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J. Korean Ceram. Soc. > Volume 19(2); 1982 > Article
Journal of the Korean Ceramic Society 1982;19(2): 139.
$MgO-SiO_2$계 자기에 관한 연구
이응상, 이종근, 임대영, 최성철
한양대학교 무기재료공학과
A Study on the Porcelain Body of $MgO-SiO_2$ System
This study has examined closely on the various foundamental conditions for the fitting in steatite porcelain as a industrial porcelain of superior quality, and as a decorated porcelain. The materials consisting of the Kyul Sung talc, and the sea water magnesia clinker power which was produced from Sam Hwa-Hwa Sung, as major constituents have been used, and also used Hyup Jin kaolin as clay minerals to give them plasticity. First, the mixture was made of corresponding in the theoretical composition of enstatite with Kyul sung talc and sea water magnesia clinker, and kaolin was added in various kinds of 1%, 2.5% 5%, 10%, and 20% by weight of the mixture. Next, the mixture was fired at the various temperatures from 1330 to 145$0^{circ}C$. After we examined closely the physical properties and microstructures, we achieved the results that noted from this study were listed below. 1. The addition amount of kaolin should generally be from 5% to 10% by weight of the mixture to give mixture plasticity in steatite porcelain, but preferably about 20% to consider the firing temperature. 2. The temperature of the optimum firing range is from 1390 C to 142$0^{circ}C$. 3. A case, which the $A_2$ composition had been fired at 142$0^{circ}C$, showed a good effect in the strength, but showed a bad result in the absorption. Therefore, the specimens of $A_4$ the composition has excellent in properties of matters when the composition is fired at 142$0^{circ}C$. Also, we consider that the specimens of the $A_5$ composition, which is fired at 139$0^{circ}C$, is suitable for the $MgO-SiO_2$ porcelain bodies with respect to the various properties.
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