TY - CHAP
T1 - Effect of carbon content on the formation of Ti3SiC2 in the liquid silicon infiltration process
AU - Fan, Xiaomeng
AU - Yin, Xiaowei
AU - Wang, Lei
AU - Zhang, Litong
AU - Cheng, Laifei
N1 - Publisher Copyright:
© 2014 by The American Ceramic Society. All rights reserved.
PY - 2014/1/1
Y1 - 2014/1/1
N2 - 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.
AB - 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.
KW - Carbon content
KW - Liquid silicon infiltration
KW - Oxidation resistance
KW - Pressureless infiltrating
KW - Thermal conductivity
UR - http://www.scopus.com/inward/record.url?scp=85101893333&partnerID=8YFLogxK
U2 - 10.1002/9781118932995.ch56
DO - 10.1002/9781118932995.ch56
M3 - 章节
AN - SCOPUS:85101893333
SN - 9781118932988
SP - 501
EP - 507
BT - High Temperature Ceramic Matrix Composites 8
PB - wiley
ER -