Atomic force microscopy and electrochemical investigation on the corrosion behavior of carbon steel passivated by molybdate and chromate

2012 ◽  
Vol 76 (2) ◽  
pp. 173-177 ◽  
Author(s):  
Zhenyu Chen ◽  
Xiulan Zhang ◽  
Ling Huang ◽  
Xingpeng Guo
Keyword(s):  
Atomic Force Microscopy ◽  
Carbon Steel ◽  
Corrosion Behavior ◽  
Electrochemical Investigation ◽  
Force Microscopy ◽  
Atomic Force

scholarly journals Nanoscale corrosion behavior of polycrystalline copper fine wires in dilute NaCl solution investigated by in-situ atomic force microscopy

2016 ◽  
Vol 105 ◽  
pp. 177-182 ◽  
Author(s):  
Shoichiro Ogata ◽  
Naritaka Kobayashi ◽  
Takuya Kitagawa ◽  
Shohei Shima ◽  
Akira Fukunaga ◽  
...  
Keyword(s):  
Atomic Force Microscopy ◽  
Corrosion Behavior ◽  
Polycrystalline Copper ◽  
Nacl Solution ◽  
Force Microscopy ◽  
Atomic Force

scholarly journals Inhibitory Properties of Neomycin Thin Film Formed on Carbon Steel in Sulfuric Acid Solution. Electrochemical and AFM Investigation

2017 ◽  
Author(s):  
Adriana Samide ◽  
Gabriela Eugenia Iacobescu ◽  
Bogdan Tutunaru ◽  
Roxana Grecu ◽  
Cristian Tigae ◽  
...  
Keyword(s):  
Atomic Force Microscopy ◽  
Sulfuric Acid ◽  
Carbon Steel ◽  
Acid Solution ◽  
Sulfuric Acid Solution ◽  
Steel Surface ◽  
Protective Layer ◽  
Force Microscopy ◽  
Atomic Force ◽  
Neomycin Sulfate

Our study aims to implement a strategy to reduce the carbon steel corrosion rate in sulfuric acid solution, using an expired drug with adsorption affinity on the metal surface. To investigate the corrosion protection efficiency of an environmental friendly inhibitor, namely neomycin sulfate (NMS), the electrochemical measurements were applied on carbon steel immersed in 1.0 M H2SO4 solution with and without NMS. The protective layer formed on the steel surface was studied by atomic force microscopy (AFM). The potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) showed that the presence of the neomycin sulfate in acid solution leads to the decrease in corrosion current density (icorr) and the increase of polarization resistance (Rp). The mixed mechanism between physical and chemical adsorption of NMS molecules on the steel surface was proposed according to the Langmuir adsorption isotherm. The Atomic Force Microscopy (AFM) indicated that the NMS molecules contributed to a protective layer formation by their adsorption on the steel surface. The AFM parameters such as: root-mean-square roughness (Rq); average roughness (Ra) and maximum peak to valley height (Rp-v) revealed that in the presence of NMS a smoother surface of carbon steel was obtained, compared to the steel surface corroded in sulfuric acid blank solution.

An evaluation of the corrosion behavior of aluminum surfaces in presence of fungi using atomic force microscopy and other tests

2007 ◽  
Vol 54 (5) ◽  
pp. 289-293 ◽  
Author(s):  
A.M.A. Silva ◽  
T.M. Santiago ◽  
C.R. Alves ◽  
M.I.F. Guedes ◽  
J.A.K. Freire ◽  
...  
Keyword(s):  
Atomic Force Microscopy ◽  
Corrosion Behavior ◽  
Force Microscopy ◽  
Atomic Force ◽  
Aluminum Surfaces

scholarly journals Effect of Electrodeposition Parameters on the Morphology, Topography and Corrosion Resistance of Epoxy Resin/Zinc Hybrid Coatings

Materials ◽  
2021 ◽  
Vol 14 (8) ◽  
pp. 1991
Author(s):  
Alina Crina Mureşan ◽  
Daniela Laura Buruiană ◽  
Gina Genoveva Istrate ◽  
Ştefan Cătălin Pintilie
Keyword(s):  
Atomic Force Microscopy ◽  
Corrosion Resistance ◽  
Epoxy Resin ◽  
Corrosion Behavior ◽  
Hybrid Coatings ◽  
Polymer Particles ◽  
Force Microscopy ◽  
Atomic Force ◽  
Zinc Coatings ◽  
Reducing Bacteria

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.

scholarly journals Studying carbon steel by atomic force microscopy

2018 ◽  
Author(s):  
G. V. Shlyakhova ◽  
L. B. Zuev ◽  
E. A. Popova
Keyword(s):  
Atomic Force Microscopy ◽  
Carbon Steel ◽  
Force Microscopy ◽  
Atomic Force
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