INNOVATIVE PASSIVATION FILM ON GALVANIC ZINC COATINGS BASED ON TANNIN AND GELATIN
N. Boshkova, L. Lutov, N. Tabakova, N. Boshkov
Pages: 172-179
Published: 16 Nov 2022
Views: 1,124
Downloads: 107
Abstract: Steels are widely applied traditional materials in the transport industry as well as for buildings, bridges, railway facilities etc. However, their application often leads to significant financial expenses due to the need for increased protection against corrosion destruction. This protection can be realized by usage of additional passive films on the metal surface. Tannin and gelatin are well known environmentally friendly natural products, they are easily accessible and profitable from a financial point of view. The chemical interaction of tannin and gelatin with each other, as well as with metal ions ensure the possibility for bonding the layers with both the zinc base as well as the individual layers for each other to form a sandwich structure. Galvanized low-carbon steel with such a film has been placed in a 5% NaCl solution and its corrosion behavior was compared with that of the ordinary zinc coating. The results demonstrate the positive influence of the passive film on the protective characteristics of the zinc layer in chloride containing medium.
Keywords: passivation film, zinc coating, corrosion, gelatin
Cite this article: N. Boshkova, L. Lutov, N. Tabakova, N. Boshkov. INNOVATIVE PASSIVATION FILM ON GALVANIC ZINC COATINGS BASED ON TANNIN AND GELATIN. Journal of International Scientific Publications: Materials, Methods & Technologies 16, 172-179 (2022). https://www.scientific-publications.net/en/article/1002519/
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