Anticoroziv

Anticoroziv refers to substances, coatings and systems designed to prevent or slow the corrosion of metals in aggressive environments. Corrosion is an electrochemical or chemical degradation driven by moisture, oxygen, salts, acids or alkalis, and anticorozive measures aim to form protective barriers or reduce the rate of the surface reactions that cause metal loss.

Anticoroziv methods include protective coatings, metallic coatings, inorganic treatments and corrosion inhibitors. Protective coatings such as specialized paints, epoxy and polyurethane systems, and vinyl or powder coatings act as a physical barrier between metal and the environment. Metallic coatings, including galvanizing with zinc or aluminum-based coatings, provide sacrificial or barrier protection. Conversion and inorganic coatings create a chemically modified surface that resists corrosion, while corrosion inhibitors are chemicals added to fluids to suppress corrosive reactions at the metal surface.

The effectiveness of anticoroziv treatments depends on factors such as substrate preparation, coating thickness and uniformity, environmental exposure, and coating adhesion and durability. Common applications span automotive, construction, maritime, petrochemical, and electrical equipment industries. Durability is typically assessed through standardized tests, including salt spray (ISO or ASTM equivalents), cyclic corrosion tests, and electrochemical techniques like impedance spectroscopy and polarization measurements.

Environmental and regulatory considerations influence anticoroziv choices. Some systems rely on substances with environmental or health concerns (for example, certain chromates and heavy metals), prompting development of chromate-free inhibitors, advanced polymeric coatings, and other sustainable alternatives. Regular inspection and maintenance, including surface cleaning, repair of damaged areas, and timely reapplication, extend the protective life of anticorozive solutions.