Effect of carbon addition on dissolution behavior of aluminum alloy sacrificial anode

Abstract

Using potentiodynamic polarization and immersion corrosion and sacrificial anode material discharge performance testing methods studied the dissolution behavior of aluminum anode material in the working condition of simulated Northwest oilfield corrosion conditions. The research results show that carbon can reduce the corrosion potential of aluminum anode material and anode current density increase, which can improve the material corrosion dissolution performance. Immersion corrosion test results show that with the carbon content in ascension, to enhance the anode material of aluminum anode material of uniform dissolving ability, passivation phenomenon was significantly suppressed. Adding carbon anode materials to add up the uniform’s ability to dissolve, eliminate the phenomenon of local corrosion of anode material and the discharge efficiency is greatly increased, effectively solve the aluminum anode material in high temperature environment to serve the current efficiency degradation of field engineering problems.