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

页码：147 / 153

页数：7

共 30 条

[1]

BELETSKII MS, 1959, RUSS J INORG CHEM, V4, P441

[2] THERMODYNAMIC PROPERTIES OF KAIO2 [J].

BEYER, RP ;

FERRANTE, MJ ;

BROWN, RR .

JOURNAL OF CHEMICAL THERMODYNAMICS, 1980, 12 (10) :985-991

[3]

BROWNMILLER LT, 1935, AM J SCI, V29

[4]

BRUMAKIN E, 1979, RUSS J INORG CHEM, V23, P1868

[5] CALCULATION OF A PHASE-DIAGRAM FOR THE LIO0.5-ALO1.5 SYSTEM [J].

BYKER, HJ ;

ELIEZER, I ;

ELIEZER, N ;

HOWALD, RA .

JOURNAL OF PHYSICAL CHEMISTRY, 1979, 83 (18) :2349-2355

[6] HIGH-PRESSURE-HIGH-TEMPERATURE SYNTHESES .3. DIRECT SYNTHESES OF NEW HIGH-PRESSURE FORMS OF LIALO2 AND LIGAO2 AND POLYMORPHISM IN LIMO2 COMPOUNDS (M=B,AL,GA) [J].

CHANG, CH ;

MARGRAVE, JL .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1968, 90 (08) :2020-&

[7]

DEISEROTH HJ, 1973, Z ANORG ALLG CHEM, V402, P201, DOI 10.1002/zaac.19734020211

[8] DIRECT SYNTHESIS OF BINARY K-BETA-ALUMINA AND K-BETA''-ALUMINA .1. PHASE-RELATIONS AND INFLUENCE OF PRECURSOR CHEMISTRY [J].

DEKROON, AP ;

SCHAFER, GW ;

ALDINGER, F .

CHEMISTRY OF MATERIALS, 1995, 7 (05) :878-887

[9]

DEKROON AP, 1996, THESIS U STUTTGART S, V34

[10]

DMITRUK BF, 1989, UKR KHIM ZH+, V55, P227

← 1 2 3 →