Zinc Anodes (Sacrifical Anode)

Corrosion is the loss of its metallic properties by entering into a chemical or electrochemical reaction with the environment it is in. In practice; used for cathodic protection of metal structuresin salt water such as offshore platforms, ship hulls, in-tank, underwater pipesand piers.

Pipe internal corrosive waters and waste transportation in the pipe for the transportation of waste and corrosive waters

– Heat Exchanger and Condenser Anodes
– Balancing tanks of ships and oil carriers
– Filled type to discharge leakage current
– Protection of Scaffolding Steel feet
– In the protection of the outer surfaces of the ships
– In special structures

A potential difference of approximately 250mV occurs between the iron metal protected by pure zinc anodes. This difference is sufficient for cathodic protection.

However, if there is even a little iron in the zinc anodes, this potential difference will decrease in a short time. Like iron, the small amount of lead and copper in the zinc anode has a harmful effect.

On the other hand, the presence of aluminum and cadmium metals in the zinc anode helps the anode to produce current properly.

Chemical composition of zinc anodes
Al 0,10-0,50
Cd 0,025-0,15
Fe Max 0,005
Pb Max 0,006
Cu Max 0,005
Density (g/cm3) 7,1
Mass Loss (kg/A.yıl) 11,5
Mass Yield % max 90
Akım Kapasitesi (A.h/kg) 820
Circuit Potential Against Steel mV 250
Electrode Potential (Cu/CuSO4 Reference Electrode.) mV 1100