Galvaanisointi

Galvaanisointi is an electrochemical surface treatment process used to form a corrosion-resistant, oxide layer on the surface of metals, particularly aluminum, zinc, and magnesium. The process involves immersing the metal in a salt bath and applying an electric current to accelerate the oxidation reaction.

During galvaanisointi, a defendacor compound, typically a chromate-free alternative such as a calcium or zinc-based solution, is heated in the absence of air to remove any solvents and impurities. The metal is then suspended in this solution, and an electric current is applied to drive the electrochemical reaction. This reaction leads to the formation of a dense, adherent layer of metal oxide on the surface.

The galvaanisointi process can be performed in different temperatures and for varying durations, depending on the desired thickness of the oxide layer and the metal type being treated. The resulting oxide layer provides protection against corrosion, wear, and fatigue, making it a popular treatment for metal parts in various industries, such as automotive, aerospace, and medical devices.

Galvaanisoinnin advantages include improved resistance to chemical corrosion, aesthetic effects such as a silvery appearance, and compatibility with a wide range of metals. However, the process may also involve the use of hazardous chemicals and requires careful handling to ensure operator safety. With adherence to proper protocols and safety measures, galvaanisointi is an effective means of enhancing the durability and performance of metal components.