(1. 广东工业大学 材料能源学院，广州 510081；
2. 广州有色金属研究院 表面材料中心，广州 510650)
摘 要: 利用超音速火焰喷涂技术和低压等离子喷涂技术，在铜基体上制备镍基涂层，研究涂层在室温下的摩擦磨损特性，探讨涂层的磨损机理。结果表明，HVAF制备的镍基涂层具有较好的耐磨性，主要原因是在涂层中存在Ni3B、M23C6、M7C3等硬质相，其磨损机理为磨粒磨损，而低压等离子喷涂技术制备的镍基涂层组织出现大量的非晶态，硬度低，磨损机理为磨粒磨损和疲劳磨损的综合作用，并以疲劳磨损为主。
关键字: 镍基涂层；超音速火焰喷涂；等离子喷涂；摩擦磨损
different thermal spraying technologies
（1. College of Materials and Energy, Guangdong University of Technology,
Guangzhou 510081,China;
2. Material Surface Center, Guangzhou Research Institute of Non-ferrous Metals, Guangzhou 510650, China）
Abstract:The Nickel-based coating was prepared on copper substrate by high velocity air-fuel (HVAF) thermal spraying and low pressure plasma spraying (LPPS). The wear properties and wear mechanisms of coating were studied. The results show that in the nickel-based coating deposited by HVAF, the hardness is high and the wear resistance is good. The wear mechanism is abrasive wear. The wear mechanism of Ni-based coating deposited by LPPS is mainly fatigue wear. This is attributed to low hardness and amorphous phase existed.
Key words: nickel-based coating; high velocity air-fuel; plasma spraying; friction and wear
