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The stability of high-T c phase in Bi1.6Pb0.4Sr2Ca2Cu3Oz compounds prepared by hot isostatic pressing

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Abstract

By using a sequence of hot isostatic pressing (HIP) and intermediate cold pressing, it has been possible to produce high-density Bi-based superconductors containing almost 100% high-Tc 2223 phase, without any post-fabrication heat treatment. The X-ray data showed no decomposition of high-Tc phase in hot isostatically pressed Bi-based superconductors. By using this technique, Bi1.6Pb0.4Sr2Ca2Cu3Oz (where Z≈10) superconductors could be densified to 6.06 g cm−3 at an HIP temperature of 850 °C, and at an HIP temperature of 870 °C the density was close to 6.15 g cm−3. These densities could be compared with about 3 to 4 g cm−3 obtained for conventionally sintered compounds. X-ray diffraction data at various stages of fabrication, microstructure and electrical resistivity data are presented.

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Authors and Affiliations

  1. Department of Materials Science and Mechanics, Michigan State University, 48824, East Lansing, MI, USA

    J. M. Yoo & K. Mukherjee

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  1. J. M. Yoo
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  2. K. Mukherjee
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Yoo, J.M., Mukherjee, K. The stability of high-T c phase in Bi1.6Pb0.4Sr2Ca2Cu3Oz compounds prepared by hot isostatic pressing. J Mater Sci 28, 2361–2365 (1993). https://doi.org/10.1007/BF01151666

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  • DOI: https://doi.org/10.1007/BF01151666

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