2012 Volume 53 Issue 5 Pages 1026-1028
A new class of bulk nanocrystalline nickel dispersed with nano-scale WO3 particles has been synthesized by conventional electrodeposition. It was found that WO3 particles of an initial size of 0.1 µm, when suspended in an electrolyte, fragmented into smaller nano-scale particles during deposition accompanied by phase transition from an initial monoclinic to tetragonal structure. The cause and effect relation between the fragmentation and the phase transition of WO3 particles was discussed. Hopefully, the phenomenon can be applied to establish a novel synthesis for a new class of bulk nanocrystalline metals with dispersed nano-scale particles endowed with higher strength and thermal stability than conventional mono-phase nanocrystalline materials.