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Microstructural control of pitch matrix carbon-carbon composite by iodine treatment

Published online by Cambridge University Press:  31 January 2011

H. Kajiura ,
Y. Tanabe ,
E. Yasuda ,
A. Kaiho ,
I. Shiota  and
S. Yamada
H. Kajiura
Affiliation:
Materials and Structures Laboratory, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226, Japan
Y. Tanabe
Affiliation:
Materials and Structures Laboratory, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226, Japan
E. Yasuda
Affiliation:
Materials and Structures Laboratory, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226, Japan
A. Kaiho
Affiliation:
Department of Chemical Engineering, Kogakuin University, Nakano, Hachioji, Tokyo 192, Japan
I. Shiota
Affiliation:
Department of Chemical Engineering, Kogakuin University, Nakano, Hachioji, Tokyo 192, Japan
S. Yamada
Affiliation:
Faculty of Science and Engineering, Teikyo University of Science and Technology, Yatsuzawa, Uenohara, Kitatsuru-gun, Yamanashi 409, Japan
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Extract

Matrix microstructure of a pitch-based carbon-carbon composite was controlled by an iodine treatment. Coal-tar pitch having the softening point of 101 °C was used as a matrix precursor. The iodine treatment was carried out on a pitch-impregnated specimen at 90 °C for 3–20 h. The specimen was carbonized at 800 °C and graphitized at 2000–3000 °C. The carbon yield increased from 73% to 93% by the iodine treatment. Microstructures of carbonized specimens changed from a flow type texture to a mosaic type one by the iodine treatment. The microstructural development to graphitic structure was suppressed by the iodine treatment.

Type
Articles
Information
Journal of Materials Research , Volume 13 , Issue 2 , February 1998 , pp. 302 - 307
Copyright
Copyright © Materials Research Society 1998

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