DIFFUSION COEFFICIENT OF OXYGEN IN alpha -IRON DETERMINED BY INTERNAL OXIDATION TECHNIQUE.

Jun Takada, Sadahiro Yamamoto, Masao Adachi

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)

Abstract

The internal oxidation of Fe-Ti alloys was investigated over the temperature range l023 to ll23 K. A parabolic rate law holds in the present alloys. The rate constant for penetration of the oxidation front, the oxide formed in the oxidation layer, and the titanium concentration in the layer were determined. The concentration of dissolved oxygen at the specimen surface, controlled by a reaction in equilibrium with iron and FeO, was evaluated using thermodynamic data on both the dissociation of FeO and the solution of oxygen in alpha -iron. The diffusion coefficient of oxygen in alpha -iron was determined on the basis of the rate equation for internal oxidation.

Original languageEnglish
Pages (from-to)6-11
Number of pages6
JournalZeitschrift fuer Metallkunde/Materials Research and Advanced Techniques
Volume77
Issue number1
Publication statusPublished - Jan 1 1986

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Metals and Alloys
  • Materials Chemistry

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