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[Study on thermal treatment schedule of leucite microcrystallization to reinforce dental glass ceramics]
Biao Zhang1, Fa-tang Qian, Xing-long Duan
1Comprehensive Dental Department, School of Stomatology, Wuhan University, Wuhan, 430079, China.
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.
