Konverteerimiskatete

Konverteerimiskatete is a term used in Estonian to describe conversion coatings. These are thin, protective layers applied to metal surfaces, typically steel or aluminum, to enhance their corrosion resistance and improve paint adhesion. The process of applying a konverteerimiskate involves a chemical reaction where the metal surface is transformed into a new compound, creating a stable, passive layer.

Common types of konverteerimiskatete include phosphate coatings and chromate coatings. Phosphate coatings, often based on zinc or iron phosphates, are widely used for their excellent adhesion properties, making them a good base for painting. Chromate coatings, historically made with hexavalent chromium, are known for their superior corrosion resistance and are often used on aluminum and zinc-plated steel. However, due to environmental and health concerns, hexavalent chromium is increasingly being replaced by trivalent chromium or chromium-free alternatives.

The application of konverteerimiskatete can be done through various methods, such as immersion, spraying, or brushing. The specific process and chemicals used depend on the type of metal, the desired protective properties, and the intended application of the finished product. These coatings are crucial in many industries, including automotive, aerospace, and manufacturing, where durability and a high-quality finish are essential.