摘要
在超细陶瓷涂料中分别添加了不同含量的纳米金属镍粉,采用流涂方法在GH202镍基合金表面制备了含纳米镍粉的超细陶瓷涂层。用扫描电镜及透射电镜观察和分析了纳米金属/超细陶瓷涂料中纳米颗粒的尺寸和微观形貌以及在涂层中的分布情况;通过摩擦实验评价了涂层的耐磨损性能。结果表明:涂层中的纳米颗粒趋于靠近涂层/基体界面处分布;在900℃保温2 h过程中,涂层中纳米颗粒没有明显的长大;添加纳米金属镍粉可以明显提高涂层的耐磨损性能,随纳米镍粉含量的增加,涂层的耐磨损性能提高。
In order to improve the wear resistance and high temperature oxidation resistance of nickel alloys,the high temperature ultra-fine ceramic coating containing nano-size nickel particles was obtained by flow coat method on the nickel alloy GH202.The affection of nano-size nickel particles on the tribological properties of the coating was investigated through wear resistance test.The morphology of the specimens was examined by transmission electron microscope（TEM）and scanning electron microscopy（SEM）.The results show that the nano-Ni particles tend to distribute along the interface of the coating and substrate in the coating,and the nano-nickel particles has not grown up apparently during heated at 900 ℃ for 2 h.And the wear resistance properties of the coating can be effectively improved by adding nano-size nickel particles,and the coating containing 10%（mass fraction）nano-size nickel shows the optimizes property.
出处
《金属材料与冶金工程》
CAS
2007年第3期6-8,共3页
Metal Materials and Metallurgy Engineering
关键词
纳米镍粉
陶瓷涂层
摩擦性能
界面
nano-nickel particles
ceramic coating
tribological property
interface
