DIFFUSION OF OH- DURING HYDRATION OF YBA2CU3O7-Y BY EXPOSING TO WATER-VAPOR

被引：10

作者：

IKUMA, Y ^{[1
]}

YOSHIMURA, M ^{[1
]}

KABE, S ^{[1
]}

机构：

[1] TOKYO INST TECHNOL,ENGN MAT RES LAB,YOKOHAMA,KANAGAWA 227,JAPAN

来源：

JOURNAL OF MATERIALS RESEARCH | 1990年 / 5卷 / 01期

关键词：

D O I：

10.1557/JMR.1990.0017

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The hydration of YBa2Cu3O7- y in water vapor was investigated at various values of y and at two different pH2O by measuring the weight of the specimen. The reaction was relatively insensitive to the values of y and was extensive in the water vapor pressure of 2.7 kPa at room temperature and 140 °C. This was due to the decomposition of YBa2Cu3O7-y by reacting with H2O. The weight gain was also detected in the water vapor pressure of 270 Pa. The weight gain under lower water vapor pressure was supposed to be controlled by diffusion of OH- in YBa2Cu3O7-y. The diffusion coefficient calculated from the measurement was compared favorably with the oxygen diffusion coefficient. © 1990, Materials Research Society. All rights reserved.

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页码：17 / 21

页数：5

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