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Black anodic coatings for space applications: study of the process parameters, characteristics and mechanical properties

Goueffon, Yann and Arurault, Laurent and Mabru, Catherine and Tonon, Claire and Guigue, Pascale Black anodic coatings for space applications: study of the process parameters, characteristics and mechanical properties. (2009) Journal of Materials Processing Technology, vol. 2 (n° 11). pp. 5145-5151. ISSN 0924-0136

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Official URL: http://dx.doi.org/10.1016/j.jmatprotec.2009.02.013

Abstract

Black inorganic anodized aluminium alloys are used for managing passive thermal control on spacecraft and for avoiding stray light in optical equipment. Spalling of these coatings has sometimes been observed after thermal cycling on 2XXX and 7XXX aluminium alloys. This phenomenon could generate particulate contamination in satellites and may affect mission lifetime. In this work, the influences of the four main steps of the process (pretreatments, sulphuric anodizing, colouring and sealing) on the coating characteristics have been studied for a 7175 T7351 aluminium alloy. The chemical heterogeneity of the coating has been underlined, and its mechanical behaviour observed through crazing. Scratch-testing, used to evaluate coating adhesion to its substrate, revealed the negative impact of thermal cycling.

Item Type:Article
Additional Information:Thanks to Elsevier editor. The definitive version is available at http://www.sciencedirect.com The original PDF of the article can be found at Journal of Materials Processing Technology website : http://www.sciencedirect.com/science/journal/09240136
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution: Université de Toulouse > Institut Supérieur de l'Aéronautique et de l'Espace - ISAE
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT
Other partners > EADS - Astrium (FRANCE)
French research institutions > Centre National des Etudes Spatiales - CNES
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: Catherine Mabru
Deposited On:04 Jun 2009 07:38

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