Diffusion process

Diffusion processes for the production of corrosion protection coatings are based on the principle of allowing metals or non-metals to diffuse into the surface of a metal in order to create a protective layer. In this process, the substrate, i.e. the metal to be protected, is subjected to a controlled chemical reaction in which the diffusing elements are introduced into the metal surface through heat and chemical reactivity.

These processes are often used to improve the corrosion resistance and wear resistance of the metal. Typical applications include chromium plating, aluminizing and boron plating, in which metals such as chromium, aluminium or non-metals such as boron diffuse into the surface. The result is a modified surface layer with improved physical and chemical properties, such as increased hardness, oxidation resistance and protection against chemical attack.

Diffusion processes are widely used in the automotive, aerospace and mechanical engineering industries, as they create a durable and robust protective layer without the need for additional coatings. The layer is created by the chemical reaction directly in the material compound and therefore has excellent adhesion and stability.