Interdiffusion and diffusion of Al in iron-aluminides

Marcel Salamon, Simon Dorfman, David Fuks, Gerhard Inden, Helmut Mehrer

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

Interdiffusion studies were performed in the Fe-Al system using diffusion couples between Fe50Al50 and Fe70Al30. Concentration depth profiles were measured by electron microprobe analysis. Interdiffusion coefficients were deduced thereof. They show linear Arrhenius behaviour over the investigated temperature range of 950 to 1450 K. From the interdiffusion coefficients Al diffusion coefficients were deduced via Darken-Manning's equation using published Fe tracer diffusion coefficients and theoretical results for the thermodynainic factor. Al diffusion is in the same range as Fe diffusion, depending on the model used for the calculation of the thermodynamic factor.

Original languageEnglish
Pages (from-to)553-558
Number of pages6
JournalDefect and Diffusion Forum
Issue number194-199 PART 1
DOIs
StatePublished - 1 Jan 2001

Keywords

  • Darken-Manning Equation
  • Interdiffusion
  • Iron-Aluminides
  • Thermodynamic Factor

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