Scratch resistant electrically conductive aluminum coating
I need a conductive coating on aluminum that resists scratches. I have tried gold Alodine, ( AMS C5541 [withdrawn / link is to spec at TechStreet] both class 1A and 3), but they get scratched just by sliding parts on a desk. Is there something more scratch resistant? Would a Chromate work? Or is Chromate just a misnomer for Alodine?Chris Wagner
- San Jose, California
First of two simultaneous responses (2001)
Chromate is not a misnomer, it's a generic name for the MIL-C-5541 process. Alodine is one brand name. Aluminum can be electroplated with whatever metal would meet your needs, but that would be a far more expensive process than chromating.
Ted Mooney, P.E.
Pine Beach, New Jersey
Second of two simultaneous responses (2001)
Consider tin plating.Dado Macapagal
- Toronto, Ontario
Electroless nickel works well for this application.Todd Osmolski
- Charlotte, North Carolina, USA
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