| Abstract Scope |
A novel Cu-Ga-In ternary alloy is developed which consists of interdendritic liquid-phase at room temperature. Unlike conventional hard reinforcement, the liquid-phase enhances the mechanical and wear performance of Cu-Ga-In alloys, also deflects the tip, and provides self-healing. These alloy systems can be potentially used in x-ray, gamma, and microwave radiation absorbers for medical, defense, and marine applications. In the present study, the effect of liquid-phase on corrosion and passivation behavior of Cu-Ga-In alloys is studied using electrochemical impedance spectroscopy, potentiodynamic polarization, cyclic polarization, and post-corrosion characterization techniques. The electrochemical analysis reveals that the presence of liquid-phase significantly reduces corrosion resistance, but improves the passivation. Meanwhile, higher concentration of solute Gallium and Indium in the alloys promotes dealloying and the copper is redeposited on the surface. The study shows that increase in copper content reduces the susceptibility of corrosion in Cu-Ga-In alloy system. |