Pitting corrosion

Pitting corrosion is a specific type of so-called pitting corrosion that can occur in metallic materials. This corrosion mechanism is often observed in aluminum alloys, especially in areas where metallic surfaces are in contact with non-metallic materials.

Pitting corrosion occurs when localized corrosion cells form where aluminium comes into contact with another material. This process is facilitated by the presence of electrolytes such as moisture or salt solutions. The electrochemical reaction causes the aluminum to corrode at these points.

A characteristic feature of deposit corrosion is that it forms under a thin layer of deposit covering the affected metal. This coating can take various forms, from organic deposits to non-metallic oxides. Electrochemical corrosion continues under this coating without being visible from the outside.

Deposit corrosion can cause significant damage to metal structures, especially if it goes unnoticed and continues. Careful material selection, coating techniques and regular inspections are required to prevent this form of corrosion. By identifying and eliminating potential pavement areas and using corrosion-resistant materials, the risk of pavement corrosion can be minimized and the service life of metal components extended.