Patent ID: 6180179
Filing Date: 2001-01-30
Classification: C23C

Abstract:
A process for producing a displace deposition-plated and doping-modified metal material, comprising the steps of;(1) bringing a surface of a metal base material comprising a metal I selected from the group consisting of aluminum and aluminum alloys, into contact with an aqueous solution (A) containing ions of at least one metal II having an oxidation-reduction potential nobler than that of the metal I, and selected, in consideration of the type of the metal I used, from the group consisting of lead, indium, iron, nickel, cobalt, gold, platinum, rhodium, and iridium, to cause the metal II to be displace deposition-plated on the surface of the metal I base material, and to form a displace deposition plated-coating layer of the metal II; and(2) bringing the displace deposition-plated coating layer of the metal II into contact with an aqueous solution (B) containing ions containing at least one metal III different from the metals I and II, having an oxidation-reduction potential nobler than that of the metal I and selected, in consideration of the types of the metals I and II used, from the group consisting of molybdenum, tungsten, vanadium, manganese, antimony, tin, lead, iron, zinc, and cobalt, to cause the metal II displace deposition-plated coating layer to be doped and modified with a metal III-containing substance deposited from the aqueous solution (B).