Formation of YBa2Cu3Ox by peritectic reaction

Jun Takada, Hitoshi Kitaguchi, Akiyoshi Osaka, Yoshinari Miura, Katsuaki Takahashi, Yasunori Ikeda, Mikio Takano, Yoshichika Bando, Yoichi Tomii, Naoichi Yamamoto, Yoshio Oka

Research output: Contribution to journalArticlepeer-review


The decomposition process on heating and the crystallization process from a liquid on cooling for high-Tc superconductor YBa2Cu3Ox(x-7) have been studied through thermal analysis, microstructural observation, compositional and X-ray analyses. On heating, YBa2Cu3Oxdecomposes at 993°C in air to Y2BaCuO5 and a liquid due to an incongruent melting. On cooling, YBa2Cu3Ox crystallizes around the primary crystal Y2BaCuO5 from a liquid as a result of a peritectic reaction. YBa2Cu3Ox was also found to grow markedly in the sample cooled slowly to 760°C from 1200°C.

Original languageEnglish
Pages (from-to)583-589
Number of pages7
JournalJournal of the Japan Society of Powder and Powder Metallurgy
Issue number10
Publication statusPublished - 1987

ASJC Scopus subject areas

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


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