Aluminium
Aluminum alloy anodes are used primarily in seawater applications and are produced in a variety of alloys of which indium alloys are the most common. The indium alloy has a slightly higher corrosion. Due to the requirement for chloride ions to prevent passivation, aluminium anodes are used primarily in seawater applications. They provide relatively high current capacity, light weight and lower consumption rate. They are commonly used for jetties, piers and terminals.
Chemical Composition
| Element | Lermetal III |
|---|---|
| Content % | |
| Zinc Zn | 3.0 – 6.5% |
| Indium In | 0.01 – 0.025% |
| Iron Fe | 0.135 max % |
| Silicon Si | 0.20 max % |
| Copper Cu | 0.0055 max % |
| Other each | 0.025 max% |
| Aluminium AL | Remainder |
Electrochemical Properties
| Lermetal III | |
|---|---|
| Open voltage (-V) | 1.10 V |
| Closed voltage (-V) | 1.05 V |
| Capacity (A.h/kg) | 2500 A.h/kg min |
| Efficiency (%) | 90 % min |
| Consumption rate (kg/A-y) | 3.40 kg/A-y |
All weights in kilograms. All dimensions in millimetres.
Lermetal anodes height and width are standard design widely used in the industry market.
Our Cathodic Protection Engineer and foundry can customise owner’s and buyer’s requirements upon request.