The Chemical Potential of Vacancies in Metal Crystal

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Abstract

In this paper, a concept, the chemical potential of vacancies in metal crystals, has been derived from the partial mole free energy of vacancies, based on a model of an atom-vacancy binary solution. For a pure metal crystal containing the mole concentration of vacancies, Cy and it's value in thermal equilibrium, Co, at temperature T, the chemical potential can be expressed respectively as: μ(Cv) = RT[1 + 1n(Cv/Co)] and μ(Co) = RT The second term in μv (Cv) is the chemical potential of the vacancies referred to the standard-state concentration given by J. P. Hirth[1] and first term is the standard-state one presented.

Original languageEnglish
Pages (from-to)301-303
Number of pages3
JournalXiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering
Volume29
Issue number5
StatePublished - Oct 2000

Keywords

  • Atom-vacancy binary solution
  • Chemical potential
  • Metal crystal

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