Patent ID: 6159618
Filing Date: 2000-12-12
Classification: C23C,Y02T,Y10T

Abstract:
Multi-layer material comprising a substrate and an anti-erosion, anti-abrasion, and anti-wear coating including a tungsten deposit and an under-layer between said deposit and said substrate, said substrate being formed of aluminum, magnesium or one of their alloys, said tungsten deposit including at least one layer of a material selected from the group consisting of tungsten, alloys of tungsten, the carbides, silicides and nitrides of tungsten, and their mixtures and the solid solutions of nitrogen and of carbon in tungsten, said under-layer being formed of a material having mechanical and thermo-mechanical properties intermediate to those of said substrate and those of said deposit, said under-layer including at least one layer of a material selected from the group consisting of aluminum, chromium, molybdenum, niobium, titanium, zirconium, their nitrides and carbides, solid solutions of carbon and nitrogen in said metals, steels, aluminum-tungsten with a composition gradient and aluminum oxide.