Niobium carbide alloy coating process for improving the erosion resistance of a metal surface
OwnerEdward R. Buchananinventor
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Abstract
A method of improving the erosion resistance of the surface of a metal substrate by the technique of applying a dense and adherent alloy coating comprised of niobium carbide in a ductile matrix such as cobalt-chromium to the substrate surface using a hypersonic flame spray gun.
Claims22
A process for improving the erosion resistance of the surface of a metal substrate by the technique of applying a powder comprised of niobium carbide in a matrix of a ductile metal alloy, said ductile metal alloy consisting essentially of cobalt and chromium, to the substrate surface by hypersonic flame spray coating at a velocity of 1,500 to 3,500 ft/sec, whereby a dense and adherent alloy coating is formed on said substrate.
A process for improving the erosion resistance of the surface of a metal substrate by the technique of applying a powder comprised of niobium carbide in a matrix of a ductile metal alloy, said ductile metal alloy consisting essentially of about 4 percent aluminum and about 25 percent chromium, with balance essentially iron, to the substrate surface by hypersonic flame spray coating at a velocity of 1,500 to 3,500 ft/sec, whereby a dense and adherent alloy coating is formed on said substrate.
A process for improving the erosion resistance of the surface of a metal substrate by the technique of applying a powder comprised of niobium carbide in a matrix of a ductile metal alloy, said ductile metal alloy consisting essentially of about 20 percent chromium, with the balance essentially nickel, to the substrate surface by hypersonic flame spray coating at a velocity of 1,500 to 3,500 ft/sec, whereby a dense and adherent alloy coating is formed on said substrate.
Dependencies are inferred from the claim text.