High-temperature deformation of BaCe{sub 1-x}Y{sub x}O{sub 3-y} (0.05 {le} x {le} 0.2).
Journal Article
·
· Solid State Ionics
Compressive high-temperature deformation of BaCe{sub 1-x}Y{sub x}O{sub 3-y} polycrystals as a function of yttrium content (x=0.05, 0.1, 0.15, and 0.2) was conducted in controlled oxygen partial pressures of 0.1-2x10{sup 4} Pa at 1200-1400{sup o}C to determine deformation kinetics and the rate-controlling species for diffusional creep. Creep rate was independent of oxygen partial pressure and the steady-state creep rate increased with increasing Y content. The results can be explained on the basis of a grain-boundary-sliding creep mechanism in which the rate-controlling species are Ba or Ce interstitials. A simple point-defect model was used to describe the results.
- Research Organization:
- Argonne National Laboratory (ANL)
- DOE Contract Number:
- AC02-06CH11357
- OSTI ID:
- 942367
- Report Number(s):
- ANL/ET/JA-30721
- Journal Information:
- Solid State Ionics, Journal Name: Solid State Ionics Journal Issue: 1999 Vol. 117; ISSN 0167-2738; ISSN SSIOD3
- Country of Publication:
- United States
- Language:
- ENGLISH
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