Thermal and microstructural analysis of the Y-Ba-Cu-O/Ag equilibrium around the critical composition YBa2Cu3Ox/Ag 35 mass%

G. A. Costa, Paolo Mele

Research output: Contribution to journalConference article

2 Citations (Scopus)

Abstract

We studied the Y-Ba-Cu-O/Ag equilibrium diagram in oxygen atmosphere around the composition YBa2Cu3Ox/Ag 35 mass%. We found a high thermal effect: the peritectic decomposition temperature of Y-123 phase is lowered from 1040 to 940°C. We demonstrate here that the nature of the phenomenon is not chemical. We explained it as the result of a mechanical segregation of Y-123 decomposition products from Y-123 phase, performed by silver.

Original languageEnglish
Pages (from-to)17-25
Number of pages9
JournalJournal of Thermal Analysis and Calorimetry
Volume66
Issue number1
DOIs
Publication statusPublished - 2001 Dec 1
Externally publishedYes
Event22nd Italian Congress on Calorimetry Thermal Analysis and Chemical Thermodynamics (AICAT-GICAT Meeting 2000) - Camogli, Italy
Duration: 2001 Dec 152001 Dec 31

Fingerprint

thermal analysis
Decomposition
decomposition
Chemical analysis
Silver
Thermal effects
temperature effects
silver
phase diagrams
Oxygen
atmospheres
oxygen
products
Temperature
temperature
Hot Temperature

Keywords

  • Mechanical segregation
  • Silver
  • Superconductor
  • Y-Ba-Cu-O equilibrium diagram

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry

Cite this

Thermal and microstructural analysis of the Y-Ba-Cu-O/Ag equilibrium around the critical composition YBa2Cu3Ox/Ag 35 mass%. / Costa, G. A.; Mele, Paolo.

In: Journal of Thermal Analysis and Calorimetry, Vol. 66, No. 1, 01.12.2001, p. 17-25.

Research output: Contribution to journalConference article

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abstract = "We studied the Y-Ba-Cu-O/Ag equilibrium diagram in oxygen atmosphere around the composition YBa2Cu3Ox/Ag 35 mass{\%}. We found a high thermal effect: the peritectic decomposition temperature of Y-123 phase is lowered from 1040 to 940°C. We demonstrate here that the nature of the phenomenon is not chemical. We explained it as the result of a mechanical segregation of Y-123 decomposition products from Y-123 phase, performed by silver.",
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