Mo stainless steel by using HVOF.Phase composition and microstructure of the coating were characterized.The micro-hardness,bond strength,porosity,sliding wear at 560 r/min and 1120 r/min were tested.Average micro-hardness was 1325Hv0.2,bond strength 72 MPa,porosity 0.76%,weight loss ratio 1：138.36 after continuous wear for 10 h at 560 r/min,1：127.44 after continuous wear for 10 h at 1120 r/min.At the beginning of sliding wear,wear failure mechanism of the coating is mainly present as abrasive wear.With the increase of sliding velocity,the wear failure mechanism is mainly present as fatigue wear.
出处
《表面技术》
EI
CAS
CSCD
北大核心
2017年第3期119-123,共5页
Surface Technology
基金
浙江省科技计划项目(2014C31156)
浙江省科学计划项目(2013C31044)~~
