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galvanic corrosion between Al and Ti

galvanic corrosion between Al and Ti

galvanic corrosion between Al and Ti

(OP)
I have a pneumatic motor design with Titanium and 6061-t6 Al in contact. I'm concerned with galvanic corrosion of the aluminum. Al and Ti have a .6V difference in Anodic Index. (.25V is recomended for "normal" environments, .5V for controlled environments)The tolerances on the Aluminum are such that I can't anodize and be assured of holding the tolerances. Will Alodine protect the aluminum? The parts will be in contact with air mixed with hydraulic oil. Will corrosion still be a concern? Can you recommend an information source?

Thanks

RE: galvanic corrosion between Al and Ti

You need water for this type of corrosion.  *IF* the oil has very low moisture, you'll be OK.

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