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The development of high fracture toughness YBa2Cu3O7−x/Ag composites

Published online by Cambridge University Press:  29 June 2016

Long S. Yeou  and
Kenneth W. White
Long S. Yeou
Affiliation:
Texas Center for Superconductivity at theUniversity of Houston, Department of Mechanical Engineering, University of Houston, Houston, Texas 77204-4792
Kenneth W. White
Affiliation:
Texas Center for Superconductivity at theUniversity of Houston, Department of Mechanical Engineering, University of Houston, Houston, Texas 77204-4792
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Abstract

Microstructural refinement of the YBa2Cu3O7−x/Ag superconductor composite has resulted in a fracture toughness of 3.6 MPa √ms, as measured by single edge notch beam fracture specimens. This represents the highest bulk fracture toughness value published to date for silver compositions near 20%. A combination of grain size and porosity refinement, in addition to control of silver morphology and distribution, permits the development of fracture toughness levels that compare favorably with many structural ceramics such as SiC and Al2O3.

Type
Communications
Information
Journal of Materials Research , Volume 7 , Issue 1 , January 1992 , pp. 1 - 4
Copyright
Copyright © Materials Research Society 1992

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