Method for cathodically treating an electrically conductive zinc surface
AssigneeElisha Technologies Co LLC
InventorsRobert L. Heimann, William M. Dalton, John Hahn, David M. Price
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Abstract
The disclosure relates to a process for forming a deposit on the surface of a metallic or conductive surface. The process employs an electrolytic process to deposit a mineral containing coating or film upon a metallic or conductive surface.
Claims20
An electrically enhanced method for treating a zinc containing metal surface comprising:
- contacting the metal surface with a medium comprising a combination comprising water and greater than 2 wt. % of at least one water soluble silicate,
- establishing an electroyltic environment, wherein the metal surface is employed as a cathode, at a rate and period of time sufficient for the surface to form a layer upon the surface.
A method for improving the corrosion resistance of an electrically conductive zinc containing surface comprising:
- anodically cleaning the surface,
- contacting the surface with a medium wherein said medium comprises a combination comprising water and at least one water soluble alkali silicate,
- establishing an electroylic environment wherein said surface is employed as a cathode to form a layer having improved corrosion resistance in comparison to the surface.
A cathodic method for improving the corrosion resistance of a zinc containing metal surface comprising:
- exposing the metal surface to an aqueous silicate containing medium,
- establshing an electrolytic environment wherein the metal surface is employed as a cathode,
- passing a current through the silicate medium and the metal surface for a period of time and under conditions sufficient to form a corrosion resistant mineral surface upon the metal surface.
A cathodic method for treating a zinc containing metal surface comprising:
- preparing a medium wherein said medium comprises a combination comprising water and at least one water soluble silicate,
- establishing an electrolytic environment within the medium wherein the metal surface is employed as a cathode,
- exposing at least a portion of the metal surface to the medium for a period of time and under conditions sufficient to cause an interaction between at least a portion of the medium and the metal surface;
- recovering the treated containing metal surface.
Dependencies are inferred from the claim text.