passiválás
Passiválás is a surface treatment process used to enhance the corrosion resistance of metals, particularly stainless steel and aluminum. The process involves creating a protective oxide layer on the metal surface. This layer is typically formed by exposing the metal to a chemical solution, often an acid or a mixture of acids, which reacts with the surface. The resulting oxide film is thin, passive, and adherent to the underlying metal. It acts as a barrier, preventing or significantly slowing down the electrochemical reactions that lead to corrosion.
The effectiveness of passivation depends on several factors, including the type of metal, the passivation solution