Cathodic protection

"Cathodic protection is an electrochemical technique of corrosion prevention and protection, which can be applied to metallic materials in contact with aggressive environments with appreciable electric conductivity. It is performed by inducing a current flow from an anode, positioned in the environment, and the surface of the structure to be protected (cathode): by decreasing the potential of the metallic material, this current reduces the corrosion rate until it stops.

Extracted from: Protezione Catodica, L. Lazzari, P. Pedeferri, M. Ormellese


Among the exixting corrosion protection techniques, cathodic protection has a leading role. In this frame, the activities of the PoliLaPP research group are distributed in all phases concerning the cathodic protection of a structure, with particular attention to the electrochemical aspects of the technique and to technological advancements.
Current research activities include:

  • Study of the mechanism of alternating current corrosion on cathodically protected steel
  • Definition of criteria for cathodic protection of carbon steel in the presence of alternating current
  • Effect of a non-stationary direct current interference on cathodically protected steel
  • Cathodic protection and prevention of stainless steel in the presence of chlorides
  • Measurement and monitoring techniques for cathodic protection

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