The formation of carbon deposits on metallic surfaces from decomposition of jet fuel is a major concern in the development of advanced aircraft in which the fuel is also used as a heat sink. The objectives of the present study are to evaluate the surface behavior of Inconel 600 superalloy under thermal stressing conditions relevant to the operation of advanced aircraft and to characterize the carbon deposits from thermal decomposition of model hydrocarbons in a flow reactor. The morphology of the carbon deposits from different hydrocarbons on the Inconel 600 was studied by SEM. In the case of methylcyclohexane deposits, solid rod like fibers appear only on the crack of the superalloy surface, while dodecane deposits showed a similar type of structure all over the alloy surface. In the case of toluene, the micrograph shows spalling of the surface of the alloy surface with spherulitic deposits, indicating pyrolytic carbon formation. High resolution electron microscopy (HRTEM) of the toluene deposits showed along with the catalytically grown fiber containing metal particles, some carbon nanostructures that resemble with carbon nanotubes without any metal particles, indicated in the structure.


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    Title :

    Carbonaceous deposit formation in inconel 600 from thermal decomposition of N-dodecane, toluene and methylcyclohexane


    Additional title:

    Die Bildung von Kohlenstoffablagerung auf Inconel 600 durch thermische Zersetzung von n-Dodecan, Toluol und Methylcyclohexan


    Contributors:
    Altin, O. (author) / Pradhan, B.K. (author) / Eser, S. (author)


    Publication date :

    2000


    Size :

    2 Seiten, 1 Bild, 4 Quellen



    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English







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