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The influence of chloride concentration end electrolyte temperature on CuAlMnZn alloy corrosion in NaCl solution

The objective of this study was to investigate the influence of chloride ion concentration (from 0.1 to 1.5%) and temperature (from 20 to 40 °C) on corrosion behavior of CuAlMnZn alloy in NaCl solution stirred with a magnetic stirrer (150 rpm). Electrochemical techniques such as open circuit potential measurement, linear, potentiodynamic polarization and cyclic voltammetry methods have been applied. The results have been shown that increase in concentration and temperature of NaCl solution leads to a lowering open circuit potential values of alloy, increase in corrosion current density and a decrease in values of the polarization resistance. After polarization measurements, corroded electrode surfaces, were examined with an optical microscope.

CuAlMnZn ; corrosion ; polarization ; microscopy

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