Does anyone know whether black-chromated zinc-iron electroplating
(~1% Fe) has a similar current potential value to that of chromated electroplated cadmium?
Marc Pepi US Army Research Lab - APG, Maryland
A conversion coating "neutralizes" the charges on the surface of the metal, so I don't know what you could do with a number like that. Then I would have to ask, In what medium? Sea water, fresh water, in a soil, in salt spray, in Coca Beach, then, On what base metal?, steel, zinc, Aluminum. I suppose that you could measure the potential against a calomel electrode in some artificial seawater as a start.
Tom Pullizzi Falls Township, Pennsylvania
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