Mechanical Properties of a Lithium Disilicate Strengthened Lithium Aluminosilicate Glass-Ceramic

被引：31
|
作者：
Laczka, Maria [1 ]
Laczka, Karolina [1 ]
Cholewa-Kowalska, Katarzyna [1 ]
Kounga, Alain B. [2 ]
Appert, Christoph [2 ]
机构：
[1] AGH Univ Sci & Technol, PL-30059 Krakow, Poland
[2] Inst Straumann AG, CH-4002 Basel, Switzerland
来源：
JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 2014年 / 97卷 / 02期
关键词：
CRYSTALLIZATION;
D O I：
10.1111/jace.12780
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：
A glass composition in the Li2O-Al2O3-SiO2 (LAS)-ternary phase diagram is presented, which enables the crystallization of Li2Si2O5 as well as LiAlSi2O6 upon a well-defined heat treatment. Li2Si2O5 is the minor crystalline phase in the glass-ceramic and generates through the bulk strengthening of the LAS glass-ceramic. A flexural strength as higher as 400MPa is measured in the proposed glass-ceramic formulation, thus outperforming conventional LAS-glass-ceramics. A combination of the presence of those two crystalline phases of very different mechanical properties and coefficient of thermal expansion as well as the microstructure are believed to contribute largely to the enhancement of the measured properties.
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页码：361 / 364
页数：4
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