TY - JOUR
T1 - Heat treatment effects on microstructure and mechanical properties of CVI SiCf/PyC/SiC composites with Cansas-Ⅲ SiC fibers
AU - Ma, Yujie
AU - Yang, Shaobo
AU - Meng, Xinyu
AU - Kou, Sijie
AU - Deng, Juanli
AU - Fan, Shangwu
N1 - Publisher Copyright:
© 2023 Elsevier Ltd
PY - 2023/11
Y1 - 2023/11
N2 - The microstructure and mechanical properties of CVI-Cansas-III/PyC/SiC composites were systematically investigated after heat treatment under high temperature argon atmosphere, ranging from 1000 °C to 1500 °C, for different time durations. The results showed that the Cansas-III fibres degraded with increasing heat treatment temperature, resulting in degradation of the fibre properties due to pyrolysis of the SiOC phase inside the fibres. The bending strength of the composites remained nearly constant upon heat treatment at 1000 °C and 1250 °C, while a decline in bending strength was observed upon increasing the heat treatment temperature and time, specifically at 1350 °C and above. Moreover, the composites maintained their pseudo-plastic fracture behaviour below 1450 °C, while displaying brittle fracture of the ceramic after 100 h of heat treatment at 1500 °C, due to the complete crystallisation of the fibres.
AB - The microstructure and mechanical properties of CVI-Cansas-III/PyC/SiC composites were systematically investigated after heat treatment under high temperature argon atmosphere, ranging from 1000 °C to 1500 °C, for different time durations. The results showed that the Cansas-III fibres degraded with increasing heat treatment temperature, resulting in degradation of the fibre properties due to pyrolysis of the SiOC phase inside the fibres. The bending strength of the composites remained nearly constant upon heat treatment at 1000 °C and 1250 °C, while a decline in bending strength was observed upon increasing the heat treatment temperature and time, specifically at 1350 °C and above. Moreover, the composites maintained their pseudo-plastic fracture behaviour below 1450 °C, while displaying brittle fracture of the ceramic after 100 h of heat treatment at 1500 °C, due to the complete crystallisation of the fibres.
KW - CVI SiC/PyC/SiC composites
KW - Cansas-Ⅲ SiC fibers
KW - Heat treatment
KW - Mechanical properties
UR - http://www.scopus.com/inward/record.url?scp=85162013299&partnerID=8YFLogxK
U2 - 10.1016/j.jeurceramsoc.2023.06.034
DO - 10.1016/j.jeurceramsoc.2023.06.034
M3 - 文章
AN - SCOPUS:85162013299
SN - 0955-2219
VL - 43
SP - 5940
EP - 5949
JO - Journal of the European Ceramic Society
JF - Journal of the European Ceramic Society
IS - 14
ER -