Patent ID: 6106958
Filing Date: 2000-08-22
Classification: C23C,Y10T

Abstract:
An article comprising a substrate having on at least a portion of its surface a multi-layered coating comprising, in order:first layer comprised of semi-bright nickel;second layer comprised of bright nickel;third layer comprised of nickel-tungsten-boron;fourth layer comprised of chrome;fifth layer comprised of zirconium or titanium;sixth sandwich layer comprised of a plurality of layers comprised of titanium or zirconium alternating with layers comprised of zirconium compound or titanium compound, wherein said compound is selected from the group consisting of nitrides, carbides and carbonitrides, the number of layers being at least effective to reduce film stress;seventh layer comprised of zirconium compound or titanium compound; andeighth layer having a thickness at least effective to improve the chemical resistance of said coating comprised of zirconium oxide or titanium oxide.