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Preparation and characterization of electrolytic alumina deposit on austenitic stainless steel

El Hajjaji, Souad and El Alaoui, Sidi Mohammed and Simon, Patrice and Guenbour, Abdellah and Ben Bachir, Ali and Puech-Costes, Edith and Maurette, Marie-Thérèse and Ariès, Lucien Preparation and characterization of electrolytic alumina deposit on austenitic stainless steel. (2005) Science and Technology of Advanced Materials, 6 (5). 519-524. ISSN 1468-6996

(Document in English)

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


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
HAL Id:hal-03600365
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Other partners > Université Mohammed V - Agdal (MOROCCO)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Laboratory name:
Deposited On:12 Jun 2009 07:37

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