Application of Millimeter-wave Heating to Sintering of α-Alumina and Annealing of γ-Alumina(Physics, Processes, Instruments & Measurements, INTERNATIONAL SYMPOSIUM OF JWRI 30TH ANNIVERSARY)
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概要
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Millimeter-wave (MM) heating was applied to the sintering of α-alumina and to the annealing of γ-alumina. Dependence of densification on the sintering temperature and time were studied in α-alumina compacts and the behavior of transformation from γ-phase to α-phase on γ-alumina compacts was evaluated from X-ray diffraction patterns. Nearly fully densified α-alumina was obtained at 1523K in the MM-sintering, indicating a decrease of about 250K in the sintering temperature in comparison with conventional sintering. Transformation to α-phase was observed at 1173K for 7.2ks in the MM-annealing. This temperature was lower by 200K than the conventional annealing method.
- 大阪大学の論文
著者
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MIYAKE Shoji
Osaka University
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MAKINO Yukio
Osaka University
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Mori Masakazu
Osaka University
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SAWAMURA Isao
Osaka University
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