With liquified petroleum gas as hydrocarbon, carbon felt as porous preform, C/C composites were fast fabricated by multi-coupling fields CVI process. C/C composites with density more than 1.7 g·cm-3 were obtained with lower 650℃ in one cycle within 15h, and pyrocarbon microstructures were investigated with a polarized light microscope (PLM). At the same time, densification process and deposition mechanism of pyrocarbon were discussed. The results show that the density is uniform, and there is existing pyrocarbon with rough laminar(RL), smooth laminar(SL) and banded structure in the same sample.
ZHANG Ming-Yu
,
HUANG Qi-Zhong
,
SU Zhe-An
,
XIE Zhi-Yong
,
ZHU Jian-Jun
. Preparation and Microstructure Analysis of C/C Composites with Multi-coupling Fields CVI[J]. Journal of Inorganic Materials, 2006
, 21(6)
: 1373
-1377
.
DOI: 10.3724/SP.J.1077.2006.01373
[1] Golecki I, Morris R C, Narasimhan D. Method of Rapidly Densifying a porous structure[P].
US Patent 5348774, 1994.
[2] Bruneton E, Narcy B, Oberlin A. Carbon, 1997, 35: 1593--1598.
[3] Granoff B, Pierson H O, Schuster D M. Carbon, 1973, 11: 177--187.
[4] TANG Zhong-hua, ZOU Zhi-qiang, XIONG Jie. Carbon, 2003, 41: 2703--2710.
[5] Houdayer M, Spitz J, Tran V D, et al. Process for the densification of a porous structure[P].
US Patent 4472454, 1984.
[6] 孙万昌, 李贺军, 陈三平(SUN Wan-chang, et al). 无机材料学报(Journal of Inorganic
Materials), 2003, 18(1): 121--128.
[7] John Ofori Y, Stratis V Sotirchos. Electrochem. Soc., 1997, 144(1): 274--289.
[8] Hyeok Je Jeong,Hee Dong Park, et al. Carbon, 1996, 34(3): 417--421.
[9] 刘文川, 邓景屹. 材料导报, 2000, 14(4): 59--60.
[10] 谢志勇, 黄启忠, 苏哲安, 等(XIE Zhi-yong, et al) .无机材料学报(Journal of Inorganic
Materials), 2005, 20(5): 1201--1207.
[11] 谢志勇, 黄启忠, 苏哲安, 等. 复合材料学报, 2005, 22(4): 47--52.
[12] Yan Gui-Shen, Li He-Jun, Hao Zhi-Biao. Acta Physica Sinica, 2002, 51(2): 326--331.
[13] Maquin B, Goyheneche J-M, Derre A, et al. J. Phys. D Appl. Phys., 2000, 33: 8--17.
[14] Xavier Bourrat, Jerome Lavenac, Francis Langlais, et al. Carbon, 2001, 39: 2376--2380.
[15] Granff B. Carbon, 1974, 12: 405--416.
[16] 潘祖仁, 于在璋. 自由基聚合. 北京: 化学工业出版社, 1983. 14--31.
[17] Zhang W G, Hu Z J, Huttinger K J. Carbon, 2002, 40: 2529--2545.
