摘要
研究了一种真空熔结镍基合金涂层的组织结构及其干摩擦滑动磨损特性。结果表明,镍基合金涂层中的析出相主要有硼化物、碳化物和硅化物,其中硼化物、碳化物起强化作用,硅化物改善涂层熔结过程中的工艺性能。涂层磨损的主要方式是微犁削,因镍基合金涂层具有较高的高温硬度,高温下具有良好的抗磨性能。磨损过程中在磨损表面覆盖的氧化物层对涂层起到保护和减磨作用。
Microstructure and high temperature wear characteristics of a vacuum melting Ni base alloy coating have been studied The results indicate that the main separating phases include borides, carbides and silicides, of which the borides and carbides are dispersion strengthening phases while the silicides mainly improve technological properties of the vacuum melting process The main mode of wear is micro plowing and because of comparatively high hardness at high temperature, the Ni base alloy coating has better wear resistant properties than 3Cr2W8V steel which becomes drastically softening as the temperature is beyond 500℃ During wear process oxide layer formed and covered the wear surface, which protected the wear surface and decrease the wear
出处
《材料工程》
EI
CAS
CSCD
北大核心
2000年第1期7-12,共6页
Journal of Materials Engineering
基金
航空基金
关键词
真空熔结
镍基合金涂层
组织结构
高温磨损特性
vacuum melting
Ni base alloy coating
microstructure
high temperature wear characterristics
