石墨类型对镍基自润滑材料性能的影响  

Effects of Graphite Types on Properties of Nickel-Based Self-Lubricating Materials

作　　者：马越[1,2,3] 万磊 刘璇[1,2,3] 刘丽斌 张永乾 MA Yue;WAN Lei;LIU Xuan;LIU Libin;ZHANG Yongqian(Luoyang Bearing Research Institute Co., Ltd., Luoyang 471039, China;Henan Key Laboratory of High Performance Bearing Technology, Luoyang 471039, China;China International Science and Technology Cooperation Base for Digitization Design of High Performance Bearing, Luoyang 471039,China)

机构地区：[1]洛阳轴承研究所有限公司,河南洛阳471039 [2]河南省高性能轴承技术重点实验室,河南洛阳471039 [3]高性能轴承数字化设计国家国际科技合作基地,河南洛阳471039

出　　处：《轴承》2020年第7期36-39,共4页Bearing

摘　　要：以Ni-Cu合金为基体,添加相同石墨含量的镍包石墨、胶体石墨、鳞片石墨和碳纤维,采用复压复烧工艺制备镍基自润滑复合材料,对复合材料的力学性能及摩擦学性能进行检测,并观察其显微结构和磨损形貌。结果表明:相同配比下,含鳞片石墨复合材料硬度为54 HB,抗弯强度为306 MPa,冲击韧性为8.1 J/cm2,摩擦因数为0.185,磨损量为0.0294 mm3,其综合性能最好。Ni-Cu-based alloys are used as matrix,the nickel-coated graphite,colloidal graphite,flake graphite and carbon fiber are added with same graphite content,and nickel-based self-lubricating composites are prepared by repressing and resintering processes.The mechanical properties and tribological properties of composites are tested,and their microstructure and wear morphology are observed.The results show that under same ratio,the hardness,bending strength,impact toughness,friction coefficient and wear volume of flake graphite composites are 54 HB,306 MPa,8.1 J/cm2,0.185 and 0.0294 mm3 respectively,it has the best comprehensive properties.

关 键 词：滚动轴承 石墨类型 自润滑材料 镍基合金 力学性能 摩擦学性能 

分 类 号：TH133.33[机械工程—机械制造及自动化] TB333.1[一般工业技术—材料科学与工程]