The performance of Magnesium alloy sacrificial anode
Compared with other sacrificial anodes, magnesium sacrificial anode has lower density, larger capacitance, negative potential, lower polarizability, and higher driving voltage to steel, especially suitable for the protection of metal components in soil with high resistivity and fresh water.
Magnesium sacrificial anodes are divided into high potential and low potential magnesium anodes according to the open circuit potential. According to the production process, they can be divided into cast anodes and extruded anodes. In order to adapt to various environments and for different protection objects, magnesium anodes can be made into various shapes, such as cast anodes with D -shaped and trapezoidal cross-sections commonly used in soil and water, and extruded anodes are often used in heat exchangers. Cylindrical anodes, belt-shaped high-potential magnesium anodes are often used in high-resistivity soils or casings, and hemispherical anodes are commonly used underwater. Composite anodes are ideal anodes in low-resistivity environments.