Fabrication condition of transparent OH free sintered silica glass

被引：6

作者：

O, YT ^{[1
]}

Takebe, H ^{[1
]}

Morinaga, K ^{[1
]}

机构：

[1] KYUSHU UNIV, GRAD SCH ENGN SCI, DEPT MAT SCI & TECHNOL, KASUGA, FUKUOKA 816, JAPAN

来源：

JOURNAL OF THE CERAMIC SOCIETY OF JAPAN | 1997年 / 105卷 / 02期

关键词：

silica glass; sintering; infrared spectra; particles size; dehydration; crystallization;

D O I：

10.2109/jcersj.105.171

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：

Green compacts of high-purity silica powders with different particle sizes were formed by slip casting method and pressureless-sintered. Conditions to fabricate transparent silica glasses are presented using diagrams described by sintering-temperature and-time. The variation of linear shrinkage with time reveals that the sintering mechanism at its early stage follows the viscous flow of silica glass particles. The effect of firing schedule on residual OH concentration was studied for transparent sintered silica glasses. A green compact prepared by silica powders with a mean particle size of 1.6 mu m was fired at 1573 K for 3h for dehydration and heated up to 1873 K for densification; this typical fabrication condition results in a transparent sintered silica glass with <1 ppm OH concentration.

引用

页码：171 / 174

页数：4

共 11 条

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