How can galvanic corrosion be prevented?

Question

asked Sep 20, 2024 152k views

1 Answer

Uckelman · Answer 1 · 2024-09-25T18:33:28+0000

Galvanic corrosion can be prevented through protective coatings, cathodic protection, and preventing contact with oxygen and water.

Galvanic corrosion can be prevented through various methods:

Protective coatings: Applying a second metal coating that is more difficult to oxidize than the metal being protected, such as galvanizing steel with a layer of zinc.
Cathodic protection: Attaching sacrificial electrodes made of a more easily oxidized metal, such as zinc or magnesium, to the object being protected.
Preventing contact with oxygen and water: Using paint, grease, plastic, or other coverings to prevent the metal from coming into contact with oxygen and water.