Abstract
The effect of oxygen on the interfacial reaction rates of nitrogen dissolution into molten iron has been studied using a new theoretical model and the measurements by an isotope-exchange technique in our previous studies. In our model, surface activities of the vacant sites and the sites occupied by oxygen have been proposed to predict the interfacial reaction rates and to clarify the rate-determining step of nitrogen dissolution into molten iron using the oxygen adsorption that had been obtained based on Butler's equations. It was found that the experimental results were in good accordance with the predicted values for adsorbed N2 dissociation control rather than those for N2 adsorption control in the low oxygen and sulphur activity region, yielding that the dissociation of nitrogen molecule into atoms at the surface is the rate-determining step of the interfacial reaction of nitrogen dissolution into molten iron.
| Original language | English |
|---|---|
| Pages (from-to) | 131-136 |
| Number of pages | 6 |
| Journal | Scandinavian Journal of Metallurgy |
| Volume | 34 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 2005 Apr 1 |
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Keywords
- Adsorption isotherm
- Butler's equation
- Interfacial reaction
- Molten iron
- Nitrogen dissolution
- Rate-determining step
- Surface activity
- Surface-active element
ASJC Scopus subject areas
- Metals and Alloys
Cite this
Interfacial reaction of nitrogen with molten iron : A theoretical study. / Lee, Joonho; Morita, Kazuki.
In: Scandinavian Journal of Metallurgy, Vol. 34, No. 2, 01.04.2005, p. 131-136.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Interfacial reaction of nitrogen with molten iron
T2 - A theoretical study
AU - Lee, Joonho
AU - Morita, Kazuki
PY - 2005/4/1
Y1 - 2005/4/1
N2 - The effect of oxygen on the interfacial reaction rates of nitrogen dissolution into molten iron has been studied using a new theoretical model and the measurements by an isotope-exchange technique in our previous studies. In our model, surface activities of the vacant sites and the sites occupied by oxygen have been proposed to predict the interfacial reaction rates and to clarify the rate-determining step of nitrogen dissolution into molten iron using the oxygen adsorption that had been obtained based on Butler's equations. It was found that the experimental results were in good accordance with the predicted values for adsorbed N2 dissociation control rather than those for N2 adsorption control in the low oxygen and sulphur activity region, yielding that the dissociation of nitrogen molecule into atoms at the surface is the rate-determining step of the interfacial reaction of nitrogen dissolution into molten iron.
AB - The effect of oxygen on the interfacial reaction rates of nitrogen dissolution into molten iron has been studied using a new theoretical model and the measurements by an isotope-exchange technique in our previous studies. In our model, surface activities of the vacant sites and the sites occupied by oxygen have been proposed to predict the interfacial reaction rates and to clarify the rate-determining step of nitrogen dissolution into molten iron using the oxygen adsorption that had been obtained based on Butler's equations. It was found that the experimental results were in good accordance with the predicted values for adsorbed N2 dissociation control rather than those for N2 adsorption control in the low oxygen and sulphur activity region, yielding that the dissociation of nitrogen molecule into atoms at the surface is the rate-determining step of the interfacial reaction of nitrogen dissolution into molten iron.
KW - Adsorption isotherm
KW - Butler's equation
KW - Interfacial reaction
KW - Molten iron
KW - Nitrogen dissolution
KW - Rate-determining step
KW - Surface activity
KW - Surface-active element
UR - http://www.scopus.com/inward/record.url?scp=17644396052&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=17644396052&partnerID=8YFLogxK
U2 - 10.1111/j.1600-0692.2005.00725.x
DO - 10.1111/j.1600-0692.2005.00725.x
M3 - Article
VL - 34
SP - 131
EP - 136
JO - Scandinavian Journal of Metallurgy
JF - Scandinavian Journal of Metallurgy
SN - 0371-0459
IS - 2
ER -