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Preparation and characterization of electrolytic alumina deposit on austenitic stainless steel

descriptionPublicationkeyboard_double_arrow_right Article , Journal 01 Jan 2005 France Publisher:Informa UK LimitedJournal:Science and Technology of Advanced Materials, volume 6, pages 519-524 (issn: 1468-6996, eissn: 1878-5514,

Authors: El Hajjaji, Souad; El Alaoui, Sidi Mohammed; Simon, Patrice; Guenbour, Abdellah; Ben Bachir, Ali; Puech-Costes, Edith; Maurette, Marie-Thérèse; +1 Authors

doi: 10.1016/j.stam.2005.01.004

Preparation and characterization of electrolytic alumina deposit on austenitic stainless steel

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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 °C) of the alumina coating was investigated. The presence of alumina increases the oxidation resistance of an austenitic stainless steel at 1000 °C. The morphology and the chemical composition of the deposit are analyzed. Results on the thermal stability of coating on austenitic stainless steel are presented.

Country

France

Related Organizations

Laboratoire Parole et Langage
France
INSA de Toulouse
France
Paul Sabatier University
France
Institut National Polytechnique de Toulouse
France
Mohammed V University
Morocco

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Keywords

[CHIM.MATE] Chemical Sciences/Material chemistry, Surface analysis, 670, Austenitic stainless steel, Matériaux, Alumina, Electrolytic deposit, [CHIM.MATE]Chemical Sciences/Material chemistry, Oxidation, Conversion coating, Statistical experimental design

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	impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.	Average