WC-10%Co激光熔覆涂层的制备及耐磨性能  

Preparation and Wear-resistance of WC-10%Co Laser Cladded Layer

作　　者：朱流[1] 郦剑[2] 

机构地区：[1]台州学院机电与建筑工程学院,浙江台州318000 [2]浙江大学材料与化学工程学院,浙江杭州310027

出　　处：《机械工程材料》2008年第8期26-29,共4页Materials For Mechanical Engineering

基　　金：浙江省科技计划资助项目(2008C31040);国家高技术研究发展计划资助项目(2002AA332100)

摘　　要：为了提高WC-Co激光熔覆涂层的性能,采用化学镀法制备了WC-10%Co复合粉体,分别用体视显微镜和扫描电镜对WC-Co激光熔覆涂层的表面和截面形貌进行观察,探讨了激光熔覆工艺参数对涂层显微组织的影响,并进行了磨损性能试验。结果表明:当激光功率在2.0(或2.4)kW,扫描速率为4.1(或8.2)m.min-1,光斑直径为3 mm时,WC-10%Co涂层与基体能形成冶金结合;涂层的耐磨性能得到明显提高。WC-10%Co composite powders were prepared by electroless plating to improve the properties of the WC-Co laser cladded layer.The stereoscopic microscope(SM) and scanning electron microscopye(SEM) were used to study the morphology of the WC-10%Co layers cladded by different laser cladding process parameters.The effects of laser cladding processing parameters on the microstructure and properties of the laser cladded layer were discussed.The results show that the metallurgical bonding formed between the WC-10%Co...

关 键 词：WC-CO涂层 激光熔覆 化学镀 

分 类 号：TG174.44[金属学及工艺—金属表面处理]