Method of removing dielectric material from metal surface

摘要

A method of removing a dielectric coating from a surface of a conductive element comprises immersing the coated element in a basic solution, applying a dc current to the solution, and reversing the polarity of the dc current. Air is injected into the solution. Thereafter the conductive element is dipped into an acid bath. The basic solution is caustic and alkaline and in a stainless steel container and the conductive element is nickel and is carried by a copper rack.