Cathodic protection

Cathodic protection,

Definition of Cathodic protection:

  1. Method of protection for iron and steel against electrochemical corrosion. Two types of cathodic protection are: (1) Active, in which a low voltage (usually 40 to 50 volt) direct current is imposed between the exposed parts of a structure and the ground. (2) Passive, in which an anode (positive electrode) made of a more reactive metal (such as a magnesium alloy) is sacrificed to protect a structure acting as a cathode (negative electrode). Cathodic protection is the most widely applied anti-corrosion control technique in electrolytically conducting environments such as seawater and soils containing water. Invented in 1824 by the UK scientist Sir Humphrey Davy (1778-1829) to protect the copper-cladded wooden ships from seawater corrosion. Also called sacrificial protection. See also anodic protection.

  2. Protection of a metal structure from corrosion under water by making it act as an electrical cathode.

How to use Cathodic protection in a sentence?

  1. A process called cathodic protection will reverse the effects of salt corrosion by passing a small electric current through steel reinforcements inside the concrete.
  2. The metal needed to be protected, so we decided it was time to implement some cathodic protection on all of our iron and steel stuff.
  3. You should try and make sure that you have cathodic protection and use it in a way to help your business.
  4. It is important to make sure that you have a good cathodic protection on any valuable machinery you have in your factory.

Meaning of Cathodic protection & Cathodic protection Definition