Corrosion behaviour of different hot rolled steels

The oxidation–corrosion behaviour of hot rolled alloys was examined by electrochemical impedance spectroscopy. The corrosion behaviour of the non-oxidised alloys was first determined in order to have a reference behaviour. Then, each alloy was oxidised for 1 and 3 days at 650 °C in air and its corro...

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Bibliographic Details
Published in:	Corrosion science Vol. 48; no. 2; pp. 472 - 480
Main Authors:	Pérez, F.J., Martínez, L., Hierro, M.P., Gómez, C., Portela, A.L., Pucci, G.N., Duday, D., Lecomte-Beckers, J., Greday, Y.
Format:	Journal Article Web Resource
Language:	English
Published:	Oxford Elsevier Ltd 01-02-2006 Elsevier Science
Subjects:	Applied sciences Chemistry Chimie Corrosion Corrosion environments EIS Engineering, computing & technology Exact sciences and technology Ingénierie, informatique & technologie lectrochemical impedance spectroscopy LiMaRC - Liège Materials Research Center Materials science & engineering Metals. Metallurgy Oxidation oxidation-corrosion Oxide layer oxidised Physical, chemical, mathematical & earth Sciences Physique, chimie, mathématiques & sciences de la terre Roll alloy Science des matériaux & ingénierie Oxidation Corrosion Oxide layer EIS Roll alloy Hot rolling Forming Hot corrosion Impedance
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Summary:	The oxidation–corrosion behaviour of hot rolled alloys was examined by electrochemical impedance spectroscopy. The corrosion behaviour of the non-oxidised alloys was first determined in order to have a reference behaviour. Then, each alloy was oxidised for 1 and 3 days at 650 °C in air and its corrosion behaviour was also determined. For all the alloys, Fe 2O 3 was formed at the scale–gas interface. However, the Fe 2O 3 crystallographic structures varied as a function of the alloy composition. Differences in the corrosion behaviour are due to the thickness, the microstructure and the porosity of the scale. The new graphite chromium iron alloy (Hi-Cr + C) have an oxidation–corrosion behaviour close to the indefinite chill double paired (ICDP) one and is therefore thought to be a good candidate to replace the ICPD alloy. In the case of the high speed steel (HSS) alloy, the oxidation–corrosion kinetics are too slow to prevent sticking problems. The Co addition decreases the corrosion–oxidation rates for the non-oxidised and oxidised samples but this effect is limited in time.
Bibliography:	ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 scopus-id:2-s2.0-29244473100
ISSN:	0010-938X 1879-0496
DOI:	10.1016/j.corsci.2005.01.001