Nanodynamic mechanical analysis (nanoDMA) is performed on spark plasma sintered tantalum carbide composites reinforced with graphene nanoplatelets (GNPs). The addition of GNPs enhances damping (tan delta) at 25-100 Hz frequencies by up to 300%. It also improves damping behavior through energy-dissipating mechanisms, such as GNP bending, kinking and sliding. A model for correlating improvement in the damping behavior with the fracture toughness is presented. GNP energy-dissipating mechanisms are most effective in improving damping behavior when GNPs are dispersed uniformly.


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    Title :

    Nanodynamic mechanical behavior of graphene nanoplatelet-reinforced tantalum carbide


    Additional title:

    Nanodynamisches mechanisches Verhalten von mit Graphen-Nanoplättchen verstärktem Tantalcarbid


    Contributors:

    Published in:

    Scripta Materialia ; 69 , 9 ; 678-681


    Publication date :

    2013


    Size :

    4 Seiten, 4 Bilder, 2 Tabellen, 19 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English