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Preparation and characterization of electrolytic alumina deposit on austenitic stainless steel

El Hajjaji, S. and El Alaoui, M. and Simon, Patrice and Guenbour, A and Ben Bachir, A. and Puech-Costes, E. and Maurette, M.-T. and Aries, L. Preparation and characterization of electrolytic alumina deposit on austenitic stainless steel. (2005) Science and Technology of Advanced Materials, vol. 6 (n° 5). pp. 519-524. ISSN 1468-6996

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Official URL: http://dx.doi.org/10.1016/j.stam.2005.01.004

Abstract

Conversion coating modified by alumina has been studied as a way for improving the resistance to thermal oxidation of an austenitic stainless steel. Conversion coating, characterized by a particular morphology and strong interfacial adhesion with the substrate, facilitate the electrochemical deposition of ceramic layers and enhance their adhesion to the substrate. The influence of the current density and treatment time on alumina deposit was studied using statistical experimental designs like Doehlert uniform shell design. After heating, coatings present a continuous composition gradient with refractory compounds at the surface. The behavior at high temperature (1000 8C) of the alumina coating was investigated. The presence of alumina increases the oxidation resistance of an austenitic stainless steel at 1000 8C. The morphology and the chemical composition of the deposit are analyzed. Results on the thermal stability of coating on austenitic stainless steel are presented.

Item Type:Article
Additional Information:Thanks to Institute of Physics editor. The definitive version is available at http://www.iop.org The original PDF of the article can be found at Science and Technology of Advanced Materials website : http://www.iop.org/EJ/journal/STAM
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution: Université de Toulouse > Institut National Polytechnique de Toulouse - INPT
Other partners > Université Mohammed V Agdal - Faculté de sciences de Rabat (MOROCCO)
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS
French research institutions > Centre National de la Recherche Scientifique - CNRS
Laboratory name:
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Deposited By: Celine Cabaup

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