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- Title
Eu<sup>3+</sup>-Doped YPO<sub>4</sub> Self-Monitoring Environmental Barrier Coating.
- Authors
Liu, Wen; Wang, Yiguang; Cheng, Laifei
- Abstract
Luminescence of europium-doped yttrium phosphate (YPO4:Eu) environmental barrier coatings (EBCs) has been developed as a means of self-monitoring. The corrosion behavior of YPO4:Eu in water vapor and molten salt is investigated as well as the effect of these corrosion environments on the intensity of luminescence. By comparison of these results, the relationship between the extent of corrosion of YPO4 and the change in luminescence intensity ratio is determined. Preliminary data suggest that the YPO4:Eu can monitor the microstructural damages including structural perturbations, phase changes and chemical reactions. The results also indicate that the intensity ratio from luminescence spectra can be used as nondestructive evaluation technology for EBCs.
- Subjects
SURFACE coatings; LUMINESCENCE; EUROPIUM; YTTRIUM phosphates; CORROSION &; anti-corrosives; NONDESTRUCTIVE testing
- Publication
Journal of the American Ceramic Society, 2011, Vol 94, Issue 10, p3449
- ISSN
0002-7820
- Publication type
Article
- DOI
10.1111/j.1551-2916.2011.04584.x