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High-Tc Ceramic Superconductors Through Oxidation of Mechanically Alloyed Y-Ba-Cu and Bi-Sr-Ca-Cu Powders

  • Shin-ichi Murasaki
  • Satoru Taniguchi
  • Uichiro Mizutani
  • Motohiro Suganuma
  • Yuh Yamada
Conference paper

Abstract

The high-Tc ceramic superconductors YBa2Cu3Oy and BiSrCaCu2Oy are synthesized through oxidation of master alloy powders produced by mechanical alloying. The effects of the milling time and subsequent oxidation conditions on the formation of the superconducting phase are studied. A homogeneous distribution of the constituent elements Y, Ba and Cu in YBa2Cu3 master alloy powders is achieved within the resolution of 0.1–0.3 μm after mechanical alloying for 36h in Ar gas atmosphere. Preliminary results for the BiSrCacu2Oy system are also reported.

Keywords

Mechanical Alloy Alloy Powder Mill Time Sinter Technique Aichi Prefectural 
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References

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Copyright information

© Springer Japan 1989

Authors and Affiliations

  • Shin-ichi Murasaki
    • 1
  • Satoru Taniguchi
    • 2
  • Uichiro Mizutani
    • 2
  • Motohiro Suganuma
    • 3
  • Yuh Yamada
    • 4
  1. 1.Nippondenso Technical CollegeAnjo, Aichi, 446Japan
  2. 2.Department of Crystalline Materials ScienceNagoya UniversityChikusa-ku, Nagoya, 464-01Japan
  3. 3.Industrial Research InstituteAichi Prefectural GovernmentHitotsugi-cho, Kariya, 448Japan
  4. 4.National Research Institute for MetalsMeguro-ku, Tokyo, 153Japan

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