Passivation method

Details Passivation method Passivation method

A - Human Necessities

61

L

A61L 27/00 (2006.01) A61F 2/02 (2006.01) A61L 27/04 (2006.01) C23C 22/05 (2006.01) C25D 11/02 (2006.01)

Patent

CA 2072189

ABSTRACT PASSIVATION METHOD The invention provides novel passivated implants and passivation methods that provide superior corrosion resistance and surface performance characteristics ad compared to conventional nitric acid passivation. The method uses either the spontaneous or galvanic passivation of metallic prosthetic implants in aqueous alkali salt solution containing non-aggressive oxyanions to produce a thin and uniform passive coating on the metal implant, thereby rendering the implant more stable in the biological environment.

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