Method of producing oxide ceramic layers on barrier layer-formin

Details Method of producing oxide ceramic layers on barrier layer-formin Method of producing oxide ceramic layers on barrier layer-formin

1996-06-07

1998-09-22

Speer, Timothy M.

Stock material or miscellaneous articles

Composite

Of metal

428472, 4284721, 4284722, B32B 1504

Patent

active

058111948

ABSTRACT:
A method of producing oxide ceramic layers on Al, Mg, Ti, Ta, Zr, Nb, Hf, Sb, W, Mo, V, Bi or their alloys by a plasma-chemical anodical oxidation in a chloride-free electrolytic bath having a pH value of 2 to 8 and a constant bath temperature of -30.degree. to +15.degree. C. A current density of at least 1 A/dm.sup.2 is maintained constant in the electrolytic bath until the voltage reaches a predetermined end value.

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