EFFECT OF METAL SURFACE MICROSTRUCTURE ON THE PERFORMANCE OF CORROSION INHIBITORS

 

In collaboration with the corrosion electrochemistry Group @ the State Key Lab for Corrosion and Protection, Institute of Metal Research, Shenyang-China, we are investigating corrosion inhibition mechanisms on polycrystalline and nanocrystalline metal surfaces, with a view to deciphering the sensitivity of the interfacial processes to modifications in metal surface microstructure. Through an innovative mode of atomic force microscopy (AFM), the structure of the adsorbed inhibitor films on both surfaces can be visualized. Our findings reveal that the ordering of inhibitor molecules on the surfaces depends ab initio on the electronic structures of the inhibitor molecules as well as on the nature of thee interaction with the polycrystalline metal surface.

 

E.E. Oguzie, Y. Li, S.G. Wang, F.H. Wang (2011) Understanding corrosion inhibition mechanisms – Experimental and theoretical approach, RSC Advances, Vol. 1, pp. 866 – 873.

E.E. Oguzie, Y. Li, F.H. Wang (2007) Effect of surface nanocrystallization on corrosion and corrosion inhibition of low carbon steel: Synergistic effect of methionine and iodide ion, Electrochimica Acta, Vol. 52 pp. 6988 – 6996.

E.E. Oguzie, S.G. Wang, Y. Li, F.H. Wang (2007) Corrosion and corrosion inhibition characteristics of bulk nanocrystalline ingot iron in sulphuric acid, Journal of Solid State Electrochemistry, Vol. 12, pp. 721 – 728.

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