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"Anodize/plating for Al to resist bromides"
Is anyone aware of an anodize or plating for aluminum (6061-T651) that would resist the corrosive effects of bromides, specifically HgBr and CsBr. So far I have eliminated a hard chrome anodize and a nickel plating. Interestingly enough, a thin film sulfuric acid anodize has held up quite well, but I have not tested long term exposure as of yet. We are trying to reduce cost in one of our assemblies by eliminating the use of SS.
- Urbana, Illinois, USA
First of two simultaneous responses --
High phosphorous electroless nickel plating will work well for this application.Todd Osmolski
- Charlotte, North Carolina, USA
Second of two simultaneous responses --
Chrome absolutely would not work. Electroplated nickel probably would not be a lot better. Did you try electroless nickel? about 0.001"? That should have worked. If anodize works, I would look for someone that would run it at 65F and about 20 volts. It will be a lot thicker and denser. You might give hard anodizing a try-Say 0.0005 to 0.001 per side.It is much denser.James Watts
- Navarre, Florida
Check out hard anodising (no seal) followed by thermoplastic impregnation into the pores.John Tuohy