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
收藏
页码：175 / 178
页数：4
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