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Tribological behavior of a TiAl matrix composite containing 10 wt% Ag investigated at four wear stages

机译：含有10wt％Ag的Tial基质复合材料的摩擦学行为在四个磨损阶段研究

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摘要

The useful longevity of mechanical components, such as gears and sliding bearings, were related with their tribological behaviors. The tribological behavior of a TiAl matrix composite containing 10 wt% Ag (TiAl-10 wt% Ag) was investigated at the four different wear stages. Wear stages, which were identified by the obtained friction coefficient and wear rate, were divided into the initial wear stage (INITIAL), fast wear stage (FAST), stable wear stage (STABLE) and severe wear stage (SEVERE). The results showed that tribological behavior at INITIAL was improved for work hardening. The friction coefficient and wear rate at FAST were small for the formation of mixed layers containing a solid lubricant Ag. Excellent tribological behavior at STABLE was attributed to the existence of lubricant films containing massive amounts of solid lubricant Ag. Poor tribological behavior of TiAl-10 wt% Ag at SEVERE was obtained for the lubricant film destroyed by the propagation of fatigue cracks. It was found that TiAl-10 wt% Ag, because of the excellent tribological behavior at STABLE, could be chosen as a promising structural material for mechanical components.
机译：机械部件（例如齿轮和滑动轴承）的有用寿命与其摩擦学行为有关。在四个不同的磨损阶段研究​​了含有10wt％Ag（TiAl-10wt％Ag）的Tial基质复合材料的摩擦学行为。通过所获得的摩擦系数和磨损率鉴定的磨损阶段分为初始磨损阶段（初始），快速磨损阶段（快速），稳定磨损阶段（稳定）和严重磨损阶段（严重）。结果表明，初始的摩擦学行为得到改善，适用于工作硬化。对于含有固体润滑剂Ag的混合层的形成，快速的摩擦系数和磨损率很小。稳定的优异摩擦学行为归因于含有大量固体润滑剂Ag的润滑膜的存在。通过疲劳裂缝繁殖破坏的润滑剂膜，获得TiAl-10wt％Ag的差的TiA1-10wt％Ag的差的摩擦学行为。发现TiAl-10wt％Ag，因为稳定的摩擦性培训行为，可以选择作为机械部件的有希望的结构材料。

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  • 来源
    《RSC Advances》 |2015年第95期|共12页
  • 作者

    Yang Kang; Shi Xiaoliang; Zheng Da; Zhai Wenzheng; Ibrahima Ahmed Mohamed Mahmoud; Wang Zhihai;

  • 作者单位

    Wuhan Univ Technol Sch Mech &

    Elect Engn Wuhan 430070 Peoples R China;

    Wuhan Univ Technol Sch Mech &

    Elect Engn Wuhan 430070 Peoples R China;

    Shanghai Jiao Tong Univ Sch Mech Engn Shanghai 200030 Peoples R China;

    Wuhan Univ Technol Sch Mech &

    Elect Engn Wuhan 430070 Peoples R China;

    Wuhan Univ Technol Sch Mech &

    Elect Engn Wuhan 430070 Peoples R China;

    Wuhan Univ Technol Sch Mech &

    Elect Engn Wuhan 430070 Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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