Industry Knowledge

One Type of Cathodic Protection
Sep 12, 2016

Galvanic Anode Cathodic Protection


  • In this type of CP, protection is achieved by connecting the protected structure to a sacrificial anode, which is placed close to the protected structure.

  • Sacrificial anodes are made from active metals such as zinc, aluminum, or magnesium, which are considered the most active metals according to the galvanic series.

  • CP current is created by the potential difference between sacrificial anodes and the protected structure.

  • The type of anode used depends on electrolyte resistivity and the chemical compositions of the electrolyte to which the substrate is exposed.



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