石墨烯对氩弧熔覆镍基涂层组织与性能的影响  

Effect on microstructure and properties of Ni based coating by argon arc cladding with graphene

作　　者：王磊 Wang Lei(School of Materials Science&Engineering,Heilongjiang University of Science&Technology,Harbin 150022,China)

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》2022年第6期759-764,共6页Journal of Heilongjiang University of Science And Technology

基　　金：黑龙江省省属高等学校基本科研业务费科研项目(2020-KYYWF-0697)。

摘　　要：为揭示添加石墨烯对TiC增强相涂层的作用以及增强相强化机制和磨损作用机理,利用氩弧熔覆技术在45号钢表面制备出TiC金属间化合物涂层,通过光学显微镜、X射线衍射仪、显微硬度计、万能摩擦磨损试验机分析熔覆试样的宏观形貌、显微组织、显微硬度、耐磨性能。结果表明,添加石墨烯的熔覆层比不添加墨烯的涂层硬度和耐磨性都要好;且随着石墨烯含量的增加,熔覆层的硬度呈现出先升高后降低的现象,耐磨性也先升高后降低;并且石墨烯含量在0.6%时熔覆层的硬度最好,达到了5.26 GPa,石墨烯含量也在0.6%时,磨损量也最低。This paper aims to reveal the effect of graphene addition on TiC enhanced phase coating as well as the mechanism of enhanced phase strengthening and wear action.The study involves preparing TiC intermetallic compound coating on the surface of 45 steel using argon arc fusion coating technique;analyzing the macroscopic morphology,microtissue,microhardness and wear resistance of the coated test samples by optical microscope,X-ray diffractor,microhardness meter,universal friction and wear test machine.The experimental results show that the cladding layer with graphene has better hardness and wear resistant than the coating without graphene;along with the increase of graphene content,the hardness of the cladding layer increases first and then decreases,and the wear resistance also increases first and then decreases;when the graphene content is 0.6%,the hardness of the cladding layer presents the best effect,reaching 5.26 GPa,and the lowest wear amount with graphene contentt at 0.6%.

关 键 词：氩弧熔覆 石墨烯 显微组织 耐磨性 

分 类 号：TG455[金属学及工艺—焊接]