HIGH-TEMPERATURE COATINGS AND BULK ALLOYS WITH PT METAL MODIFIED ?-Ni+?'-Ni3Al ALLOYS HAVING HOT-CORROSION RESISTANCE

摘要

An alloy including a Pt-group metal, Ni and Al, wherein the concentration of Al is limited with respect to the concentration of Ni and the Pt-group metal such that the alloy includes substantiailly no ß-NiAl phase, and wherein the Pt-group metal is present in an amount sufficient to provide enhanced hot corrosion resistance.