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About Prof. Dr. A. Nityananda Shetty

Department of Chemistry, National Institute of Technology Karnataka, Surathkal, Post Srinivasnagar, Mangalore-575025 Karnataka, India E-mail: nityashreya@gmail.com

Please find bellow all articles from this author which were published in our journal. Lists with articles the author published in our or other journals, can be found at the following databases:

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Electrochemical Investigation on the Corrosion Behaviour of Mg-Al-Zn-Mn (GA9) Alloy in Sodium Chloride Medium

Fig. 2: Nyquist plots for the corrosion of GA9 magnesium alloy in different concentrations of NaCl solutions at 40°C

The corrosion behavior of Mg-Al-Zn-Mn (GA9) alloy in sodium chloride solutions was studied over a range of concentrations and solution temperatures by electrochemical techniques like potentiodynamic polarization (PP) and electrochemical impedance spectroscopy (EIS). The studies were carried out in solutions with NaCl of concentrations between 0.1M – 2M; and at different temperatures in the range of 30 C – 50 C. The studies have revealed that the corrosion rate of GA9 magnesium alloy increases with the increase in temperature and also with the increase of NaCl concentration in the medium. Activation parameters like activation energy, enthalpy of activation and entropy of activation for evaluation of the corrosion process were calculated. The results from both the techniques are in good agreement with each other. The alloy surface morphology was studied before and after corrosion using scanning electron microscopy (SEM).