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 language | English |
|---|---|
| Pages (from-to) | 2133-2137 |
| Number of pages | 5 |
| Journal | Journal of Materials Science |
| Volume | 21 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - Jun 1986 |
| Externally published | Yes |
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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 journal › Article
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TY - JOUR
T1 - Determination of diffusion coefficient of oxygen in α-iron from internal oxidation measurements in Fe-Si alloys
AU - Takada, Jun
AU - Adachi, Masao
PY - 1986/6
Y1 - 1986/6
N2 - 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.
AB - 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.
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UR - http://www.scopus.com/inward/citedby.url?scp=0022739252&partnerID=8YFLogxK
U2 - 10.1007/BF00547959
DO - 10.1007/BF00547959
M3 - Article
AN - SCOPUS:0022739252
VL - 21
SP - 2133
EP - 2137
JO - Journal of Materials Science
JF - Journal of Materials Science
SN - 0022-2461
IS - 6
ER -