The behavior of various aluminum powders was observed during heating in controlled environments, using a hot stage microscope and a specially built hot plate drop apparatus (for rapid heating). Results show the effect of powder type, atmosphere, temperature, and binder type on formation of interconnected and coalesced particles, and help to clarify similar processes operative in the propellant combustion zone. Coalescence (agglomeration) tended to occur above the aluminum melting point, with the breakdown of the oxide shell on the particles (due to expansion of the melting aluminum) being a key factor. Conditions that inhibited contact of molten aluminum between particles inhibited coalescence, but usually caused particles to become interconnected. These conditions included oxidizing atmosphere or presence of propellant binder materials. (Kursetz)


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    Titel :

    Behavior of aluminum in solid propellant combustion


    Weitere Titelangaben:

    Verhalten von Aluminium in Feststoff-Antriebsverbrennungssystemen


    Beteiligte:
    Price, E.W. (Autor:in) / Sigman, R.K. (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    1976


    Format / Umfang :

    58 Seiten


    Medientyp :

    Report


    Format :

    Print


    Sprache :

    Englisch




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    Aluminum Agglomeration in Solid-Propellant Combustion

    Jayaraman K. Sambamurthi / Edward W. Price / Robert K. Sigmant | AIAA | 1984


    Aluminum agglomeration in solid-propellant combustion

    PRICE, E. / SIGMAN, R. | AIAA | 1983



    Aluminum combustion modeling in solid propellant environments

    Widener, J. / Liang, Y. / Beckstead, M. | AIAA | 1999