Thermochemical stability and nonstoichiometry of yttria-stabilized bismuth oxide solid solutions

Kruidhof, H. and Vries de, K.J. and Burggraaf, A.J. (1990) Thermochemical stability and nonstoichiometry of yttria-stabilized bismuth oxide solid solutions. Solid State Ionics, 37 (2-3). pp. 213-215. ISSN 0167-2738

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Abstract:	The thermochemical stability of fast oxygen ion conducting yttria stabilized bismuthoxide (YSB) solid solutions containing 22.0–32.5 mol% of yttria was investigated. It was shown that in the temperature range between 650–740 C the stabilized cubic δ-phase containing less than 31.8 mol% of yttria is not stable during long term annealing treatments (greater-or-equal, slanted 500 hours). During annealing at 650 C a sluggish transformation from the cubic to hexagonal phase appears, while above 740 C this hexagonal phase is converted very fast into the cubic phase again. It was shown, that the oxygen content of YSB solid solutions is a function of temperature and oxygen partial pressure
Item Type:	Article
Copyright:	Elsevier
Research Group:	Inorganic Membranes (IM)
Link to this item:	http://purl.utwente.nl/publications/61546
Official URL:	http://dx.doi.org/10.1016/0167-2738(90)90246-N
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