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Nano-Scaled Fillers (Nanotubes, Nanosheets): Do They Toughness Brittle Matrices?

Ivo Dlouhy

Carbon nanotubes (CNTs) have been shown having excellent potential as reinforcements in a wide range of composite systems, thanks to their exceptional intrinsic mechanical and other functional properties. There has been growing interest in using CNTs in ceramic and/or glass matrices as toughening filler, in the last decade. Also, graphene nanosheets (GNSs) and graphene oxide nanosheets (GONSs) have attracted attention thanks to their unique combination of mechanical, thermal and electrical properties. Graphene thus appears to be an ideal second phase filler in order to modify properties of ceramics. Analogous effects have been newly obtained with boron nitride nanotubes (BNNTs) and nanosheets (BNNSs).