Corrosion behavior of metallic surfaces in biodiesel evaluated by Atomic Force Microscopy, Vickers Micro Hardness, and Copper Strip Test

The paper presents the morphology, topography and corrosion behavior of epoxy resin/zinc hybrid coatings obtained by electrodeposition from zinc sulphate electrolyte. The effect of current density and mean diameter size of polymer particles used for electrodeposition of the epoxy resin/zinc coatings on the morphology, topography and roughness of the surfaces were investigated by Scanning Electron Microscopy and Atomic Force Microscopy. The corrosion behavior of the hybrid coatings in 0.5 M sodium chloride solution was evaluated using electrochemical methods. For microbiological corrosion, the effect of sulphate reducing bacteria (SRB) on the surfaces was evaluated using epifluorescence microscopy. The surface roughness before and after bacteria attachment was evaluated using Atomic force microscopy. Polymer particles provide an influence in restricting the growth of zinc crystals as well as a catalytic role in nucleation sites increase. The results of electrochemical tests indicate a very good corrosion resistance of hybrid coatings comparing with zinc coatings. Epifluorescence images demonstrate that hybrid coating surfaces are slightly attacked by sulphate reducing bacteria.

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Tip–surface interactions in atomic force microscopy: reactive vs. metallic surfaces

Applied Surface Science ◽

10.1016/s0169-4332(01)00945-x ◽

2002 ◽

Vol 188 (3-4) ◽

pp. 325-330 ◽

Cited By ~ 7

Author(s):

I. Štich ◽

P. Dieška ◽

R. Pérez

Keyword(s):

Atomic Force Microscopy ◽

Surface Interactions ◽

Metallic Surfaces ◽

Force Microscopy ◽

Atomic Force

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A Comparison of the Corrosion Behavior of WC-Co-Cr and WC-Co HVOF Thermally Sprayed Coatings by In Situ Atomic Force Microscopy (AFM)

CrossRef Listing of Deleted DOIs ◽

10.1361/105996302770348673 ◽

2002 ◽

Vol 11 (4) ◽

pp. 536-541 ◽

Cited By ~ 43

Author(s):

Joan M. Perry ◽

Anne Neville ◽

Trevor Hodgkiess

Keyword(s):

Atomic Force Microscopy ◽

Corrosion Behavior ◽

Force Microscopy ◽

Atomic Force ◽

Thermally Sprayed Coatings ◽

Thermally Sprayed ◽

Sprayed Coatings

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CORROSION BEHAVIOR OF ZIRCONIUM TREATED MILD STEEL WITH AND WITHOUT ORGANIC COATING: A COMPARATIVE STUDY

Surface Review and Letters ◽

10.1142/s0218625x14500887 ◽

2014 ◽

Vol 21 (06) ◽

pp. 1450088 ◽

Cited By ~ 4

Author(s):

ALIREZA GHANBARI ◽

MOHAMMADREZA MOHAMMADZADE ATTAR

Keyword(s):

Atomic Force Microscopy ◽

Electron Microscope ◽

Mild Steel ◽

Corrosion Behavior ◽

Electrochemical Techniques ◽

Organic Coating ◽

Corrosion Performance ◽

Force Microscopy ◽

Atomic Force ◽

Scanning Electron

In this study, the anti-corrosion performance of phosphated and zirconium treated mild steel (ZTMS) with and without organic coating was evaluated using AC and DC electrochemical techniques. The topography and morphology of the zirconium treated samples were studied using atomic force microscopy (AFM) and field emission scanning electron microscope (FE-SEM) respectively. The results revealed that the anti-corrosion performance of the phosphate layer was superior to the zirconium conversion layer without an organic coating due to very low thickness and porous nature of the ZTMS. Additionally, the corrosion behavior of the organic coated substrates was substantially different. It was found that the corrosion protection performance of the phosphate steel and ZTMS with an organic coating is in the same order.

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