Cyclic Hot Corrosion of Thermal Barrier Coatings and Overlay Coatings
2013 (English)In: Proceedings of ASME Turbo Expo 2013: Turbine Technical Conference and Exposition, GT2013, The American Society of Mechanical Engineers (ASME) , 2013, Vol. 4, 1-8 p.Conference paper (Refereed)
The influence, and interdependence, of water vapor and Na2SO4–50 mol% NaCl on the oxidation of a NiCoCrAlY coating and a thermal barrier coating (TBC) were studied at 750 °C. Water vapor was found to have a negligible effect on oxide composition, but influenced the oxide morphology on the NiCoCrAlY coating. Na2SO4–50 mol% NaCl deposits on the coatings influencedoxide composition, most notably by the promotion of a Y rich phase. The effect of Na2SO4–50 mol% NaCl deposits was also evident for the TBC coated specimen, where the formed metal/ceramic interface oxide was affected by salt reaching the interface by penetration of the zirconia TBC.
Place, publisher, year, edition, pages
The American Society of Mechanical Engineers (ASME) , 2013. Vol. 4, 1-8 p.
IdentifiersURN: urn:nbn:se:liu:diva-95556DOI: 10.1115/GT2013-95526ISI: 000361499900009ISBN: 978-0-7918-5518-8OAI: oai:DiVA.org:liu-95556DiVA: diva2:635992
ASME Turbo Expo 2013: Turbine Technical Conference and Exposition, GT2013, San Antonio, Texas, USA, June 3-7, 2013
Paper No. GT2013-955262013-07-082013-07-082016-05-13Bibliographically approved