Vapor pressure measurements, thermodynamic parameters, and phase diagram for the system potassium oxide-silicon oxide at high temperatures

The pressure of K atoms was measured over a temp. range sufficient to obtain the heat of vaporization, the Redlich-Kister coeffs. for the enthalpy of mixing, the temp. dependence of vaporization rate, and the variation of SiO sub 2 activity with temp. The KO sub 0.5 - SiO sub 2 phase diagram was cal...

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Bibliographic Details
Published in:Journal of physical chemistry (1952) 1978-05, Vol.82 (9), p.1021-1026
Main Authors: Eliezer, Naomi, Howald, R. A, Marinkovic, M, Eliezer, I
Format: Article
Language:English
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Summary:The pressure of K atoms was measured over a temp. range sufficient to obtain the heat of vaporization, the Redlich-Kister coeffs. for the enthalpy of mixing, the temp. dependence of vaporization rate, and the variation of SiO sub 2 activity with temp. The KO sub 0.5 - SiO sub 2 phase diagram was calculated from these values. Thermodynamic quantities are given for tridymite, K sub 2 Si sub 4 O sub 9, and K sub 2 Si sub 2 O sub 5. 31 refs.
ISSN:0022-3654
1541-5740
DOI:10.1021/j100498a012