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Igawa, Naoki; Taguchi, Tomitsugu; Nozawa, Takashi*; Snead, L. L.*; Hinoki, Tatsuya*; McLaughlin, J. C.*; Kato, Yutai*; Jitsukawa, Shiro; Koyama, Akira*
Journal of Physics and Chemistry of Solids, 66(2-4), p.551 - 554, 2005/02
Times Cited Count：47 Percentile：82.48(Chemistry, Multidisciplinary)Silicon carbide is an important engineering ceramic because of its high strength and stability at high temperature and low induced radioactivity after neutron irradiation. Though monolithic SiC is brittle and low toughness, SiC fiber reinforced SiC matrix composites significantly improve these properties and therefore are attractive candidate materials for fusion reactor structural applications. Recently, stoichiometric SiC fibers with superior mechanical properties have been produced. We carried out the optimization of interface and composite fabrication using the chemical vapor infiltration, which is the one of the best techniques to fabricate the SiC composite. The composite with higher density and homogeneous matrix was obtained by the optimization of materials and carrier gas flow rate. The porosity was decreased with increasing the fiber volume fraction. We adopted the carbon or carbon/SiC interface between fiber and matrix and we found that the dependence of interface thickness on the tensile properties was small in the interface thickness from 50 to 300 nm.
Taguchi, Tomitsugu; Igawa, Naoki; Yamada, Reiji; Jitsukawa, Shiro
Journal of Physics and Chemistry of Solids, 66(2-4), p.576 - 580, 2005/02
Times Cited Count：51 Percentile：84.09(Chemistry, Multidisciplinary)SiC/SiC composites are expected to be one of the candidate materials for fusion reactors because of the low radioactivity after neutron irradiation and excellent mechanical properties at high temperature. Reaction-Bonding (RB) process was employed since this process has a possibility of producing a much denser matrix compared with other processes. SiC fibers, however, adhere strongly to the matrix because of high reactiveness of molten Si with the SiC fiber during RB process. In this study, we investigated the effects of SiC layer as an interphase on fracture behavior in the SiC/SiC. The specimen without an interphase layer showed catastrophic failure behavior while the specimen with SiC interphase layer exhibited non-catastrophic failure behavior by 3-point bending testing. The microstructure observation indicated that SiC fibers did not adhere to the matrix in the specimen with SiC interpahse layer. After 3-point bending testing, the pull-out phenomenon occurred in the SiC/SiC with SiC interphase layer while did not occur in the composite without interphase layer.
Igawa, Naoki; Taguchi, Tomitsugu; Yamada, Reiji; Ishii, Yoshinobu; Jitsukawa, Shiro
Ceramic Engineering and Science Proceedings, Vol.26, No.2, p.27 - 34, 2005/00
no abstracts in English
Ishihara, Masahiro
Seramikkusu, 39(10), p.834 - 837, 2004/10
no abstracts in English
Igawa, Naoki; Taguchi, Tomitsugu; Yamada, Reiji; Ishii, Yoshinobu; Jitsukawa, Shiro
Journal of Nuclear Materials, 329-333(Part1), p.554 - 557, 2004/08
Times Cited Count：6 Percentile：40.72(Materials Science, Multidisciplinary)no abstracts in English
Ishihara, Masahiro; Hanawa, Satoshi; Sogabe, Toshiaki; Tachibana, Yukio; Iyoku, Tatsuo
Materials Science Research International, 10(1), p.65 - 70, 2004/04
no abstracts in English
Ishihara, Masahiro
Tanso, (208), p.135 - 144, 2003/09
no abstracts in English
Baba, Shinichi; Ishihara, Masahiro; Suzuki, Yoshio*; Takahashi, Tsuneo*; Hoshiya, Taiji
JAERI-Data/Code 2002-008, 126 Pages, 2002/03
JAERI-Data-Code-2002-008.pdf:4.82MB
no abstracts in English
Baba, Shinichi; Suzuki, Yoshio*; Takahashi, Tsuneo*; Ishihara, Masahiro; Hayashi, Kimio; Saito, Tamotsu; Sozawa, Shizuo; Saito, Takashi; Sekino, Hajime
JAERI-Research 2001-028, 109 Pages, 2001/03
JAERI-Research-2001-028.pdf:4.55MB
no abstracts in English
Taguchi, Tomitsugu; Igawa, Naoki; Yamada, Reiji; Futakawa, Masatoshi; Jitsukawa, Shiro
Ceramic Engineering and Science Proceedings (25th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: A), 22(3), p.533 - 538, 2001/03
no abstracts in English
/SiC
compositeFutakawa, Masatoshi; Tanabe, Yuji*; Wakui, Takashi*; Kogawa, Hiroyuki; Hino, Ryutaro; Eto, Motokuni
International Journal of Impact Engineering, 25(1), p.29 - 40, 2001/01
Times Cited Count：11 Percentile：48.17(Engineering, Mechanical)no abstracts in English
Sugimoto, Masaki
Kogyo Zairyo, 49(1), p.72 - 76, 2001/01
no abstracts in English
Futakawa, Masatoshi; Wakui, Takashi*; Steinbrech, R. W.*; Tanabe, Yuji*; Hara, Toshiaki*
Nihon Kikai Gakkai Rombunshu, A, 66(646), p.152 - 158, 2000/06
no abstracts in English
Taguchi, Tomitsugu; Igawa, Naoki; Yamada, Reiji; Futakawa, Masatoshi; Jitsukawa, Shiro
Proceedings of 24th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures A, 21(3), p.453 - 458, 2000/00
no abstracts in English
/SiC compositeFutakawa, Masatoshi; Tanabe, Yuji*; Kogawa, Hiroyuki; Hino, Ryutaro; Eto, Motokuni
Impact Response of Materials and Structures, p.363 - 368, 1999/00
no abstracts in English
C-carbon fiber composite irradiated with low energy deuterium ionsJimbo, Ryutaro*; Nakamura, Kazuyuki; Bandourko, V.*; Dairaku, Masayuki; Okumura, Yoshikazu; Akiba, Masato
Journal of Nuclear Materials, 266-269, p.1103 - 1107, 1999/00
Times Cited Count：5 Percentile：40.64(Materials Science, Multidisciplinary)no abstracts in English
Seguchi, Tadao; Morita, Yosuke
Polymer Handbook, p.VI583 - VI589, 1999/00
no abstracts in English
Akiniwa, Yoshiaki*; Tanaka, Keisuke*; *; Hayashi, Makoto*; Morii, Yukio; Minakawa, Nobuaki
Zairyo, 47(7), p.755 - 761, 1998/07
no abstracts in English
Taguchi, Tomitsugu; Igawa, Naoki; Yamada, Reiji
Proc. of 2nd IEA/JUPITER Joint Int. Workshop on SiC/SiC Ceramic Composites for Fusion Applications, p.97 - 100, 1997/00
no abstracts in English
