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

G. A. Costa; P. Mele

doi:10.1023/A:1012462926678

Thermal and microstructural analysis of the Y-Ba-Cu-O/Ag equilibrium around the critical composition YBa₂Cu₃O_x/Ag 35 mass%

G. A. Costa, P. Mele

Research output: Contribution to journal › Conference article › peer-review

2 Citations (Scopus)

Abstract

We studied the Y-Ba-Cu-O/Ag equilibrium diagram in oxygen atmosphere around the composition YBa₂Cu₃O_x/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 language	English
Pages (from-to)	17-25
Number of pages	9
Journal	Journal of Thermal Analysis and Calorimetry
Volume	66
Issue number	1
DOIs	https://doi.org/10.1023/A:1012462926678
Publication status	Published - 2001
Externally published	Yes
Event	22nd Italian Congress on Calorimetry Thermal Analysis and Chemical Thermodynamics (AICAT-GICAT Meeting 2000) - Camogli, Italy Duration: 2001 Dec 15 → 2001 Dec 31

Keywords

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

ASJC Scopus subject areas

Condensed Matter Physics
Physical and Theoretical Chemistry

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

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.",

keywords = "Mechanical segregation, Silver, Superconductor, Y-Ba-Cu-O equilibrium diagram",

author = "Costa, {G. A.} and P. Mele",

note = "Funding Information: The Italian Ministry of Universities (MURST) and the National Institute for the Physics of Matter (INFM) are gratefully acknowledged for the financial support. Dr. A. Martinelli and Prof. Th. Wolf are gratefully acknowledged for the helpful discussions. Copyright: Copyright 2007 Elsevier B.V., All rights reserved.; 22nd Italian Congress on Calorimetry Thermal Analysis and Chemical Thermodynamics (AICAT-GICAT Meeting 2000) ; Conference date: 15-12-2001 Through 31-12-2001",

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AU - Costa, G. A.

AU - Mele, P.

N1 - Funding Information: The Italian Ministry of Universities (MURST) and the National Institute for the Physics of Matter (INFM) are gratefully acknowledged for the financial support. Dr. A. Martinelli and Prof. Th. Wolf are gratefully acknowledged for the helpful discussions. Copyright: Copyright 2007 Elsevier B.V., All rights reserved.

PY - 2001

Y1 - 2001

N2 - 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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KW - Silver

KW - Superconductor

KW - Y-Ba-Cu-O equilibrium diagram

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