engleski

Influence of NaCl concentration on pitting corrosion of extruded Al–Mg-Si alloy AA6060

In this study the corrosion behavior of commercial extruded Al-Mg-Si alloy AA6060 was investigated in NaCl solutions of different concentrations using anodic potentiodynamic polarization measurements under deaerated conditions at room temperature. Results have shown that Epit -dependence on Cl- - ion concetration follows the linear relationship in the interval 0.35 wt. %-5 wt. %. Fe-rich intermetallic particles heterogeneously distributed in the surface of the samples were identified as cathodic phases which promote pitting corrosion by local anodic dissolution of Al-matrix.

pitting corrosion ; commercial Al-Mg-Si alloy ; deaerated NaCl

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