Lipeck, Lipetsk, Russian Federation
employee
Kazan', Kazan, Russian Federation
Lipeck, Lipetsk, Russian Federation
This paper presents the results of a study of the corrosion resistance of building structures OF NLMK's CCPP and CDP. It was found that the average percentage of damage is 8.69%, and the areas with high humidity and gas emissions have the greatest corrosion wear of elements. Using a mathematical model of corrosion for zinc and steel, their expected corrosion losses are calculated. It is shown that the greatest mass loss is observed in areas with a concentration of hydrogen chloride above the background value. The results of accelerated corrosion tests of a zinc coating with a crystallite size from 0.6 to 3.5 microns showed that reducing the crystallite size to 0.6 microns reduces the corrosion rate by 2 times, which should increase the service life of the structure by 1.5-2 times compared to traditional materials.
corrosion resistance, assessment of the technical condition of building structures, Zn-coating
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