Carbon-fiber reinforced polymer (CFRPs) composites can drive galvanic corrosion of other metals with which they are in contact such as aluminum alloys (AAs) when exposed to aggressive environments. In these galvanic couples, CFRP behaves as a cathode, owing to the noble nature of carbon, whereas the coupled metal behaves as an anode that undergoes accelerated deterioration. To be able to control the corrosion, it is critical to understand the electrochemical activity of CFRP. In this work, a copper deposition technique was developed to quantify the extent of electrochemical activity and identify the exact location of electrochemically active sites on the CFRP. Optimization of the deposition parameters was performed by focused ion beam sectioning and viewing the Cu-deposited cross sections in a scanning electron microscope (SEM). Quantification of the electrochemically active area was done through large-area imaging by SEM and optical microscopy and image analysis. The top surfaces and cross sections of deposit/CFRP interfaces were investigated by viewing at high magnification to evaluate polymer coverage and surface defects.
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1 October 2024
Research Article|
August 13 2024
Assessment of Conductive Sites on Carbon-Fiber Reinforced Polymer
Priyanka Adapala
;
Priyanka Adapala
‡
*Fontana Corrosion Center, Columbus, Ohio 43210.
‡Corresponding author. E-mail: [email protected].
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Gerald S. Frankel
Gerald S. Frankel
*Fontana Corrosion Center, Columbus, Ohio 43210.
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‡Corresponding author. E-mail: [email protected].
Online ISSN: 1938-159X
Print ISSN: 0010-9312
© 2024, AMPP
2024
CORROSION (2024) 80 (10): 990–997.
Citation
Priyanka Adapala, Gerald S. Frankel; Assessment of Conductive Sites on Carbon-Fiber Reinforced Polymer. CORROSION 1 October 2024; 80 (10): 990–997. https://doi.org/10.5006/4604
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