Microwave plasma chemical vapour-deposited (CVD) process has been used to grow polycrystalline diamond films over silicon substrates. Diamond-like carbon (DLC) thin films were grown over silicon substrates using a microwave plasma disc reactor. Reactant gases of CH4 and H2 were used in both CVD processes. Some preliminary feasibility tests were performed on the possible applicability of diamond and diamond-like carbon thin films for space-protective applications against artificially simulated electrically actuated plasma drag hypervelocity impact of olivine particles. As-deposited films were analysed by Raman for their chemical nature. The morphology and dimensions of hypervelocity impact craters in diamond and DLC films was also studied by scanning electron microscopy (SEM) and optical microscopy. The velocity of debris particles was determined by high-speed photography using a streak camera. The size of the impact particles was determined by measuring the size of the holes formed in the mylar sheet mounted just above the target diamond and DLC film/silicon and coordinates of the impact sites were determined using the same apparatus.


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    Titel :

    Characterization of hypervelocity impact craters on chemical vapour-deposited diamond and diamond-like carbon films


    Weitere Titelangaben:

    Simulierung von Einschlagkratern von Meteoriten oder Weltraummüll in CVD-Dünnschichten des Diamantes oder des diamantartigen Kohlenstoffes auf Siliciumsubstrat durch Überschallbeschuß mit Olivinkörnern


    Beteiligte:
    Ramesham, R. (Autor:in) / Best, S. (Autor:in) / Rose, M.F. (Autor:in) / Crumpler, M. (Autor:in)

    Erschienen in:

    Journal of Materials Science ; 32 , 4 ; 1029-1038


    Erscheinungsdatum :

    1997


    Format / Umfang :

    10 Seiten, 12 Bilder, 2 Tabellen, 18 Quellen




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch




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    Moore, H. J. / Robertson, F. G. | NTRS | 1966


    Hypervelocity impact craters in pumice

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    EXPERIMENTAL HYPERVELOCITY IMPACT CRATERS IN ROCK

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    Denardo, B. Pat / Summers, James L. / Nysmith, C. Robert | TIBKAT | 1967