CITRATE SOL-GEL METHOD FOR THE PREPARATION OF BETA BETA''-ALUMINA

被引：16

作者：

CHOY, JH

YOO, JS

HAN, YS

KIM, YH

机构：

[1] KOREA INST SCI & TECHNOL,FINE CERAM MAT LAB,SEOUL,SOUTH KOREA

[2] SEOUL NATL UNIV,MOLEC SCI RES INST,DIV INORGAN MAT,SEOUL 151742,SOUTH KOREA

来源：

MATERIALS LETTERS | 1993年 / 16卷 / 04期

关键词：

Sol-gels - Solid electrolytes;

D O I：

10.1016/0167-577X(93)90169-X

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The concentrations of hydroxide and citrate for sodium, lithium and aluminum ions in an aqueous solution have been theoretically calculated with respect to pH, and their solubility diagram was obtained. The stoichiometric beta/beta'' -alumina with the formula Al11-x/2Lix/2O17Na1+x (x = 0.6) could be prepared from the homogeneous citrate precursors at pH almost-equal-to 6.5. The sol-gel system with Na-Li-Al-C6H8O7-H2O proved to be quite appropriate for achieving the uniform mixing of the reactants on a molecular level by the formation of the m-Al2O3 phase.

引用

页码：226 / 230

页数：5