Bulk YBCO high-Tc superconductors with uniform and full oxygen content via microwave processing

被引：11

作者：

Binner, JGP ^{[1
]}

Al-Dawery, IAH ^{[1
]}

机构：

[1] Univ Nottingham, Dept Mat Engn & Mat Design, Nottingham NG7 2RD, England

来源：

SUPERCONDUCTOR SCIENCE & TECHNOLOGY | 1998年 / 11卷 / 05期

关键词：

D O I：

10.1088/0953-2048/11/5/002

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The potential for the use of microwave radiation as an alternative energy source for the sintering and annealing of bulk, ceramic high-T-c YBCO superconductors has been investigated with a view to taking advantage of the opportunities presented by this novel heating technique. Microwave heating has been found to offer the possibility of sintering 'from the inside out' due to the nature of the temperature profile developed. As a result, ceramic YBCO bodies measuring 35 mm in diameter by 5 mm thick have been produced with completely uniform and high oxygen content (x = 7 in YBa2Cu3Ox) and densities up to 98% of theoretical. These properties were achieved using total processing times approximately one sixth of those required conventionally. A model for the microwave heating process is proposed.

引用

页码：449 / 457

页数：9

共 18 条

[1]

AHMAD I, 1989, MATER RES SOC S P, V124, P239

[2]

ARAI M, 1995, J AM CERAM SOC, V78, P1974, DOI 10.1111/j.1151-2916.1995.tb08921.x

[3]

ARAI M, 1993, MICROWAVES THEORY AP, V36, P483

[4]

THE POSSIBLE ROLE OF THE PREEXPONENTIAL FACTOR IN EXPLAINING THE INCREASED REACTION-RATES OBSERVED DURING THE MICROWAVE SYNTHESIS OF TITANIUM CARBIDE [J].