Effect of Li on the Corrosion Behavior of Al-Cu/SiCp Composites

Jesús Lugo-Quintal; Luis Díaz-Ballote; Lucien Veleva; Antonio Contreras-Cuevas

doi:10.4028/www.scientific.net/AMR.68.133

Paper Titles

Impedance Response of Franklinite Films to Humidity and Propane
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Friction Stir Linear Welding of an Aluminum Alloy
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Annealing Effect on Microstructure and Coercivity of YCo₅ Nanoparticles Obtained by Mechanical Milling
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Joining of WC-Co to Ni by Direct Diffusion Bonding
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Effect of Li on the Corrosion Behavior of Al-Cu/SiC_p Composites
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Magnetic and Electronic Properties of the Compound Y(Co,Fe)₅ Calculated by the Augmented Spherical Wave Method
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Comparative Study of Corrosion in Physiological Serum of Ceramic Coatings Applied on 316L Stainless Steel Substrate
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Characterization of Galvannealed HSLA Steels
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Characterization of Friction Stir Welding on Aluminum
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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 68Effect of Li on the Corrosion Behavior of...

Effect of Li on the Corrosion Behavior of Al-Cu/SiC_p Composites

Abstract:

The corrosion behavior in NaCl solutions at different pH values of Al-Cu-Li/SiCp and Al-Cu/SiCp composites fabricated by co-spraying technique was studied. The corrosion behavior of the composites was also compared with the corrosion behavior of pure aluminum. Corrosion potential measurements and potentiodynamic polarization were used to elucidate the corrosion behavior of the composites. In addition the microstructure and morphology of the composites were studied through X-ray diffraction (XRD) and scanning electron microscope (SEM). It was found that the corrosion rate of Al-Cu-Li/SiCp and Al-Cu/SiCp composites was higher than corrosion rate of pure aluminum for all NaCl solutions tested. Both composites and pure aluminum showed the typical “U” behavior of the corrosion rate as a function of pH. The addition of lithium had little effect on the corrosion behavior of the composites.