Preparation of Al-Mg-Sn-Ga alloy as aluminium batteries anode and investigation of corrosion behavior in NaCl solution

The electrochemical behavior of specified aluminium alloys, due to their usage in cathodic protection systems and batteries such as aluminium batteries, has always been considered. The aim of this study was to design an aluminium alloy for use as an anode in aluminium batteries with saline electrolytes. Aluminium alloy with Al-Mg-Sn-Ga structure was made by stir casting technique and corrosion behavior of this alloy was evaluated using different techniques. Microstructural studies were made using optical microscopy and scanning electron microscopy. It is known that the tin particles may be either in solid solution or may be segregated as second phase particles or intermetallic compounds in the alloy and cause the active dissolution of alloy exhibiting anodic behavior. The results of immersion, open circuit and closed circuit potentials, hydrogen evolution, polarization, electrochemical impedance spectroscopy and anodic efficiency tests showed that in chloride containing mediums, alloy had an anodic behavior.