KR950000920A - Method for reducing erosion wear between contact surfaces - Google Patents

Abstract

The present invention relates to the prevention of erosion wear of nickel, cobalt or titanium alloys by coating the surface with a copper-aluminum alloy.

Description

Method for reducing erosion wear between contact surfaces

Since this is an open matter, no full text was included.

1 shows the results of a comparison of erosion tests performed on an uncoated nickel support, which support has a conventional anti-erosion coating, which support has an anti-erosion coating of the present invention.

Claims (20)

A method of reducing erosion wear between contact surfaces at temperatures between about 537.8 ° C. (1000 ° F.) and 676.7 ° C. (1250 ° F.), wherein at least one of the contact surfaces is essentially from about 88 to about 96 weight percent copper, Applying a coating consisting of about 4 to about 8 weight percent aluminum and 0 to about 4 weight percent silicon, contacting the surface and causing relative movement between the surfaces at the temperature. The method of claim 1 wherein the contact surface is selected from the group consisting of nickel, cobalt and titanium alloys. The method of claim 2, wherein the coating is deposited by physical vapor deposition and is about 0.1 to about 4 mils thick. 4. The method of claim 3, wherein the coating is about 0.75 to about 1.5 mils thick. The method of claim 4 wherein the surface is a nickel-based alloy. 6. The method of claim 5 wherein the coating consists essentially of about 92% copper and about 8% aluminum. 7. The method of claim 6 wherein the coating is applied by cathode arc attachment. 8. The method of claim 7, wherein the coating consists of about 92.5% copper and about 7.5% aluminum. A method of transferring force between the fold components of a jet engine, which essentially applies a coating consisting of about 88 to about 96 weight percent copper, about 4 to about 8 weight percent aluminum, and 0 to about 4 weight percent silicon and Contacting the surface and applying a force to one of the parts at a temperature of about 537.8 ° C. (1000 ° F.) to 676.7 ° C. (1250 ° F.). 10. The method of claim 9, wherein the contact component is a metal selected from the group consisting of nickel, cobalt and titanium alloys. The method of claim 10, wherein the coating is attached by physical vapor deposition and is about 0.1 to about 4 mils thick. The method of claim 11, wherein the coating is about 0.75 to about 1.5 mils thick. 13. The method of claim 12, wherein the part is a nickel-based alloy. The method of claim 13, wherein the coating consists essentially of about 92% copper and about 8% aluminum. The method of claim 13, wherein the coating consists essentially of about 92.5% copper and about 7.5% aluminum. As an erosion-fatigue resistant compressor airfoil route for use at temperatures from about 537.8 ° C. (1000 ° F.) to 676.7 ° C. (1250 ° F.), which is an air foil root of a metal selected from the group consisting of nickel, cobalt, and titanium alloys. Wherein the surface thereof has a coating of an alloy consisting essentially of about 88 to about 96 weight percent copper, about 4 to 8 weight percent aluminum, and 0 to about 4 weight percent silicon, wherein the coating is about 0.1 to about 4 weight percent Wheat foil airfoil root. The airfoil route of claim 16, wherein said route is a nickel-based alloy and said coating consists essentially of about 92% copper and about 8% aluminum. 18. The airfoil route of claim 17 wherein the coating is about 0.75 to about 1.5 mils thick. The airfoil route of claim 16, wherein the coating consists essentially of about 92.5% copper and about 7.5% aluminum. 20. The airfoil route of claim 19, wherein the route is comprised of a nickel base alloy and the coating is about 0.75 to about 1.5 mils thick. ※ Note: The disclosure is based on the initial application.