Evaluation of corrosion performance of a self-healing epoxy-based coating containing linseed oil-filled microcapsules via electrochemical impedance spectroscopy

2017 ◽  
Vol 105 ◽  
pp. 212-224 ◽  
Author(s):  
M. Behzadnasab ◽  
S.M. Mirabedini ◽  
M. Esfandeh ◽  
R.R. Farnood
Keyword(s):  
Electrochemical Impedance Spectroscopy ◽  
Impedance Spectroscopy ◽  
Electrochemical Impedance ◽  
Linseed Oil ◽  
Self Healing ◽  
Corrosion Performance

Effect of Doping of Nanoparticles on the Properties of Zn-Ni Composite Coatings

2018 ◽  
Vol 18 ◽  
pp. 19-26
Author(s):  
Nadjette Belhamra ◽  
Abd Raouf Boulebtina ◽  
Khadidja Belassadi ◽  
Abdelouahed Chala ◽  
Malika Diafi
Keyword(s):  
Corrosion Resistance ◽  
Electrochemical Impedance Spectroscopy ◽  
Impedance Spectroscopy ◽  
Electrochemical Impedance ◽  
Steel Substrate ◽  
Composite Coatings ◽  
Alloy Coating ◽  
Corrosion Performance ◽  
X Ray ◽  
Ni Alloy

The purpose of this paper was to investigate the effect of Al2O3 and TiO2 nanoparticles contents on structural proporties, microhardness and corrosion resistance of Zn-Ni alloy coationg. Zn-Ni, Zn-Ni-Al2O3 and Zn-Ni-TiO2 composite coatings were electrodeposited on steel substrate by direct current in sulphate bath.The structure of the coatings was studied by X-ray diffration and by scaning electron miroscopy. The results showed the appearance of Ni5Zn21 phases and that the incrorporation of Al2O3 and TiO2 in the Zn-Ni coating refined the crystal grain size.The corrosion performance of coating in the 0.6M NaCl as a corrisive solution was investigated by potentiodynamic polarization and electrochemical impedance spectroscopy EIS methods. It was found that the incorporation of nanoparticules in Zn-Ni alloy coating have better corrosion resistance and the values of Rct and Zw increase, while the values of Cdl decrease with increasing of nanoparticules.

Evaluation of corrosion performance of ultra-thin Si-DLC overcoats with electrochemical impedance spectroscopy

2002 ◽  
Vol 11 (3-6) ◽  
pp. 1124-1129 ◽  
Author(s):  
P. Papakonstantinou ◽  
J.F. Zhao ◽  
A. Richardot ◽  
E.T. McAdams ◽  
J.A. McLaughlin
Keyword(s):  
Electrochemical Impedance Spectroscopy ◽  
Impedance Spectroscopy ◽  
Electrochemical Impedance ◽  
Corrosion Performance

scholarly journals Effect of the Diesel, Inhibitor, and CO2Additions on the Corrosion Performance of 1018 Carbon Steel in 3% NaCl Solution

2014 ◽  
Vol 2014 ◽  
pp. 1-10 ◽  
Author(s):  
J. Porcayo-Calderon ◽  
M. Casales-Diaz ◽  
L. M. Rivera-Grau ◽  
D. M. Ortega-Toledo ◽  
J. A. Ascencio-Gutierrez ◽  
...  
Keyword(s):  
Electrochemical Impedance Spectroscopy ◽  
Carbon Steel ◽  
Impedance Spectroscopy ◽  
Steel Surface ◽  
Adsorption Process ◽  
Electrochemical Impedance ◽  
Water Soluble ◽  
Nacl Solution ◽  
Corrosion Performance ◽  
Soluble Fractions

In order to determine the diesel contribution in the coadsorption process of the oil-soluble inhibitors, electrochemical impedance spectroscopy measurements have been carried out to study the performance of oil-soluble inhibitors in both presence and absence of diesel and CO2. The results showed that the presence of the oil phase provides some protection to the steel because the water-soluble fractions are capable of being adsorbed on the steel surface thereby reducing the corrosion rate. The oily phase does not contribute to the adsorption process of the inhibitor because the inhibitor is absorbed into the water-soluble fractions. The oil-soluble inhibitors are effective only when the solution is saturated with CO2. CO2saturation causes a decrease in the pH of the solution causing both an increase of the inhibitor solubility and a better dispersion of the inhibitor into the electrolyte.

scholarly journals Corrosion Behaviour of a Silane Protective Coating for NdFeB Magnets in Dentistry

2015 ◽  
Vol 2015 ◽  
pp. 1-7 ◽  
Author(s):  
Luigi Calabrese ◽  
A. Caprì ◽  
F. Fabiano ◽  
L. Bonaccorsi ◽  
C. Borsellino ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Rare Earth ◽  
Electrochemical Impedance Spectroscopy ◽  
Impedance Spectroscopy ◽  
Electrochemical Impedance ◽  
Corrosion Behaviour ◽  
Corrosion Performance ◽  
Aging Effects ◽  
Force Displacement ◽  
Anticorrosion Properties

The corrosion behavior of coated and uncoated Ni/Cu/Ni rare earth magnets was assessed at increasing steps with a multilayering silanization procedure. Magnets’ durability was analyzed in Fusayama synthetic saliva solution in order to evaluate their application in dental field. Corrosion performance was evaluated by using polarization and electrochemical impedance spectroscopy in synthetic saliva solution up to 72 hours of continuous immersion. The results show that the addition of silane layers significantly improved anticorrosion properties. The coating and aging effects, in synthetic saliva solution, on magnetic field were evaluated by means of cyclic force-displacement curves.

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