陆龙,杨贵荣,苏霄鹏,张文辉,王静波

• 1:兰州工业研究院
• 2:兰州理工大学省部共建有色金属先进加工与再利用国家重点实验室
• 3:兰州文理学院化工学院
• 4:中国科学院兰州化学物理研究所固体润滑国家重点实验室

摘要(Abstract)：

采用放电等离子烧结技术制备了Ni-Mo-Y-Gr(石墨烯)自润滑复合材料，通过光学显微镜、扫描电镜、X射线衍射、拉曼及高温摩擦实验机对复合材料的微观组织、成分、力学性能及摩擦磨损性能进行了研究。结果表明：Ni-Mo-Y-Gr复合材料的组织均匀致密，随着石墨烯含量的增加，复合材料的密度、硬度及屈服强度呈下降趋势，实际密度大于计算理论密度，即复合材料制备过程中发生了冶金熔合与固溶；Ni-Mo-Y-Gr复合材料在室温至600℃范围内具有较低的摩擦系数及磨损率，表明其具有较好的摩擦学性能；在室温、200和400℃时石墨烯起到了良好的润滑作用，在600℃时的主要润滑相为石墨烯、NiO、MoO_2、MoO_3和NiMoO_4;在800℃时形成NiMoO_4及镍钼的氧化物，难以形成完整、有效的润滑层，从而使复合材料的摩擦学性能有所下降。

关键词(KeyWords)： Ni-Mo-Gr复合材料;粉末冶金;微观结构;摩擦学性能

Abstract:

Keywords:

基金项目(Foundation): 兰州市科技计划项目(2019-1-17);; 国家级“大学生创新创业训练计划”项目(202111562007)

作者(Author): 陆龙,杨贵荣,苏霄鹏,张文辉,王静波

DOI: 10.13289/j.issn.1009-6264.2023-0325

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