PHASE-DIAGRAM OF THE BAO-CUO BINARY-SYSTEM

被引：77

作者：

ZHANG, W

OSAMURA, K

OCHIAI, S

机构：

[1] Department of Metallurgy, Kyoto University, Kyoto, 606, Sakyo-ku

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 1990年 / 73卷 / 07期

关键词：

baria; copper oxides; eutectics; phase diagrams; phase transformations;

D O I：

10.1111/j.1151-2916.1990.tb05252.x

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The phase diagram of the BaO‐CuO binary system has been investigated in air and in a mixed gas of Ar + 0.21 atm of O2. The existence of two compounds, BaCuO2 and Ba2CuO3, was confirmed. The phase transition of Ba2CuO3 from an orthorhombic to a tetragonal phase was observed to occur at 1083 K. The lattice constants of the tetragonal Ba2CuO3 phase were determined to be a= 1.2975 nm and b= 0.3992 nm. BaCuO2 was shown to melt incongruently by a synthetic reaction at 1289 K. Furthermore, the existence of two eutectic reactions and a peritectic reaction in the present system was confirmed. Copyright © 1990, Wiley Blackwell. All rights reserved

引用

页码：1958 / 1964

页数：7

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