EQUILIBRIUM PHASE-DIAGRAM FOR THE SYSTEM PBO-CAO-CUO

被引：45

作者：

KITAGUCHI, H

TAKADA, J

ODA, K

MIURA, Y

机构：

[1] Department of Applied Chemistry, Faculty of Engineering, Okayama University

来源：

JOURNAL OF MATERIALS RESEARCH | 1990年 / 5卷 / 05期

关键词：

D O I：

10.1557/JMR.1990.0929

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In order to obtain essential information on the formation process of the high-Jc phase in the Bi, Pb-Sr-Ca-Cu-O system, phase equilibria in the system PbO-CaO-CuO have been studied, mainly by x-ray diffraction analysis and thermal analysis. Temperature versus composition diagrams were established for the systems PbO-CuO(Cu20) and PbO(Pb02)-CaO in air. Three invariant points were detected in these systems: a eutectic reaction (PbO + Ca2Pb04 = L) at 847 ± 6 °C, a peritectic reaction (Ca2Pb04 = L + CaO) at 980 ± 2 °C, and a eutectic reaction (PbO + CuO = L) at 789 ± 3 °C. For the system PbO(Pb02)-CaO-CuO, subsolidus phase equilibrium in air was established. The liquidus was also examined at 780, 800, and 820 °C, and a ternary (Pb0-Ca2Pb04-Cu0) eutectic point was detected at 772 ± 6 °C. © 1990, Materials Research Society. All rights reserved.

引用

页码：929 / 931

页数：3

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