Hello,

I want to assemble à Wing (hydrofoil) onto a 1 inch carbon tube. I wanted to wrapp an aluminium plate with carbon fiber around the tube so to be able to drill and bolt into the aluminium.

I see there can be some galvanic corrosion. What should i do to isolate the aluminium? Would a simple coat of resin be enough ? Is there some minimum thickness ?

These could be out at sea... And although the AL is going to be into the part, the bolts (stainles steel) are going to be into the Al...

Is there the same problem with brass ?

regards

Thanks for the videos and all of the site. It is very "pro".

Franck

Certain aluminium alloys are considered "sea-water proof"  or "Sea-water resistant"  They tend to resist the galvanic corrosion from stainless bolts quite well, but not perfectly, so a very "gooey" insulating mounting paste is usually used when mounting the bolts.  

We tend not to think about it but certain conditions can also corrode the Carbon fibre itself ...   and some of the resins we employ in CF composites are in reality slightly porous, and can sometimes absorb water..

If you are using CF composites in a sea-water environment, it always pays to protect it with at least a high quality Marine clear coat.
 
   

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