Guys I’m working on building some CF parts that will be in contact with other metals. Does the CF break down or the metals? Any metals worse then others? Any epoxy for infusion that helps the issue?
Forgot to add both the CF and Metals will be in fresh water and salt water together.
Thanks
CBC
yes… corrosion could be an issue.
aluminum is way on the other side… so you’d have to use some glass between it and the carbon. Titanium is the way to go and there are also stainless steels that are good for composites.
I believe I read about a coating material for bonding metals to carbon, but haven’t ever used anything like that.
Even if you have titanium touching the carbon, if there is another metal in circuit with the titanium (say aluminum) you can still get corrosion. Water will conduct electricity between anything nearby, so you’ll need to completely cover the carbon part with fiberglass, seal the edges, and anodize any reactive metal nearby as well. That wont stop corrosion, but it’ll slow it down.
Ran into this article by chance…
http://www.compositesworld.com/blog/post/-optimizing-fasteners-for-cfrp-automotive-parts
So it’s the metal that will get electolisis