Thermodynamic activity of Y2O3 in solid solutions of the Y2O3-ZrO2 system
- 1. Moskovskij Gosudarstvennyj Univ. (USSR)
Description
Thermodynamic activity of Y2O3 in solid solutions of Y2O3-ZrO2 system and Gibbs formation energy of some phases in mentioned system at 1300 K were determined experimentally by the method of electromotive forces with solid fluorine-ionic electrolyte. Changes of Gibbs energy for reactions of formation of tetragonal (x=0.013; 0.02) and cubic (x=0.15; 0.25; 0.30) solid solutions in Y2O3-ZrO2 system of simple oxides equal 1.7+-0 1; 2.5+-0.1 and 19.2+0.4; 28.5+-0.4; 31.8+-0.4 kJ/mol for (Ysub(2)Osub(3))sub(x)(ZrOsub(2))sub(1-x) (x=0.013-0.35) compounds respectively. It is shown that cubic solid solution in Y2O3-ZrO2 system is more thermodynamically stable with respect to initial simple oxides as compared to similar solid solution in CaO-ZrO2 system
Additional details
Additional titles
- Original title (Russian)
- Термодинамическая активност' Ы
Publishing Information
- Journal Title
- Zh. Fiz. Khim.
- Journal Volume
- 58
- Journal Issue
- 10
- Series
- Zh. Fiz. Khim.
- Journal Page Range
- 2596-2597
- ISSN
- 0044-4537
INIS
- Country of Publication
- Russian Federation
- Country of Input or Organization
- USSR
- INIS RN
- 16029705
- Subject category
- S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
- Descriptors DEI
- CUBIC LATTICES; ELECTROMOTIVE FORCE; FREE ENTHALPY; QUANTITY RATIO; SOLID SOLUTIONS; TETRAGONAL LATTICES; THERMODYNAMIC ACTIVITY; VERY HIGH TEMPERATURE; YTTRIUM OXIDES; ZIRCONIUM OXIDES
- Descriptors DEC
- CHALCOGENIDES; CRYSTAL LATTICES; CRYSTAL STRUCTURE; DISPERSIONS; ELECTRIC POTENTIAL; ENERGY; HOMOGENEOUS MIXTURES; MIXTURES; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; SOLUTIONS; THERMODYNAMIC PROPERTIES; TRANSITION ELEMENT COMPOUNDS; YTTRIUM COMPOUNDS; ZIRCONIUM COMPOUNDS
Optional Information
- Notes
- For English translation see the journal Russian Journal of Physical Chemistry (UK).