Crystallography of potassium aluminate K2O•Al2O3

被引：17
|
作者：
de Kroon, AP [1 ]
Schäfer, GW [1 ]
Aldinger, F [1 ]
机构：
[1] Max Planck Inst Met Forsch, Pulvermet Lab, D-70569 Stuttgart, Germany
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2001年 / 314卷 / 1-2期
关键词：
oxide materials; ceramics; thermal analysis; phase transition;
D O I：
10.1016/S0925-8388(00)01239-1
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The phase transformations of the binary compound K2O . Al2O3 (KAlO2) were investigated to facilitate the construction of K-(Mg)-beta -Al2O3 phase diagrams. At ambient pressure, KAlO2 consists of three different crystalline phases, and in this respect it is similar to LiAlO2 and NaAlO2. Above 1350 degreesC delta -KAlO2 is cubic, between 1350 and 600 degreesC, gamma -KAlO2 is tetragonal, and below 600 degreesC, beta -KAlO2 is orthorhombic. The transition behavior of KAlO2 is compared with that of NaAlO2 and LiAlO2. (C) 2001 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：147 / 153
页数：7
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