Effect of P2O5 on the Nonisothermal Sinter-Crystallization Process of a Lithium Aluminum Silicate Glass

被引：12

作者：

Soares, Viviane Oliveira ^{[1
]}

Zanotto, Edgar Dutra ^{[2
]}

机构：

[1] Univ Estadual Maringa, Dept Ciencias, BR-87360000 Goioere, PR, Brazil

[2] Univ Fed Sao Carlos, Lab Mat Vitreos, Dept Engn Mat, BR-13565905 Sao Carlos, SP, Brazil

来源：

INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY | 2016年 / 13卷 / 05期

基金：

巴西圣保罗研究基金会;

关键词：

sinter; sintering; glass-ceramics; crystals; crystallization; CERAMICS; NUCLEATION;

D O I：

10.1111/ijac.12540

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：

Dense (similar to 98.5%), lithium aluminum silicate glass-ceramics were obtained via the sinter-crystallization of glass particle compacts at relatively low temperatures, that is, 790-875 degrees C. The effect of P2O5 on the glass-ceramics' sinter-crystallization behavior was evaluated. We found that P2O5 does not modify the surface crystallization mechanism but instead delays the crystallization kinetics, which facilitates viscous flow sintering. Our glass-ceramics had virgilite (LixAlxSi3-xO6; 0.5 < x < 1), a crystal size <1 m, and a linear thermal expansion coefficient of 2.1 x 10(-6)degrees C-1 in the temperature range 40-500 degrees C. The overall heat treatment to obtain these GCs was quite short, at similar to 25 min.

引用

页码：948 / 955

页数：8

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