Preparation and performance of an advanced multiphase composite ceramic material
Preparation and performance of an advanced multiphase composite ceramic material
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DOI：
10.1016/j.jeurceramsoc.2004.04.002
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发表时间：
2005-02
影响因子：
5.7
通讯作者：
Chonghai Xu
中科院分区：
文献类型：
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作者：
Chonghai Xu
根据材料设计得到的最佳组成，SiC和15vol. %采用热压工艺制备了综合力学性能良好的含Ti（C，N）的氧化铝基复相陶瓷材料。只有在合适的热压工艺条件和材料组成下，才能获得较好的显微组织和力学性能。SiC/Ti（C，N）/Al_2O_3材料的最佳热压工艺参数为：热压温度1780 ℃，热压时间60min，热压压力35MPa。SiC和Ti（C，N）相的含量对陶瓷材料的力学性能和工程性能均有重要影响。这种陶瓷材料作为切削工具加工淬硬碳钢时具有良好的耐磨性。失效机理主要是磨粒磨损和粘着磨损。所研制的SiC/Ti（C，N）/Al2O3复相陶瓷材料将很好地应用于刀具等对耐磨性要求较高的结构件。
According to the optimum composition achieved from the material design, an advanced 15vol.% SiC and 15vol.% Ti(C,N) containing alumina-based multiphase ceramic material with good comprehensive mechanical properties has been fabricated with hot pressing technique. Only under suitable hot pressing conditions and material compositions can better microstructures and mechanical properties be achieved. The optimum hot pressing parameters for the SiC/Ti(C,N)/Al2O3material are as follows: the hot pressing temperature is 1780°C, the time duration equals to 60min and the pressure remains 35MPa. The content of each dispersed SiC and Ti(C,N) phase has significant effects not only on the mechanical properties but on the engineering performances of the ceramic materials. Good wear resistance is found for the kind of ceramic material when used as cutting tools in the machining of the hardened carbon steel. Failure mechanisms are mainly the abrasive wear and the adhesive wear. The developed SiC/Ti(C,N)/Al2O3multiphase ceramic material will be well used as the structural parts with the requirement of high wear resistance such as cutting tools.