摘要
研究了Y_2O_3对40Cr钢表面激光熔覆镍基合金层显微组织、相结构以及性能的影响。结果表明,加入Y_2O_3的镍基激光熔覆层显微组织细小、均匀,且不出现微裂纹。熔覆层形成的物相有γ-(Fe,Ni)、Cr_(23)C_6、Cr_2B、Fe_2Be相等。与纯镍基熔覆层相比,加入Y_2O_3的镍基熔覆层显微硬度、耐磨性和耐蚀性均有较大程度提高。
The effects Y2O3 on the microstructure, phase composition and properties of N;-based laser cladding coating were investigated. The results indicate that the microstructure becomes finer and symmetrical, and has not crack by adding Y2O3.There are γ（Fe, Ni）,Cr23 C6 .Cr2 B, Fe2 B phases in the coatings. The microhardness, wear resistance and corrosion rate of Nibased cladding coating by adding Y2O3 improves greater comparing with not adding Y2O3.
出处
《应用激光》
CSCD
北大核心
2009年第5期402-404,407,共4页
Applied Laser
基金
江西省科技项目(项目编号:200520200809)
关键词
Y2O3
镍基熔覆层
显微硬度
耐磨性
耐蚀性
Y2O3
Ni-based cladding coating
microhardness
wear resistance
corrosion rate
