| 摘要 |
<p>A wet cleaning/passivation process for a passivatable metal part including a contiminant-bearing surface. The process includes the steps of: (a) contacting the contaminant-bearing part with an aqueous acid solution effective for pickling the contaminant-bearing surface of the contaminant-bearing part, with such contacting being conducted for sufficient time and at sufficient temperature to achieve pickling of the contaminant-bearing surface; (b) contacting the cleaned surface of the part with a passivating aqueous solution, with such contacting being conducted for sufficient time and at sufficient temperature to passivate the cleaned surface; and (c) CO2 blasting the surface, to remove micron and sub-micron particles from the surface.</p> |
