Preparation of Alumina/YAG Composite by Process Control during Sintering

Akihiko Kawasumi; Kazuaki Hashimoto; Yoshitomo Toda; Masamitsu Imai; Toyohiko Yano

doi:10.14853/pcersj.2002F.0.369.0

15th Fall Meeting of The Ceramic Society of Japan

DOI https://doi.org/10.14853/pcersj.2002F.0.369.0

Conference information

Host: The Ceramic Society of Japan

Preparation of Alumina/YAG Composite by Process Control during Sintering

Akihiko Kawasumi, Kazuaki Hashimoto, Yoshitomo Toda, Masamitsu Imai, Toyohiko Yano

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Keywords: Alumina Matrix Composite, Process, Spray Pyrolysis, Yttrium Aluminum Garnet

CONFERENCE PROCEEDINGS FREE ACCESS

Pages 369

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Abstract

First, alumina powder was synthesized from aluminum nitrate solution using a spray-pyrolysis aparatus. Obtained alumina powder was compacted and calcined at different temperature. Then, YAG solution was impregnated into the calcined compact. After that, these compacts were dried. This process repeated several times. Finally, they were hot-pressed. Concentration of YAG after 5 times impregnation and then hot-pressed at 1500°C was about 43vol.%. The bulk density of the composite was 4.07g/cm³ and bending strength was about 800MPa.

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