Patent ID: 8182931
Filing Date: 2012-05-22
Classification: C23C,C25D,Y10T

Abstract:
1. A part comprising: a substrate; a coating deposited over said substrate, said coating being brittle and susceptible to cracks; a crack halting layer separating said substrate from said coating; said substrate having a first modulus of elasticity and said crack halting layer is formed from a material having a second modulus of elasticity less than said first modulus of elasticity; said coating comprising a wear coating and having a third modulus of elasticity greater than said first modulus of elasticity; said wear coating being a tungsten carbide coating; said crack halting layer being formed from a nickel base alloy containing chromium, molybdenum, columbium+tantalum, titanium, aluminum, and iron and having a thickness at least as great as a thickness of the wear coating; and said substrate being formed from a metallic material selected from the group consisting of aluminum and aluminum alloys.