Влияние тиосемикарбазона пировиноградной кислоты на коррозию стали Ст. 3 в воде

The process of corrosion of steel St-3 (according to Russian GOST 14959-79 in water with thiosemicarbazone of pyruvic acid additives has been tested by gravimetric, electrochemical and physicochemical methods (UVand IR-spectroscopy, X-ray analysis). It is shown that addition of thiosemicarbazone of pyruvic acid in water significantly reduces the steel corrosion. The corrosion rate decreases 3.7-6.9 times and the protection degree increases to 73.3-85.3%, depending on the testing time and inhibitor concentration. A mechanism of inhibition is proposed.