Friction and Wear Behavior of Fine-grained Alumina Ceramic under Physiological Saline Conditions
来源期刊：Journal Of Wuhan University Of Technology Materials Science Edition2013年第2期
论文作者：孟范成 DONG Yabo YANG Hui ZHANG Ying ZHANG Xiaolei TIAN Zhongqing 黄伟九
文章页码：352 - 354
摘 要：Sliding friction and wear behavior of two different grain-size aluminas （average grain size = 0.6 and 2 μm） was studied in physiological saline environment. Relationship between time and wear loss was observed. The wear loss volume increased with increased sliding time and fine-grained alumina exhibits a lower value. In the initial wear-in period, grains pull-out caused by grain-boundary microcracking is the dominant wear mechanism of submicron grained alumina. In the case of alumina of large grain size, intergranular and transgranular fracture is the basic wear mechanism. As the sliding time increases, compaction of wear debris on sliding surface of fine and coarsen alumina determines the wear characteristics.
孟范成1,2，DONG Yabo1，YANG Hui1，ZHANG Ying3，ZHANG Xiaolei1，TIAN Zhongqing1，黄伟九1
1. Department of Materials, Chongqing University of Technology2. Key Laboratory of Inorganic Function Material and Device, Chinese Academy of Sciences3. Zhoushan Institutes of Calibration and Testing for Qualitative and Technical Supervision
摘 要：Sliding friction and wear behavior of two different grain-size aluminas （average grain size = 0.6 and 2 μm） was studied in physiological saline environment. Relationship between time and wear loss was observed. The wear loss volume increased with increased sliding time and fine-grained alumina exhibits a lower value. In the initial wear-in period, grains pull-out caused by grain-boundary microcracking is the dominant wear mechanism of submicron grained alumina. In the case of alumina of large grain size, intergranular and transgranular fracture is the basic wear mechanism. As the sliding time increases, compaction of wear debris on sliding surface of fine and coarsen alumina determines the wear characteristics.
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