Chromate conversion coating

Chromate conversion coating is a chemical process used to protect metal surfaces, especially aluminum and zinc, from corrosion. It involves applying a thin, protective layer of chemical compounds containing hexavalent chromium, which forms a durable, corrosion-resistant film on the metal. This coating improves the metal's resistance to rust and enhances paint adhesion, making it ideal for industrial and military applications. The process also provides some electrical conductivity, useful in electronic components. Although effective, environmental concerns about chromium's toxicity have led to efforts to develop alternative, eco-friendly coatings.