Thermodynamic Properties of Nonstoichiometric Yttria-Stabilized Zirconia at Low Oxygen Pressures

Thermodynamic properties of 8‐mol%‐yttria‐stabilized zirconia have been determined in the 810° to 1040°C temperature range at low Po2. A high‐temperature solid‐state coulometric titration method was used. The mass action constant, Kma, can be represented at low Po2 as Kma=0.677 exp [(–3.98 ±0.03 eV)...

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Veröffentlicht in:	Journal of the American Ceramic Society 1989-08, Vol.72 (8), p.1485-1487
Hauptverfasser:	Park, Jang-Hee, Blumenthal, Robert N.
Format:	Artikel
Sprache:	eng
Schlagworte:	360204 - Ceramics, Cermets, & Refractories- Physical Properties CHALCOGENIDES CHEMICAL COMPOSITION Chemistry DIFFUSION ELEMENTS Exact sciences and technology General and physical chemistry HIGH TEMPERATURE LOW PRESSURE MATERIALS SCIENCE NONMETALS nonstoichiometry OXIDES OXYGEN OXYGEN COMPOUNDS Phase equilibria PHYSICAL PROPERTIES STABILIZATION THERMODYNAMIC PROPERTIES thermodynamics TRANSITION ELEMENT COMPOUNDS yttrium YTTRIUM COMPOUNDS YTTRIUM OXIDES zirconia ZIRCONIUM COMPOUNDS ZIRCONIUM OXIDES
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Zusammenfassung:	Thermodynamic properties of 8‐mol%‐yttria‐stabilized zirconia have been determined in the 810° to 1040°C temperature range at low Po2. A high‐temperature solid‐state coulometric titration method was used. The mass action constant, Kma, can be represented at low Po2 as Kma=0.677 exp [(–3.98 ±0.03 eV)/kT].
ISSN:	0002-7820 1551-2916
DOI:	10.1111/j.1151-2916.1989.tb07683.x