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Processing of Dense, Fine Grained YBa2Cu3Ox Ceramics Using a Spray-Drying Technique

  • Naomichi Nakamura
  • Masayoshi Ishida
  • Yoshihiro Koseki
  • Michio Shimotomai
Conference paper

Abstract

High-Tc superconductor YBa2 Cu3 Ox has been synthesized using a spray-drying technique with special reference to the influence or the purity of the starting reagents on microstructures and superconducting properties. Sintering is enhanced and high density is easily obtained with ultrapure reagents of acetic salts. Doping with Sr to examine the impurity effects of reagents of conventional grade has resulted in porous microstructures. Magnetic field dependences of magnetization and critical current density of the ceramics are significantly dependent on the grade of the starting reagents.

Keywords

Magnetization Curve Critical Current Density Magnetic Field Dependence Porous Microstructure Acetic Salt 
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Copyright information

© Springer Japan 1989

Authors and Affiliations

  • Naomichi Nakamura
    • 1
  • Masayoshi Ishida
    • 1
  • Yoshihiro Koseki
    • 1
  • Michio Shimotomai
    • 1
  1. 1.New Materials Research Center, High-Technology Research LaboratoriesKawasaki Steel CorporationChiba, 260Japan

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