![]() These process solutions are formulated so as not to cause deleterious pitting or preferential etching. However, many process solutions intentionally exceed this pH range for the purpose of cleaning, metal removal and subsequent smut removal. The protective oxide film of aluminum is only stable in a pH range of 4.5 -8.5. Selective Electroplating's Role in RemanufacturingĪluminum corrosion is commonly encountered when performing chemical process operations involving surface finishing, predominantly in preparation for paint application.
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