| 摘要 |
<p>An improved process and composition for chemically stripping metallic deposits from a substrate, and particularly, from the contact tips of electroplating racks and like apparatus to maintain proper operating efficiency thereof. The improved composition and method employs an aqueous acidic solution containing nitric acid, chloride ions and manganous ions present in an amount sufficient to accelerate the initiation of and the rate of stripping of the metallic deposits. The method and composition are applicable for chemically stripping a variety of metallic deposits at stripping rates substantially higher than those heretofore attainable with prior art compositions and techniques.</p> |
