ZINC ANODE
GENERAL
The Zinc Alloy Anodes are
casted from High Grade Zinc Ingot of Minimum Purity 99% with small addition of
special alloy elements. Zinc anodes provide a very simple, cost effective,
maintenance free method of corrosion control for buried or immersed Metallic
structures. zinc was effective and economical method
of protecting a wide variety of underground and under water metallic systems
for over 20 years.
TYPICAL APPLICATIONS
-
Zinc anodes are used in water
and mud with resistivities up to 1000 Ohm cm.
-
Zinc should not be used where
temperature above +50-C.
-
Zinc anodes are commonly used
in high quality anti-corrosion coating submarine pipeline, offshore-- structure, quay wall and for marine
application in ballast tank and external ships hulls and rudder protection.
CHEMICAL COMPOSITION
|
Element |
Normal
(%) |
|
Lead |
≤0.006 |
|
Iron |
≤0.095 |
|
Cadmium |
0.025 - 0.15 |
|
Copper |
≤0.005 |
|
Aluminium |
0.1 - 0.5 |
|
Silicon |
≤0.125 |
|
Zinc |
Remainder |
Chemical composition based on
DNV Standard. Other compositions are also available upon request.
Electrochemical Capacity : 780 Amp.hr/Kg (ambient temperature
in seawater)
Closed Circuit Potential : -1.05V (seawater) w.r.t Ag/AgCl Reference Electrode
Consumption Rate in Seawater : 11.25kg/Amp.yr
Notes: Cast Zn anodes, Extruded Zn anodes, Zn Hull, Tank type and etc are available upon request.