Abstract
The impulse acoustic microscopy (AM) has been applied to study 3D microstructure and local mechanical properties of carbon nanocomposites. The particles of exfoliated graphite, graphite nanoplatelets, carbon nanoflakes, and carbon nanotubes have been used as a nanofiller. The AM technique shows the tendency of carbon nanoparticles to clusterization and formation of fractal micron-sized structures. Nanoparticle aggregates are visible on acoustic images for all types of carbon nanocomposites at arbitrary depth of their bulk. The elastic measurement demonstrates a weak dependence on type and content of carbon nanofiller. The impulse AM is the technique that provides direct data on bulk structure of a composite matter; it is characterized by combination of high efficiency and availability.
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