氩弧熔覆-注射技术制备的纳米WC涂层及组织与耐磨性能  

Microstructure and wear resistance of argon arc cladding-injection technology for preparation of nanometer WC coating

作　　者：王振廷[1] 胡磊[1] 孟君晟[1] 史小平[1] 梁刚[1] 

机构地区：[1]黑龙江科技大学材料科学与工程学院,哈尔滨150022

出　　处：《黑龙江科技大学学报》2015年第4期353-356,共4页Journal of Heilongjiang University of Science And Technology

基　　金：黑龙江省教育厅科学技术研究项目(12541705)

摘　　要：为提高材料表面的耐磨性能,利用氩弧熔覆-注射技术,在45#钢表面注入纳米WC和Ni60 A的混合粉料,制备出纳米结构涂层,利用扫描电镜观察纳米涂层的显微形貌,采用X射线衍射仪对涂层物相进行分析,测定涂层截面的显微硬度,由MMS-2B型摩擦磨损实验机完成磨损性能测试。结果表明:涂层与基体为冶金结合,纳米WC弥散分布在涂层中;涂层的显微硬度最高可达1 677.4 MPa,耐磨性能较基体提高近50倍。In order to improve the wear resistance of the surface of the material, the nano structure coating was prepared on the surface of 45 steel by injecting WC and Ni60A into the molten bath of the steel. Nano coating morphology was examined by scanning electron microscope （SEM）. The coating pha- ses were analyzed by X-ray diffraction. The micro hardness and wear performance of the coating section were determinated by micro hardness tester and MMS-2B friction wear experimental machine, respective- ly. The results show that the coating and substrate are metallurgical bonding, the nano WC distributes u- niformly in the coating, the micro hardness of the coating is up to 1 677.4 MPa, and the wear resistance is increased by nearly 50 times compared with the matrix.

关 键 词：纳米WC涂层 氩弧熔覆-注射 耐磨性 

分 类 号：TG174[金属学及工艺—金属表面处理]