Platov South-Russian State Polytechnical University (NPI) (Novocherkassk, Russia)
E. A. Yatsenko, Dr. Eng., Prof., Head of the Dept. of General Chemistry and Technology of Silicates, Head of the Lab. of Fuel Energy Waste Recycling, e_yatsenko@mail.ru
A. I. Izvarin, Assistant, Dept. of General Chemistry and Technology of Silicates, Research Engineer, Lab. of Fuel Energy Waste Recycling, andre.izvarin@yandex.ru
A. V. Ryabova, Cand. Eng., Associate Prof., Dept. of General Chemistry and Technology of Silicates, Senior Researcher, Lab. of Fuel Energy Waste Recycling, annet20002006@yandex.ru
B. M. Goltsman, Cand. Eng., Associate Prof., Dept. of General Chemistry and Technology of Silicates, Senior Researcher, Laboratory of Fuel Energy Waste Recycling, boriuspost@gmail.com
V. M. Kurdashov, Postgraduate Student, Dept. of General Chemistry and Technology of Silicates, Engineer, Lab. of Fuel Energy Waste Recycling, viktorkurdashov@yandex.ru
V. D. Tkachenko, Postgraduate Student, Dept. of General Chemistry and Technology of Silicates, Engineer, Lab. of Fuel Energy Waste Recycling, tkachenko.vadik2014@yandex.ru
This paper addresses the pressing issue of increasing the reliability and durability of steel trunk pipelines in the Russian oil and gas industry. Corrosion is shown to be a leading cause of accidents (48 % of failures), necessitating the use of effective barrier coatings. A comparative analysis of seven types of protective coatings was conducted: epoxy, polyurethane, polyolefin, zinc, nickel, cement, and glass enamel. It was established that glass enamel coatings offer the greatest potential, outperforming alternatives in key parameters: a service life exceeding 50 years, adhesion strength reaching 70 – 150 MPa, an operating temperature range of –60 to +400 °C, and high chemical resistance to acids and alkalis. A detailed analysis of the chemical compositions of glass enamels in the aluminoborosilicate system RO–R2O–B2O3–Al2O3–SiO2 was performed, and optimal oxide concentrations in this system were determined. Data on the influence of modifying additives (ZrO2, Na3AlF6, ZnO, molybdates, Co and Ni oxides) on chemical and corrosion resistance and adhesion are systematized. It is shown that zirconium dioxide provides the greatest increase in chemical (40 – 90 %) and corrosion resistance (30 – 60 %), while cryolite and nickel oxides with cobalt most effectively increase adhesion (15 – 30 %). A promising direction for further research is the development of multicomponent compositions that provide comprehensive performance improvements. Implementation of these approaches will significantly reduce the number of corrosion-related accidents and improve the safety and cost-effectiveness of hydrocarbon pipeline transportation.
This research was supported by the Russian Science Foundation grant No. 25-49-00002, https://rscf.ru/project/25-49-00002/ “Principles of Modifying Amorphized Inorganic Coatings with Improved Adhesion, Thermal Conductivity, and Corrosion Resistance for Energy Infrastructure Facilities” (Supervisor: E. A. Yatsenko).
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