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emc-pstc list, I have a question concerning Zincor, which I think is a trade name for steel coated with zinc. The zinc will protect the steel (iron) from oxidation. Because it is lower in the electrochemical table zinc oxide will protect the iron. The steel is coated with a thickness of 2.5 to 5 microns (data from manufacturers). The question is about a zincor chassis which we want to contact with Be Cu fingers. Do the fingers penetrate the zinc oxide in a reproducible and consistent manner? When we install the fingers they penetrate because the radiated emissions of a fire-wire cable are reduced by about 10-15dB. But this is but a snapshot of the present situation. We do not know if the BeCu finger to Zincor chassis contact is reproducible and maintains good performance in a office environment over a life time of at least 1 year or more. I can imagine that EMC engineers have encountered similar problems before. Any experience, lessons learned or published literature to share?? Kind regards, Jan Vercammen
