The synergistic effect of Halide ions on the corrosion inhibition of zinc by n-decylamine

Rudresh, H. B.; Mayanna, S. M.

doi:10.1016/0010-938x(79)90035-0

Cited by 27 publications

(10 citation statements)

References 14 publications

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“…Gomma48 and Ebenso22 have shown that a cooperative effect results on addition of a halide salt to sulphuric acid solution containing an organic compound, which inhibits the corrosion of iron. Halides have been reported to inhibit the corrosion of some metals in strong acids and this effect depends on the ionic size through the electrostatic field set up by the negative charge of the anion on adsorption sites 22, 49–54. A similar trend has been observed in this study involving alkaline medium.…”

Section: Resultssupporting

confidence: 86%

Synergistic effect of halide ions and polyethylene glycol on the corrosion inhibition of aluminium in alkaline medium

Umoren

Ebenso

Ogbobe

2009

J of Applied Polymer Sci

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ABSTRACT:The corrosion inhibition of aluminium in alkaline medium was studied at 30 and 40 C in the presence of polyethylene glycol (PEG) using gravimetric (weight loss) and thermometric techniques. The effect of halides (KCl, KBr, and KI) on the inhibitory action of PEG was also studied. It was found that PEG acted as inhibitor for aluminium corrosion in the alkaline medium. Inhibition efficiency increased with increasing inhibitor concentration. An increase in temperature led to increase in both the corrosion rate and inhibition efficiency in the absence and presence of inhibitor and halides. Phenomenon of chemical adsorption mechanism is proposed from the values of E a , Q ads , and DG o ads obtained. The adsorption of PEG on the surface of aluminium was found to obey Flory-Huggins and Temkin adsorption isotherms. The synergism parameter, S 1 evaluated was found to be greater than unity indicating that the enhanced inhibition efficiency caused by the addition of halides is synergistic in nature. The inhibition efficiency, surface coverage and synergism parameter increased in the order;showing that a joint adsorption of PEG and halide ions on aluminium plays a significant role in the adsorption process.

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Section: Resultssupporting

confidence: 86%

Synergistic effect of halide ions and polyethylene glycol on the corrosion inhibition of aluminium in alkaline medium

Umoren

Ebenso

Ogbobe

2009

J of Applied Polymer Sci

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“…The role of inhibitors in bringing changes in dezincification characterstics is discussed below based on the models proposed for the synergistic effects of organic molecules and the anions. [29][30][31] (a) The presence of the inhibitors in traces can affect the overall dissolution rate due to their adsorption at the interface which may not effect the extent of dezincification-- Fig. 9, Model I.…”

Section: Discussionmentioning

confidence: 99%

The dezincification of brass and its inhibition in acidic chloride and sulphate solutions

Dinnappa¹,

Mayanna

1987

Corrosion Science

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“…Many different organic compounds have been investigated as potential corrosion inhibitors for zinc substrates. They are, for example, polyethylene glycol, pyrrole derived, organic onium compounds, 8‐hydroxyquinoline, amines, salicylideneaniline, benzotriazoles, phytic acid, surfactants, sulfonates, and carboxylates . Among them, the latter are investigated mainly in the form of salts of weak acids thanks to their relatively good solubility in water and inhibition efficiency.…”

Section: Introductionmentioning

confidence: 99%

Sebacic acid as corrosion inhibitor for hot‐dip galvanized (HDG) steel in 0.1 M NaCl

Fedel

Poelman

Olivier

et al. 2019

Surface & Interface Analysis

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The potential of sebacic acid as a corrosion inhibitor for hot-dip galvanized steel in 0.1 M NaCl solution has been investigated. Different concentrations of the organic acid have been tested in order to understand the inhibition mechanism of the compound. The electrochemical test revealed a competitive mechanism between the dissolution of the metal in the acidified solution and the inhibition provided by the dicarboxylic species. The formation of a whitish layer consisting of zinc carboxylates and corrosion products was proved by means of scanning electron microscopy (SEM) investigation combined with Fourier transform infrared (FT-IR) analysis. A bidentate bridging coordination between the Zn(II) and the carboxylic species is suggested.

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The synergistic effect of Halide ions on the corrosion inhibition of zinc by n-decylamine

Cited by 27 publications

References 14 publications

Synergistic effect of halide ions and polyethylene glycol on the corrosion inhibition of aluminium in alkaline medium

Synergistic effect of halide ions and polyethylene glycol on the corrosion inhibition of aluminium in alkaline medium

The dezincification of brass and its inhibition in acidic chloride and sulphate solutions

Sebacic acid as corrosion inhibitor for hot‐dip galvanized (HDG) steel in 0.1 M NaCl

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