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Oxygen diffusion across the grain boundary in bicrystal yttria stabilized zirconia
- Issue Date
- Dec-2012
- Publisher
- Elsevier BV
- Keywords
- Oxide ion conducting ceramic; Bi-crystal structure; Ionic conduction thorough grain boundary; EIS and SIMS
- Citation
- Solid State Communications, v.152, no.24, pp 2169 - 2171
- Pages
- 3
- Indexed
- SCI
SCIE
SCOPUS
- Journal Title
- Solid State Communications
- Volume
- 152
- Number
- 24
- Start Page
- 2169
- End Page
- 2171
- ISSN
- 0038-1098
1879-2766
- Abstract
- Electrochemical impedance spectroscopy (EIS) measurements in yttria stabilized zirconia (YSZ) with a single Sigma 13(510)/[001] grain boundary in a common SOFC electrolyte showed that oxide ion diffusion is blocked when it jumps across the grain boundary at operating temperatures between 300 and 525 degrees C. The EIS results are supported by secondary ion mass spectrometry (SIMS) measurements combined with oxygen isotope annealing on the bicrystal YSZ. The SIMS results showed that the O-18/O-16+O-18 ratio dropped sharply near the grain boundary regions.
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Related Researcher
- Kim, Young Beom
- COLLEGE OF ENGINEERING (SCHOOL OF MECHANICAL ENGINEERING)