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A New Technique for Evaluating Diffusion Mobility Parameters

Published

Author(s)

Carelyn E. Campbell

Abstract

The development and evaluation of a multicomponent diffusion mobility database for Ni-rich alloys are reviewed. In an effort to more directly evaluate the mobility parameters in the database, a method for optimizing the mobility parameters as a function of the experimental composition profiles is proposed. This method is demonstrated for the Ni-Co system at 1100 degrees C. The optimization of four diffusion mobility parameters, improved agreement between the experimental and calculated composition profiles and decreased the error between the experimental and calculated interdiffusion coefficients from 45 % to less than 5 %. This method can easily be expanded to multicomponent systems.
Proceedings Title
Proceedings| 1st| DSL 2005
Conference Dates
July 6-8, 2005
Conference Location
Aveiro, PO
Conference Title
International Conference n Diffusion in Solids and Liquids

Keywords

Co-Ni, multicomponent diffusion, Ni-base superalloys, optimization

Citation

Campbell, C. (2005), A New Technique for Evaluating Diffusion Mobility Parameters, Proceedings| 1st| DSL 2005, Aveiro, PO (Accessed April 13, 2024)
Created July 7, 2005, Updated February 17, 2017