Protection of a metal structure from corrosion under water by making it act as an electrical cathode.
阴极保护，电解保护
Example sentencesExamples
We were able to speed up work by using a hi-tech system called cathodic protection, which involves passing an electric current through concrete bridge supports to reverse corrosion.
This was the first successful application of cathodic protection, in which a more readily oxidized metal is attached to the metal to be protected.
The commercially pure metal has a number of important nonstructural uses, for example, in pyrotechnics, as an alloying agent in nonferrous metallurgy, and in the cathodic protection of other metals against corrosion.
A process called cathodic protection will reverse the effects of salt corrosion by passing a small electric current through steel reinforcements inside the concrete.
Stainless steel tubing increases copper alloy tube sheet attack to the point where impressed current cathodic protection is normally required to control tube sheet corrosion.