Tarnishing

Tarnishing is a surface change that often occurs on coated surfaces or coverings. It typically occurs on metals such as iron, copper or brass, but can also occur on other materials. This change to the surface results from various factors such as oxidation, chemical reaction with the ambient air or moisture and contact with certain substances.

On metallic surfaces, tarnishing can be caused by the formation of a thin layer of oxide or corrosion products that make the surface appear dull or matt. This tarnishing can also change the color or luster of the material, resulting in an unsightly appearance.

In the case of coated surfaces or coverings, tarnishing can have various causes. For example, it can be caused by ageing of the coating, chemical reactions with aggressive substances or environmental influences such as UV radiation or moisture. In some cases, tarnishing can also be caused by improper cleaning methods or contact with certain chemicals.

The alteration of the surface due to tarnishing can affect the aesthetics and impair the performance of the coated surface or covering. It may therefore be necessary to take appropriate measures to prevent or minimize tarnishing, such as regular cleaning and maintenance, the use of protective coatings or the application of surface treatments designed to prevent tarnishing.