SELECTIVE ELECTROPOLISHING METHOD, APPARATUS AND ELECTROLYTE

摘要

A method, apparatus and electrolyte for selective electropolishing comprising a metallic workpiece that acts as an anode for selective electropolishing of an electropolishing area of a surface of the workpiece, an electrolyte medium applied to a predetermined depth on the electropolishing area and in electrical contact with the anode workpiece, and a cover that acts as a cathode positioned in electrical contact with the electrolyte medium. The electrolyte comprises a silica based colloid. A running current is applied with a power source through the cathode cover, electrolyte medium and anode workpiece to selectively electropolish the surface of the workpiece within the electropolishing area where the electrolyte medium is in contact with the workpiece surface.