Scaling Effects on High Strength, High Porosity Nanoporous Metal Foams

JOINT SEMINAR withThe Mork Family Department of
Chemical Engineering and Materials ScienceAndrea M. Hodge Materials Scientist Nanoscale Synthesis and Characterization Laboratory Lawrence Livermore National Laboratory Livermore, CA A comprehensive study including nanoindentation, pillar compression tests and MD simulations of nanoporous Au foams will be presented in order to elucidate on the relationship between mechanical properties, relative density and foam ligament size at the nanoscale. Scaling equations for yield strength and Young's Modulus were investigated using 20% to 42% relative density foams with ligament sizes ranging from 10 to 940 nm. Overall, this study demonstrates that, at the nanoscale, the foam strength is no longer governed by the relative density, but rather by the size of the ligaments. Additionally, experimental results show that nanoporous foams present a new type of high strength, low density material.

Location: Stauffer Science Lecture Hall (SLH) Rm 100

Audiences: Everyone Is Invited

Contact: April Mundy