Peculiarities of corrosion inhibition by mixture of phosphate and calcium containing pigments
DOI:
https://doi.org/10.26577/2409-6121-2015-2-2-43-48Keywords:
Key words, Corrosion inhibition, pigments, organic primer, galvanized steel, DC polarization. PACS numbers, 81.65. knAbstract
Several possible alternatives to toxic chromate pigments have been considered for a variety of inhibitive applications. One of the more promising pigment combinations involves mixtures of phosphate and calcium ion-exchange pigments for inhibition of corrosion on organic coated galvanized steel. This paper presents recent work on a detailed study of the mechanisms of action of this mixture which has been established as effective in cut edge and zinc inhibition, but as less effective for inhibition of steel. The use of the blend of inhibitors is shown to result in the development of an adsorbed phosphate film on the metal which plays an important role in the development of anodic and cathodic inhibitive control. Zinc ions also appear to have an important synergistic effect on the film composition and structure increasing its coherence and decreasing its porosity. Traditional and localised electrochemical methods (EIS and SVET) were used in this study of corrosion of coated galvanized steel in artificial acid rain solution. The data confirms the anticorrosion efficiency of the pigment blend dispersed in organic coating on galvanized steel and reveals the peculiarities of their inhibiting action at coating defects.References
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[2] I.M. Zin, S.B. Lyon, S.J. Badger, J.D. Scantlebury, V.I. Pokhmurskii. The Effectiveness ofChromate-free Inhibiting Pigments in Coil-coated Galvanized Steel // Journal of Corrosion Science andEngineering. – 2009. – Vol.2. – P.21-32.
[3] I.M. Zin, V.I. Pokhmurskii, J.D. Scantlebury, S.B. Lyon. Model Electrochemical Cell Study of Cut-Edge Corrosion Inhibition on coil-Coated Steel Sheet by Chromate-, Phosphate-, and Calcium-Containing Pigments // Journal of the Electrochemical Society. – 2001. – Vol.148 (8). – P.293-298.
[4] G.Sh. Yar-Mukhamedova. Investigation of the Texture of Composite Electrodeposited hromium–Carbon Coatings. Materials Sciense. September. – 2000. – Vol.36. – Issue 5. – P. 752-754.
[5] M.O. Glushkova, M.V. Ved, M.D. Sakhnenko. Corrosion Properties of Cobalt–Silver Alloy Electroplates // Materials Science. – 2013. – Vol.49. – N.3. – P. 292-297.
[6] M.V. Ved, M.A. Glushkova, N.D. Sakhnenko. Catalitic properties of binary and ternary alloys based on silver // Functional Materials. – 2013. – Vol. 20. – N. 1. – P. 87-91.
[7] N.D. Sakhnenko, M.V. Ved, A.V. Karakurkchi. Elektro osazhdeniye pokrytiy splavom zhelezo-molibden // Voprosykhimii I khimicheskoi tekhnologii. – 2013. – N.4. – P. 178-182.
[8] M.V. Ved, N.D. Sakhnenko, A.V. Karakurchi, S.I. Zyubanova. Electro depositionof iron-molyb denum coatings from citrate electrolyte // Russian J. of Applied Chemistry. –2014. –Vol.87. –N3. – P.276-282.
[9] M.A. Glushkova, T.N. Bairachna, M.V. Ved, M.D. Sakhnenko. Electro deposited cobal alloy a materials for energy technology // Materials Research Society Symposium Proceedings. USA, Boston. – 2013. – P.1672.
[10] E.J. Podlaha. Inducedcodeposition: III. Molybdenumal loyswithnickel, cobalt and iron // J.of the Electrochemical Society. – 1997. – Vol.144. – N.5. – P. 1672-1680.
[11] M.V. Ved, N.D. Sakhnenko. Каtаlіtychni ta zakhysnip okryttya splavami I skladnymyok sidami: еlеktro khimichniy sintez, prognozuvannya vlastyvostei. – 2010. – P. 272.
[12] A.V. Karakurkchi, M.V. Ved, N.D. Sakhnenko. Elektroosazhdeniye dvoinikh I troinykh splavov zheleza iz tsitratnikh elektrolitov // Nanotekhnologii. Nauka Iproizvodstvo. – 2014. – T. 30. – N.3. – P. 24-26.
[13] G.Sh. Yar-Mukhamedova. A Mathematical Model of Formation of the Structure of Composite Films by the Cut-Off Method. Materials Sciense July – 2000. – Vol. 36. – N. 4. – P. 598-601.
[14] G.Sh. Yar-Mukhamedova. Resistance of Chromium and Nickel Composite Coatings. Materials Sciense November. – 2000. – Vol.36. – N. 6. – P. 922-924.
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Zin, I., Pokhmurskii, V., & Yar-Mukhamedova, G. (2016). Peculiarities of corrosion inhibition by mixture of phosphate and calcium containing pigments. Physical Sciences and Technology, 2(2). https://doi.org/10.26577/2409-6121-2015-2-2-43-48
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Nuclear Physics and Related Techology
