Estimation of the grain boundary coverage of segregated impurities from the kinetics of free surface segregation

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Abstract

The bulk diffusion coefficient can be determined by measuring the kinetics of free surface segregation. In this paper it will be shown that if one chooses an appropriate temperature and time, the kinetics of free surface segregation mainly depend on the grain boundary diffusivity and the coverage of segregated impurity. In certain cases the grain boundary diffusion coefficient can be considered as known or at least constant and the relative grain boundary coverage can be determined. The average phosphorus coverage on the grain boundary of an FePC alloy will be studied in this way.

Original languageEnglish
Pages (from-to)615-617
Number of pages3
JournalSurface and Interface Analysis
Volume19
Issue number1-12
DOIs
Publication statusPublished - Jun 1992

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

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