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Anti-seize between the parts. Surface coating (paint or plating/anodizing- the zinc in zinc-plated parts becomes sacrificial and hard-anodized aluminum is not conductive) on both parts. Keep parts as dry as possible.
Car and trailer manufacturers use non-conductive plastic tape. Not possible if we're talking wheel/hub interface, so that's where the anti-seize/surface coating comes in.
If the part is immobile, like an alloy strut brace, you can ground a zinc anode to the aluminum and replace it when necessary. It'll corrode rather than the steel of the body, nuts, or studs and the alloy of the strut brace.
PS- it's called galvanic corrosion and there's a ton about it on the 'net. Lots and lots of solutions out there.
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02-05-2021, 08:21 AM
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