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ENVIRONMENTALLY FRIENDLY SOLUTION FOR THE HOT DIP GALVANIZED COATINGS
Abstract
Lead-free solutions for protective coatings as an alternative for ecological galvanized steel sheets obtaining were studied in this paper. The lead from zincing baths was eliminated and replaced with bismuth as non hazardous elements. Also other alloying elements (nickel, tin, and aluminium) in zinc melts were added. The making technology of these galvanizing free-lead alloys wa s established in accordance with alloying elements properties. The tec hnological conditions for obtai ning zinc-bismuth coatings with variable bismuth contents are presented. Also the influence of this element on the characteristics of the melt and on the layers properties in correlation with the process parameters is discussed. The influence of the bismuth content on the morphology of the coating layer’s surface (by macroscopi c and microscopic analysis) and the microstructure of the coating were studied. The good corrosion behavior of the lead-free coatings was confirmed by electrochemical tests in an envir onment similar to a maritime environment.
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Basel Convention on the Control of Transboundary Movements of Hazardous Wastes and their Disposal, on www.basel.int/text/documents.html
Zervoudis J., AndersonG., A Review of Bath Alloy Additives and their Impact on the Quality of the Galvanized Coating, Teck Cominco Me tals Ltd. pp .2-5, 2004 on www.teck.com/tc/gg/pdf/presentations/APGGC_2005_Paper_Figures_Imbedded.pdf
Radu T., Potecasu Fl., Vlad M., Dragan V., Research on Obtaining and Characterization of Zinc Micro-Alloyed with Bismuth Coatings, Int. Conf. Metal 2010 Roznov pod Radhostem, Czech Republic, 18. ‐ 20 May, 2010
Alexa A., Ciocan A., Radu T., Potecasu Fl ., Microalloying of the Zinc for Obtaining Masteralloys or Correction of the Chemical Composition for the Zn Baths in the Galvanizing Process, VI Internationa l Materials Symposium MATERIAIS 2011, Guimarães, Portugal, 18-20 April, 2011
Pallavi Sharma; Rama Shanker Dubey, Lead toxicity in plan ts, Braz. J. Plant Physiol. vol.17, no.1, Londrina, Jan./Mar.2005
Ernst WHO, Effects of heavy metals in pl ants at the cellular a nd organismic levels, Schuurmann G (ed), Ecotoxicology: Ecologica l Fundamentals, Chemical Exposure and Biological Effects, Heidelberg, Wiley, pp. 587-620, 1998
Gearhart J., Menke D., Griffith C., M ills K., Getting the Lead out. Impacts and Alternatives for Automotive Lead Uses, July 2003 on www.ecocenter.org/publications/.../GettingLeadOut.pdf
Liberski P., Gierek A., Kania H., Podol ski P., Tatarek A., Formation of coatings from a liquid phase on the surface of iron-base alloys, Archieves of Foundry Engineering, Vol.8, No.4, pp.93 – 98, 2008
Inagaki J., Sakurai M., Watanab T., Alloying Reactions in Hot Dip Galvanizing and Galvannealing Processes, ISIJ International. Vol.35, No.11, pp.1388-1393, 1995
Mudry S., Plevachuk Yu., Sklyarchuk V., Yakymovych A., Viscosity of Bi–Zn Liquid Alloys, Journal of Non-Crystalline Solids No.354, pp.4415–4417, 2008
Malakhov D.V., Thermodynamic assessment of the Bi-Zn system, Calphad, Vol.24, No.1, pp.1-14, 2000
Kong G., Jintang LU, Qiaoyu XU, Inte rfacial Reaction Between Solid Nickel and Liquid Zinc, Journal of Wuhan University of Technology-Materials Science Edition, Vol.23, No.5, pp.712-716, 2010
Kong G., Jintang LU, Qiaoyu XU, Dissolu tion mechanism of solid nickel in liquid zinc saturated with Fe, Transaction of Nonferrous Metals Society of China No.17, pp.564-569, 2007
McMurray H.N., Localized Corrosion Beha vior in Aluminum-Zinc Alloy Coatings Investigated Using the Scanning Referen ce Electrode Technique, Corrosion, Vol.57, No.04, 2001
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