Patent ID: 6410154
Filing Date: 2002-06-25
Classification: C23C

Abstract:
A product comprising a substrate comprising a TiAl-base alloy; and a surface part formed on the substrate, said product produced byintroducing into a fluidized bed furnace a treating reagent consisting essentially of an oxide of at least one element selected from the group consisting of niobium (Nb), tantalum (Ta), chromium (Cr) and tungsten (W), and a powdery refractory; introducing a fluidizing gas thereinto to fluidize the treating reagent; disposing a TiAl-base alloy, which has an Al content of from 15 at. % to 55 at. % in the fluidized bed furnace; and heating the TiAl-base alloy in an inert gas at a temperature of from 400Â° C. to 1450Â° C.