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Hot corrosion behavior of V2O5-coated Gd2Zr2O7 ceramic in air at 700–850°C
- Source :
-
Journal of the European Ceramic Society . Aug2009, Vol. 29 Issue 11, p2423-2427. 5p. - Publication Year :
- 2009
-
Abstract
- Abstract: Gd2Zr2O7 ceramic was prepared by solid state reaction at 1650°C for 10h in air, and exhibited a defect fluorite-type structure. Reaction between molten V2O5 and Gd2Zr2O7 ceramic was investigated at temperatures ranging from 700 to 850°C using an X-ray diffractometer (XRD) and scanning electron microscopy (SEM). Molten V2O5 reacted with Gd2Zr2O7 to form ZrV2O7 and GdVO4 at 700°C; however, in a temperature range of 750–850°C, molten V2O5 reacted with Gd2Zr2O7 to form GdVO4 and m-ZrO2. Two different reactions observed at 700°C and 750–850°C could be explained based on the thermal instability of ZrV2O7. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 09552219
- Volume :
- 29
- Issue :
- 11
- Database :
- Academic Search Index
- Journal :
- Journal of the European Ceramic Society
- Publication Type :
- Academic Journal
- Accession number :
- 40633300
- Full Text :
- https://doi.org/10.1016/j.jeurceramsoc.2009.01.001