TY - JOUR
T1 - TaB2-SiC-Si multiphase oxidation protective coating for SiC-coated carbon/carbon composites
AU - Ren, Xuanru
AU - Li, Hejun
AU - Fu, Qiangang
AU - Chu, Yanhui
AU - Li, Kezhi
PY - 2013/12
Y1 - 2013/12
N2 - To improve the oxidation resistance of the carbon/carbon (C/C) composites, a TaB2-SiC-Si multiphase oxidation protective ceramic coating was prepared on the surface of SiC coated C/C composites by pack cementation. Results showed that the outer multiphase coating was mainly composed of TaB2, SiC and Si. The multilayer coating is about 200μm in thickness, which has no penetration crack or big hole. The coating could protect C/C from oxidation for 300h with only 0.26×10-2g2/cm2 mass loss at 1773K in air. The formed silicate glass layer containing SiO2 and tantalum oxides can not only seal the defects in the coating, but also reduce oxygen diffusion rates, thus improving the oxidation resistance.
AB - To improve the oxidation resistance of the carbon/carbon (C/C) composites, a TaB2-SiC-Si multiphase oxidation protective ceramic coating was prepared on the surface of SiC coated C/C composites by pack cementation. Results showed that the outer multiphase coating was mainly composed of TaB2, SiC and Si. The multilayer coating is about 200μm in thickness, which has no penetration crack or big hole. The coating could protect C/C from oxidation for 300h with only 0.26×10-2g2/cm2 mass loss at 1773K in air. The formed silicate glass layer containing SiO2 and tantalum oxides can not only seal the defects in the coating, but also reduce oxygen diffusion rates, thus improving the oxidation resistance.
KW - Carbon/carbon composites
KW - Coating
KW - Oxidation resistance
KW - TaB
UR - http://www.scopus.com/inward/record.url?scp=84883240926&partnerID=8YFLogxK
U2 - 10.1016/j.jeurceramsoc.2013.06.028
DO - 10.1016/j.jeurceramsoc.2013.06.028
M3 - 文章
AN - SCOPUS:84883240926
SN - 0955-2219
VL - 33
SP - 2953
EP - 2959
JO - Journal of the European Ceramic Society
JF - Journal of the European Ceramic Society
IS - 15-16
ER -