Aluminium anodes
zinc anodes
Magnesium anodes
Sacrificial anodes used in cathodic protection for a metallic components.Sacrificial anodes attached to a metal object, such as a boat or underground tank, to inhibit the object's corrosion.

Platinized titanium / Niobium anodes
Lead alloy anodes
MMO titanium anodes
This Impressed current anodes are relatively inert to corrosion and require an external power source to generate the electric current that will bring cathodic protection to the structure.