摘要
为探讨含沙油润滑条件下材料的磨损问题，采用超音速等离子喷涂技术在45铜表面制备了12Co—WC涂层，使用T-11球-盘式摩擦磨损试验机考察了涂层在含沙油润滑条件下的摩擦磨损性能。结果表明，超音速等离子喷涂12Co—WC涂层具有致密的组织、高的强度和硬度，在含沙油润滑条件下的摩擦系数略低于灰铸铁，耐磨性比灰铸铁提高4～8倍，同时磨损体积对沙粒尺寸和沙粒含量的变化不敏感。超音速等离子喷涂12Co—WC涂层的失效以磨粒磨损及WC颗粒和喷涂粒子剥落为主。
In order to solve the problem of the wear in sand containing oil lubrication, the 12Co- WC coating was prepared by supersonic plasma spray. Tribological properties of the coating were investigated in a T - 11 ball - on - disk wear tester. The results showed that the coating was characterized by compact construction, high bond strength and microhardness. The wear resistance of the coating was 4-8 times higher than that of the grey casting iron, while the friction coefficient was lower than that of the grey casting iron. The main failure mechanisms of the coating were abrasive wear and stripping of the WC grain and sprayed particles.
出处
《材料保护》
CAS
CSCD
北大核心
2007年第10期65-67,共3页
Materials Protection
