Effect of Surface Concentration of Alloying Elements on Nitrogen Dissolution Rate in Molten Iron Alloys
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概要
- 論文の詳細を見る
The effects of alloying elements, such as Mn, Cu and Mo, on the rate of nitrogen dissolution in the molten iron alloys are investigated by an isotope exchange technique at 1973 K. The rate constant of nitrogen dissolution increases with increasing the content of Mn or Mo, which has stronger affinity with nitrogen than iron. On the other hand, the rate constant decreases with increasing the Cu content, which has a repulsive force against nitrogen in iron. The mole fractions of the alloying elements in the surface phase are estimated, and the reaction mechanism is discussed by investigating the dependence of the rate constant on the mole fraction in the surface phase. The effect of alloying elements on the nitrogen dissolution rate depends on the affinity of the solute element with nitrogen in molten iron and the mole fraction in the surface phase.
- 社団法人 日本鉄鋼協会の論文
- 2003-03-15
著者
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Usui T
Division Of Materials And Manufacturing Science Graduate School Of Engineering Osaka University
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Usui Tateo
Department Of Materials Science And Processing Graduate School Of Engineering Osaka University
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Ono Nakazato
Department Of Materials Science And Processing Graduate School Of Engineering Osaka University
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Koyama Tomotsugu
Department of Agricultural Chemistry, Faculty of Agriculture, Kyoto University
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Koyama T
Kyoto Univ. Kyoto Jpn
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Koyama T
Division Of Integrated Life Science Graduate School Of Biostudies Kyoto University
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