Pylypenko T. Inhibition of acid corrosion of metals by N-acylmethylpyridine salts

The dissertation is devoted to the development of new synthetic inhibitors of acid corrosion of metals on the basis of N-acylmethylpyridine salts (AMPS) with high efficiency of protective action in the wide range of temperatures. For the first time in this work protective action of pyridine salts with N-carbonilcontents groupings (about 50 substances in all) is investigated. Their significant influence on corrosion stability of different marks of steels and zinc in acid solutions, and also the change of steel plasticity is established at its etching in corrosion environments and at the presence of hydrogen sulphide in them. It is revealed, that the majority of the investigated substances show good biocides properties and suppress microbic corrosion of steel at the presence of sulphate-reducing bacteria. The researches of developed inhibitors on the basis of AMPS in industrial conditions are done and the ecological safety, the expediency and the perspectivity of their practical use for corrosion protection and hydrogen fragility of steel products at etching in sulfate- and chlorideacid solutions in the wide range of temperatures are shown.