Effect of hBN content on the friction and wear characteristics of B4C-hBN ceramic composites under dry sliding condition
Effect of hBN content on the friction and wear characteristics of B4C-hBN ceramic composites under dry sliding condition
复制标题
六方氮化硼含量对B4C-六方氮化硼陶瓷复合材料干滑动摩擦磨损特性的影响
DOI：
10.1016/j.ceramint.2014.11.074
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发表时间：
2015-04-01
影响因子：
5.2
通讯作者：
Yang, Qingxia
中科院分区：
文献类型：
--
作者：
Li, Xiuqing;Gao, Yimin;Yang, Qingxia
为了研究hBN对B4 C陶瓷摩擦学性能的影响，采用销盘式摩擦磨损试验机研究了不同hBN含量的热压B4 C-hBN复合材料在空气中的干滑动摩擦磨损特性。结果表明，复合材料的摩擦磨损性能与hBN含量密切相关。获得了具有最佳摩擦学性能的hBN的最佳含量。在B4 C中加入hBN后，摩擦系数从0.586降低到0.179，这是由于在B4 C-hBN试样的磨损表面形成了H3 BO 3润滑膜。对润滑膜的形成机理进行了探讨。(C)2014 Elsevier Ltd和Techna Group S.r.l. All rights reserved.
In order to clarify the effect of hBN on the tribological properties of B4C ceramic, dry sliding friction and wear characteristics of hot pressed B4C-hBN composites containing different hBN amounts have been investigated in air environment using a pin-on-disc tribometer. Experimental results showed that the friction and wear behaviors of the composites were strongly dependent on the hBN content. An optimum content of hBN for the best tribological behaviors was obtained. The addition of hBN into B4C resulted in a significant decrease of the friction coefficient, from 0.586 for B4C against B4C to 0.179 for B4C-20 wt%hBN composite against B4C, which could be attributed to the formation of an H3BO3 lubricating film on the worn surface of the B4C-hBN specimen. The formation mechanism of the lubricating film is discussed. (C) 2014 Elsevier Ltd and Techna Group S.r.l. All rights reserved.