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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, 2 (11). 5145-5151. ISSN 0924-0136

(Document in English)

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


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: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
HAL Id:hal-01851871
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:Université de Toulouse > Institut Supérieur de l'Aéronautique et de l'Espace - ISAE-SUPAERO (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Other partners > EADS - Astrium (FRANCE)
French research institutions > Centre National d'Études Spatiales - CNES (FRANCE)
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:04 Jun 2009 07:38

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