Near net shape processing of RE-Ba-Cu-O bulk superconductor by machining binder-added precursors

M. Fujikura, S. Nariki, Naomichi Sakai, I. Hirabayashi, Masato Murakami

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Several practical applications of melt-textured bulk superconductors require the complex-shaped products such as curved, ring-shaped, and drilled blocks rather than simple shaped pellets. In general, complex-shaped bulk products are prepared by machining melt-grown massive blocks. However, melt-textured bulks are often damaged when they are mechanically machined. With the aim of reducing such damages, we have investigated the preparation of the complex-shaped bulk superconductors by previously machining the precursors compacted with organic binders. The mixed powders of Y123 and Y211 were pressed into pellets, for which the organic binder was added are machined into complex-shaped bodies. After removal of the organic components, melt-processing was performed in air, which led to a reproducible fabrication of complex-shaped bulk products. The superconducting properties were not degraded with this process.

Original languageEnglish
Pages (from-to)527-531
Number of pages5
JournalPhysica C: Superconductivity and its Applications
Volume426-431
Issue numberI
DOIs
Publication statusPublished - 2005 Oct 1

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Keywords

  • Binder
  • Bulk superconductor
  • Melt-processing
  • Y-Ba-Cu-O

ASJC Scopus subject areas

  • Condensed Matter Physics

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