Preprints of Annual Meeting of The Ceramic Society of Japan
Preprints of Fall Meeting of The Ceramic Society of Japan
20th Fall Meeting of The Ceramic Society of Japan
Session ID : 1E08
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Host: The Ceramic Society of Japan

Fabrication of AlN/BN Nanocomposites by Carbothermal Reductin and Nitridation of Aluminum Borate and Their Properties
*Takafumi Kusunose, Nobuaki Sakayanagi, Tohru Sekino, Koichi Niihara, Yoichi Ando
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Keywords: aluminum borate, aluminum nitride, boron nitride, thermal conductivity, machinability
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Abstract
AlN/BN nanocomposite powders were produced by heating the starting materials of boric acid, alumina and carbon powders in nitrogen atmosphare. At above 800 oC, aluminum borate was formed by reaction of boric acid with alumina, and the AlN/BN nanocomposite powder was synthesized by carbothermal reduction and nitridation of aluminum borate over at 1500 oC. The AlN/BN nanocomposites sintered by pressureless sintering the nanocomposite powders showed high thermal conductivity and good machinability.
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© The Ceramic Society of Japan 2007
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