|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Mechanical Behavior at the Nanoscale III
||W-23: Structure and Mechanical Properties of Nickel Nanoparticles And Their Epoxy Composites
||Claudia Luhrs, Sarath Menon, Rene M de la Fuente
|On-Site Speaker (Planned)
Nickel nanospheres of different sizes were used as fillers in epoxy composites. The hardness and Young’s Modulus of the composites increased as reinforcement particle size decreased. To further understand the role of the individual particulates features in the composite properties, an ultrasonic treatment was used to induce damage in bare Ni-nanospheres. The resulting Ni nanostructures were analyzed by XRD, SEM and TEM and the failure modes encountered are presented. This study reveals that, apart of controlling size, there are other routes to tailor the individual nanoparticle properties. When those consist of core-shell nanostructures (i.e. Ni-NiO), the level of damage produced by the ultrasonic process is less dramatic than the one observed in bare Ni. Despite the creation of lattice defects in the Ni core, the existence of a NiO shell seems to suppress/blunt the fracturing of the nanoparticle, thus providing a path to strengthen the individual nanostructures and derived composites.
||Planned: A print-only volume