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COMPOSITES AND MULTIPURPOSE COATINGS
ArticleName Investigation of the influence of mineral wool insulation materials on the corrosion resistance of hot-dip galvanized steel
DOI 10.17580/tsm.2018.03.09
ArticleAuthor Volkova O. V., Dub A. V., Rakoch A. G., Safonov I. A.
ArticleAuthorData

National University of Science and Technology MISiS, Moscow, Russia:

O. V. Volkova, Researcher of a Chair of Steel Metallurgy, New Production Technologies and Metal Protection, e-mail: expertcorr@gmail.com
A. V. Dub, Professor of a Chair of Steel Metallurgy, New Production Technologies and Metal Protection, e-mail: AlVDub@rosatom.ru
A. G. Rakoch, Professor of a Chair of Steel Metallurgy, New Production Technologies and Metal Protection, e-mail: rakoch@mail.ru
I. A. Safonov, Assistant Professor of a Chair of Steel Metallurgy, New Production Technologies and Metal Protection, e-mail: iasafonov@cniitmash.com

Abstract

The paper presents the results of a study on corrosion of a zinc coating, applied to the surface of carbon steel by the method of hot galvanizing, under conditions of moisture condensation on their surface in contact with heatinsulating materials with different characteristics: fiber types, and multicomponent binder composition. The influence of mineral wool heatinsulating materials of three types: stone and glass wool with binder based on plant components and phenol-formaldehyde resin, on the corrosion resistance of galvanized steel was investigated. These materials are widely used in building structures. Comparative corrosion tests were carried out under conditions of experimental modelling of the “dew-point” temperature for obtaining 100% relative humidity at the metal-insulator interface. It was established that in order to reduce the degree of aggressiveness with respect to galvanized steels, the heaters are arranged in the following order: quartzite with a binder based on phenol-formaldehyde resin; glass-fiber with a binder of a similar type and glass-fiber with a vegetable binder. Electrochemical studies confirmed the lowest aggressiveness of glass-fiber insulation with a vegetable binder compared to the corrosiveness of other heaters. It was proved that the longest period of operation without signs of corrosion of the steel base, even if moisture condenses, occurs in the case of galvanized profiles that are in contact with heaters with vegetable binders in comparison to phenolformaldehyde resin binders.

keywords Hot-dip galvanized steel, corrosion resistance, heat-insulating materials, multicomponent binders, aggressiveness, dew-point temperature, polarization curves
References

1. Astalyukhina A. S., Pikalov E. S. Characteristics of modern methods of applying protective zinc coatings. Uspekhi sovremennogo estestvoznaniya. 2015. No. 11-1. pp. 11–14.
2. SP 260.1325800.2016. Steel thin-walled structures made of cold-bent zinccoated profiles and chaneled plates. Design rules.
3. Kuklík V., Kudláek J. Hot-Dip Galvanizing of Steel Structures. Amsterdam : Elsevier, 2016. pp. 133–143.
4. Dub A. V., Volkova O. V. Techniques of assessment and forecasting of corrosion resistance of construction metalwork in different climatic zones. Novosti materialovedeniya. Nauka i tekhnika. 2016. No. 6 (24). p. 2.
5. Rozenfeld I. L. Corrosion and protection of metals. Moscow : Metallurgiya, 1969. 448 p.
6. Herbert H. Uhlig, R. Winston Revie. Corrosion And Corrosion Control. An Introduction To Corrosion Science And Engineering. Ed.: A. M. Sukhotin. Translated from English. Leningrad : Khimiya, 1989. 456 p.
7. Duchoslav J., Steinberger R., Arndt M., Keppert T., Luckeneder G., Stellnberger K. H., Hagler J., Angeli G., Riener C. K., Stiftera D. Evolution of the surface chemistry of hot dip galvanized Zn – Mg – Al and Zn coatings on steel during short term exposure to sodium chloride containing environ ments. Corrosion Science. 2015. Vol. 91. pp. 311–320. DOI: 10.1016/j.corsci.2014.11.033
8. Evandro de Azevedo Alvarenga, Vanessa de Freitas Cunha Lins. Atmospheric corrosion evaluation of electrogalvanized, hot-dip galvanized and galvannealed interstitial free steels using accelerated field and cyclic tests. Surface and Coatings Technology. 2016. Vol. 306, Part B. pp. 428–438.
9. Salgueiro Azevedo M., Allély C., Ogle K., Volovitch P. Corrosion mechanisms of Zn(Mg, Al) coated steel in accelerated tests and natural exposure: 1. The role of electrolyte composition in the nature of corrosion products and relative corrosion rate. Corrosion Science. 2015. Vol. 90. pp. 472–481.
10. Yasakau K. A., Kallip S., Lisenkov A., Ferreira M. G. S., Zhelud kevich M. L. Initial stages of localized corrosion at cut-edges of adhesively bonded Zn and Zn – Al – Mg galvanized steel. Electrochimica Acta. 2016. Vol. 211. pp. 126–141.
11. Cross S. R., Gollapudi S., Schuh C. A. Validated numerical modeling of galvanic corrosion of zinc and aluminum coatings. Corrosion Science. 2014. Vol. 88. pp. 226–233.
12. GOST 9.307–89. Unified system of corrosion and ageing protection. Hotdip zinc coatings. General requirements and methods of control. Introduced: 1990-07-01.
13. GOST 9.311–87. Unified system of corrosion and ageing protection. Metal and non-metal inorganic coatings. Method of corrosion damage evaluation. Introduced: 1988-07-01.
14. GOST R 51369–99. Climatic environment stability test methods for machines, instruments and other industrial products. Test for influence of humidity. Introduced: 2002-07-01.

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