Role of MnO on the mullitization behavior of Al2O3-SiO2 gels

被引：19
|
作者：
Da Silva, MGF [1 ]
机构：
[1] Univ Aveiro, Dept Engn Ceram & Vidro, P-3800 Aveiro, Portugal
来源：
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY | 1998年 / 13卷 / 1-3期
关键词：
mullite; MnO; crystal structure; electronic paramagnetic resonance (EPR); sol-gel chemistry;
D O I：
10.1023/A:1008652129890
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：
Gels were synthesized from solutions of tetraethylorthosilicate (TEOS) and aluminium nitrate (with and without manganese nitrate). The structural evolution of the gels as a function of manganese content and heat-treatment temperature was studied by visible spectrophotometry (VIS), electron paramagnetic resonance (EPR), X-ray diffraction (XRD) and scanning electron microscopy (SEM). The results show that the presence of manganese can induce mullitization at lower temperatures. However, the effect of manganese depends on its content and how it enters into the mullite structure.
引用
收藏
页码：987 / 990
页数：4
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