інгібітори

Synergistic Effect of BaCl2 on Corrosion Inhibition of Copper by Mentha Spicata Oil in 1M Nitric Acid: Gravimetric and Raman Spectroscopy Studies

The effect of Mentha Spicata oil and the mixture of BaCl2 and Mentha Spicata oil on corrosion of copper in 1M HNO3 have been investigated using weight loss methods and Raman spectroscopy. The study revealed that copper is more efficiently inhibited by Mentha Spicata oil in the presence of BaCl2 than pure oil. The inhibition efficiencies increased with increased concentration of the additives. The highest inhibition efficiency of 56.12 % was observed with single Mentha Spicata oil.

Complex Corrosion Protection of Tubing in Gas Wells

Analysis of the efficient complex application of zinc coatings such as sherardizing on tubing surface and carbon dioxide inhibitors during the natural gas extraction on Lutsenkivske gas condensate deposit wells has been carried out. Microstructural and electrochemical investigations of zinc diffusion layer have been conducted. Existing industrial experience shows that the complex corrosion protection significantly increases the life of wells, which significantly increases the economic performance and prevents environmental pollution.

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.

Biocorrosion of metal sewage treatment constructions and its inhibition with pyridinium chlorides

On the metal sewage treatment constructions (Chernihiv, Ukraine) a biofilm is formed, which is corrosive because of the number of sulfate-reducing bacteria (107 cell/cm2). By affecting sulfate-reducing activity of microorganisms, pyridinium chlorides at the concentration of 0.5 g/l were revealed to provide St3ps steel inhibition efficiency of up to 98.7 % under the corrosion caused by biofilm bacteria.