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Explosive Consolidation of (Bi, Pb)-Sr-Ca-Cu-0 Superconductor Powders

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Abstract

Superconducting (2212 phase) Bi-Sr-Ca-Cu-0 (BSCCO) and BSCCO-Ag composites were explosively consolidated in silver tubing and then drawn and rolled into tapes. These silver-sheathed tapes were then subjected to repeated cycles of pressing and heat treatment, which resulted in enhanced texturing and grain growth and a subsequent increase in critical current density (Jc). The effect of Ag powder additions to the superconducting powder further increased texturing and Jc, with optimal properties occurring with 10 vol.% silver powder additions. Scanning electron microscopy indicated that grain alignment increased and grain structure became refined after the thermomechanical treatment. X-ray diffraction studies indicated that grain orientation and conversion of 2212 phase to 2223 phase are improved when explosive consolidation is introduced before the drawing step in the powder-in-tube process.

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Authors and Affiliations

  1. Materials and Metallurgical Engineering Department, New Mexico Institute of Mining and Technology, 87801, Socorro, NM

    H. Thomas & O. T. Inal

  2. Energy Technology Division, Argonne National Laboratory, 60439, Argonne, IL

    U. Balachandran

Authors
  1. H. Thomas
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  2. O. T. Inal
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  3. U. Balachandran
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Thomas, H., Inal, O.T. & Balachandran, U. Explosive Consolidation of (Bi, Pb)-Sr-Ca-Cu-0 Superconductor Powders. J. Electron. Mater. 24, 1887–1892 (1995). https://doi.org/10.1007/BF02653004

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  • DOI: https://doi.org/10.1007/BF02653004

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