Protection from Acid Corrosion of St3 and 10X18N10T Steels with Inhibitors Based on Tree Bark Extracts

IF 1.1 4区材料科学 Q3 METALLURGY & METALLURGICAL ENGINEERING

Protection of Metals and Physical Chemistry of Surfaces Pub Date : 2025-02-18 DOI:10.1134/S2070205124702174

E. V. Shkol’nikov

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Abstract

The effect of temperature and composition of inhibitor compositions based on aqueous extracts of aspen bark (EXA), spruce (EXS), and pine (EXP) on the corrosion of St3 carbon steel in 2M sulfuric acid, used for etching steel products, and 10X18N10T(10Cr18Ni10Ti) austenitic steel in 1.4 M hydrochloric acid, used with the addition of an inhibitor for washing and chemical cleaning of cooking and heat exchange equipment, was studied for the first time using gravimetric and electrochemical methods. New data on the kinetics and mechanism of acid corrosion of the studied steels were obtained and analyzed. It has been shown that with the same content of 1 g/L inhibitory action Z water-extractive substances (WESs) of tree bark on acid corrosion of steels increases in the series EXP < EXS < EXA, as well as with an increase in the concentration of WES to 4.0 g/L and temperatures from 20 to 60°C, when mixing bark extracts of different species and even more significantly (Z = 90–97%) when hexamethylenetetramine or potassium iodide synergists are introduced into aqueous extracts¹.

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来源期刊

Protection of Metals and Physical Chemistry of Surfaces 工程技术-冶金工程

CiteScore

1.90

自引率

18.20%

发文量

审稿时长

4-8 weeks

期刊介绍： Protection of Metals and Physical Chemistry of Surfaces is an international peer reviewed journal that publishes articles covering all aspects of the physical chemistry of materials and interfaces in various environments. The journal covers all related problems of modern physical chemistry and materials science, including: physicochemical processes at interfaces; adsorption phenomena; complexing from molecular and supramolecular structures at the interfaces to new substances, materials and coatings; nanoscale and nanostructured materials and coatings, composed and dispersed materials; physicochemical problems of corrosion, degradation and protection; investigation methods for surface and interface systems, processes, structures, materials and coatings. No principe restrictions exist related systems, types of processes, methods of control and study. The journal welcomes conceptual, theoretical, experimental, methodological, instrumental, environmental, and all other possible studies.