Galvanic corrosion behaviour of carbon fibre reinforced polymer/magnesium alloys coupling. (September 2015)

• Record Type: Journal Article
• Authors: Pan, Yingcai; Wu, Guoqing; Cheng, Xu; Zhang, Zongke; Li, Maoyuan; Ji, Sudong; Huang, Zheng
• Is Part Of: Corrosion science. Volume 98(2015)
• Page Start: 672
• Page End: 677
• Publication Date: 2015-09
• Subjects: A. Magnesium -- A. Polymer -- B. SEM -- C. Kinetic parameters -- C. Oxide coatings; Corrosion and anti-corrosives -- Periodicals; 620.11223
• DOI: 10.1016/j.corsci.2015.06.024
• Languages: English
• ISSNs: 0010-938X

Abstract

Highlights: The coupling of T300/648 and Mg–Li shows a large driving force for galvanic corrosion. The galvanic activity of T300/648 coupled to Mg–Li increases with the increase of Li. The duration of the current instability in T300/648 and magnesium coupling increases with the increase of Li. The micro-arc oxidation film with double-layer exhibit good inhibiting effect on galvanic corrosion. Abstract: The galvanic corrosion behaviour of carbon fibre reinforced polymer (CFRP, T300/648) in contact with different magnesium alloys (AZ31, LZ91 and LZ141) in a sodium chloride solution and the influence of micro-arc oxidation (MAO) film on the corrosion behaviour of CFRP/magnesium alloys coupling were investigated using the electrochemical method. The results showed that the galvanic activity of CFRP/magnesium alloys coupling increased with the increase of lithium concentrations. The duration of the inhibitory effect of MAO film on the corrosion of CFRP/Mg–Li coupling is longer than that of CFRP/Mg–Al coupling due to its double-layer structure.