Void Formation in Magnetite Scale Formed on Iron at 823 K -Elucidation by Chemical Potential Distribution-

Mitsutoshi Ueda; Kenichi Kawamura; Toshio Maruyama

doi:10.4028/www.scientific.net/MSF.522-523.37

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HomeMaterials Science ForumMaterials Science Forum Vols. 522-523Void Formation in Magnetite Scale Formed on Iron...

Void Formation in Magnetite Scale Formed on Iron at 823 K -Elucidation by Chemical Potential Distribution-

Abstract:

Estimation of void formation in oxide scale is important for predicting exfoliation of the oxide scale. Void formation in magnetite scale formed on iron at 823 K has been elucidated by chemical potential distribution, flux of oxide ion and its divergence. This calculation also estimates a effective diffusion coefficient, which includes both lattice diffusion and grain boundary diffusion in magnetite scale. The resulting effective diffusion coefficients give the quantitative elucidation of the morphology of the magnetite scale. The divergence of oxide ion explains well a position and an amount of void in magnetite scale.

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Materials Science Forum (Volumes 522-523)

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37-44

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.522-523.37

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Online since:

August 2006

Authors:

Mitsutoshi Ueda, Kenichi Kawamura, Toshio Maruyama

Keywords:

Chemical Potential Distribution, Divergence, Magnetite Scale, Void Formation

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References

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