WC-Cr_3C_2-Ni超音速火焰喷涂层的激光热处理  

Laser Heat Treatment of HVOF WC-Cr_3C_2-Ni Coating

作　　者：李明喜[1] 李生存[1] 修俊杰[1] 张世宏[2] 

机构地区：[1]安徽工业大学材料科学与工程学院,安徽马鞍山243002 [2]国立昌原大学纳米及先进材料学院

出　　处：《热处理》2009年第6期27-30,共4页Heat Treatment

基　　金：安徽省科技厅国际合作项目(08080703020)

摘　　要：采用光学显微镜、扫描电镜、X射线衍射物相分析和显微硬度、气孔率测定等试验手段,研究了WC-Cr_((3))C_((2))-Ni超音速火焰喷涂层在激光热处理前后的显微组织和性能。结果表明,激光热处理前后超音速火焰喷涂层中均存在WC、W_((2))C、Ni_((2))O_((3))、Cr_((3))C_((2))等相;激光热处理后涂层的组织致密,孔隙率降低,厚度减薄,显微硬度有较大幅度的提高。The microstructure and property of high velocity oxygen fuel （HVOF） sprayed WC-CrzC2-Ni coating were investigated by means of optical microscope, SEM, XRD, hardness test and measurement of porosity before and after laser heat treating. The results show that WC,W2C,Ni203 and Cr3C2 will exist in the HVOF coating before and after laser heat treating, and that the laser heat treating can make the structure become dense, the porosity reduce, the thickness decrease and the microhardness appreciably increase with regard to the coating.

关 键 词：超音速火焰喷涂 WC-Cr3 C2-Ni涂层 激光热处理 气孔率 

分 类 号：TG156.99[金属学及工艺—热处理]