Protective metal oxide films on metal or alloy substrate...

Details Protective metal oxide films on metal or alloy substrate... Protective metal oxide films on metal or alloy substrate...

C - Chemistry, Metallurgy

10

G

117/85

C10G 9/16 (2006.01)

Patent

CA 1139160

4697 ABSTRACT OF THE DISCLOSURE This case relates to a process for forming protective metal oxide films on metal or alloy substrate surfaces susceptible to coking, corrosion or catalytic activity. The process comprises first pre-oxidising the substrate surface and then depositing on the pre-oxidised surface a metal oxide of Ca, Mg, Al, Ga, Ti, Zr, Hf, Ta, Nb or Cr by vapour phase decomposition of a volatile compound of the metal which has at least one metal-oxygen bond. Nitrogen, helium, argon, carbon dioxide, air or steam may be used as carrier gases for the metal compound.

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