Passivation of stainless steel: After the metal is treated with an oxidizing medium, the corrosion rate is significantly lower than that before the original treatment, which is called passivation of the metal.
The stainless steel passivation treatment is to make the stainless steel surface react with the passivating agent to form a stable passivation film, so as to protect the stainless steel substrate from oxidative corrosion and rust.

