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Thermal and Microstructural Analysis of the Y–Ba–Cu–O/Ag Equilibrium Around the Critical Composition YBa2Cu3Ox/Ag 35 mass%

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Abstract

We studied the Y–Ba–Cu–O/Ag equilibrium diagram in oxygen atmosphere around the composition YBa2Cu3Ox/Ag35 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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Authors and Affiliations

  1. INFM and Dipartimento di Chimica e Chimica Industriale, Università di Genova, Via Dodecaneso 31, I-16146, Genova, Italy

    G. A. Costa & P. Mele

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  1. G. A. Costa
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  2. P. Mele
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Costa, G.A., Mele, P. Thermal and Microstructural Analysis of the Y–Ba–Cu–O/Ag Equilibrium Around the Critical Composition YBa2Cu3Ox/Ag 35 mass%. Journal of Thermal Analysis and Calorimetry 66, 17–25 (2001). https://doi.org/10.1023/A:1012462926678

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  • DOI: https://doi.org/10.1023/A:1012462926678

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