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Okano, Masanori; Jitsukata, Shu*; Kuno, Takehiko; Yamada, Keiji
Proceedings of International Conference on Toward and Over the Fukushima Daiichi Accident (GLOBAL 2011) (CD-ROM), 5 Pages, 2011/12
Igawa, Naoki; Taguchi, Tomitsugu; Yamada, Reiji; Ishii, Yoshinobu; Jitsukawa, Shiro
Journal of Nuclear Materials, 367-370(1), p.725 - 729, 2007/08
Times Cited Count：12 Percentile：63.51(Materials Science, Multidisciplinary)no abstracts in English
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(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
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：40.51(Materials Science, Multidisciplinary)no abstracts in English
Yamada, Reiji; Igawa, Naoki; Taguchi, Tomitsugu; Jitsukawa, Shiro
Journal of Nuclear Materials, 307-311(Part2), p.1215 - 1220, 2002/12
Times Cited Count：24 Percentile：80.53(Materials Science, Multidisciplinary)SiC fiber-reinforced SiC composites (SiC/SiC) are considered an advanced structural material for blanket modules of a fusion reactor, which requires high thermal conductivity in order to keep thermal stresses in the material lower than the allowable design stress. The sintered SiC fiber recently developed has obtained high thermal conductivity, so it is highly expected that sintered SiC fiber-reinforced SiC/SiC composites would also show high thermal conductivity. In this study several types of 3D SiC/SiC composites were fabricated by either CVI or PIP method. The results of the thermal conductivity measurements show that the maximum thermal conductivity at room temperature was about 60 W/mK for CVI composites or 25W/mK for PIP ones. These values are considerably higher than those of non-sintered SiC fiber reinforced SiC/SiC composites, which indicates a possibility that the developed materials would be promising. The FEM thremal analysis shows the good agreement between the caluculated and experimental results.
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
Nishio, Satoshi; Ushigusa, Kenkichi; Ueda, Shuzo; Polevoi, A.*; Kurita, Genichi; Tobita, Kenji; Kurihara, Ryoichi; Hu, G.; Okada, Hidetoshi*; Murakami, Yoshiki*; et al.
JAERI-Research 2000-029, 105 Pages, 2000/10
JAERI-Research-2000-029.pdf:4.19MB
no abstracts in English
Igawa, Naoki; Taguchi, Tomitsugu; Yamada, Reiji; Jitsukawa, Shiro
Ceramic Engineering and Science Proceedings (24th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: B), 21(4), p.237 - 242, 2000/09
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
Yamada, Reiji; Taguchi, Tomitsugu; Igawa, Naoki; Jitsukawa, Shiro
Proceedings of 4th International Energy Agency Workshop on SiCf/SiC Ceramic Composites for Fusion Structural Application, p.33 - 41, 2000/00
no abstracts in English
Matsui, Yoshinori; Hoshiya, Taiji; Jitsukawa, Shiro; Tsukada, Takashi; Omi, Masao; ; Oyamada, Rokuro; *
Journal of Nuclear Materials, 233-237, p.188 - 191, 1996/00
Times Cited Count：5 Percentile：45.02(Materials Science, Multidisciplinary)no abstracts in English
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JAERI-M 5958, 51 Pages, 1975/01
no abstracts in English
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JAERI-M 5728, 102 Pages, 1974/06
no abstracts in English
; ; ; ; ;
JAERI-M 5628, 90 Pages, 1974/03
no abstracts in English
Okano, Masanori; Goto, Yuichi; Jitsukata, Shu*; Nemoto, Hirokazu*; Kuno, Takehiko; Yamada, Keiji
no journal, ,
no abstracts in English
Okano, Masanori; Goto, Yuichi; Jitsukata, Shu*; Nemoto, Hirokazu*; Takano, Masato; Komoto, Norio; Kuno, Takehiko; Yamada, Keiji
no journal, ,
no abstracts in English
Sr, 
Sr in high radioactive liquid wastes of Fukushima Daiichi Nuclear Power StationOkano, Masanori; Jitsukata, Shu*; Nemoto, Hirokazu*; Asai, Shiho; Kameo, Yutaka; Kuno, Takehiko; Yamada, Keiji
no journal, ,
no abstracts in English
Takahashi, Naoki; Kobayashi, Daisuke; Yoshimoto, Katsunobu; Lee, J.-Y.*; Wakabayashi, Hitoshi*; Tochihara, Yutaka*; Yamada, Minoru*; Tanaka, Hideki*
no journal, ,
no abstracts in English
