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Anodes
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Test product protective current device
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External current anodes
To prevent corrosion on protected objects, the use of high-quality impressed current anodes is the main component for achieving a long service life for your protected object.
External current anodes always have an external DC power source. The anodes are installed in an electrolyte (soil or water) and drive the previously calculated current required. External current anodes are used wherever higher currents are required for corrosion protection. This is typically used for long-distance pipelines, in the seawater sector or in environments with a high oxygen content for larger objects. The choice of materials from which the anodes are manufactured varies according to local requirements.
The most important impressed current anodes for protection against corrosion are
– Magnetite anodes
– FE/SI anodes
– MMO anodes
– Titanium anodes
– MESH anodes
– Cable anodes
Galvanic anodes
Galvanic anodes are typically used in KKS corrosion protection when only low currents are required to develop a protective effect.
The way these so-called sacrificial anodes work is due to the potential difference between the various materials (magnesium, aluminum, zinc) and the steel of the object to be protected.
In principle, galvanic anodes are consumed by the protective current and self-corrosion. This means that the installed mass must be designed according to the protection requirements of the system. Hence the term sacrificial anode.
- Magnesium anodes (high potential)
– Aluminum anodes
– Zinc anodes
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