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J. Korean Ceram. Soc. > Volume 32(5); 1995 > Article
Journal of the Korean Ceramic Society 1995;32(5): 527.
알루미늄을 첨가한 CaO의 치밀화와 내수화성 증진
이용구, 이철규, 전병세
경남대학교 무기재료공학과
Densification and Enhancement of the Hydration Resistance of CaO with Aluminum
ABSTRACT
In this research, the emphasis was focused on the rearrangement and densification behavior of CaO particles when the aluminum was added to improve the hydration resistance. For the case of 0.5vol% Al added specimen, the rearrangement of CaO particles due to liquid aluminum was terminated near 140$0^{circ}C$ where the theoretically calculated fractional volume of solid reached 0.74 under Ar atmosphere. The density of the specimen sintered at 155$0^{circ}C$ for 5hrs reached 96% of relative theoretical density when the ambient was switched to O2 at intermediate and final stages of the sintering. The weight gain due to the hydration after 60 days under 72% of relative humidity at 26$^{circ}C$ was less than 1%.
Key words: Sintering, CaO with Al, Hydration
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