About 200 μm-thick 32.5Ni-38.5Co-21Cr-8Al-0.5Y (wt.%) coatings were sprayed onto Hastelloy-X using a high velocity oxyfuel spraying (HVOF) method, and were oxidized between 900 and 1100oC in air to study their oxidation behavior. The coating consisted mainly of Ni3Al with some Ni. Relatively thin scales were formed on the coating, due mainly to the formation of α- Al2O3. Additionally, some CoCr2O4 and Al5Y3O12 formed. Beneath the oxide layer, an Al-depleted zone existed.