Cyclic oxidation and mechanical behaviour of slurry aluminide coatings for steam turbine components

Autor:	J.P. Banks, S. Osgerby, Alina Agüero, R. Van Vulpen, Marcos Gutiérrez, R. Muelas
Rok vydání:	2007
Předmět:	Materials science Metallurgy FEAL Surfaces and Interfaces General Chemistry engineering.material Condensed Matter Physics Microstructure Thermal expansion Surfaces Coatings and Films Coating Creep Materials Chemistry Slurry engineering Aluminide Layer (electronics)
Zdroj:	Surface and Coatings Technology. 201:6253-6260
ISSN:	0257-8972
DOI:	10.1016/j.surfcoat.2006.11.033
Popis:	The excellent steam oxidation resistance of iron aluminide coatings on ferritic steels at 650 °C has been demonstrated both by laboratory tests and field exposure. These coatings are formed by the application of an Al slurry followed by diffusion heat treatment at 700 °C for 10 h. The resulting microstructure is mostly composed of Fe2Al5 on top of a much thinner FeAl layer. This coating exhibits perpendicular cracks due to thermal expansion mismatch between coating and substrate. However, these stress relieving cracks do not seem to have an effect on the mechanical properties of the substrate. Cyclic oxidation, creep resistance and TMF testing of these coatings at 650 °C indicate excellent performance.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::e21a1e7ec649e6cd824ec3832a788905 https://doi.org/10.1016/j.surfcoat.2006.11.033 Zobrazit plný text záznamu Full Text from ScienceDirect