Influence of Ag and Ag(In) alloy on Y-Ba-Cu-O equilibrium diagram around the Y-123 superconducting phase

G. A. Costa, E. A. Franceschi, P. Mele

研究成果: Conference article

3 引用 (Scopus)

抜粋

We studied the chemical compatibility of Ag, Ag(In) alloy, Y2BaCuO5 (the so-called Y-211 green phase) and YBa2Cu3O7-δ (Y-123) phase in order to check if better grain growth and alignment with minimum contamination were possible during the Y-123 melt texturing. We demonstrate that the addition of silver to Y-123 always led to an enhanced texture. The typical microstructure of the composite Y-123 plus Y-211 (that is believed essential for high critical currents in these High Tc superconductors) was not disturbed by addition of silver up to 7.5 wt%, while higher concentrations of metal led to a degradation of the texture. DTA-TG analysis was used to investigate the influence of Ag and Ag(In) alloy on the Y-Ba-Cu-O equilibria around the Y-123 phase. We found a very unexpected thermal behaviour, similar to an eutectic equilibrium, when the silver concentration was increased to 35 wt%. We believe that this effect was essentially due to the increasingly higher concentration of silver that could react with the secondary phases present in the melt.

元の言語English
ページ(範囲)539-549
ページ数11
ジャーナルJournal of Thermal Analysis and Calorimetry
61
発行部数2
DOI
出版物ステータスPublished - 2000 1 1
外部発表Yes

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry

フィンガープリント Influence of Ag and Ag(In) alloy on Y-Ba-Cu-O equilibrium diagram around the Y-123 superconducting phase' の研究トピックを掘り下げます。これらはともに一意のフィンガープリントを構成します。

  • これを引用