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Journal of the Korean Ceramic Society 1982;19(3): 241. |
| 식기용 자기소지에 관한 연구 |
| 장승현, 정형진 |
| 한국과학기술원 건축재료연구실 |
| A Study on the Dinnerware Porcelain Bodies |
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| ABSTRACT |
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Two dinnerware porcelain bodies involving partial replacement of feldspar and kaoline by about 35wt% domestic GYUNGJU-pottery stone were developed and their properties such as shrinkage, porosity, firing range, linear thermal expansion, pyroplastic deformation, degree of whiteness and mechanical strength were compared with those of a traditional clay-flint-feldspar body. The experimental results showed that one of the clay-flint-feldspar-pottery stone body with 1% ZnO addition had the firing range of 115$0^{circ}C$~121$0^{circ}C$, whereas the traditional body had the firing range of 12$25^{circ}C$~129$0^{circ}C$. The linear drying shrinkage and linear dry-to-fired shrinkage of all bodies were 2.5~4.5% and 15~18%, respectively. And the major crystalline phases of sintered bodies were $alpha$-quartz and secondary mullite surrounded by glassy phases. The modulus of rutpture of sintered bodies was ranged from 860 to 870kg/$textrm{cm}^2$, and the microhardness of sintered bodies was 680 kg/$textrm{cm}^2$. |
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