Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1661244 | Surface and Coatings Technology | 2008 | 11 Pages |
Abstract
Laser surface melting (LSM), using a high power diode laser, was used to modify the electrochemical behaviour of A380/SiC/xxp aluminium composites in aerated 3.5Â wt.% NaCl solution. Corrosion mechanism was determined by potentiodynamic polarization, electrochemical impedance spectroscopy (EIS), scanning electron microscopy (SEM), scanning Kelvin probe force microscopy (SKPFM) and low-angle X-ray diffraction (XRD). Laser-treated surface revealed a refined microstructure with homogeneous microdendrites, good matrix/reinforcement bonding and absence of cathodic intermetallic compounds. As a result, laser treatment increased the surface hardness and reduced localised corrosion attack.
Related Topics
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Authors
F. Viejo, A. Pardo, J. Rams, M.C. Merino, A.E. Coy, R. Arrabal, E. Matykina,