Premium
Thermodynamic Calculation of the Zirconia–Calcia System
Author(s) -
Du Yong,
Jin Zhanpeng,
Huang Peiyun
Publication year - 1992
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1992.tb04384.x
Subject(s) - calphad , thermodynamics , phase diagram , cubic zirconia , metastability , electromotive force , stoichiometry , materials science , phase (matter) , solid solution , thermodynamic process , material properties , thermodynamic databases for pure substances , chemistry , metallurgy , physics , ceramic , organic chemistry , quantum mechanics
An optimal thermodynamic data set for the zirconia–calcia system is evaluated by the CALPHAD (CALculation of PHAse Diagrams) method applied to experimental phase diagram and thermodynamic data. The liquid and C ss (cubic ZrO 2 solid solution) are described by a subregular solution model. Three compounds, CaZr 4 O 9 , Ca 6 Zr 19 O 44 , and CaZrO 3 , are modeled as stoichiometric compounds. A regular solution model is applied to the other phases. Comparisons between calculated and measured phase diagrams and thermodynamic quantities show that most of experimental information is satisfactorily accounted for by thermodynamic calculations. The calculations also reasonably predict the measured electromotive force concerning the metastable C ss .