- Magnesium anodes are lucrative, when used on land where high driving potentials mark it appropriate for high resistivity soils and in saline water & coastal body locations, mixture of salt and fresh water also gives high resistivity.
- Magnesium anodes shows an open circuit potential, at Temperature of – 1700 mV or more negative with reference to a Cu/CuSO4 Electrode in soil.
- Magnesium anodes for soil application shall conform to the following Composition:
Copper -0.02% Maximum Aluminium -0.01% Maximum Iron -0.03% Maximum Silica -0.05% Maximum Manganese -0.5 to 1.3% Nickel -0.001% Maximum Magnesium Balance
Anodes for suppressed structures
The anodes for suppressed pipelines, tanks & etc are usually supplied bundled in a cotton bag containing a quick wetting, moisture-absorbent backfill, which decreases the electrolyte resistivity in line to the anode, enhanced results.