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Letter 23083
Bench-top blackening of aluminum alloy
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Part of a medical product I'm working on consists of a subassembly
of some aluminum alloy parts, together with optical glass fibers. I
need to blacken the aluminum alloy after creating the assembly.
Consequently, I need a bench-top process for blackening; preferably
one that does not adhere to glass. Blackening the aluminum before
assembly doesn't work because the end of the glass fiber must be
polished, and this removes any finish from the surrounding metal. Any
suggestions would be appreciated.
Francis Dudley
- Torrance, California, U.S.A.
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If all you need is to have the aluminum look black, then there is
a product called Alumablack TM [Birchwood Laboratories] that may be
of help to you. If you need corrosion protection also then that
product would probably not cut it. How intensive is the polishing
process - Would an anodize (hard or type II) stand up to it?
Good luck,
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