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

  • H. Kajiura (a1), Y. Tanabe (a1), E. Yasuda (a1), A. Kaiho (a2), I. Shiota (a2) and S. Yamada (a3)...

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

  • H. Kajiura (a1), Y. Tanabe (a1), E. Yasuda (a1), A. Kaiho (a2), I. Shiota (a2) and S. Yamada (a3)...

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