Current Trends in Engineering Science
[ ISSN : 2833-356X ]
Corrosion Characterization of Aluminum 7075 Reinforced with Silicon Carbide Metal Matrix Composites (MMCs) in different Concentration of Phosphoric Acid Medium
Abstract
The corrosion behavior of Aluminium 7075 reinforced with SiC metal matrix composites was investigated in various concentrations of phosphoric acid solution at 250 C. The study was done by electrochemical method using polarization techniques (Tafel) and electrochemical impedance spectroscopy (EIS) technique. The surface morphology was studied using scanning electron microscope (SEM). The results exhibited that the Aluminium 7075 matrix experience intense corrosion in phosphoric acid medium. The corrosion rate of SiC reinforced Aluminium 7075 composites increases with an increase in the strength of an acid. The outcome obtained by Tafel polarization and electrochemical impedance spectroscopy (EIS) technique were in good agreement with each other