Tribological behavior of Ni3Al matrix self-lubricating composites containing WS2, Ag and hBN tested from room temperature to 800°C
Tribological behavior of Ni3Al matrix self-lubricating composites containing WS2, Ag and hBN tested from room temperature to 800°C
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DOI：
10.1016/j.matdes.2013.09.051
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发表时间：
2014-03
影响因子：
8.4
通讯作者：
Xiaoliang Shi;Siyuan Song;Wenzheng Zhai;Mang Wang;Zengshi Xu;Jie Yao;A. Din;Qiao-xin Zhang
中科院分区：
文献类型：
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作者：
Xiaoliang Shi;Siyuan Song;Wenzheng Zhai;Mang Wang;Zengshi Xu;Jie Yao;A. Din;Qiao-xin Zhang
采用放电等离子烧结原位合成技术制备了不同WS 2、Ag和hBN（WAh）质量比为1：1：1的Ni 3Al基自润滑复合材料（NMSC）。在载荷为10 N、滑动速度为0.234 m/s、摩擦时间为80 min的条件下，研究了NMSC与商业Si 3 N4陶瓷球在室温至800 °C范围内的摩擦磨损性能。结果表明，纳米微晶纤维素的摩擦学性能与WAh的添加量密切相关。此外，具有15 wt.% WAh和5重量%从室温到800 °C，TiC表现出相对较低的摩擦系数和较小的磨损率。添加15 wt.%的NMSC具有优异的摩擦学性能， WAh和5重量% TiC的形成是由于WAh复合润滑剂与TiC增强相的协同作用。
Ni3Al matrix self-lubricating composites (NMSC) containing varied amounts of WS2, Ag and hBN (WAh) with weight ratio of 1:1:1 were fabricated by in situ technique using spark plasma sintering. The friction and wear properties of NMSC against the commercial Si3N4ceramic ball at the load of 10 N and sliding speed of 0.234 m/s for 80 min from room temperature to 800 °C were investigated. The results showed that the tribological properties of NMSC strongly depended on the addition content of WAh. Moreover, NMSC with 15 wt.% WAh and 5 wt.% TiC exhibited the relatively lower friction coefficients and the less wear rates from RT to 800 °C. The excellent tribological behavior of NMSC with 15 wt.% WAh and 5 wt.% TiC was attributed to the synergetic action of composite lubricants of WAh and reinforced phase of TiC.