Metals phosphate coating represents an excellent anti-corrosion treatment for two valid reasons:
• the phosphate processed metal surface, losing its own metallic structure, exerts a protective action against rust or other oxidants action
• the phosphate crystals layer, from the chemical conversion of metal, forms a solidanchorage base for successive waxes, anti-rust oils or other protective substances application.
Zinc phosphate coating is recommended as anti-corrosion treatment, even if depending on the technical specifications of metal and project requirements, full bath immersions with other phosphate solutions can be better performing.