Passivation is the process of removing iron and other surface contaminants from stainless steel materials. It also can help repair any damaged areas in the protective chromium oxide layer by facilitating its oxidation. Additions of strong oxidizers, such as sodium dichromate, can further accelerate oxide formation. Passivation ensures that the surface is free from corrosion, which can negatively affect the life and properties of stainless steel materials.
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