Determination of diffusion coefficient of oxygen in α-iron from internal oxidation measurements in Fe-Si alloys

Jun Takada, Masao Adachi

Research output: Contribution to journalArticle

43 Citations (Scopus)

Abstract

The diffusion coefficient of oxygen in α-iron was determined by internal oxidation measurements on iron alloys with various contents of silicon in a temperature range from 1073 to 11 73 K with particular attention to the effect of oxide particles in the oxidation layer. The oxide in the oxidation layer and the concentration of silicon present as an oxide, as well as the rate constant for penetration of the oxidation front were determined. The diffusion coefficient of oxygen in the layer, DO 10, calculated using the rate equation for internal oxidation, increases with the increase in volume fraction of the oxide, f10. This result indicates that the existence of oxide particles accelerates oxygen diffusion. Therefore, the diffusion coefficient of oxygen in α-iron is determined by extrapolating DO 10to f10 = 0, giving good agreement with results obtained in our recent investigations.

Original languageEnglish
Pages (from-to)2133-2137
Number of pages5
JournalJournal of Materials Science
Volume21
Issue number6
DOIs
Publication statusPublished - Jun 1986
Externally publishedYes

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Internal oxidation
Oxides
Iron
diffusion coefficient
Oxygen
iron
oxidation
oxides
oxygen
Silicon
Oxidation
iron alloys
Iron alloys
silicon
Rate constants
Volume fraction
penetration

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials
  • Materials Science(all)

Cite this

Determination of diffusion coefficient of oxygen in α-iron from internal oxidation measurements in Fe-Si alloys. / Takada, Jun; Adachi, Masao.

In: Journal of Materials Science, Vol. 21, No. 6, 06.1986, p. 2133-2137.

Research output: Contribution to journalArticle

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