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Effect of counterface balls on the friction layer of Ni3Al matrix composites with 1.5?wt% graphene nanoplatelets
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  • 作者:Qingshuai Zhu (1)
    Xiaoliang Shi (1)
    Wenzheng Zhai (1)
    Jie Yao (1)
    Ahmed Mohamed Mahmoud Ibrahim (1)
    Zengshi Xu (1)
    Siyuan Song (1)
    Abid Qamar ud Din (1)
    Long Chen (1)
    Yecheng Xiao (1)
    Qiaoxin Zhang (1)
  • 关键词:Wear mechanisms ; Solid lubrication mechanisms ; Nanotribology ; Solid lubrication film thickness
  • 刊名:Tribology Letters
  • 出版年:2014
  • 出版时间:August 2014
  • 年:2014
  • 卷:55
  • 期:2
  • 页码:343-352
  • 全文大小:3,969 KB
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  • 作者单位:Qingshuai Zhu (1)
    Xiaoliang Shi (1)
    Wenzheng Zhai (1)
    Jie Yao (1)
    Ahmed Mohamed Mahmoud Ibrahim (1)
    Zengshi Xu (1)
    Siyuan Song (1)
    Abid Qamar ud Din (1)
    Long Chen (1)
    Yecheng Xiao (1)
    Qiaoxin Zhang (1)

    1. School of Mechanical and Electronic Engineering, Wuhan University of Technology, 122 Luoshi Road, Wuhan, 430070, China
  • ISSN:1573-2711
文摘
Research on the friction layer is needed to minimize friction- and wear-related mechanical failures in moving mechanical assemblies. Dry sliding tribological tests of Ni3Al matrix composites (NMCs) with 1.5?wt% graphene nanoplatelets (GNPs) sliding against different counterface balls are undertaken at the condition of 10?N-.234?m?s? in this study. When sliding against GCr15 steel, a uniform and thick friction layer is formed, resulting in a lower friction coefficient (0.29-.31) and wear rate (2.0-.1?×?10??mm3?N??m?). While sliding against Al2O3 and Si3N4, the formation and stability of the friction layers are restricted in the severe wear regime, and the NMCs exhibit higher friction coefficients and wear rates. Therefore, various counterface balls have a great effect on the stability and thickness of the friction layer, thus affecting the tribology performance of NMCs. The result also shows that GNPs exhibit enrichment and self-organized microstructures in the friction layer. In addition, the friction layer is also found to be divided into two layers, protecting the subsurface from further damage and reducing shear.

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