Effect of Electromagnetic/Ultrasonic Compound Energy Field on Electrochemical Properties of Continuous Cast-Rolled Lead Alloy Anode Plate

A lead alloy anode plate was cast-rolled with combination of electromagnetic field could ultrasonic field, and its electrochemical properties were tested and compared with the continuous cast-rolled and industrial anode plates. The results show that the combination field could decrease the grain size greatly from 120 μm to 20 μm compared to the continuous cast-rolling. The oxygen evolution potential of compound energy-field continuous cast-rolled anode plate was 18 mV and 49 mV lower than that of continuous cast-rolled anode plate and industrial anode plate, respectively, and the corrosion rate decrease by 6.1% and 34.8%. The surface of compound energy field continuous cast-rolled anode plate was more easily to generate oxidation film PbO2. The oxidation films on the surface of compound energy field continuous cast-rolled and continuous cast-rolled anode plates all were aggregate with small particles, and the former was finer and more uniform, and was more compact bonding with the substrate. The oxidation film on industrial anode plate surface was fair loose accumulation with large particles.