Effect of carbon content on the formation of Ti3SiC2 in the liquid silicon infiltration process

科研成果: 书/报告/会议事项章节章节同行评审

摘要

In the present work, Ti3SiC2-based composite was fabricated by pressureless infiltrating TiC-C preform with liquid silicon. The effect of carbon content on the phase composition and microstructure is studied, and then the reaction path of forming Ti3SiC2 in the liquid silicon infiltration (LSI) process is discussed. The existence of carbon is beneficial to the formation of Ti3SiC2, and Ti3SiC2 only appears in the sample with enough carbon content owing to the direct reaction between silicon melt and carbon. In the LSI process, silicon melt firstly reacts with TiC to form TiSi2 and SiC, and then Ti-Sinch eutectic is formed by dissolving the intermediate phase TiSi2 in silicon melt. Finally, Ti3SiC2 is formed by the reaction between Ti-Sinch eutectic and TiC with the existence of carbon.

源语言英语
主期刊名High Temperature Ceramic Matrix Composites 8
出版商wiley
501-507
页数7
ISBN(电子版)9781118932995
ISBN(印刷版)9781118932988
DOI
出版状态已出版 - 1 1月 2014

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