TY - JOUR
T1 - Fabrication of Si-B-C modified C/C-SiC composite by liquid silicon infiltration
AU - Liu, Jiangong
AU - Yin, Xiaowei
AU - Cheng, Laifei
AU - Zhang, Litong
AU - Wang, Qin
PY - 2012/12
Y1 - 2012/12
N2 - In order to reduce the content of residual Si generated in the process of liquid silicon infiltration, B12(C, Si, B)3 modified C/C-SiC composite was prepared by a joint process of slurry impregnation and liquid silicon infiltration. By analyzing the products of B4C-Si system with different B4C/Si molar ratios after sintered at different temperatures, the formation condition of B12(C, Si, B)3 was studied. The results indicate that B4C starts to react with Si at 1300 °C, leading to the formation of a small amount of B12(C, Si, B)3 and SiC. The amount of B12(C, Si, B)3 generated in the reaction increases with increasing sintering temperature. The sintering product of B4C-Si system with a B4C/Si molar ratio of 3:1 at 1500 °C is composed of B12(C, Si, B)3 and SiC. The C/C-SiC composite fabricated by liquid silicon infiltration is composed of amorphous C, β-SiC and B12(C, Si, B)3, and no residual Si is detected.
AB - In order to reduce the content of residual Si generated in the process of liquid silicon infiltration, B12(C, Si, B)3 modified C/C-SiC composite was prepared by a joint process of slurry impregnation and liquid silicon infiltration. By analyzing the products of B4C-Si system with different B4C/Si molar ratios after sintered at different temperatures, the formation condition of B12(C, Si, B)3 was studied. The results indicate that B4C starts to react with Si at 1300 °C, leading to the formation of a small amount of B12(C, Si, B)3 and SiC. The amount of B12(C, Si, B)3 generated in the reaction increases with increasing sintering temperature. The sintering product of B4C-Si system with a B4C/Si molar ratio of 3:1 at 1500 °C is composed of B12(C, Si, B)3 and SiC. The C/C-SiC composite fabricated by liquid silicon infiltration is composed of amorphous C, β-SiC and B12(C, Si, B)3, and no residual Si is detected.
KW - B(C, Si, B)
KW - C/C-SiC
KW - Composites
KW - Liquid silicon infiltration
KW - Slurry impregnation
UR - http://www.scopus.com/inward/record.url?scp=84871977787&partnerID=8YFLogxK
M3 - 文章
AN - SCOPUS:84871977787
SN - 1000-3851
VL - 29
SP - 78
EP - 82
JO - Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica
JF - Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica
IS - 6
ER -