Protective coatings for metal parts to be used at high temperatu

Electrolysis: processes – compositions used therein – and methods – Product produced by electrolysis involving electrolytic...

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205171, 205175, 205224, 205229, 205917, C25D 1112, C25D 1134

Patent

active

051586630

ABSTRACT:
A method for producing protecting layers on a metal selected from aluminum, titanium and zirconium, or alloys thereof, involves at least two anodic oxidation steps producing oxide layers and a thermal treatment which is carried out before the last anodic oxidation step. The treated metal according to the invention is protected even at high temperatures and under conditions of thermal cycling.

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patent: 3864220 (1975-02-01), Denning
patent: 4039400 (1977-08-01), Hayfield
patent: 4052273 (1977-10-01), Aronson et al.
patent: 4481083 (1984-11-01), Ball et al.
patent: 4481084 (1984-11-01), Chen et al.
patent: 4781802 (1988-11-01), Fresia

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