Concentration effect of Cs+ additive on the γ-Al2O3-to-α-Al2O3 phase transition

被引：17

作者：

Okada, K ^{[1
]}

Hattori, A ^{[1
]}

Kameshima, Y ^{[1
]}

Yasumori, A ^{[1
]}

机构：

[1] Tokyo Inst Technol, Dept Met & Ceram Sci, Meguro Ku, Tokyo 1528552, Japan

来源：

MATERIALS LETTERS | 2000年 / 42卷 / 03期

关键词：

gamma-Al2O3; phase transition; Cs+ addition; amount dependence;

D O I：

10.1016/S0167-577X(99)00179-2

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effect of Cs+ additive on the gamma-Al2O3-to-alpha-Al2O3 phase transition was investigated as a function of the Cs+ concentration by powder X-ray diffraction and specific surface area (S-A) measurements. The addition of Cs+ increasingly retarded the gamma-to-alpha phase transition with increasing Cs+ concentration, reading a maximum at 5% addition, at which the transition temperature was increasing by about 200 degrees C. This Cs+ concentration corresponds to an amount of cation which would almost fully cover the surface of the gamma-Al2O3 grains. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：175 / 178

页数：4

共 8 条

[1] Thermally stable aluminas for high temperature applications [J].