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Mechanical behavior of MgO-whisker reinforced (Bi, Pb)2Sr2Ca2Cu3Oy high-temperature superconducting composite

Published online by Cambridge University Press:  31 January 2011

Y. S. Yuan ,
M. S. Wong  and
S. S. Wang
Y. S. Yuan
Affiliation:
Department of Mechanical Engineering, and Texas Center for Superconductivity, University of Houston, Houston, Texas 77204–4792
M. S. Wong
Affiliation:
Department of Mechanical Engineering, and Texas Center for Superconductivity, University of Houston, Houston, Texas 77204–4792
S. S. Wang
Affiliation:
Department of Mechanical Engineering, and Texas Center for Superconductivity, University of Houston, Houston, Texas 77204–4792
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Abstract

The inherently weak mechanical properties of bulk monolithic high-temperature superconductors (HTS) have been a concern. Properly selected reinforcements in fiber and whisker forms have been introduced to the HTS ceramics to improve their mechanical properties. In this paper, mechanical behavior of a MgO-whisker reinforced Pb-doped Bi-2223 (BPSCCO) HTS composite fabricated by a solid-state processing method is studied. The (MgO)w/BPSCCO HTS composite has been shown to exhibit excellent superconducting properties. Elastic properties, strengths, and notched fracture toughnesses of both the monolithic BPSCCO and the (MgO)w/BPSCCO HTS composite are investigated. Detailed mechanical properties are reported for the first time for the (MgO)w/BPSCCO HTS composite. Mechanisms of strengthening and toughening in the MgO-whisker-reinforced HTS composite are also discussed.

Type
Articles
Information
Journal of Materials Research , Volume 11 , Issue 7 , July 1996 , pp. 1645 - 1652
Copyright
Copyright © Materials Research Society 1996

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