With the advent of micro-satellites technology, passive thermal controls in the form of surface coatings have become important for onboard thermal management. The thermal coatings, however, suffer outgassing and mass loss due to their direct exposure to harsh thermal environment and high vacuum in space. The purpose of this paper is to discuss testing and evaluation on outgassing of AA6061-T6 specimen surfaces treated with various types of anodized coatings of different thicknesses and the related mass loss before and after thermal exposure.

    Design/methodology/approach

    Samples of chromic acid, polytetrafluroethylene polymer, and black- and brown-colour anodized aluminum coupons were subjected to high vacuum (∼1×10−6 mbar), before and after thermal baking at 120°C. Spectrum analysis of the outgassed material to know their quantities and proportion was conducted subsequently using a Quadrupole mass analyzer.

    Findings

    The surface coatings under study complied with the spacecraft requirements for the mass loss of less than 1 percent of the total mass of the coating material used for that surface. The mass spectrum analysis of the outgassed material indicated that the majority of the coating mass loss was on account of water vapours and organic solvents like ethylene.

    Practical implications

    These results provided a good insight into the reliability of the coating materials studied and the bonding between the aluminum substrates and the coatings.

    Originality/value

    The coatings and the technology needed for their application on aluminum are readily available. The present work on outgassing and mass loss in a simulated space environment will provide useful insight on their usage for micro-satellites.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Outgassing studies on thermal control coatings for micro-satellites


    Beteiligte:

    Erschienen in:

    Erscheinungsdatum :

    21.03.2011


    Format / Umfang :

    6 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




    Outgassing studies on thermal control coatings for micro-satellites

    Joshi, Sunil Chandrakant | Online Contents | 2011



    ASTM E1559 Comparative Testing of Low-Outgassing Silicone-Based MAP Thermal Control Coatings

    Issoupov, Vitali / Horodetsky, Sergey / Kleiman, Jacob | Springer Verlag | 2017


    Simulation of Outgassing Processes in Spacecraft Coatings Induced by Thermal Vacuum Influence

    R. H. Kassanchine / A. V. Grigorevskiy / A. N. Galygin | AIAA | 2005


    Micro-satellites thermal control-concepts and components

    Baturkin, V. / International Academy of Astronautics | British Library Conference Proceedings | 2004