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Solid State Phase Formation in the Bi2O3-PbO-CaO System

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Abstract

Following our previous research, this work is dedicated to the study of phase formation in the subsolidus domain of the Bi2O3-PbO-CaO system.

Former investigations performed by DTA/TGA and XRD have pointed out that under non-isothermal conditions only the formation of binary compounds occurs. Under such conditions these compounds could be non-equilibrium phases.

In order to establish the conditions of formation of equilibrium phases, a study of the Bi2O3-PbO-CaO system, in isothermal conditions, was carried out. The results obtained in isothermal conditions have confirmed the presence of Bi2O3-rich solid solutions and Ca2PbO4 as main equilibrium phases. An attempt to represent the phase relations of the mentioned system at 700°C should be equally mentioned.

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Authors and Affiliations

  1. Institute of Physical Chemistry, Romanian Academy, 202, Spl. Independentei, 77208, Bucharest

    A. Brăileanu, M. Zaharescu & D. Crişan

  2. Faculty of Chemistry, Department of Physical Chemistry, University of Bucharest, 13 Blv. Republicii, Bucharest, Romania

    E. Segal

Authors
  1. A. Brăileanu
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  2. M. Zaharescu
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  3. D. Crişan
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  4. E. Segal
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Brăileanu, A., Zaharescu, M., Crişan, D. et al. Solid State Phase Formation in the Bi2O3-PbO-CaO System. Journal of Thermal Analysis and Calorimetry 56, 125–130 (1999). https://doi.org/10.1023/A:1010199728644

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  • DOI: https://doi.org/10.1023/A:1010199728644

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