About this Abstract |
Meeting |
MS&T21: Materials Science & Technology
|
Symposium
|
Advanced Materials for Harsh Environments
|
Presentation Title |
Assessment of Conductive Sites on Carbon Fiber Reinforced Polymer Composite Using Different Electrochemical Experimental Methods |
Author(s) |
Priyanka Adapala |
On-Site Speaker (Planned) |
Priyanka Adapala |
Abstract Scope |
Light metals and composite materials are being adopted by the automotive industry to improve fuel efficiency. Closure panels made from Al alloy and carbon fiber reinforced polymer (CFRP) are being considered as a replacement for the standard all-steel design. A concern is that galvanic contact between the two materials will accelerate Al corrosion. The carbon fiber fillers are noble and conductive but are protected by the polymer matrix. However, the polymer cover is non-uniform due to various process variables. Any exposed fibers can be strong cathodes in a galvanic couple with Al, resulting in accelerated dissolution of Al. Rotating disk electrode experiments are performed to evaluate the kinetics of the electrochemical active sites and Cu electrodeposition is performed to locate and quantify conductive sites on CFRP. The observations are correlated with electrochemical behavior of CFRP. |