Aluminum Anode for Harbor/Marine Engineering Facilities (Al–Zn–In series sacrificial anode): In electrolytes such as seawater and sea mud, aluminum exhibits a more negative potential, forming a galvanic couple with the protected steel structures
Aluminum Anode for Harbor/Marine Engineering Facilities (Al–Zn–In series sacrificial anode): In electrolytes such as seawater and sea mud, aluminum exhibits a more negative potential, forming a galvanic couple with the protected steel structures (wharf steel piles, jacket structures, mooring systems, trestles, caissons/revetment steel components, etc.). The aluminum anode preferentially corrodes and dissolves, continuously delivering protective current to polarize the steel surface into a safe potential range, thereby suppressing uniform and localized corrosion. They are mostly installed as large-size trapezoidal blocks, bracelet anodes, or combined units via welded steel legs or clamps, designed for long service life. The splash zone generally still relies primarily on coatings, while the anodes focus on protecting the fully submerged zone and the seabed interface.
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