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MICROCRYSTALLINE ANODIC COATINGS AND RELATED METHODS THEREFOR

  • US 20160160372A1
  • Filed: 02/11/2016
  • Published: 06/09/2016
  • Est. Priority Date: 05/19/2010
  • Status: Active Grant
First Claim
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1. A method of coating an anodized aluminum substrate comprising:

  • immersing the anodized aluminum substrate in a first aqueous metal salt solution comprising at least one metal cationic species for a first predetermined length of time to form a partially impregnated aluminum substrate;

    immersing the partially impregnated aluminum substrate in an alkaline solution for a second predetermined length of time to form a fully impregnated aluminum substrate; and

    immersing the fully impregnated aluminum substrate in a second aqueous metal salt solution comprising at least one metal acetate and having a pH in a range of from about 5 units to about 6 units for a third predetermined length of time to form a coated anodized aluminum substrate.

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