The paper presents the results of a study on the development of a primer-free enamel frit with increased chemical resistance to acids and alkalis, designed to protect steel pipelines. Zinc oxide was introduced into the composition of the frit, which helps to increase the resistance due to the higher chemical bond energy of the ion with oxygen compared with alkali metal ions. At the same time, the ZnO content is up to 10 wt. % reduces the frit's flow temperature. The experimental frit meets the standard requirements for spreading capacity (45 mm) and coefficient of thermal expansion (112?10–7 K–1). The introduction of zinc oxide in the amount of 5 wt. % in industrial borosilicate enamel leads to an increase in its chemical resistance by 4 times to acids and 8 times to alkalis compared to traditional industrial frit.
Vitaly Yu. Borovoy – engineer of the Department of Applied Mechanics and Materials Science, Tomsk State University of Architecture and Civil Engineering (TSUAB), Tomsk, Russia
Olga V. Kazmina – Doctor of Technical Sciences, Professor at the N. M. Kizhner Scientific and Educational Center, Engineering School of New Production Technologies (ESNPT), Tomsk Polytechnic University, Tomsk, Russia
Valentin V. Shekhovtsov – Ph.D. in Engineering, Associate Professor at the Department of Applied Mechanics and Materials Science, Tomsk State University of Architecture and Building (TSUAB), Tomsk, Russia
Kirill V. Skirdin – Ph.D. in Engineering, researcher at the N. M. Kizhner Scientific and Educational Center, Engineering School of New Production Technologies (ISNPT), Tomsk Polytechnic University, Tomsk, Russia; Tomsk State University of Architecture and Building (TSUAB), Tomsk, Russia
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DOI: 10.14489/glc.2025.04.pp.037-043
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