Stability of Liquid Al Foams by Oxidised Al Powders
The oxide content in Al powder has a significant effect on the expansion and stability of Al foams produced using a direct gas blowing method. The optimum level of oxide content is expected to be between 0.3 and 0.9 wt.% to enable large foam expansion.
S. Asavavisithchai "Stability of Liquid Al Foams by Oxidised Al Powders ", Advanced Materials Research, Vols. 55-57, pp. 309-312, 2008