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Journal of the Korean Ceramic Society 1991;28(10): 793. |
| 다결정상 Machinable Ceramics의 제조 |
| 김재국, 양삼열1, 정창주 |
전남대학교 무기재료공학과
1조선내화(주) |
| Fabrication of Multicrystalline Machinable Ceramics |
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| ABSTRACT |
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The multicrystalline machinable ceramics was fabricated by melting method using domestic pyrophyllite. After determination of optimum crystallization temperature and time from results of DTA, XRD and SEM, base glasses were heat treated by 2-step schedule. Main crystalline phases identified by XRD, EDX were Na-fluorophlogopite, ${beta}$-spoduemen and ${alpha}$-cordierite, and the crystallization condition of these crystals was varied with chemical composition, thermal history and nucleation agents. The thermal, chemical properties of prepared samples were excellent. |
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