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HomeDefect and Diffusion ForumDefect and Diffusion Forum Vols. 237-240First Study of Iron Self-Diffusion in Fe2O3 Single...

First Study of Iron Self-Diffusion in Fe₂O₃ Single Crystals by SIMS

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Abstract:

Iron bulk self-diffusion coefficients were measured in Fe2O3 single crystals using an original methodology based on the utilization of 57Fe stable isotope as iron tracer and depth profiling by secondary ion mass spectrometry (SIMS). The iron self-diffusion coefficients measured along c-axis direction, between 900 and 1100o C, in oxygen atmosphere, can be described by the following Arrhenius relationship: D(cm2/s)= 5.2x106 exp [-510 (kJ/mol)/RT], and are similar to reliable data available in the literature, obtained by means of radioactive techniques.

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Diffusion in Materials - DIMAT2004

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Periodical:

Defect and Diffusion Forum (Volumes 237-240)

Pages:

277-281

DOI:

https://doi.org/10.4028/www.scientific.net/DDF.237-240.277

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Online since:

April 2005

Authors:

Antônio Claret Soares Sabioni, Antônio Márcio J.M. Daniel, W.A.A. Macedo, M.D. Martins, Anne Marie Huntz, François Jomard, A.I.C. Persiano

Keywords:

Fe₂O₃, Hematite, Iron Diffusion, SIMS

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© 2005 Trans Tech Publications Ltd. All Rights Reserved

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