Method For Treating Metallic Surfaces With an Alternating Electrical Current

Abstract

A method for providing enhanced corrosion protection of metallic components and surfaces when exposing the metallic component to a silicate medium while applying an AC (Alternating Current) current.

1 ) A method for treating a metallic surface comprising:
 contacting a metallic surface with a medium comprising at least one silicate, and;   providing an alternating current to the medium for a time and under conditions sufficient to improve the corrosion resistance of the metallic surface.   
     
     
         2 ) The method of  claim 1  wherein the silicate comprises sodium silicate. 
     
     
         3 ) The method of  claim 1  wherein the medium comprises water and at least one silicate. 
     
     
         4 ) The method of  claim 1  wherein the metallic surface comprises at least one member selected from the group consisting of zinc, zinc nickel, tin zinc, and zinc iron. 
     
     
         5 ) The method of  claim 1  wherein the providing comprises contacting the metallic surface with an alternating current while the metallic surface is at least partially in contact with the medium.