多相复合陶瓷刀具材料的设计与制备

Design and Fabrication of Multiphase Composite Ceramic Tool Materials

陶瓷材料的多相复合与计算机辅助设计是 2 1世纪先进陶瓷材料的重要发展趋势。文章采用理论与实验相结合的方法 ,建立了多相复合陶瓷刀具材料力学性能与材料组分之间关系的数学模型 ,采用计算机辅助优化设计技术求得材料的最优组分。在此基础上 ,利用热压技术制得一种Al2 O3-SiC - (W ,Ti)C多相复合陶瓷刀具材料 。

The multiphase composite and the computer aided design of the ceramics are two significant trends in the development of the advanced ceramic materials in the 21st century. Mathematical models have been built for the description of the relationships between the mechanical properties and the material compositions of the multiphase composite ceramic tool material with the combination of both theoretical and experimental methods. The optimum compositions of the material have also been achieved by means of the computer aided optimization technology. Then, an advanced Al 2O 3-SiC-(W,Ti)C multiphase composite ceramic cutting tool material is fabricated with hot pressing technology. The material is found to possess high comprehensive mechanical properties, which proves that the method proposed in the present study is reasonable and feasible for the design of multiphase composite ceramic tool materials.