2007
DOI: 10.4152/pea.200704453
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Pitting Corrosion Inhibition of Some Copper Alloys in Neutral Solutions by Straight Chain Carboxylates

Abstract: Electrochemical methods were used to investigate the abilities of the homologous straight chain monocarboxylates (C n H 2n+1 COO -,n=1-13) to inhibit the pitting corrosion of two types of copper alloys in aerated, saline and near neutral aqueous solutions. The copper alloys were alloy (I) (Cu + 4.47% Fe) and alloy (II) (Cu + 10.67% Al + 5.02% Fe). It was found that these were susceptible to pitting corrosion in NaCl solutions, with increase of Cl -ions concentration. Alloy (II) was more susceptible to pitting … Show more

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Cited by 2 publications
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“…Furthermore, the formation of the hydrogen bond and the van der Waals interactions between the hydrophobic groups increase with an increase of the inhibitor concentration. It, therefore, leads to better protection of the metal surface and increased the inhibition efficiency of the nonionic surfactants (29,30).…”
Section: Corrosion Inhibition Mechanismmentioning
confidence: 99%
“…Furthermore, the formation of the hydrogen bond and the van der Waals interactions between the hydrophobic groups increase with an increase of the inhibitor concentration. It, therefore, leads to better protection of the metal surface and increased the inhibition efficiency of the nonionic surfactants (29,30).…”
Section: Corrosion Inhibition Mechanismmentioning
confidence: 99%
“…Increase in inhibition activities due to increase in inhibitor concentrations may indicate that a secondary molecular layer can occur (bilayer) via H-bonds and Van der Waals forces. [18][19][20] At low inhibitor concentrations, probably both ends of the molecule interact with the metal surface to provide protection as shown in Figure 3. The horizontal orientation of inhibitor molecules on the surface of the metal prevents the growth of the secondary molecular layer.…”
Section: Scheme 1 Synthesis Of Benzimidazole Derivatives 2a-ementioning
confidence: 94%