Pitting

Pitting is a corrosion phenomenon that can occur in metallic materials. This form of corrosion is characterized by the formation of small, deep holes or depressions on the metal surface. As a rule, pitting corrosion is particularly common in environments with high humidity or in aggressive chemical environments.

The pitting process often begins with localized defects on the metal surface, such as scratches, cracks or other irregularities. In the presence of corrosive substances, such as salt solutions or acidic environments, the affected area is preferentially attacked. Local dissolution of the metal can then take place at these points, resulting in a depression or hole.

The resulting pitting holes can penetrate deep into the material, which can lead to significant structural damage, especially if not detected and treated in time. Pitting corrosion often affects metals such as aluminum, magnesium or stainless steel.

Various protective measures are taken to prevent pitting. These include the use of corrosion-resistant alloys, the application of coatings or paints that protect the metal from environmental influences and the control of environmental conditions to minimize aggressive substances.

In industry and construction, knowledge of pitting and the implementation of protective measures is essential to extend the life of metallic structures and ensure their integrity. Research and development of materials and coatings aims to develop effective strategies against pitting and other forms of corrosion.