Mechanical Grinding and Reforming Process of the Pb-substituted 2223 Phase

Jun Takada, Masahiro Nagae, Yoshihiro Kusano, Tokuro Nanbav, Mikio Takano

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Mechanical grinding and reforming process of the Pb-substituted 2223 phase has been studied for the monophasic samples with a composition of Bi0.9Pb0.2SrCaCu1.6O2. The 2223 phase changes to ultla-fine powder by full grinding, exhibiting no magnetic response, while the ultra-fine powder and the small 2223 crystals coexist in samples ground for short periods. Some second phases were formed in the ground powder subjected to heating at temperatures between 500° and 800°C. On the other hand, annealing of the bulk samples below 800°C leads to precipitation of the 3321 phase identified as Sr2.5Bi0.5Pb3Ca2CuO2. Precipitation of second phases in the coexistent powder was interpreted by those in ultra-fine powder and bulk samples.

Original languageEnglish
Pages (from-to)396-399
Number of pages4
JournalJournal of the Japan Society of Powder and Powder Metallurgy
Issue number4
Publication statusPublished - 1994
Externally publishedYes

ASJC Scopus subject areas

  • Mechanical Engineering
  • Industrial and Manufacturing Engineering
  • Metals and Alloys
  • Materials Chemistry


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