низьковуглецева сталь


The corrosion resistance of steel with modified inhibitory pigments and polyurethane protective coatings was studied by impedance and electrochemical methods. It was found that the combination of a mixture of molybdate / zinc phosphate and calcium silicate in the polyurethane soil due to the synergistic effect enhances its protective properties. Impedance studies have confirmed the increase in anti-corrosion characteristics of such a system.

Food Additives as Factor of Corrosion of Mild Steel in Neutral Solution

It has been showed that food additives E451 and E459 inhibit corrosion in neutral water-salt medium and additives E316, E631, E621, E631+E551, herbs and spices increased it up to 1.75 times. Under microbial corrosion condition, inducted by sulfate-reducing bacteria, inhibition action (up to 80.9%) was discovered only for additive E459. Other studied additives increased microbial corrosion up to 2.27 times. The presence of food additives in corrosive medium influences the quantity of sulfate-reducing bacteria in biofilm on steel surface.

Aminooxoethylpyridinium Chlorides as Inhibitors of Mild Steel Acid Corrosion

Aminooxoethylpyridinium chlorides under the St3ps steel corrosion in acid hydrochloric and sulfuric solutions demonstrate the inhibition efficiency at 98 %. The compound with hydrazinocarbonyl and 2,3- dimethylphenyl fragments turns out to be the most effective within the interval 293–333 К. This inhibitor is also characterized by a significant aftereffect due to the chemisorption on the steel surface.