The electrochemical behavior of the aluminum bronze in simulated electrolytes like those used in the industrial copper electrolysis process was investigated. Conventional electrochemical techniques including polarization techniques and electrochemical impedance spectroscopy were used. The alloywas found to be easier dissolved when the CuSO4-H2SO4 electrolytes contained 160 g L-1 sulfuric acid. A higher sulfuric acid concentration led to increase of polarization resistance and electrolyte resistance, and further caused the decrease of corrosion current density. The activation energy of the dissolution process was found to be 27 kJ mol(-1) assigning a diffusion controlled reaction. The impedance measurements and impedance data fitting to equivalent circuit models showed that the passive film formation proceeded via a dissolution/precipitation mechanism under open circuit condition. (C) 2017 The Electrochemical Society. All rights reserved.