HOT DEFORMATION OF YBA2CU3O7-DELTA AND COMPOSITE YBA2CU3O7-DELTA/AG

被引：6

作者：

HENDRIX, BC ^{[1
]}

ABE, T ^{[1
]}

BOROFKA, JC ^{[1
]}

WANG, PC ^{[1
]}

TIEN, JK ^{[1
]}

机构：

[1] UNIV TEXAS,STRATEG MAT RES & DEV LAB,AUSTIN,TX 78712

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 1993年 / 76卷 / 04期

关键词：

D O I：

10.1111/j.1151-2916.1993.tb05327.x

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The response of ceramic superconductors and ceramic composites to compressive stresses at high temperatures has been examined. Monolithic YBa2Cu3O7-delta and composite YBa2Cu3O7-delta/Ag were tested at constant true strain rates from 10(-6) to 10(-3) s-1 at temperatures from 800-degrees to 950-degrees-C. Fine-grained monolithic YBa2Cu3O7-delta appears to have a regime of superplastic deformation between temperatures of 850-degrees and 950-degrees-C at strain rates from 10(-6) to 10(-4) s-1. The addition of 20 vol% Ag to a coarser-grained material enhances the ductility of the ceramic and lowers the How stress by a factor of 3 to 10. However, there is no evidence of superplasticity in the composite material in the range of temperature and strain rate where it was tested.

引用

页码：1008 / 1010

页数：3

共 17 条

[1]

CHEN IW, 1987, J AM CERAM SOC, V70, pC388, DOI 10.1111/j.1151-2916.1987.tb04929.x

[2] DEVELOPMENT OF SUPERPLASTIC STRUCTURAL CERAMICS [J].

CHEN, IW ;

XUE, LA .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1990, 73 (09) :2585-2609

[3]

DIETER G, 1976, MECH METALLURGY, P75

[4]

Hendrix B. C., 1988, Superconductivity and Its Applications. Proceedings of the Second Annual Conference on Superconductivity and Applications, P94

[5]

Hendrix B. C., 1988, Processing and Applications of High Tc Superconductors. Proceedings of the Norteast Regional Meeting of the Metallurgical Society, P169

[6]

HENDRIX BC, 1989, HIGH TEMPERATURE SUP, P365

[7] HIGH-TEMPERATURE EXTRUSION BEHAVIOR OF FINE-GRAIN ZRO2 [J].

KELLETT, BJ .

JOURNAL OF MATERIALS RESEARCH, 1990, 5 (10) :2165-2171

[8] HIGH-TEMPERATURE EXTRUSION BEHAVIOR OF A SUPERPLASTIC ZIRCONIA-BASED CERAMIC [J].

KELLETT, BJ ;

CARRY, C ;

MOCELLIN, A .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1990, 73 (07) :1922-1927

[9] SUPERPLASTICITY IN CERAMICS [J].

MAEHARA, Y ;

LANGDON, TG .

JOURNAL OF MATERIALS SCIENCE, 1990, 25 (05) :2275-2286

[10]

Nakamura N., 1988, Processing and Applications of High Tc Superconductors. Proceedings of the Norteast Regional Meeting of the Metallurgical Society, P17

← 1 2 →