Thin-film passivation

Thin-film passivation is a process used in surface technology to improve the corrosion resistance of metals. In this process, a thin layer of passivating substances is applied to the metal surface to protect it from environmental influences such as moisture, oxygen and chemical reactions.

The passivation layer forms a barrier between the metal and the corrosive elements, reducing the reactivity of the metal and inhibiting the formation of corrosion products. This leads to increased durability and service life of the metal, especially in environments containing high humidity, salts or other corrosive substances.

The composition of the passivation layer can vary depending on the specific requirements of the application. Commonly used materials for thin-film passivation are chromates, phosphates, molybdates or silicates. These substances react with the metal surface to form a protective oxide layer that inhibits corrosion.

Thin-film passivation can be applied using various methods, including dip coating, spray coating or electrochemical processes. The choice of method depends on factors such as the type of metal to be passivated, the desired coating thickness and the production requirements. Overall, thin film passivation offers an effective way to improve the corrosion resistance of metals and extend their service life in demanding environments. By forming a protective layer on the metal surface, this process helps to reduce maintenance costs and increase the reliability of components and equipment