COSMETIC ANODIC OXIDE COATINGS

摘要

The embodiments described herein relate to anodizing and anodized films. The methods described can be used to form opaque and white anodized films on a substrate. In some embodiments, the methods involve forming anodized films having branched pore structures. The branched pore structure provides a light scattering medium for incident visible light, imparting an opaque and white appearance to the anodized film. In some embodiments, the methods involve infusing metal complex ions within pores of an anodized. Once within the pores, the metal complex ions undergo a chemical change forming metal oxide particles. The metal oxide particles provide a light scattering medium for incident visible light, imparting an opaque and white appearance to the anodized film. In some embodiments, aspects of the methods for creating irregular or branched pores and methods for infusing metal complex ions within pores are combined.

主权项

1. A metal part, comprising:
a protective film disposed over a metal surface of the metal part, the protective film comprising:
an anodic film having a top surface corresponding to a top surface of the part, the anodic film comprising pores having top ends adjacent to the top surface and bottom ends adjacent to the metal surface, wherein at least a portion of the pores have metal oxide particles infused therein, wherein the metal oxide particles provide a light scattering medium for diffusely reflecting visible wavelengths of light incident on the top surface and imparting a white appearance to the anodic film.