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Characterization of the passive films on electrodeposited Fe-Ni-Cr alloys in borate solution at pH 8.4

100%
Sziráki L., Kuzmann E., Chisholm C., El-Sharif M., Bóbics L., Stichleutner S.
Open Chemistry
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2007
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vol. 5
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issue 4
931-950
EN
The corrosion properties of the passive layers formed on iron-nickel-chromium electrodeposits of Fe29Ni51Cr20 were investigated in 0.3 M borate solution at a‘ pH of 8.4. On the basis of measurements by cyclic voltammetry, chronopotentiometry and electrochemical impedance spectroscopy, a low passive dissolution/corrosion rate was identified for the electrodeposited Fe-Ni-Cr alloys due to the nature of the established corrosion layer. The stability of this passive layer was further enhanced after corrosion under oxidizing conditions. Mössbauer spectroscopic measurements confirmed the existence of a thin passive layer on the amorphous electrodeposits. [...]
2
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Sub-millivolt amplitude potential oscillations observed in the noise of hydrogen evolution on Ag and Cu microelectrodes

100%
Szenes I., Mészáros G., Lengyel B.
Open Chemistry
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2007
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vol. 5
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issue 2
466-478
EN
A strange effect was observed while using the method of quasi-simultaneous determination of electrochemical voltage noise and impedance to obtain information on the kinetics of the hydrogen evolution reaction on Ag and Cu microelectrodes. Beyond a certain polarizing current density we found microvolt-amplitude potential oscillations on both electrodes with a frequency in the 5 Hz–5 kHz range. The oscillations were observed in every single experiment with Ag and Cu, while no oscillatory behavior was observed during the control experiments with the Pt microelectrode. The presence of the oscillations indicates that the mechanism of hydrogen evolution is more complex compared to the original assumption. [...]
3
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Corrosion Inhibition of API 5L X52 Carbon Steel by 1-ethyl-3-methylimidazolium-methanesulphonate and 1-ethyl-3-methylimidazolium Acetate Ionic Liquids in Hydrochloric Acid

86%
Edet Ikpi M., Ebri Obono O., Edet Ikpi M., Ebri Obono O.
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vol. 65
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issue 1
4
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Electrochemical and Quantum Chemical Investigation on Adsorption of Nifedipine as Corrosion Inhibitor at API 5L X-52 Steel / HCl Acid Interface

86%
Ikpi M. E., Abeng F. E., Ikpi M. E., Abeng F. E.
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vol. 65
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issue 1
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