Metal surface passivation treatment is a step in a chemical cleaning process aimed at improving the corrosion resistance and extending the service life of metal materials
A dense oxide film (passivation film) is formed on the surface of the metal, which can effectively protect the surface of the metal material from corrosion and oxidation. The passivation film has high density and stability, as well as self-healing function. Therefore, compared with the traditional method of applying anti rust oil, the passivation film formed by passivation is more stable and corrosion-resistant.
Metal passivation treatment can be applied to various metal materials, such as steel, aluminum, copper, etc., to improve their corrosion resistance and anti-corrosion ability. In the chemical industry, various metal materials After chemical cleaning, the metal surface without the scale layer will expose the metal body, which is easily corroded and rusted again. Therefore, passivation treatment is needed. In summary, metal surface passivation treatment can improve the corrosion resistance of metal materials, extend their service life, and is widely used in chemical, mechanical, electronic and other fields
