Thermodynamic Reassessment of ZrO^sub 2^-CaO System

In this work, several thermodynamic assessments adopted widely for ZrO... - CaO system are reviewed and examined, the existing discrepancies are summarized, and a new assessment is carried out based on the formation enthalpy of two compounds (... and ...) and experimental activity data concerning cu...

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Bibliographic Details
Published inJournal of the American Ceramic Society Vol. 92; no. 5; p. 1098
Main Authors Wang, Kun, Li, Chong He, Gao, Yong Hui, Lu, Xiong Gang, Ding, Wei Zhong
Format Journal Article
LanguageEnglish
Published Columbus Wiley Subscription Services, Inc 01.05.2009
Subjects
Ceramics
Materials science
Thermodynamics
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Summary:In this work, several thermodynamic assessments adopted widely for ZrO... - CaO system are reviewed and examined, the existing discrepancies are summarized, and a new assessment is carried out based on the formation enthalpy of two compounds (... and ...) and experimental activity data concerning cubic solid solution. The thermodynamic parameters of all phases have been optimized by the least squares minimization procedure, a self consistent set of the optimized Gibbs energy parameters has been derived, which can be safely used to extrapolate into the multicomponent system. Compared with experimental data and the results in this work as well as the results reported previously, it is demonstrated that the present thermodynamic assessment is in better agreement with most of the experiments. (ProQuest: ... denotes formulae/symbols omitted.)
ISSN:0002-7820
1551-2916