Acta Metallurgica Sinica (English Letters) ›› 2011, Vol. 24 ›› Issue (6): 432-442.DOI: 10.11890/1006-7191-116-432

• 研究论文 • 上一篇    下一篇

Application of the molecular interaction vacancy model to oxide solid solutions

陶东平   

  1. 昆明理工大学冶金与能源工程学院冶金系
  • 收稿日期:2010-12-06 修回日期:2011-03-16 出版日期:2011-12-25 发布日期:2011-12-22
  • 通讯作者: 陶东平

Estimation of component activities in some oxide solid solutions by the molecular interaction vacancy model

Dongping TAO   

  1. Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, China
  • Received:2010-12-06 Revised:2011-03-16 Online:2011-12-25 Published:2011-12-22
  • Contact: Dongping TAO

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Abstract: The molecular interaction vacancy model (MIVM) is used to estimate simultaneously activities of all components in a range of entire composition of six binary oxide solid solutions and the MnO-FeO-CaO ternary solid solution by their binary infinite dilute activity coefficients. The average errors are the 0.03%--5.0% for the binaries and the 4.11%--25.2% for the ternary which is less than that (4.84%--41.2%) of the sub-regular solution model (SRSM). This shows that MIVM is more effective and reliable than SRSM for the ternary and does not depend on a polynomial approximation with some ternary adjustable parameters.

Key words: Estimation, Activity, Oxide, Solid solution, Thermodynamic model