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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 |
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| ABSTRACT |
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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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