Cathodic protection

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:

  • use of finite elements methods to design and manage cathodic protection systems
  • effect of a non-stationary direct current interference on cathodically protected steel
  • definition of corrosion mechanism and criteria for cathodic protection in the presence of alternating current
  • monitoring techniques for cathodic protection
  • cathodic protection and prevention of stainless steel in the presence of chlorides

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