Compound Formation and Phase Equilibria in the System PbO-SiO2

Autor:	F. P. Glasser, R. M. Smart
Rok vydání:	1974
Předmět:	Crystallography Chemistry Phase (matter) Materials Chemistry Ceramics and Composites Orthorhombic crystal system Phase equilibrium diagram
Zdroj:	Journal of the American Ceramic Society. 57:378-382
ISSN:	1551-2916 0002-7820
DOI:	10.1111/j.1151-2916.1974.tb11416.x
Popis:	Compound formation in the system PbO-SiO2 was studied; the results are contrasted with those previously reported. Fifteen binary phases, 4 of which had not been reported, were prepared in the present study. The new phases include Pb5Si8O21, an orthorhombic polymorph of PbSiO3, Pb3SiO5, and a high-SiO2 phase containing ∼ 60 mol% SiO2. It was shown that Pb3SiO5 is thermodynamically stable relative to Pb2SiO4 and 4PbO.SiO2 below 640±5°C. A revised phase equilibrium diagram is presented.
Databáze:	OpenAIRE
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