Optimization of the protective enamel coatings composition for main pipelines in order to prevent technogenic accidents Part 1. Investigation of the effect of the diffusion mobility of nickel cations in a model melt on the adhesion strength of ground enamel to steel

Optimization of the protective enamel coatings composition for main pipelines in order to prevent technogenic accidents Part 1. Investigation of the effect of the diffusion mobility of nickel cations in a model melt on the adhesion strength of ground enamel to steel

Dobrynina N.Yu.1, Ph.D. of Chemical Sciences; Vatolina N.D.2, Ph.D. of Chemical Sciences, Docent; Vatolin A. N.2, Holder of an Advanced Doctorate (Doctor of Science) in Chemical Sciences, Full Professor
1Ural Institute of State Fire Service of EMERCOM of Russia
2Ural Federal University

This article presents the results of studies of the nickel cations diffusion mobility in an equimolar potassium borosilicate melt, which is the basis of ground enamel for insulating main pipelines. It was found that in the region of nickel oxide solubility (up to 3.0 wt% NiO), the diffusion coefficients changed by 2-4 orders of magnitude depending on the study temperature, which is explained by polymerization-depolymerization reactions in borosilicate melt.

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