What is the principle of cathodic protection?

2018-01-23

Cathodic protection is a kind of electrochemical technology which makes the metal surface electrons reach saturation, according to the electrochemistry principle of metal corrosion, rely on polarization current from the outside into the cathodic that makes the potential negative shift of the metal, thus reduce the corrosion speed and effective inhibition of metal corrosion. Cathodic protection has two kinds of protection, one is impressed current cathodic protection, another is sacrificial anode protection.

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YHTF/HFTF/YBNXQ-Platinum and niobium auxiliary anode