Galvanic Corrosion Behavior of Copper/Zinc in Simulated Soil Solution with Different pH Values

Using open circuit potential, potentiodynamic polarization, galvanic couple (GC) current tests in soil simulation solution and scanning oscillation electrode technology (SVET), the galvanic corrosion degree and spatial distribution characteristics of Cu/Zn galvanic couple in different pH soil simulation liquids were studied. The results showed that as the pH of the medium decreased, the corrosion rate of the Cu/Zn galvanic couple increased. And under the action of the electric field formed by the Cu/Zn galvanic couple, the corrosion of zinc in the copper-zinc galvanic couple mainly occurred near the interface of the copper/zinc galvanic couple.