Preparation of mullite powders by sol-gel methods

被引：0

作者：

Jin, XH ^{[1
]}

Gao, L ^{[1
]}

Guo, JK ^{[1
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China

来源：

JOURNAL OF INORGANIC MATERIALS | 2001年 / 16卷 / 03期

关键词：

mullite; sol-gel; XRD; IR;

D O I：

暂无

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：

Superfine Al2O3-SiO2 gel of mullite composition was prepared by a sol-gel method, using TEOS and aluminium chloride hexahydrates as starting materials. Its mullitization process was monitored by DTA, XRD and LR measurements. The as-received gel is a diphasic one, comprising of bayerite and amorphous silica. By going through transition phases of gamma -Al2O3 and Al-Si spinel, this gel transforms to mullite at 1250 degrees C. The mullite powder obtained has a very fine grain size and shows a plate-like morphology.

引用

页码：555 / 558

页数：4

共 18 条

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