ENVIRONMENTAL SAFETY AND EFFECTIVENESS AGAINST STEEL CORROSION OF INORGANIC INHIBITORS BASED ON PHOSPHORUS COMPOUNDS

Abstract

The article examines the effectiveness and environmental safety of inorganic inhibitors based on phosphorus compounds to slow down steel corrosion. Sodium orthophosphate (Na₃PO₄) and its derivatives insulate the surface of steel from an aggressive environment, forming protective films that prevent corrosion. During the study, the corrosion rate was determined using the gravimetric method and the effect of inhibitor solutions in different concentrations was compared. In addition, the impact of the phosphate inhibitors used on the environment was analyzed, and it was proved that toxic waste is not generated, that is, they are environmentally safe. The results showed that phosphorus-based inorganic inhibitors can be used as an effective and ecological alternative to protect metal structures. This research contributes to the development of less environmentally harmful technologies.