Effect of Aluminum and Oxygen Content on Diffusivity of Aluminum in Molten Iron
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概要
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The diffusivity of aluminum in molten iron has been obtained with the capillary reservoir method. It is given asD (m2/s)=(1.00±0.11)×10-6 exp(-81500/RT ) 1823 to 1923 Kat lower oxygen content than 0.025 mass% and lower aluminum content than 1.4 mass%. If the oxygen content is higher, the diffusivity decreases apparently with the oxygen content. The effect of oxygen on aluminum diffusion is well interpreted by the counter current diffusion model. The effect of aluminum content is well expressed by the Darkens equation. D =(NAlD<SUB>Fe</SUB><SUP>S</SUP>+NFeD<SUB>Al</SUB><SUP>S</SUP>)(1+<SUB><I>d</I> ln<I>N</I><SUB>Al</SUB></SUB><SUP><I>d</I> ln<I>γ</I><SUB>Al</SUB></SUP>)The self diffusivities of Fe and Al in the equation are obtained, respectively asD<SUB>Fe</SUB><SUP>S</SUP>(m2/s)=9.48×10-4 exp(-145000/RT )D<SUB>Al</SUB><SUP>S</SUP>(m2/s)=1.54×10-6 exp(-96000/RT )
- 社団法人 日本鉄鋼協会の論文
- 1997-05-15
著者
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Kim Jeong-sik
Tokyo Research Laboratory Posco
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Yokoyama Seiji
Toyohashi University Of Technology
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KAWAKAMI Masahiro
Toyohashi University of Technology
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Yokoyama Seiji
Department Of Production Systems Engineering Toyohashi University Of Technology
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TAKAGI Kenji
Graduate Course, Toyohashi University of Technology
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NISHIMURA Motohiko
Graduate Course, Toyohashi University of Technology
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Nishimura Motohiko
Graduate Course Toyohashi University Of Technology
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Takagi Kenji
Graduate Course Toyohashi University Of Technology
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