Comparison of fluor-mica glass-ceramics made by melt-casting and sintering methods
10.3969/j.issn.1001-3733.2009.06.14
- VernacularTitle:熔融铸造法及烧结法氟云母玻璃陶瓷性能的比较
- Author:
Shun WU
;
Huiming HE
;
Fang HUANG
;
Lixin GAO
;
Feng LI
;
Wei ZHAO
- Publication Type:Journal Article
- Keywords:
Fluoro- mica glass ceramic;
Melt- casting;
Sintering
- From:
Journal of Practical Stomatology
2009;25(6):824-827
- CountryChina
- Language:Chinese
-
Abstract:
Objective: To study the effects of the melt casting and the sintering methods on the machinability and other characteristics of K_2O-MgO-MgF_2-SiO_2 glass-ceramics. Methods: X-ray diffraction(XRD) and scanning electron microscopy (SEM)were used to examine the main crystal and the microstructure of the glass ceramics of the same composition which were made by melt casting and sintering methods, respectively. The transmissivity, flexural strength and brittleness index were observed respectively. Results: The glass ceramics made by two different methods have the same crystal, KMg_(2.5)Si_4O_(10)F_2, while the specimen prepared by the sintering method had lower transmissivity,better machinability and mechanical properties due to the higher mica volume percent. Conclusion; For production of fluoro-mica glass ceramics, sintering method has superiority compared to melt-casting method.
