等离子喷涂WC颗粒增强Ni基涂层组织及抗冲蚀性能  

Microstructure and Erosion Resistance of WC Particles Reinforced Ni-based Plasma-sprayed Coating

作　　者：王东生[1,2] 田宗军[2] 王松林[1] 黄因慧[2] 

机构地区：[1]铜陵学院机械工程系,安徽铜陵244000 [2]南京航空航天大学机电学院,江苏南京210016

出　　处：《热加工工艺》2012年第4期136-139,共4页Hot Working Technology

基　　金：国家自然科学基金(21171131,51105204);江苏省博士后科研资助计划项目(1102052C);江苏省自然科学基金(BK2004005,BK2009375);安徽省自然科学基金(12040606Q);安徽省高等学校省级自然科学研究项目(KJ2011B185);安徽省高等学校省级优秀青年人才基金项目(2012SQRL)

摘　　要：采用等离子喷涂工艺制备WC颗粒增强Ni基涂层,分析了涂层的显微组织,并对其抗冲蚀磨损性能进行了测试。结果表明,涂层呈层片状结构,有一定孔隙,WC颗粒在涂层中分布均匀,且与母相结合良好。随着冲蚀角度的增大,涂层冲蚀磨损质量损失先增大后减小,表现为塑性-脆性复合冲蚀磨损特征。The tungsten carbide（WC） particles reinforced Ni-based coating were fabricated by plasma spraying.The microstructure of the coating was investigated,and the erosion wear resistance of the coating was tested.The results show that the coating has typical lamellar stacking microstructure and contains some pores.The reinforced WC particles have an uniform distribution in the coating,and have a good combination with the base metal.The cumulative eroded mass loss curves of the coating increases at first and then decreases with the increase of impingement angle.And the coating shows a plastic-brittle composite erosion mechanism.

关 键 词：等离子喷涂 镍基合金涂层 WC颗粒 涂层组织 抗冲蚀磨损性能 

分 类 号：TG174.44[金属学及工艺—金属表面处理]