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

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Abstract

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.

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Authors and Affiliations

  1. Materials and Structures Laboratory, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama, 226, Japan

    H. Kajiura, Y. Tanabe & E. Yasuda

  2. Department of Chemical Engineering, Kogakuin University, Nakano, Hachioji, Tokyo, 192, Japan

    A. Kaiho & I. Shiota

  3. Faculty of Science and Engineering, Teikyo University of Science and Technology, Yatsuzawa, Uenohara, Kitatsuru-gun, Yamanashi, 409, Japan

    S. Yamada

Authors
  1. H. Kajiura
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  2. Y. Tanabe
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  3. E. Yasuda
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  4. A. Kaiho
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  5. I. Shiota
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  6. S. Yamada
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Kajiura, H., Tanabe, Y., Yasuda, E. et al. Microstructural control of pitch matrix carbon-carbon composite by iodine treatment. Journal of Materials Research 13, 302–307 (1998). https://doi.org/10.1557/JMR.1998.0041

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  • DOI: https://doi.org/10.1557/JMR.1998.0041

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