Chemical kinetic studies on interfacial reaction in SCS-6 SiC/Ti matrix composites

来源期刊：中国有色金属学报(英文版)2008年第3期

论文作者：朱艳 杨延清 王尧宇

文章页码：733 - 737

Key words：quantum chemistry; SiC/Ti composites; interfacial reaction; chemical kinetics

Abstract: Interfacial reaction and its mechanism of SiC/Ti composite were revealed by chemical kinetic studies. A two-step dynamic model of interfacial reaction in SCS-6 SiC/Ti composites was built up, and the rate constant and the activation energy of the interfacial reactions were obtained based on the quantum chemistry calculation. The results show that the first step, in which the atomic Ti, C and Si are decomposed from Ti matrix and SiC fiber, respectively, is a rate-determined step because the activation energy of the step is much larger than that of the second one in which deferent interfacial reaction products form. The theoretically predicted result of the interfacial reaction is coincident with that of experimental observation.

基金信息：the National Natural Science Foundation of China
the Natural Science Foundation of Shaanxi Province, China
the Key Laboratory Foundation of Shaanxi Province, China
the Foundation of Xi’an Polytechnic University, China