Aqua regia

In surface technology, aqua regia is often used to treat and refine a variety of materials. This caustic solution, consisting of hydrochloric acid and nitric acid, is characterized by its ability to dissolve a variety of metals and alloys. By using aqua regia, surfaces can be cleaned, degreased and activated, which improves the adhesion of coatings.

In addition, it is often used to remove oxide layers or prepare metal surfaces for subsequent treatments such as electroplating or painting. However, the use of aqua regia requires extreme caution due to its strong corrosive and toxic properties, and accurate dosing and handling is essential to avoid unwanted damage and ensure the safety of the working environment.