Copper-Nickel Corrosion Passivation

Formation of a thin, adherent protective layer on Cu-Ni alloys in marine environments that prevents direct contact with aggressive media. This minimizes erosion corrosion in piping systems.

Copper-nickel forms a natural, protective oxide layer on the surface that makes the material insensitive to corrosion, especially in saltwater. When welding, you have to be careful not to burn away this layer or overheat the alloy, otherwise you lose the corrosion protection. After welding, it's important to clean the seam and let the protective layer re-form. During cooling, you should take it slow so that the structure doesn't become brittle and the passivation can build up properly.

MetallurgieSchweißtechnik