Making an oxide dispersion strengthened nickel-based superalloy

A method of producing an oxide dispersion strengthened nickel-based superalloy by introducing a powdered oxide dispersoid material 45 into a plasma gun 42 of a plasma spray apparatus, where it sublimes, and introducing a nickel-base superalloy powder 46 into the plasma spray apparatus at a cooler location 43, downstream of the plasma gun 42. The oxide dispersoid material condenses on the superalloy powder to produce oxide dispersion strengthened nickel-base superalloy powder. This powder is mixed with virgin superalloy powder and then formed into a component such as a turbine disc by isostatic pressing, extrusion, forging or heat treatment. Y2O3and HfO2are disclosed oxide dispersoid materials.

A method of producing an oxide coated nickel-base superalloy and a method of producing an oxide dispersion strengthened nickel-base superalloy