Influence of microstructure of carbon fibre reinforced polymer on the metal in contact

Chi Zhang; Dajiang Zheng; Guang-Ling Song; Yang Guo; Ming Liu; Hamid Kia

Journal of Materials Research and Technology (Jan 2020)

Influence of microstructure of carbon fibre reinforced polymer on the metal in contact

Chi Zhang,
Dajiang Zheng,
Guang-Ling Song,
Yang Guo,
Ming Liu,
Hamid Kia

Affiliations

Chi Zhang: Centre for Marine Materials Corrosion and Protection, State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Materials, Xiamen University, 422 S. Siming Rd., Xiamen 361005, China
Dajiang Zheng: Centre for Marine Materials Corrosion and Protection, State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Materials, Xiamen University, 422 S. Siming Rd., Xiamen 361005, China
Guang-Ling Song: Centre for Marine Materials Corrosion and Protection, State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Materials, Xiamen University, 422 S. Siming Rd., Xiamen 361005, China; Corresponding author.
Yang Guo: China Science Lab, GM Global R&D, 56 Jinwan Road, Shanghai, China
Ming Liu: China Science Lab, GM Global R&D, 56 Jinwan Road, Shanghai, China
Hamid Kia: Chemicals and Materials Science Lab, GM Global R&D, 30500 Mound Road, Warren, USA

Journal volume & issue: Vol. 9, no. 1
pp. 560 – 573

Abstract

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The influence of the microstructure of carbon fibre reinforced polymers (CFRPs) with epoxy matrix (E-CFRP) and nylon matrix (T-CFRP) on the galvanic behaviour of DP590 steel, 6022-aluminium alloy, 1040-steel and AZ31-magnesium alloy was investigated in the GMW14872 solution. The E-CFRP/metal couples were initially more galvanic corrosion resistant, but their galvanic corrosion gradually became more severe than the T-CFRP/metal couples. The effective micro-defects in the surface polymer layer of the CFRP samples critically determined the galvanic corrosion. A detailed surface layer model was proposed, the electrochemical processes through the surface polymer layers during galvanic corrosion were discussed. A better understanding on the microstructure of CFRP determined by composites manufacture process can be obtained. Keywords: Carbon fibre reinforced polymer (CFRP), Composite, EIS, Galvanic corrosion, Defect

Published in Journal of Materials Research and Technology

ISSN: 2238-7854 (Print); 2214-0697 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Technology: Mining engineering. Metallurgy
Website: https://www.journals.elsevier.com/journal-of-materials-research-and-technology/

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