|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||2016 Functional Nanomaterials: Emerging Nanomaterials and Techniques for 3D Architectures
||Fabrication of Tubular Structures with Optimized Nanoporous Sandwich Walls
||Theresa Juarez, Andrea M Hodge
|On-Site Speaker (Planned)
This investigation focuses on developing tubes with metal-foam sandwich walls that are designed to resist buckling and cracking. These failure modes, which are common in hierarchical lattices made of tubular ligaments, can be mitigated by controlling the wall architecture. The sandwich walls are composed of a high-melting temperature metal as the panel and nanoporous metal as the foam core. The structures are fabricated by using a combination of synthesis methods including the electrodeposition of two metals onto a thermally stable metal tube, homogenization of the deposited metals, and dealloying of the resulting alloy to generate a nanoporous foam layer. Finally, the outer panel is added by sputtering metal onto the tube. The porosity of the foam is further adjusted through coarsening of the pore size with heat treatments.