Phase equilibria around the superconducting phase in the BaO-Y2 O3-CuO system

被引：0

作者：

Osamura, Kozo ^{[1
]}

Zhang, Wei ^{[1
]}

Yamashita, Takashi ^{[1
]}

Ochiai, Shojiro ^{[1
]}

Predel, Bruno ^{[1
]}

机构：

[1] Kyoto Univ, Japan

来源：

Zeitschrift fuer Metallkunde/Materials Research and Advanced Techniques | 1988年 / 79卷 / 11期

关键词：

Barium Compounds--Phase Diagrams - Ceramic Materials--Phase Diagrams - Microscopic Examination--Scanning Electron Microscopy - Oxides--Phase Diagrams - X-Ray Analysis;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

To clarify the phases equilibrating with the superconducting Ba2YCu3O6+x phase, a metallographical investigation has been performed. Two isothermal sections at 1173 and 1223 K in air have been precisely determined. At the intermediate temperatures, two univariant reactions have been deduced to occur as given by the reaction formula: L + BaY2CuO5⇔Ba2YCu3O6+x + CuO and Ba8YCu4O16-d + Ba2YCu3O6+x⇔BaY2CuO5 + BaCuO2. Using the reaction sequence diagram, the phase diagram is discussed.

引用

页码：693 / 695

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