Open AccessOPPORTUNITIES TO INCREASE THE CORROSION RESISTANCE OF BUILDING STRUCTURES OPERATING IN AGGRESSIVE PRODUCTION ENVIRONMENTS
Author(s) -
Alekseej Kolobanov,
Linar Sabitov,
Н. В. Тарасова
Publication year - 2020
Publication title -
stroitelʹstvo i arhitektura
Language(s) - English
Resource type - Journals
eISSN - 2500-1477
pISSN - 2308-0191
DOI - 10.29039/2308-0191-2020-8-3-29-35
Subject(s) - corrosion , crystallite , metallurgy , materials science , zinc , service life , hydrogen chloride , coating , relative humidity , chloride , humidity , composite material , chemistry , inorganic chemistry , physics , thermodynamics
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.