The rivet-metal galvanic interaction (PC-Mg) that displayed the lowest current density also experienced the lowest visible corrosion damage to the magnesium anode
If you replaced the magnesium anode
rod with a similar one, the problem has recurred.
A current through the earth can be easily produced by galvanic action from the energy of corrosion of a magnesium anode
A magnesium anode
rod protects your tank better but doesn't last as long as an aluminum/zinc rod.
Therefore, contact of magnesium with any other metal in the presence of an electrolyte can lead to attack of the magnesium, the severity depending on the ratio of the areas of the magnesium anode
and the dissimilar cathode (a low ratio means worse corrosion).
The magnesium anode
system was diligently monitored and depleted anodes were diligently replaced.
One option is to install a sacrificial magnesium anode
to the lift system.
This is done by installing a replacement magnesium anode
and connecting it to the gas line.
high potential magnesium anode
, restoration of site to equal or better condition.
The PowerMag 1000 system, which is simple to install and easy to use, enables full control over low maintenance sacrificial magnesium anode
systems with no "over voltage" issues.
Limited Tenders are invited for Magnesium Anode
For Cathodic Protection