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Corrosion behavior of a five-layer Al alloy composite plate in NaCl solution.
- Source :
- Anti-Corrosion Methods & Materials; 2023, Vol. 70 Issue 2, p86-91, 6p
- Publication Year :
- 2023
-
Abstract
- Purpose: This paper aims to investigate the electrochemical corrosion behavior of a five-layer Al alloy composites (4343/4047/3003/4047/4343) with a thickness of 0.2 mm in NaCl solution. Design/methodology/approach: Electrochemical impedance spectroscopy, polarization curve and morphology analyses were used to study the corrosion behavior of the Al alloy composites from cross-sectional and plane directions. Findings: The corrosion resistance of the surface from the plane direction was higher than that from the cross sections. Si-enrich particles were observed in the outer 4047/4343 layer, and AlFeCuMnBi phases were identified in the core 3003 layer. The galvanic coupling between the Si-enrich particle and the Al matrix accelerated the dissolution Al matrix. Originality/value: This work lays the experimental foundation for corrosion mechanism of the Al alloy composite plate. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00035599
- Volume :
- 70
- Issue :
- 2
- Database :
- Complementary Index
- Journal :
- Anti-Corrosion Methods & Materials
- Publication Type :
- Academic Journal
- Accession number :
- 161739572
- Full Text :
- https://doi.org/10.1108/ACMM-12-2022-2738