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RESEARCH PRODUCT
Numerical Determination of Intrinsic Diffusion Coefficient of Aluminide Coatings on Metals
Marek DanielewskiOlivier PolitanoBartłomiej WierzbaSébastien Chevaliersubject
RadiationMaterials scienceMetallurgyIntermetallicThermodynamicschemistry.chemical_elementFEALCondensed Matter PhysicsDiffusion layerchemistryAluminiumEffective diffusion coefficientGrain boundary diffusion coefficientGeneral Materials ScienceDiffusion (business)Aluminidedescription
This paper presents a numerical method to determine the composition dependent diffusivities and to predict the concentration profile during the interdiffusion process. The intrinsic diffusion coefficients in diffusion aluminide coatings (Fe-Al) were determined at 1000oC. The obtained diffusion coefficient for iron in Fe3Al or FeAl is in the range 10-10 to 10-9 cm2.s-1. The aluminum diffusion coefficient varies from 10-11 to 10-7 cm2.s-1 in the same phases.The present approach also permits to model the reactive diffusion in the Fe-Al systems.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2009-04-01 | Defect and Diffusion Forum |