Quantitative characterization of the atomic-scale structure of oxyhydroxides in rusts formed on steel surfaces
- School of Health Science, Faculty of Medicine, Niigata University, Niigata 951-8518 (Japan)
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577 (Japan)
- Technical Development Bureau, Nippon Steel Corporation, Futtsu 293-8511 (Japan)
Quantitative X-ray structural analysis coupled with anomalous X-ray scattering has been used for characterizing the atomic-scale structure of rust formed on steel surfaces. Samples were prepared from rust layers formed on the surfaces of two commercial steels. X-ray scattered intensity profiles of the two samples showed that the rusts consisted mainly of two types of ferric oxyhydroxide, {alpha}-FeOOH and {gamma}-FeOOH. The amounts of these rust components and the realistic atomic arrangements in the components were estimated by fitting both the ordinary and the environmental interference functions with a model structure calculated using the reverse Monte Carlo simulation technique. The two rust components were found to be the network structure formed by FeO{sub 6} octahedral units, the network structure itself deviating from the ideal case. The present results also suggest that the structural analysis method using anomalous X-ray scattering and the reverse Monte Carlo technique is very successful in determining the atomic-scale structure of rusts formed on the steel surfaces.
- OSTI ID:
- 20833171
- Journal Information:
- Materials Characterization, Vol. 55, Issue 4-5; Other Information: DOI: 10.1016/j.matchar.2005.06.004; PII: S1044-5803(05)00163-4; Copyright (c) 2005 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); ISSN 1044-5803
- Country of Publication:
- United States
- Language:
- English
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