摘要
利用等离子熔覆技术以石墨烯、C粉、Ti粉、Ni60A粉为原料在35CrMnSi钢基材表面原位合成复合涂层,应用SEM,XRD对涂层的微观组织和物相进行分析,并测试了涂层的显微硬度。结果表明:复合涂层与基体界面无气孔、无裂纹,呈冶金结合;复合涂层组织由TiC,γ-Ni和Cr 23 C 6组成。石墨烯的加入,使复合涂层的组织得到细化,而显微硬度也发生明显变化。3%石墨烯的复合涂层组织最细,接近等轴晶,颗粒密度最大,涂层的显微硬度达到HV 690。石墨烯的加入提高了复合涂层的性能。
Using the plasma cladding technology,graphene,C powder,Ti powder and Ni60A powder were used as raw materials to synthesize the composite coating on the surface of 35CrMnSi steel substrate.The microstructure and phase of the coating were analyzed by SEM and XRD.The microhardness of the coating was tested.The results showed that the interface between the composite coating and the substrate was free of pores and cracks,and it was metallurgical,the composite coating consists of TiC,γ-Ni and Cr 23 C 6.The addition of graphene,the microstructure of the composite coating is refined,and the microhardness is significantly increased.The composite coating of 3%graphene has the finest structure,close to equiaxed grains,and has the highest particle density,and the microhardness of the coating reaches HV 690.The addition of graphene improves the performance of the composite coating.
作者
王大力
潘庆亮
毛志成
张作凡
王永东
Wang Dali;Pan Qingliang;Mao Zhicheng;Zhang Zuofan;Wang Yongdong(School of Materials Science&Engineering,Heilongjiang University of Science&Technology,Harbin 150022,China;Guangzhou Huangchuan Ocean Engineering Co.,Ltd.,Guangzhou 511462,China)
出处
《机械制造文摘（焊接分册）》
2019年第4期24-28,共5页
Welding Digest of Machinery Manufacturing
基金
黑龙江省大学生创新计划资助项目(CL2018005)
关键词
石墨烯
等离子熔覆
镍基涂层
显微硬度
graphene
plasma arc deposition
nickel-based coating
microhardness
