三元层状碳化物Ti_3SiC_2的研究进展

On the Ternary Carbide Ti_3SiC_2

本文综合介绍Ti3SiC2 的最新研究进展。三元碳化物Ti3SiC2 属于层状六方晶体结构 ,空间群为P63 mmC ;它同时具有金属和陶瓷的优良性能 ,有良好的导电和导热能力 ,高弹性模量和低维氏显微硬度 ,在室温下可切削加工 ,在高温下能产生塑性变形 ,良好的高温热稳定性和优秀的抗氧化性能 ;应用CVD、SHS、HP HIP等方法可制备该化合物 ,用HIP方法能制备高纯、致密的Ti3SiC2 陶瓷 ;Ti3SiC2

The research progress on the ternary carbide Ti 3SiC 2 is summarized in the present paper. The ternary carbide Ti 3SiC 2 has hexagonal crystal structure with space group of P6 3/mmc, and has the merits of both metals and ceramics, good electricity and heat conductivity, high Young's modulus and low Vickers hardness, good ductility at high temperature, excellent chemical stability at high temperature, easy to be machined at the room temperature, good oxidation resistance, and high to thermal shock resistance. It can be synthesized by CVD, SHS, HP/HIP, and dense Ti 3SiC 2 ceramics with high purity can be synthexized by HIP. Moreover, Ti 3SiC 2 ceramics have the mechanism for damage tolerant.