|
Chemical composition
The POLCOR zinc anodes follow the US MIL-A-18001J SPECIFICATION 1983.In the following table,the chemical composition as well as the electrochemical properties of zinc anodes are presented :
Elements?
|
Pb |
0.006 (max)% |
|
Fe |
0.005 (max)% |
|
Cd |
0.025-0.070(range)% |
|
Cu |
0.005(max)% |
|
Al |
0.1-0.5(range)% |
|
Zn |
Balance |
|
Capacity |
780 Ah/Kg |
|
Efficiency |
95% |
|
Potential |
-1050mV Ag/AgCl electrolyte artificial sea water DIN 50905 |
|
|
|
Cadmium is used as depassivating agent. However it should not exceed a maximum percentage for environmental reasons. Aluminium is added to improve electrochemical characteristics. Lead, copper and Iron are considered to be impurities and should not exceed the presented maximum percentages.
Iron is the impurity with the most profound effect on the anode performance.
|
Zinc Alloys 
