At high temperatures wear - and corrosion-resistant alloy and use thereof for the production of wear - and corrosion-resistant ueberzuegen on structural components

摘要

1283336 Cobalt based coating composition UNITED AIRCRAFT CORP 30 Jan 1970 [31 Jan 1969] 4685/70 Headings C7A and C7F An alloy composition comprises in per cent by weight: Cr 15-40 Al 10-25 Y and or R /E 0.01-1 Co balance The alloy may be used as a coating composition for nickel or cobalt based super alloys in the form of gas turbine engine components. The coating thickness is preferably at least 76À2 Á, and may be applied by melting the coating alloy under a vacuum in which is also placed the component to be coated. The component may be pre-heated to 954 Œ 10‹C. this temperature being maintained during coating. The coating may then be heated for 1 hour at 1038 Œ4‹C. under vacuum, dry glass bead peened, and thereafter heated to 1080 Œ 4‹C. in argon, hydrogen or under a vacuum.