Phase Equilibria in the Lead-Magnesium-Niobium-Oxygen System at 1000°C

Pierre Lucas; William Petuskey

doi:10.1111/j.1151-2916.2001.tb00979.x

Phase Equilibria in the Lead-Magnesium-Niobium-Oxygen System at 1000°C

Pierre Lucas, William Petuskey

Molecular Sciences, School of (SMS)

Research output: Contribution to journal › Article › peer-review

15 Scopus citations

Abstract

Phase equilibria in the PbO-MgO-Nb₂O₅ system have been determined at 1000°C and 1 atm. A solid-solution range of the cubic pyrochlore phase was observed and the extent of that domain was determined. This solid solution equilibrates with the surrounding ternary and binary compounds to form a series of diphasic areas. The compatibility relations between all phases were determined except for a small domain where at least six lead niobate phases were stable within a very short range of compositions. The formation of pyrochlore impurities during the processing of Pb(Mg_1/3Nb_2/3)O₃ perovskite is discussed in relation to the phase diagram.

Original language	English (US)
Pages (from-to)	2150-2152
Number of pages	3
Journal	Journal of the American Ceramic Society
Volume	84
Issue number	9
DOIs	https://doi.org/10.1111/j.1151-2916.2001.tb00979.x
State	Published - Sep 2001

ASJC Scopus subject areas

Ceramics and Composites
Materials Chemistry

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abstract = "Phase equilibria in the PbO-MgO-Nb2O5 system have been determined at 1000°C and 1 atm. A solid-solution range of the cubic pyrochlore phase was observed and the extent of that domain was determined. This solid solution equilibrates with the surrounding ternary and binary compounds to form a series of diphasic areas. The compatibility relations between all phases were determined except for a small domain where at least six lead niobate phases were stable within a very short range of compositions. The formation of pyrochlore impurities during the processing of Pb(Mg1/3Nb2/3)O3 perovskite is discussed in relation to the phase diagram.",

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AB - Phase equilibria in the PbO-MgO-Nb2O5 system have been determined at 1000°C and 1 atm. A solid-solution range of the cubic pyrochlore phase was observed and the extent of that domain was determined. This solid solution equilibrates with the surrounding ternary and binary compounds to form a series of diphasic areas. The compatibility relations between all phases were determined except for a small domain where at least six lead niobate phases were stable within a very short range of compositions. The formation of pyrochlore impurities during the processing of Pb(Mg1/3Nb2/3)O3 perovskite is discussed in relation to the phase diagram.

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Phase Equilibria in the Lead-Magnesium-Niobium-Oxygen System at 1000°C

Abstract

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