Investigation of corrosion behavior of galvanized mild steel by improved Zn acidic bath, containing nano-ZnO particles

Subject Areas : Corrosion and protection of materials

Behrooz  Shayegh ¹ (shahrekord university)

Received: 2016-03-17 Accepted : 2016-03-29 Published : 2016-03-01

Keywords: Acidic zinc bath, nano- ZnO coating, Zinc electroplating, Electrochemical deposition,

Abstract :

In this study, nano-ZnO particles were deposited on mild steel sheets from an acidic zinc bath. These particles were synthesized by using an auto combustion technique. The effect of concentration of nano- ZnO particles on the corrosion behavior of depositions was investigated. The results of salt spray tests and electrochemical measurements showed that corrosion resistance is improved by addition of nano-ZnO particles into acidic zinc bath. Based on results, coating contain 0.5g of zinc oxide nano-particles had lowest corrosion rate (1.022mpy) and high corrosion resistance. Scanning electron microscopy (SEM) and X- ray diffraction (XRD) were used for studying the surface morphology and crystal structure of the zinc deposit. SEM observations showed that zinc-oxide nano-particles by absorption of the corrosive agents had action as a barrier against corrosive environment. The study of XRD pattern showed that the adding of nano ZnO was decreased the amount of corrosion products which indicated a higher corrosion resistance than the sample without any nano-particles.

References:

References

1. V. A. Paramonov, V. V. Levenkov, "Production of automobile sheet with coatings" Metallurgist, Vol. 48, 2004, pp. 473.


2. S. Swathirajan,” Potentiodynamic and Galvanostatic Stripping Methods for Characterization of Alloy Electrodeposition Process and Product” J. Electrochem. Soc. Vol. 133, No. 4, 1986, pp. 671.


3. S. Langard, T. Norseth, Hand Book of the Toxicity of Metals, Elsevier, New York, 1979.


4. B.M. Praveen, T.V. Venkatesha,” Generation and Corrosion Behavior of Zn-Nano Sized Carbon Black Composite Coating “ Int. J. Electrochem. Sci., Vol. 4, 2009, pp. 258.


5. C. Müller, M. Sarret, E. Garcia, J. A. Ortega, “Cr-Free Passivation on ZnNi Alloys” J. Electrochem. Soc. Vol. 151, No. 2, 2004, pp. 149.


6. H. B. Muralidhara, Y. Arthoba Naik, H. P. Sachin, T. V. Venkatesha,K. G. Kariyanna, "Electrodeposition of Zinc-iron alloy from a sulphate bath" Trans. SAEST, Vol. 39, 2004, pp. 39.


7. M. S. Chandrasekar, S.  Shanmugasigamani, M. S. Malathy Pushpavanam Chandrasekar, S. Shanmugasigamani, P. Malathy,” Properties of Zinc alloy electrodeposits produced from acid and alkaline electrolytes” J Solid State Electrochem, Vol. 13, 2009, pp.781.


8. S.Rajendran, S.Bharathi, and T.Vasudevan,” The Electrodeposition of zinc-nickel alloy from a cyanide free alkaline plating bath” Trans.Inst.Mat.Fin. Vol. 78, No. 3, pp.129.


9. Y. Arthoba Naik, PhD Thesis, Kuvempu University, India, 2002.


10. C. Cheung, D. Wood, U. Erb, In Proceedings and Properties of Nanocrystalline Materials by C Suryanarayana et al. TMS Publication, Warrendale, PA, 1996, pp. 479.


11. R.B. Inturi, Z. Szklarska-Smialowska, ”Localized corrosion of nanocrystalline 304 type stainless steel films” Corrosion Vol. 48, No. 5, 1992, pp. 398.


12. R. Starosta, A. Zielinski, "Effect of chemical composition on corrosion and wear behavior of the composite Ni-Fe-Al2O3 coatings" J. Mater. Process. Technol. Vol. 157-158, 2004, pp. 434.


13. G. N. K. R. Bapu, S. Jayakrishnan, "Oxidation characteristics of electrodeposited nickel-zirconia composites at high temperature" Mater. Chem. Phys. Vol. 96, 2006, pp. 321.


14. H. Wang, S. Yao, S. Matsumura, "Electrochemical preparation and characterization of Ni/SiC gradient deposit" J. Mater. Process. Technol. Vol. 145, 2004, pp. 299.


15. F. Ebrahimi, H. Q. Li, "Structure and properties of electrodeposited nanocrystalline FCC Ni-Fe alloys" Rev. Adv. Mater. Sci. Vol. 5, 2003, pp. 134.


16. A.M. EI-Sherik, U. Erb, "Synthesis of Bulk Nanocrystalline Nickel by Pulsed Electrodeposition" J. Mater. Sci., Vol. 30, 1995, pp. 5743.


17. H. R. Ghorbani, F. Parsamehr, H. Pazoki, B. M. Rahmani, "Synthesis of ZnO Nanoparticles by Precipitation Method" Orient. J. Chem., Vol. 31, 2015, pp. 1219.


18. K. Arora, S. Devi, V. S. Jaswal, J. Singh, M. Kinger, V. D. Gupta, "Synthesis and Characterization of ZnO Nanoparticles" Orient. J. Chem., Vol. 30, 2014, pp. 1671.


19. S. Hashimoto, M. Abe, "Characterization of electrodeposited Zn-SiO2 composites before and after test", Corros. Sci. Vol. 36, 1994, pp. 2125.


20. Y. Arthobanaik, T.V. Venkatesha, " A new condensation product for zinc plating from non-cyanide alkaline bath" Bull. Mater. Sci. Vol. 28, 2005, 495.


21. Suzuki, "The behavior of corrosion products on zinc in sodium chloride solution" Corros. Sci. Vol. 25, 1985, pp. 1029.


22. T. E. Graedel, " Corrosion Mechanisms for Zinc Exposed to the Atmosphere" J. Electrochem. Soc. Vol. 136, 1989, pp. 193.


23. P. Yadav, A. Nishikata, T. Tsuru, "Degradation Mechanism of Galvanized Steel in Wet-dry Cyclic Environment Containing Chloride Ions" Corros. Sci. Vol. 46, 2004, pp. 361.


24. D. Fuenta, J. G. Castano, M. Morcillo, "Long-term atmospheric corrosion of zinc" Corros. Sci. Vol. 49, 2007, pp. 1420.