TY - JOUR
T1 - Modelling of oxidation kinetics of C/SiC composites based on factorization method
AU - Xiang, Hua
AU - Cheng, Laifei
AU - Wei, Xi
AU - Luan, Xingang
PY - 2004/11
Y1 - 2004/11
N2 - The mass change curves for C/SiC composites oxidized in dry oxygen were analyzed using factorization method and the different factors influencing the composites oxidation kinetics in different temperature ranges were determined, based on which a model for the oxidation kinetics of C/SiC composites was developed. The main conclusions are as follows: for θ< 700°C, the oxidation kinetics of the composites is controlled by the reaction rate of carbon with oxygen and so-called linear kinetics is observed; for 700°C<θ<1000°C, it is the oxygen diffusion through coating cracks that controls the composites oxidation kinetics, representing a parabolic kinetics; for θ>1000°C, the closing of coating cracks, oxygen diffusion through silica film and the oxidation of SiC coating will control the oxidation kinetics of the composites.
AB - The mass change curves for C/SiC composites oxidized in dry oxygen were analyzed using factorization method and the different factors influencing the composites oxidation kinetics in different temperature ranges were determined, based on which a model for the oxidation kinetics of C/SiC composites was developed. The main conclusions are as follows: for θ< 700°C, the oxidation kinetics of the composites is controlled by the reaction rate of carbon with oxygen and so-called linear kinetics is observed; for 700°C<θ<1000°C, it is the oxygen diffusion through coating cracks that controls the composites oxidation kinetics, representing a parabolic kinetics; for θ>1000°C, the closing of coating cracks, oxygen diffusion through silica film and the oxidation of SiC coating will control the oxidation kinetics of the composites.
KW - Carbon/silicon carbide composites
KW - Factorization method
KW - Oxidation kinetics modelling
UR - http://www.scopus.com/inward/record.url?scp=19944432118&partnerID=8YFLogxK
M3 - 文章
AN - SCOPUS:19944432118
SN - 0454-5648
VL - 32
SP - 1335-1340+1346
JO - Kuei Suan Jen Hsueh Pao/Journal of the Chinese Ceramic Society
JF - Kuei Suan Jen Hsueh Pao/Journal of the Chinese Ceramic Society
IS - 11
ER -