Oxide-mediated mechanisms of gallium foam generation and stabilization during shear mixing in air
Wilson Kong, Najam Ul Hassan Shah, Taylor V. Neumann, Man Hou Vong, Praveen Kotagama, Michael D. Dickey, Robert Y. Wang, Konrad Rykaczewski
Abstract
Foaming of gallium-based liquid metals improves their processability and-seemingly in contrast to processing of other metal foams-can be achieved through shear-mixing in air without addition of solid microparticles. Resolving this discrepancy, systematic processing-structure-property characterization demonstrates that many crumpled oxide particles are generated prior to air bubble accumulation.
Topics & Concepts
GalliumMixing (physics)Materials scienceShear (geology)BubbleMetal foamAir bubbleOxideChemical engineeringLiquid metalMetalComposite materialNanotechnologyMetallurgyMechanicsEngineeringQuantum mechanicsPhysicsPickering emulsions and particle stabilizationSurface Modification and SuperhydrophobicityElectrohydrodynamics and Fluid Dynamics