Passivation of Stainless Steel
Passivation is a widely-used metal finishing process to prevent corrosion. In stainless steel, the passivation process uses nitric acid or citric acid to remove free iron from the surface.
This is achieved by the formation and continuation of a viable Passive Layer.
The chemical treatment leads to a protective oxide layer that is less likely to chemically react with air and cause corrosion.
Tank before Passivation
Tank before Passivation