TiAl合金激光表面合金化涂层的组织与耐磨性  

Microstructures and wear resistance of laser surface alloyed composite coatings on TiAl alloy

作　　者：刘秀波[1] 于利根[1] 王华明[1] 

机构地区：[1]北京航空航天大学激光材料加工与表面工程实验室,北京 100083

出　　处：《中国有色金属学报》2000年第6期785-789,共5页The Chinese Journal of Nonferrous Metals

基　　金：美国联合技术公司 (UnitedTechnologiesCorporation) 1999年资助项目;国家自然科学基金资助项目 (59671050)

摘　　要：以NiCr WC混合粉末为原料 ,对TiAl合金进行激光表面合金化处理 ,制得了以γ NiCrAlTi镍基固溶体为基体 ,以TiC ,W2 C及M2 3C6为增强相的耐磨复合材料表面改性层。分析了改性层的组织 ,并测试了其在滑动摩擦试验条件下的耐磨性。实验结果表明 。NiCrAlTi/TiC W 2C M 23 C 6 composite coatings were fabricated on γ TiAl intermetallic alloy by laser surface alloying with NiCr WC alloy powder pre coatings. Microstructures of the composite coatings were investigated by OM, SEM, XRD and EDS and the wear resistance of the laser treated samples were evaluated under full dry sliding friction condition. The results show that the laser surface alloyed composite coatings have high hardness and good wear resistance. [

关 键 词：TIAL合金 激光表面合金化 显微组织 耐磨性 涂层 

分 类 号：TG174.445[金属学及工艺—金属表面处理] TG146.23[金属学及工艺—金属学]