Electrodeposited Ultrafine Metal Particles in Pores of Porous Anodic Films of Aluminum
铝阳极氧化膜微孔内电沉积超细金属微粒

Anodization of aluminum was carried out to grow porous films using direct and alternating currents in the baths of phosphoric and oxalic acids. Ni, Co and Co(P were electrodeposited in the pores of the porous anodic films, forming ultrafine rod-shaped particles and wires. The particles and wires as well as the anodic films were examined using TEM assisted with SAD and EDAX. The nickel particles and wires consisted of micro-grains, while cobalt deposited in the pores appeared to be single crystals. Phosphorus can be incorporated in the metal deposits using AC electrodeposition, but the growth rate of the particles and wires containing phosphorus became slower compared with that of pure metals.