Effect of Sliding Speed and Applied Load on Dry Sliding Tribological Performance of TiAl Matrix Self-lubricating Composites

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• 作者：Zengshi Xu (1)
  Xiaoliang Shi (1)
  Qiaoxin Zhang (1)
  Wenzheng Zhai (1)
  Xixing Li (1)
  Jie Yao (1)
  Long Chen (1)
  Qingshuai Zhu (1)
  Yecheng Xiaov (1)
  
• 关键词：Self ; lubricating composites ; Solid lubricant additives ; Solid lubrication mechanisms ; Self ; lubricated wear
• 刊名：Tribology Letters
• 出版年：2014
• 出版时间：September 2014
• 年：2014
• 卷：55
• 期：3
• 页码：393-404
• 全文大小：3,630 KB
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• 作者单位：Zengshi Xu (1)
  Xiaoliang Shi (1)
  Qiaoxin Zhang (1)
  Wenzheng Zhai (1)
  Xixing Li (1)
  Jie Yao (1)
  Long Chen (1)
  Qingshuai Zhu (1)
  Yecheng Xiaov (1)
  
  1. School of Mechanical and Electronic Engineering, Wuhan University of Technology, 122 Luoshi Road, Wuhan, 430070, China
  
• ISSN：1573-2711

文摘

More durable, low-friction self-lubricating materials in modern industry are greatly needed for tribological systems. The current paper presents the tribological performance of TiAl matrix self-lubricating composites (TSC) containing MoS2, hexagonal BN and Ti3SiC2 designated as MhT against GCr15 steel counterface under several sliding speeds from 0.2 to 0.8?m?s? and applied loads from 6 to 12?N. The results suggested that MhT played an important role in decreasing friction coefficients and wear rates. The covering percentage of transfer layers on worn surfaces varied with the changing of sliding speeds and applied loads, hence resulting in the distinct friction and wear characteristics of TSC. TSC containing 10?wt% MhT exhibited the best excellent tribological performance at 10?N-.8?m?s?, which could be due to the formation of the best compaction and largest coverage of transfer layer on the worn surfaces.