FORMATION OF THE YBA2CU3O7-DELTA-PHASE DURING MELT PROCESSING

被引：1

作者：

GAUSS, S ^{[1
]}

SCHMELZ, M ^{[1
]}

BESTGEN, H ^{[1
]}

ASSMUS, W ^{[1
]}

机构：

[1] UNIV FRANKFURT,INST PHYS,D-60054 FRANKFURT,GERMANY

来源：

PHYSICA C | 1994年 / 235卷

关键词：

D O I：

10.1016/0921-4534(94)91454-0

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The crystallization behavior of YBa2Cu3O7-delta (123) with additives of Y2BaCuO5 (211), Ag2O and PtO2 was studied by microstructure analysis of samples quenched at intermediate stages of the melt process. The samples were investigated by STEM, XRD and DTA. The peritectic growth of 123 is found to be accomplished by dissolution of 211 in the liquid close to the 123 growth front and reprecipitation of its constituents at the growing interface. A large undercooling is observed being probably due to the presence of solved Ag in the liquid.

引用

页码：461 / 462

页数：2

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