Impressed current cathodic protection (ICCP) is an electrical process for protection against galvanic corrosion.
ICCP systems can offer permanent and automatic protection for off-setting galvanic effects that cause corrosion and attack the wetted surfaces of mobile or fixed offshore structures and sea-going vessels. These systems effectively treat corrosion on a metal surface by applying electrical current forcing an electrochemical reaction to occur that alters any corrosive reaction.
Types of Cathodic Protection: A Proven Solution
Cathodic protection (CP) is a cornerstone of corrosion engineering. It works by turning the protected metal into the cathode of an electrochemical cell, halting its corrosion process. There are two primary types:
- Galvanic (Sacrificial) Anodes: These are made from highly reactive metals like zinc, magnesium, or aluminum. They corrode sacrificially to protect connected structures such as ship hulls or dock pilings.
- Impressed Current Cathodic Protection (ICCP): This system uses an external power source to apply a continuous electrical current, ideal for larger or more complex marine.
