METHOD FOR FORMING ALUMINIDE-YTTRIUM COMPOSITES COATINGS OF NICKEL BASE SUPERALLOY

摘要

The composite coated layer is prepared by coating aluminide on nickel base superalloy by the pack cementation method and plating yttrium by the ion plating method; heating the composite coated layer of aluminide-yttrium under inert gas for 2hrs at 1000-1300deg.C.