Galvanic Corrosion Behavior and Electric Insulation between B10 and a High Strength Steel in Seawater Environment for Warship

B10 copper alloy and a high-strength steel are two typical ship structural materials for ship seawater systems. The galvanic corrosion tendency of the two materials was investigated by electrochemical tests,the galvanic characteristics in static and dynamic seawater were studied by simulated corrosion tests,and the electrical insulation simulation of the two materials was evaluated by simulating the electrical insulation simulation calculation using connecting resistors with different resistance values. The results show that B10 alloy and the high-strength steel had strong galvanic corrosion tendency in seawater,after the two materials were connected, the high-strength steel acted as an anode and the corrosion was accelerated. The corrosion acceleration of galvanic couples in dynamic seawater environments was more pronounced. The simulation results show that the galvanic corrosion could be effectively controlled when the insulation resistance between the B10 alloy and the high-strength steel was higher than 4 kΩ.