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Home >> Cathodic Protection >> Al anode >> 正文

Al anode

标准网站 2010-7-8 15:25:57

  
         CORROCO aluminium anodes are cast alloys of pure aluminium, zinc and indium. The addition of Indium acts beneficially as a depassivating agent of aluminium. So the anodes dissolves in a regular way protecting the steel structures in the marine environment.


         The chemical and electrochemical characteristics of CORROCO aluminium anodes are listed in the following table:
Elements
 
Zn
3.5-5.0 (range)%
In
0.02-0.05 (range)%
Fe
0.16 (max) %
Cu
0.01 (max) %
Si
0.1 (max) %
Others
0.04 (max) %
Al
Balance
Capacity
2680Ah/Kg
Efficiency
90%
Potential
1100Ag/AgCl electrolyte artificial sea water DIN 50905

         It is important to note that there is a variety of Aluminium anodes in the market with various compositions. Although Al anodes provide significant advantages over the traditional zinc anodes, in terms of weight and electrochemical characteristics, the risk of passivation is generally greater. The CORROCO anodes are using Al-Zn-In alloys since these alloys have been proven to be the most reliable material.
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