Lithium Disilicate Glass-Ceramics by Heat Treatment of Lithium Metasilicate Glass-Ceramics Obtained by Hot Pressing

被引：20
|
作者：
Zhang, Hui [1 ]
He, Zhilong [1 ]
Zhang, Yaming [1 ]
Jing, Wenjia [1 ]
Wang, Bo [1 ]
Yang, Jianfeng [1 ]
机构：
[1] Xi An Jiao Tong Univ, State Key Lab Mech Behav Mat, Xian 710049, Peoples R China
来源：
JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 2015年 / 98卷 / 12期
基金：
中国博士后科学基金; 中国国家自然科学基金;
关键词：
FRACTURE-TOUGHNESS; HIGH-PRESSURE; MECHANICAL-PROPERTIES; FLEXURAL STRENGTH; MICROSTRUCTURE; CRYSTALLIZATION; P2O5; DENSIFICATION;
D O I：
10.1111/jace.13950
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：
Lithium disilicate glass-ceramics are widely used as dental ceramics due to their machinability and translucency. In this study, lithium disilicate glass-ceramic was fabricated through heat treatment of lithium metasilicate glass-ceramics obtained by hot pressing of glass powder composed of SiO2-Li2O-P2O5-ZrO2-Al2O3-K2O-CeO2 at low temperature. The crystalline phase, microstructure, and mechanical properties were investigated. The results indicated that lithium metasilicate glass-ceramic with a relative density of higher than 99% was obtained after hot pressing, and glass-ceramic with interlocked rod-like Li2Si2O5 crystals and good flexural strength (338 +/- 20 MPa) was successfully obtained through heat treatment. The two-step method was believed to be feasible in tailoring the microstructure and mechanical properties of lithium disilicate glass-ceramics.
引用
收藏
页码：3659 / 3662
页数：4
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