GRAIN-GROWTH OF HIGH T(C) YBA2CU3O7-X

被引：8

作者：

RICHARDS, LE

HOFF, HA

AGGARWAL, PK

机构：

[1] Materials Science and Technology Division, Naval Research Laboratory, Washington, DC

来源：

JOURNAL OF ELECTRONIC MATERIALS | 1993年 / 22卷 / 10期

关键词：

GRAIN GROWTH; GRAIN SIZE; LOGNORMAL; RATE CONSTANT; OXYGENATION;

D O I：

10.1007/BF02818066

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Grain growth during sintering of the polycrystalline high onset temperature superconductor YBa2Cu3O7-x has been examined by measuring grain sizes at various temperatures for different times above 900-degrees-C. The grain size distribution is found to be predominately lognormal after some sintering time. The mean grain size increases with both temperature and time. The standard deviation of the grain size distribution increases with temperature, but appears to be independent of time. The grain growth law may have an exponent of five. The grain growth rate may be affected by the grain size of the calcined powder.

引用

页码：1233 / 1239

页数：7

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