Toshio Kawanami
Tosoh
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Featured researches published by Toshio Kawanami.
Materials Science and Engineering Serving Society#R##N#Proceedings of the Third Okinaga Symposium on Materials Science and Engineering Serving Society, Chiba, Japan, 3–5 September, 1997 | 1998
Hiroshi Ohnishi; Katsumi Maeda; Saburo Kose; Toshio Kawanami
Publisher Summary This chapter investigates the mechanical properties at high temperature, which were the flexural strength and creep resistance of high-purity mullite ceramics. Mullite is not a stoichiometric composition, as discussed in the phase equilibrium diagrams for Al2O3-SiO2 system. Therefore, the mechanical properties at high temperatures should change as a function of Al2O3/SiO2 ratio. Ohnishi revealed that mullite ceramics with 74-76wt% Al2O3 exhibited smaller degradation of strength and high creep-resistance, and reported impurity dependence of mechanical properties for near stoichiometric composition was investigated. The influence of the relationship between Al2O3/SiO2 ratio and impurity on the mechanical properties have been investigated. This chapter investigates the purpose of the influence of impurity of mullite ceramics prepared using the sol-gel method on the mechanical properties at high temperature.
Archive | 1992
Koichi Niihara; Jianren Zeng; Atsushi Nakahira; Tohru Sekino; Yoshinari Miyamoto; Hiroshi Ohnishi; Toshio Kawanami
ZrO2 strengthened A12O3/SiC nanocomposites, A12O3/5vol%SiC/20 vol% ZrO2, were successfully fabricated by the pressureless sintering method. However, the pores and defects remained during pressureless sintering were found to decrease the fracture strength and toughness of A12O3/SiC/ZrO2 nanocomposites. To eliminate these pores and defects, the A12O3/SiC/ZrO2 composite was hot-isostatically pressed after pressureless sintering. The mechanical properties of A12O3/SiC/ZrO2 nanocomposites were significantly improved by the post HIPing. Especially, the fracture strength increased approximately twice by the HIP treatment.
Journal of The Ceramic Society of Japan | 1990
Hiroshi Ohnishi; Toshio Kawanami; Atsushi Nakahira; Koichi Niihara
Archive | 1993
Toshio Kawanami; Kenichi Nishioka; Hirohisa Tanaka; 利夫 河波; 裕久 田中; 憲一 西岡
Archive | 2004
Toshio Kawanami; Koichi Niihara; Koji Onishi; Miyuki Sakuta; T. Sekino; 美由紀 佐久田; 宏司 大西; 晧一 新原; 利夫 河波; 徹 関野
Archive | 2002
Miyuki Sakuta; Hiroshi Onishi; Toshio Kawanami
Archive | 2000
Toshio Kawanami; Hironori Naka; Koji Onishi; 博律 中; 宏司 大西; 利夫 河波
Archive | 1994
Yutaka Fukui; Shozo Hirai; Toshio Kawanami; Hiromichi Nakarai; Masanori Sakai-shi Nakatani; Koji Onishi; Saburo Ose; Yoshito Soma; Naoyuki Uejima; 直幸 上島; 正則 中谷; 博通 半井; 宏司 大西; 三郎 小瀬; 章三 平井; 芳人 惣万; 利夫 河波; 裕 福井
Archive | 1993
Toshio Kawanami; Hiroshi Ohnishi; Hiroyuki Matsumura; Michiyuki Aimoto; Toshihiko Arakawa; Michiharu Ogai
Journal of The Ceramic Society of Japan | 2007
Hiroshi Ohnishi; Tetsurou Fukuhara; Toshio Kawanami; Tohru Sekino; Yuichi Ikuhara; Koichi Niihara