i'm just posting this because i find it interesting...i realize we're way past the OP's question. from Boeing (who, i assume, know what they're talking about):

"Fiber-reinforced plastics are corrosion resistant, but plastics reinforced with carbon fibers can induce galvanic corrosion in attached aluminum structure."

http://www.boeing.com/commercial/aer...7/corrosn.html

you learn something new every day.