INCORR Lead / Silver / Antimony Anodes are suitable for wharves and jetties, offshore mobile drilling rigs and other structure in seawater.
Lead / Silver/ Antimony anodes can perform effectively as a semi-permanent anode due to the formation of a PbO2 layer. This will also be formed when lead is used alone. However, this PbO layer will be very porous if lead is not alloyed with silver / antimony. The PbO2 layer will not form either if the anode current density is too low or lack of oxygen.
However, in some cases such as installing the Lead / Silver / Antimony anode in fresh water, the oxygen generated not only forms the PbO2 but may also spall of the PbO2 layer. For these reasons, we normally install Lead / Silver / Antimony Anode in seawater installations but not in fresh water, soil or seabed.
The consumption rate of Lead / Silver / Antimony Anode is in the range of 45 gm/Amp-yr to 65 gm/Amp-yr.
MATERIAL COMPOSITION
| Element | Composition (Weight %) |
| Lead | 93 |
| Antimony | 6 |
| Silver | 1 |
ANODE DIMENSIONS
| Anode Type | Nett anode weight (kg) | Anode length L (mm) | Anode diameter Ø (mm) |
| IL-45 | 45 | 975 | 75 |
| IL-23 | 23 | 975 | 54 |
Note: All anodes fitted with standard 6m x 35mm² XLPE/PVC cathodic protection copper cable. Other cables such as submarine cables are available on request.
 |
Click on thumbnail for photograph. |