Through this study we attempt to describe the physico-chemical behavior of carbonbased materials that can be used as thermal protection system for solar probe missions. As regarding the numerical study, the physical sputtering yield of carbon by solar winds is very low, less than 2 %. However, the implantation rate of the ions is very high, more than 85 %, and the implantation depth is around 100 nm for hydrogen and 150 nm for helium. This could have a great influence on the material properties and its chemical erosion. Indeed, the higher the hydrogen implantation rate, the higher the reaction probability with carbon atoms is. Experimentally, VUV radiation has an important influence on the behavior of carbon-based materials. C/C composite seems to be more suitable than polycrystalline graphite, as regarding the different results obtained during this study. Some phenomena could be quite well explained, like microstructural or morphological modifications, but others, such as the opposite outgassing behavior under high temperature and VUV radiation between the two carbon-based materials presented need further analysis to be clearly understood. In the future, additional tests will be performed, and combined effects of high temperature, VUV radiation and ion bombardment will be investigated.


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    Titel :

    Combined effect of high temperature and VUV radiation on carbon-based materials


    Weitere Titelangaben:

    Kombinierter Einfluss von hoher Temperatur und Vakuum-UV-Strahlung auf Kohlensoffbasis-Werkstoffe


    Beteiligte:
    Eck, J. (Autor:in) / Sans, J.L. (Autor:in) / Balat-Pichelin, M. (Autor:in)


    Erscheinungsdatum :

    2010


    Format / Umfang :

    11 Seiten, 9 Bilder, 1 Tabelle, 8 Quellen



    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




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