(1. 廣東工業(yè)大學(xué) 材料能源學(xué)院，廣州 510081；
2. 廣州有色金屬研究院 表面材料中心，廣州 510650)
摘 要: 利用超音速火焰噴涂技術(shù)和低壓等離子噴涂技術(shù)，在銅基體上制備鎳基涂層，研究涂層在室溫下的摩擦磨損特性，探討涂層的磨損機(jī)理。結(jié)果表明，HVAF制備的鎳基涂層具有較好的耐磨性，主要原因是在涂層中存在Ni3B、M23C6、M7C3等硬質(zhì)相，其磨損機(jī)理為磨粒磨損，而低壓等離子噴涂技術(shù)制備的鎳基涂層組織出現(xiàn)大量的非晶態(tài)，硬度低，磨損機(jī)理為磨粒磨損和疲勞磨損的綜合作用，并以疲勞磨損為主。
關(guān)鍵字: 鎳基涂層；超音速火焰噴涂；等離子噴涂；摩擦磨損
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
