Method for Cleaning Metal or Metal Alloy Surfaces

摘要

A method for cleaning a surface of a metal or metal alloy body by immersing the surface in a basic aqueous electrolyte containing carbonate ions, and flowing DC current through the body to make the body anodic. After a time, the flow of DC current is stopped and the surface is removed from the electrolyte. The surface is then rinsed off to remove dirt, corrosion, coatings, and the like from the surface. The surface can then be dried and, if desired, coated for reuse of the body

主权项

1. A method for cleaning a surface of a metal or metal alloy body, the method comprising the steps of:
(a) wetting the surface of the body with an aqueous electrolyte, the electrolyte comprising a dissolved carbonate salt and having a pH greater than 7; (b) making the body anodic by flowing DC current through the body concurrently with step (a), the flow of DC current being not less than 200 amperes; and (c) stopping the flow of the DC current after flowing the DC current for not less than 2 minutes.