The effects of sinter temperature on the crystalline phase and microstructural evolution of lithium disilicate glass-ceramic
10.3969/j.issn.1001-3733.2017.03.008
- VernacularTitle:烧结温度对二硅酸锂玻璃陶瓷析晶和微结构的影响
- Author:
Bin WANG
;
Yun XIAO
;
Qiliang ZUO
- Keywords:
Sinter temperature;
Lithium disilicate glass-ceramic;
Crystallization;
Microstructure
- From:
Journal of Practical Stomatology
2017;33(3):322-326
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To investigate the influence of sinter temperature alteration on the crystalline phase and microstructure of lithium disilicate glass-ceramic.Methods:Samples of lithium disilicate glass-ceramic were heated using the standard two stage heating-schedule at different final temperatures.All samples were observed by X-ray diffractometer (XRD),field emission scanning electron microscope(FESEM) and energy-dispersive X-ray spectroscopy(FE-SEM-EDS) for the evaluation of crystalline phase and microstructural evolution.Results:Crystalline phase and microstructure of ceramic samples showed significant changes during processing at different temperatures,especially at 800 ℃.Samples sintered at 840 ℃ displayed higher crystallinity(P<0.05) and denser microstructure.Conclusion:Temperature control is important in ceramic sintering.800 ℃ and 840 ℃ are the critical temperature points in the crystalline phase and microstructural evolution of lithium disilicate glass-ceramic.
