Graphite anode is a corrosion-resistant material that is used as an auxiliary anode for low-solubility anode materials. Graphite anodes are used in soils, flowing seawater and sea mud. In fact they are not subject to chlorine damage.
Graphite anodes are usually impregnated with a sealant to prevent mechanical damage due to gassing in the pores, graphite is also brittle, and in seawater, his consumption is 0.45 kg / Aa (11b / Aa); in the filler 0.9 kg / Aa (21b / Aa); 1.36 kg / Aa (31b / Aa) in sea mud. Graphite anodes are often produced as cylindrical anodes.