Galvanic corrosion of polyacrylnitrile (PAN) and pitch based short carbon fibres in polyetheretherketone (PEEK) composites |
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| Authors: | Andreas Gebhard Thomas Bayerl Alois K. Schlarb Klaus Friedrich |
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| Affiliation: | aNanoProfile GmbH, Sauerwiesen 2, 67661 Kaiserslautern, Germany;bInstitute for Composite Materials (IVW GmbH), Technical University of Kaiserslautern, Erwin-Schrödinger-Strasse, Bldg. 58, 67663 Kaiserslautern, Germany;cDepartment of Mechanical and Chemical Engineering, Technical University of Kaiserslautern, Erwin-Schrödinger-Strasse, 67663 Kaiserslautern, Germany |
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| Abstract: | When an electric current is conducted through a short fibre reinforced polyetheretherketone composite, being in contact with a stainless steel electrode, carbon fibre corrosion occurs. Surface analysis shows that structural defects range from debonding events and fibre cracking in the early stage of the corrosion process to the final disintegration of the fibre. The extent of fibre corrosion is quantified by atomic force microscopy, and the influence of fibre type, fibre volume content and the aqueous medium on the fibre corrosion is reported. Overall, polyacrylnitrile based fibres have a higher corrosion resistance than pitch based ones. |
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| Keywords: | A. Polymer A. Stainless steel B. SEM C. Alkaline corrosion |
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