氧化铝粒度对原位转化碳纤维增韧氧化铝陶瓷烧结温度及性能的影响  

Effect of Alumina Powder Size on Sinter Temperature and Properties of Alumina Ceramic Reinforced by in Situ Transformed Carbon Fiber

作　　者：任杰[1] 陈华辉[1] 杜飞[1] 赵赋[1] 翟羽佳[1] 苏伟明[1] 

机构地区：[1]中国矿业大学(北京)机电与信息工程学院

出　　处：《航空制造技术》2013年第23期75-79,共5页Aeronautical Manufacturing Technology

基　　金：国家自然科学基金项目(51275516)资助

摘　　要：在原试验基础上,采用更细氧化铝粉末以期进一步提高原位转化碳纤维增韧氧化铝陶瓷复合材料的韧性。探究了2000目氧化铝粉末的最佳烧结温度,研究对比了1000目与2000目氧化铝粉作为基体材料的复合材料的致密度、硬度、断裂韧性和滑动磨损性能。研究结果表明:采用2000目氧化铝粉末烧结的较佳最高烧结温度为1550℃,较1000目氧化铝粉末的烧结温度降低,且复合材料的晶粒较1000目氧化铝复合材料减小。采用2000目氧化铝粉末烧结的复合材料致密度、硬度、断裂韧性和滑动磨损性能均有所提高。Based on previous researches, in this experiment smaller alumina power is adopted in order to promote the toughness of alumina ceramic reinforced by in situ transtbrmed carbon fiber. Because the alumina size decreases, so in the experiment, the highest sinter tempera- ture for 2000 mesh alumina is studied, then a comparison between 1000 mesh alumina matrix composites and 2000 mesh alumina matrix composites is conducted in the aspect of density, hardness and wear behaviors. The results dem- onstrate that the suitable highest sintering tempe,＇ature is 1550℃ for 2000 mesh alumina, and the sintering tempera- ture is lower and the grain size is smaller than 1000 mesh alumina composites. By comparing the density, hardness, fracture toughness and slid wear behavior, it finds that these properties of 2000 mesh alumina matrix composites are all better than the 1000mesh alumina matrix compos- ites.

关 键 词：原位转化 碳纤维 粒度 氧化铝陶瓷 

分 类 号：TQ174.1[化学工程—陶瓷工业]