DEGRADATION OF SM2ZR2O7 THERMAL BARRIER COATING CAUSED BY CALCIUM-MAGNESIUM-ALUMINUM-SILICON OXIDE (CMAS) DEPOSITION
Conference
·
· Energy Technology 2015: Carbon Dioxide Management and Other Technologies
OSTI ID:1179000
Rare earth zirconates are promising materials for use as thermal barrier coatings in gas turbine engines. Among the lanthanide zirconate materials, Sm2Zr2O7 with the pyrochlore structure has lower thermal conductivity and better corrosion resistance against calcium-magnesium-aluminum-silicon oxide (CMAS). In this work, after reaction with CMAS, the pyrochlore structure transforms to the cubic fluorite structure and Ca2Sm8(SiO4)6O2 forms in elongated grain.
- Research Organization:
- Auburn Univ., AL (United States)
- Sponsoring Organization:
- USDOE Office of Fossil Energy (FE), Clean Coal and Carbon Management
- Contributing Organization:
- Auburn University
- DOE Contract Number:
- FE0011245
- OSTI ID:
- 1179000
- Journal Information:
- Energy Technology 2015: Carbon Dioxide Management and Other Technologies, Conference: TMS Annual Meeting, Orlando, FL, 16-19 March 2015
- Country of Publication:
- United States
- Language:
- English
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