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  • 1 Romanian Academy Institute of Physical Chemistry 202 Spl. Independentei 77208 Bucharest 202 Spl. Independentei 77208 Bucharest
  • 2 University of Bucharest Faculty of Chemistry, Department of Physical Chemistry 13 Blv. Republicii Bucharest Romania 13 Blv. Republicii Bucharest Romania
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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 700C should be equally mentioned.

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