Patent ID: 6465052
Filing Date: 2002-10-15
Classification: H05H

Abstract:
A method for producing a nano-porous coating onto a solid substrate, said method comprising:(a) operating twin-wire arc nozzle means to heat and at least partially vaporize two wires of a metal composition for providing a stream of nanometer-sized vapor clusters of said metal composition into a chamber in which said substrate is disposed; (b) injecting a stream of reactive gas into said chamber to impinge upon said stream of metal vapor clusters and exothermically react therewith to produce substantially nanometer-sized metal compound or ceramic clusters; (c) operating heat treatment means to heat treat said metal compound or ceramic clusters so that a non-zero proportion of said clusters is in a solid state when impinging upon said substrate; and (d) directing said metal compound or ceramic clusters to impinge and deposit onto said substrate for forming said nano-porous coating.