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, D 10O , calculated using the rate equation for internal oxidation, increases with the increase in volume fraction of the oxide, f 10. 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 D 10O to f 10 = 0, giving good agreement with results obtained in our recent investigations.
Article PDF
Similar content being viewed by others
Explore related subjects
Discover the latest articles, news and stories from top researchers in related subjects.Avoid common mistakes on your manuscript.
References
J. H. Swisher and E. T. Turkdogan, Trans. AIME 239 (1967) 426.
J. Takada, K. Kashiwagi and M. Adachi, J. Mater. Sci. 19 (1984) 3451.
J. Takada, PhD thesis, Kyoto University (1982).
J. Takada, S. Yamamoto, S. Kikuchi and M. Adachi, Oxid. Metals 25 (1986) 93.
J. Takada, S. Yamamoto and M. Adachi, Met. Trans. 17A (1986) 221.
M. F. Ashby and G. C. Smith, J. Inst. Met. 91 (1963) 182.
C. Wagner, Z. Elektrochem. 63 (1959) 772.
F. Maak, Z. Metallkde. 52 (1961) 545.
J. Pötschke, P. M. Mathew and M. G. Frohberg, ibid. 61 (1970) 152.
R. J. Borg and D. Y. F. Lai, J. Appl. Phys. 41 (1970) 5193.
S. Goto and N. Koda, J. Jpn. Inst. Met. 34 (1970) 319.
P. Grieveson and E. T. Turkdogan, Trans. AIME 230 (1964) 1604.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Takada, J., Adachi, M. Determination of diffusion coefficient of oxygen in α-iron from internal oxidation measurements in Fe-Si alloys. J Mater Sci 21, 2133–2137 (1986). https://doi.org/10.1007/BF00547959
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF00547959