Why Do Earthing Plates and Electrodes Corrode?

Moisture , oxygen, ions present in air, salt and water ,chemically react with metals solubilizing them as oxides, hydroxides, sulphates, chlorides etc leading to dissolution of the solid metal surfaces.

How about trying a vacuum sealed earthing system?

Encapsulation, Nano technology etc should have better solutions to your quest.

Why don't you invent Palladium.

No, naquadria is the best for this application.

If it's a galvanic reaction that is causing the damage then you may want to consider adding an additional ground to the system using a buried sacrificial zinc plug.

Zinc's location on the galvanic scale make it the ideal material for protecting expensive propellers, rudders and drive shafts on boats, especially those in salt water.

Inexpensive sacrificial zinc pieces designed for just this application, can be found at most marine supply distributors.

L.J.

Have you considered stainless steel for the electrode? In some areas where the soil is very dry, multiple bonded electrodes must be used to achieve low resistance.Earth ground carries very little current.The neutral conductor carries most unbalanced current of the system.Chemicals may be used to enhance conductivity of the electrode.If using SS electrode, do not apply chemicals for a few days after driving in rod.This allows the Chromium Oxide surface of the electrode to heal and provide corrosion protection.A freshly scratched SS electrode will corrode if exposed to corrosive chemicals before "healing" has occured on the surface.