Title of article :
Cyclic oxidation and mechanical behaviour of slurry aluminide coatings for steam turbine components
Author/Authors :
Agüero، نويسنده , , A. and Muelas، نويسنده , , R. and Gutiérrez، نويسنده , , M. and Van Vulpen، نويسنده , , R. and Osgerby، نويسنده , , S. and Banks، نويسنده , , J.P.، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2007
Pages :
8
From page :
6253
To page :
6260
Abstract :
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.
Keywords :
Aluminide , SLURRY , Ferritic–martensitic steels , Steam oxidation , Cyclic oxidation , Creep , TMF , Steam power generation plant , Coatings
Journal title :
Surface and Coatings Technology
Serial Year :
2007
Journal title :
Surface and Coatings Technology
Record number :
1816110
Link To Document :
بازگشت