| 白榴石微晶化增强牙科玻璃陶瓷的热处理温度制度的研究 |
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| 引用本文： | 张飚,钱法汤,段兴龙,吴伯麟.白榴石微晶化增强牙科玻璃陶瓷的热处理温度制度的研究[J].中华口腔医学杂志,2003,38(2):143-146,I004. |
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| 作者姓名： | 张飚 钱法汤 段兴龙 吴伯麟 |
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| 作者单位： | 1. 430079,武汉大学口腔医学院综合科
2. 武汉理工大学材料复合新技术国家重点实验室 |
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| 摘 要： | 目的 探索白榴石微晶化的热处理温度制度。方法 根据白榴石的化学式和K20-Na2O-Al2O3-SiO2系统相图制定原材料配比，在预设的熔融、成核、析晶温度中选择最佳温度；利用偏振光显微镜和x射线衍射分析仪观察样品的形态及显微结构特性。结果 玻璃融熔温度为1600℃，成核温度为1200℃，晶化温度为1500℃；微晶化后的自榴石晶粒约0．8μm，在玻璃基质中分布均匀。结论 按照一定的热处理温度制度。白榴石可以在玻璃中微晶化。
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| 关 键 词： | 白榴石 微晶化 牙科材料 玻璃陶瓷 热处理温度制度 |
Study on thermal treatment schedule of leucite microcrystallization to reinforce dental glass ceramics |
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| ZHANG Biao ,QIAN Fa tang,DUAN Xing long,WU Bo lin. Comprehensive Dental.Study on thermal treatment schedule of leucite microcrystallization to reinforce dental glass ceramics[J].Chinese Journal of Stomatology,2003,38(2):143-146,I004. |
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| Authors: | ZHANG Biao QIAN Fa tang DUAN Xing long WU Bo lin Comprehensive Dental |
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| Institution: | Comprehensive Dental Department, School of Stomatology, Wuhan University, Wuhan, 430079, China. |
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| Abstract: | OBJECTIVE: To explore the thermal treatment schedule of leucite microcrystallization to reinforce dental glass ceramics. METHODS: After component analysis and selection, the raw material were treated by different temperature schedules. The products were analyzed by polaring microscope and X-ray diffractometer to determine the appropriate thermal treatment schedule. RESULTS: The temperature of melting, nuclearing and crystalizing was 1,600 degrees C, 1,200 degrees C and 1,500 degrees C. Leucite microcrystals dispersed in the glass matrix evenly and the size of leucite particle was about 0.8 micro m. CONCLUSION: Leucite can be microcrystalized according to an appropriate thermal treatment schedule. |
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| Keywords: | Dental ceramics Leucite Dental material |
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