Processing of glass-ceramics in theSiO2-Al2O3-B2O3-MgO-CaO-Na2O-(P2O5)-F system via sintering and crystallization of glass powder compacts

被引：27

作者：

Tulyaganov, DU ^{[1
]}

Agathopoulos, S ^{[1
]}

Fernandes, HR ^{[1
]}

Ferreira, JMF ^{[1
]}

机构：

[1] Univ Aveiro, CICECO, Dept Ceram & Glass Engn, P-3810193 Aveiro, Portugal

来源：

CERAMICS INTERNATIONAL | 2006年 / 32卷 / 02期

关键词：

sintering; microstructure-final; glass-ceramics; crystallization;

D O I：

10.1016/j.ceramint.2005.02.006

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：

Glass-ceramics were produced by crystallization of glasses in the SiO2-Al2O3-B2O3-MgO-CaO-N2O-F system. The experimental results showed that bulk glasses are prone to surface crystallization. Hence, crystallization of bulk glasses resulted in non-homogeneous crystalline materials, which comprised relatively coarse crystals. Therefore, processing was realized using (glass-powder compacts. Maximum densification was reached at 700-750 degrees C. This interval is positioned at relatively lower temperatures than those often reported for similar sintered glass-ceramics. Doping with P2O5 improved sintering behaviour and broadened sintering temperature range. Sintering between 750 and 800 degrees C resulted in materials, which exhibited dense crystalline microstructure and the maximum flexural strength. (C) 2005 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

引用

页码：195 / 200

页数：6

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