氩弧熔敷原位自生TiC/Ni60A复合涂层的滑动磨损特性  

Sliding wear behaviors of in-situ synthesis TiC/Ni60A composite coatings by argon arc cladding

作　　者：王振廷[1] 孟君晟[1] 赵国刚[1] 

机构地区：[1]黑龙江科技学院材料科学与工程学院,哈尔滨150027

出　　处：《粉末冶金技术》2008年第3期183-186,共4页Powder Metallurgy Technology

基　　金：国家自然科学基金资助项目(50075085)

摘　　要：利用氩弧熔敷技术,以Ni60A自熔合金粉、钛粉和石墨粉为原料,在16Mn钢表面原位合成了TiC增强Ni基复合材料涂层以提高基体的耐磨性。借助扫描电镜、X射线衍射仪、显微硬度计对复合涂层的组织和性能进行了分析。结果表明:熔敷层与基体呈冶金结合,无裂纹、气孔等缺陷,TiC颗粒弥散分布于熔敷层中;复合涂层有很高的硬度,在室温干滑动磨损试验条件下具有优异的耐磨性能并随着(Ti+C)含量的增加而提高。To improve the dry wear resistance of 16Mn steel, Ni-based composite coating reinforced by TiC particle was prepared on the surface of 16Mn steel by means of argon arc cladding technique with the pre-alloyed powder of Ni60A.Ti and C. The microstructure and properties of the coating were investigated by scanning electron microscope, X-ray diffractometer and microhardness tester. The results indicate that the coating has excellent bonding between the coating and the 16Mn steel substrate and the coating is uniform, continuous and almost defectfree and the particle are dispersively distributed in the cladded coating. The argon arc clad composite coating has high hardness and excellent wear resistance under dry sliding wear test conditions. Furthermore, with the increase of （Ti ＋ C） content in the argon arc clad coating, the resistance wear increase.

关 键 词：氩弧熔敷 原位自生 TIC颗粒 复合材料 耐磨性 

分 类 号：TG146.15[一般工业技术—材料科学与工程] TB331[金属学及工艺—金属材料]