Alumunium Anodes are cast from special Alumunium alloys developed by HAKA . Suitable formulated for specific application, they are characteristic by light weight, smooth corrosion pattern, high electrical capacity and stability. Fewer anodes may be used for a given installation compared with other materials and substantially lower cost per installed system is achived. Flexible Alalloy anodes is extrudedonto amild stell core wire from a special patented alumunium alloy. The flexibilty and light weight of this extruded anode. Together with the method of clamping, permits its use in applications where the use of cast block anodes may be difficult or uneconomic.
Materials
Different alloy formulation are available specially design for different applications. Alalloy anodes are cast in alloys of Alumunium and Indium plus addition and have been developed specially for use sea water. The materialsare very stable in driveing potential and effeciency even in electrolytes of varying conductivity and temperature. In normal sea water, having receptivity of about 25 ohm cm, approximately 2700 ampere hours of current are provided by each kilogramof alloy which will maintain a potential of alloy which will maintain a potential of 1100mV when measured againts a silver/silver chloride refference half cell.
Product Range
The standard range of Alalloy anodes is listed overleaf. However, HAKA specializes in designing and producing, anodes to meet any individual requirement and make their own mould to do so. Thereby they ensure both the optimum solution to each problem and total control over the quality of the finished anodes.
Applications
Alalloy anodes are suitable for a wide variety of applications including the hull and tanks of ship, fixed off-shore structure, semi submersible,pipelines and jetties.
Chemical Composition :
| Haka Alloy III | Al Alloy III | |
|---|---|---|
| Zinc | 2,0 – 6,0 % | 2,8 – 6,5 % |
| Indium | 0,01 – 0,03 % | 0,01 – 0,03 % |
| Iron | 0,12 % max | 0,13 % max |
| Silicon | 0,15 % max | 0,15 % max |
| Coopper | 0,006 % max | 0,006 % max |
| Other (Each) | 0,02 % max | 0,02 % max |
| Alumunium | Balance | Balance |
Electrochemical Properties :
Nominal Potential -1100mV Ag/Agcl Sea Water
Nominal Current Capavity 2700 Ah/Kg
ALUMUNIUM ANODES FOR HULL
ALUMINIUM ANODE FOR TANK
