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J. Korean Ceram. Soc. > Volume 32(3); 1995 > Article
Journal of the Korean Ceramic Society 1995;32(3): 331.
마이크로파 혼합 가열에 의한 $Al-Al_2O_3$ 분말성형체의 산화와 소결
박정현, 안주삼
연세대학교 공과대학 세라믹공학과
The Oxidation and Sintering of $Al-Al_2O_3$ Powder Mixture by using Microwave (Hybrid) Heating
Microwave (Hybrid) Heating (MHH) was used to oxidize and sinter Al-Al2O3 powder mixture. For 25 v/o Al specimen and 35 v/o Al specimen, the total processing to produce low-shrinkage reaction bonded alumina was carried out within 1 hour even though conventional furnace process took more than 10 hours. Compared with conventional fast firing process, MHH process increased more than 40% oxidation at the same temperature, and these high oxidation rates were thought to be caused by the surface ohmic current on Al particles.
Key words: Microwave (hybrid) heating, $Al-Al_2O_3$ powder mixture, Oxidation of Al
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