Zinc anodes for harbor and offshore engineering facilities utilize the characteristic that zinc has a more negative potential in seawater or seabed mud, forming a macroscopic galvanic cell with the steel structure to be protected.
Zinc anodes for harbor and offshore engineering facilities utilize the characteristic that zinc has a more negative potential in seawater or seabed mud, forming a macroscopic galvanic cell with the steel structure to be protected. As the anode, zinc preferentially dissolves, and the released electrons polarize the steel surface to the cathodic protection potential, thereby inhibiting electrochemical corrosion.
These anodes are widely used in steel structures that are long-term exposed to seawater or tidal zones, such as port terminal steel pipe piles, sheet piles, offshore wind turbine foundations, cross-sea bridge piers, jacket platforms, submarine pipelines, and buoy mooring systems. Zinc anodes are well-suited for harsh environments with high salinity, high flow velocity, and sediment erosion. They offer stable current efficiency, require no external power supply, and are easy to install and replace, significantly extending facility service life and reducing lifecycle maintenance costs.
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