Ni-W合金电刷镀层的高温氧化与高温磨损特性  

Oxidation and wear behaviors of Ni-W brush plated coating at elevated temperature

作　　者：揭晓华[1] 陈元迪[1] 谢光荣[1] 胡社军[1] 卢国辉[1] 

机构地区：[1]广东工业大学材料与能源学院,广州510090

出　　处：《中国有色金属学报》2003年第4期979-983,共5页The Chinese Journal of Nonferrous Metals

基　　金：广东茂名科技基金资助项目(MM200105)

摘　　要：用电刷镀方式制备了Ni W(D)合金镀层,测试了镀层在不同温度下的氧化与滑动磨损速率,用扫描电镜观察了试样磨损表面的形貌。结果表明:Ni W(D)合金刷镀层在600℃以下具有较高的抗氧化能力,超过700℃时由于氧化膜中WO3的增加,镀层抗氧化能力下降;500℃以下时,由于镀层氧化膜的减摩作用,Ni W(D)合金刷镀层的磨损机理主要是轻微磨粒磨损;600℃以上时,镀层的磨损机理主要为镀层剥落和粘着磨损,磨损速率较大。The NiW alloy coating layer was prepared by brush plating. The oxidation and wear rate of the coating at elevated temperature were determined, the phases presence of the coating layer were examined by the Xray diffraction, and the worn surfaces were observed with a scanning electron microscope in order to analyze the coating wear mechanism. The results show that, the brush plated layer is characterized by slight oxidation below 600 ℃; above 700 ℃ the oxidation resistance decreases evidently due to the WO3 formed in the oxidation film; a relatively low wear rate is observed below 500 ℃ and the wear mechanism is scratching abrasion; while test temperature is above 600 ℃, the wear rate increases obviously, the main wear mechanisms are adhesive wear and spalling of the coating layer

关 键 词：NI-W合金 电刷镀 高温氧化 高温磨损 镀层 

分 类 号：TQ153.2[化学工程—电化学工业] TG174.82[金属学及工艺—金属表面处理]