Pretreatment of Thick-Film Aluminum Electrode for Metal Plating

摘要

Provided is a method for pretreatment of a thick-film aluminum electrode. The pretreatment is processed before subsequent metal plating. The thick-film aluminum electrode is pretreated with purely mechanical or chemical treatment or a mixture of mechanical and chemical treatment. The chemical treatment is alkaline/acid cleaning or chemical anodization, and a surface of the thick-film aluminum electrode is even and becomes alumina. Moreover, a nonconductive material on the surface is removed. The thick-film aluminum electrode has a surface that is flat and has low oxygen content. The thick-film aluminum electrode has quality similar to a thick-film electrode of precious metal silver for subsequent metal plating.