Abstract
Two types of zinc-base composite have been studied, one containing networks of zinc oxide and the other particles of zinc oxide dispersed within the metal matrix. The composites containing zinc-oxide networks possessed mechanical strength at above the melting point of zinc; those containing discontinuous dispersoids had no measurable strength at such temperatures. These results tend to confirm an earlier suggestion that commercial sintered aluminium powder products (SAP) contain a continuous network of alumina dispersed throughout the aluminium matrix.