TY - JOUR
T1 - Continuous synchronous composite process for fabricating carbon/silicon carbide composites
AU - Xiao, P.
AU - Xu, Y. D.
AU - Zhang, L. T.
AU - Cheng, L. F.
AU - Chen, Z. F.
PY - 2001/8/31
Y1 - 2001/8/31
N2 - The continuous synchronous composite (CSC) process is a new technique, the preparation of reinforcement-phase accompanied simultaneously the deposition of SiC matrix, based on CVI principles for fabrication of ceramic matrix composites. In the CSC process, there was a gradient temperature field on the surface of the graphitic substrate, consisting of high (1000-1200°C), intermediate (900-1000°C) and low (700-900°C) temperature regions, by a bottom heating-element. Following the rotating substrate, micro-pores were well infiltrated in the intermediate temperature regions by gas diffusion transport, and macro-pores were rapidly filled with SiC in the high temperature regions by gas flow transport, respectively. In the present paper, 2-dimension carbon cloth reinforced SiC composites was fabricated by CSC process, and the microstructure, deposition rate and conversion efficiency of methyltrichlorosilane (MTS) were investigated. The densification of C/SiC composites was uniform, and the highest deposition rate within macro-pores was 25 μm h-1, and the conversion efficiency of MTS varied from 11% to a maximum of 27%.
AB - The continuous synchronous composite (CSC) process is a new technique, the preparation of reinforcement-phase accompanied simultaneously the deposition of SiC matrix, based on CVI principles for fabrication of ceramic matrix composites. In the CSC process, there was a gradient temperature field on the surface of the graphitic substrate, consisting of high (1000-1200°C), intermediate (900-1000°C) and low (700-900°C) temperature regions, by a bottom heating-element. Following the rotating substrate, micro-pores were well infiltrated in the intermediate temperature regions by gas diffusion transport, and macro-pores were rapidly filled with SiC in the high temperature regions by gas flow transport, respectively. In the present paper, 2-dimension carbon cloth reinforced SiC composites was fabricated by CSC process, and the microstructure, deposition rate and conversion efficiency of methyltrichlorosilane (MTS) were investigated. The densification of C/SiC composites was uniform, and the highest deposition rate within macro-pores was 25 μm h-1, and the conversion efficiency of MTS varied from 11% to a maximum of 27%.
KW - Carbon/silicon carbide
KW - Continuous synchronous composite
KW - Conversion efficiency
KW - Deposition rate
KW - Microstructure
UR - http://www.scopus.com/inward/record.url?scp=0035979890&partnerID=8YFLogxK
U2 - 10.1016/S0921-5093(00)01836-0
DO - 10.1016/S0921-5093(00)01836-0
M3 - 文章
AN - SCOPUS:0035979890
SN - 0921-5093
VL - 313
SP - 244
EP - 250
JO - Materials Science and Engineering: A
JF - Materials Science and Engineering: A
IS - 1-2
ER -