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Journal of the Korean Ceramic Society 1991;28(9): 683. |
| ZnO-P$_2$O$_5$ 계 유리의 결정화 기구에 관한 연구 |
| 박용완, 연석주 |
| 한양대학교 공과대학 |
| Crystallization Mechanism in ZnO-P2O5 System Glass |
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| ABSTRACT |
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ZnO-P2O5 system glass containing 45 to 60 mol% ZnO has been melted at 120$0^{circ}C$ and crystallized through heat treatment. Each condition of crystallization was determined by measurement of dilatometric softening point and DTA. The principal crystalline phase was identified as zinc metaphosphate [Zn(PO3)2] in the glasses containing 45~55 mol% ZnO and zinc pyrophosphate (Zn2P2O7) in the sample of 60 mol% ZnO with X-ray diffraction patterns. The crystalline mechanism was investigated by XRD and SEM. As the results, the specimens containing 50~60% ZnO showed the existence of oriented structure due to one-dimensional crystal growth. |
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