Effect Of B2O3 And P2O5 on Fluorosilicic Mica Glass-Ceramic Sintering Process

被引：2
|
作者：
Wu, S. [1 ]
Lv, X. [1 ]
Zhang, M. [1 ]
Chen, Y. -J. [1 ]
Zhao, R. -N. [1 ]
机构：
[1] Fourth Mil Med Univ, Dept Gen Dent & Emergency, Sch Stomatol, Xian 710032, Shaanxi, Peoples R China
来源：
SCIENCE OF SINTERING | 2010年 / 42卷 / 03期
关键词：
Fluorosilicic Mica; Sinterability; P2O5; B2O3; FLUORMICA GLASS; CRYSTALLIZATION;
D O I：
10.2298/SOS1003329W
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
To study the effect of B2O3 and P2O5 on fluorosilicic mica glass-ceramic sintering process, six sets of K2O-MgO-SiO2-F glasses were prepared by using B2O3 and P2O5 as sintering aid, respectively. Green bodies of the glass powder were formed by gel casting and sintered at 800, 850, 900, 950, 1000 degrees C for 6 hours, resectively. The sintering and crystallization behavior were studied by thermal shrinkage, X-ray diffraction and SEM. The results showed that the shrinkage rate of the glass with 2wt% B2O3 and P2O5 was highest, while the rate of the glass with 5w1% P2O5 was lowest. An additional crystal other than fluorosilicic mica was precipitated in the glass ceramics generated by sintering of glass powder. The present results confirmed that the glass powder of pure K2O-MgO-SiO2-F system had poor sinterability, while glass powder with minor addition of P2O5 and/or B2O3 showed good sinterability. This result was also verified by SEM.
引用
收藏
页码：329 / 335
页数：7
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