Application of corrosion inhibitors for phosphonic acid based capital cooling system

Purpose. Receiving of regularities for changing of depth indicator of corrosion degree and protection level from concentrations of reagent compositions administered based on phosphonic acids. Methods.The corrosion rate was determined by gravimetric method, in accordance with GOST 9.502-82 with natural aeration, temperature was 20º C, speed of the fluid of 1.2 m / s on specimens of steel S1010 in form of plates dimensions 10х20х1 mm. Results. Using a mixture of phosphonic acids more efficiently than its individual components.The mixture РBTС with HEDP or NTF there is a significant increase of the protection ability of the reagent. This can be explained by the phenomenon of synergism. Scientific novelty. Based on conducted researches was developed some compositions of environmentally safe of compositions of corrosion inhibitor. Practical significance. Were selected optimal compositions and concentrations of corrosion inhibitors based on phosphonicacids.