TY - JOUR
T1 - Thermal-shock Resistance of SiC-C Functionally Gradient Material(FGM) Prepared by Chemical Vapor Deposition
AU - Sasaki, Makoto
AU - Wang, Yucong
AU - Ohkubo, Akira
AU - Hashida, Toshiyuki
AU - Hirai, Toshio
AU - Takahashi, Hideaki
N1 - Copyright:
Copyright 2016 Elsevier B.V., All rights reserved.
PY - 1990
Y1 - 1990
N2 - Thermal stress calculated in SiC/C⋅FGM was considerably smaller than that of SiC monolith. The preparation of SiC/C⋅FGM, having the graded concentration predicted from the calculation, was tried by using CVD technique under the following conditions; a SiCl4-CH4-H2 system, a deposition temperature of 1773K, total gas pressure of 1.3kPa. The film(thickness of 0.4mm) having a compositional gradient from C to SiC was obtained on a graphite substrate by changing the Si/C ratio in the gas phase during the deposition. Many small pores were observed in the range of 40~60 mol%C. SiC/C⋅FGM was not broken under cyclic high temperature heat flow conditions (heat flux=0. 7MW⋅m-2), but SiC monolith was broken under the same conditions.
AB - Thermal stress calculated in SiC/C⋅FGM was considerably smaller than that of SiC monolith. The preparation of SiC/C⋅FGM, having the graded concentration predicted from the calculation, was tried by using CVD technique under the following conditions; a SiCl4-CH4-H2 system, a deposition temperature of 1773K, total gas pressure of 1.3kPa. The film(thickness of 0.4mm) having a compositional gradient from C to SiC was obtained on a graphite substrate by changing the Si/C ratio in the gas phase during the deposition. Many small pores were observed in the range of 40~60 mol%C. SiC/C⋅FGM was not broken under cyclic high temperature heat flow conditions (heat flux=0. 7MW⋅m-2), but SiC monolith was broken under the same conditions.
UR - http://www.scopus.com/inward/record.url?scp=0025386805&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0025386805&partnerID=8YFLogxK
U2 - 10.2497/jjspm.37.271
DO - 10.2497/jjspm.37.271
M3 - Article
AN - SCOPUS:0025386805
VL - 37
SP - 271
EP - 274
JO - Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
JF - Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
SN - 0532-8799
IS - 2
ER -