Silicon cast iron anodes are a type of anodes used in impressed current cathodic protection (ICCP) systems. This means they are connected to an external power source that controls the current and polarity. Silicon cast iron anodes have a high silicon content, providing them with high corrosion resistance and a long lifespan. They can be used in various environments such as soil, freshwater, brackish water, or seawater.

Impressed voltage

In addition to cathodic protection using galvanic anodes, it is also possible to use non-galvanic anodes. In the case of impressed voltage, the electron flow is supplied by an external direct current (DC) source. Because the current output is much larger than that of galvanic anodes, this form of cathodic protection can protect larger surface areas.

Application of silicon anodes

These silicon cast iron rod anodes are used to protect underground or underwater metal structures such as drilling platforms, steel pipelines, oil production stations, underground cables, or storage tanks. They are usually installed in deep groundbeds or seabeds.

DEC and SEC anodes

At Merrem & La Porte, you can find your silicon cast iron anodes. Our range includes both Ductile Electrode Casting (DEC) and Solid Electrode Casting (SEC) anodes. DEC and SEC cast iron anodes are both types of silicon cast iron anodes used for cathodic protection. The difference between a DEC and SEC SiFe cast iron anode lies in the production method and alloy composition. A DEC anode has a high silicon content and additions of chromium, molybdenum, and copper. This alloy is cast into a tubular mold with a steel core, which serves as the current collector. A DEC cast iron anode has high density, strength, and ductility, making it resistant to breakage and deformation.

On the other hand, an SEC anode also has a high silicon content but no addition of other metals. This alloy is cast into a rod-shaped mold without a steel core, making it suitable for environments where a tubular anode is not suitable.

Silicon (SiFe) Anodes at Merrem & La Porte

More information about silicon anodes

If you are looking for a reliable supplier for your silicon anodes, Merrem & La Porte is the right choice. We guarantee fast delivery and excellent service. Please contact us, and one of our CP experts will respond to your inquiry promptly.