Anti-Corrosion Phosphate coatings for Metal surfaces

Objective. The study aims to conduct a comprehensive analysis of the resistance of phosphate coatings on metal surfaces when exposed to a salt-fog environment. Method. The research employs experimental methods to substantiate the selection of an improved, more effective formulation for anti-corrosion phosphate coatings. Result. A promising new solution for anti-corrosion coatings has been developed, incorporating a Lewis acid alongside uniformly dispersed nanoparticulate powders based on oxides and other inorganic compounds. It has been established that the use of these experimental formulations inhibits corrosion. Metal rods treated with these formulations begin to corrode after 9–10 days, whereas control (untreated) samples show signs of corrosion within just 48 hours. Conclusion. The modified phosphate coating provides metal structures with enhanced resistance to salt-fog exposure, significantly outperforming standard materials in this regard. However, its protective properties are limited; the coating loses its effectiveness during prolonged, continuous exposure within a salt-fog chamber. Despite its advantages, the service life of the modified film is finite. Furthermore, cold-applied coatings are less effective than their hot-applied counterparts.