Electrochemical and eclipsometric study of iron corrosion inhibition in sodium sulphate solutions containing aliphatic acids

Mrowczynski, G.; Szklarska‐Śmiałowska, Z.

doi:10.1007/bf00616090

Cited by 11 publications

(3 citation statements)

References 3 publications

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“…This increases the stability and protectivity of the film. The protective effect of carboxylates for corrosion of mild steel has been previously reported (Cartledge, 1960;Ghareba & Omanovic, 2016;Mrowczynski & Szklarska-Smialowska, 1979;Rammelt et al, 2011;Reinhard et al, 1992) and it was suggested that the protective film consists mainly of iron oxides with inclusions of Fe 2+ -carboxylate complexes.…”

Section: The Inhibition Processmentioning

confidence: 69%

“…The ability of straight chain aliphatic mono-and dicarboxylic acids to inhibit carbon steel corrosion has been widely investigated. Mrowczenski and Smialowska (Mrowczynski & Szklarska-Smialowska, 1979) studied the corrosion behavior of iron in sulfate solutions in the presence of monocarboxylic acids with 6-10 carbon atoms in the molecule. Their results showed that the corrosion inhibition efficiency increases with increasing the number of carbon atoms in the molecules provided that the concentration exceeds a certain critical value.…”

Section: Introductionmentioning

confidence: 99%

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Synergistic effect of different Zn salts with sodium octanoate on the corrosion inhibition of carbon steel in cooling water

Mohamed

Ibrahim

El-Bedawy

et al. 2020

Journal of Radiation Research and Applied Sciences

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The corrosion inhibition of carbon steel was investigated in cooling water containing sodium octanoate (Oct), Zn-salts or blends of Oct-Zn salts. The weight loss and the potentiodynamic polarization methods were applied. ZnCl 2 , ZnSO 4 and Zn (NO 3 ) 2 were studied. The results showed that Oct-Zn salt blends exhibited higher corrosion inhibition efficiency than either Oct or Zn Salts added separately to the cooling water suggesting a synergistic interaction between Oct and the Zn-salts. The polarization results revealed that these blends act as mixed-type inhibitors with three dominant anodic inhibition. The inhibition efficiency of Zn-salts in the absence and presence of Oct was found to decrease in the order Zn (NO 3 ) 2 > ZnSO 4 > ZnCl 2 . Optical microscopy and infrared spectroscopy were used to study the protective action of the films formed on carbon steel in Oct-Zn salt blends. The role of Zn anions and the synergism behavior were discussed.

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Section: The Inhibition Processmentioning

confidence: 69%

Section: Introductionmentioning

confidence: 99%

Synergistic effect of different Zn salts with sodium octanoate on the corrosion inhibition of carbon steel in cooling water

Mohamed

Ibrahim

El-Bedawy

et al. 2020

Journal of Radiation Research and Applied Sciences

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“…Straight chain aliphatic carboxylates have also been reported by various authors as effective inhibitors. Mrowczynski and Szklaeska-Smialowska [11] reported the electrochemical behavior of iron in sulphate solutions in the presence of monocarboxylic acids with 6-10 carbon atoms in the molecule, showing that efficiency increases with increasing length of the hydrocarbon chain, provided that the concentration exceeds a critical value; they attributed the reduction in corrosion rate of iron to a synergistic action of these acids and dissolved oxygen. Reinhard and Rammelt [12][13][14] also investigated the passivation effect of some carboxylates, including straight chain mono-and dicarboxylates; they reported that dissolved oxygen forms a passive oxide film on iron and steel in the presence of the carboxylate above a critical minimum concentration.…”

Section: Introductionmentioning

confidence: 99%

The Inhibition Effect of Sodium Glutarate towards Carbon Steel Corrosion in Neutral Aqueous Solutions

Chan-Rosado

Pech‐Canul

2016

International Journal of Corrosion

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The inhibition effect of sodium glutarate towards corrosion of carbon steel in neutral 0.02 M NaCl solution was investigated with potentiodynamic polarization and electrochemical impedance measurements. Results of electrochemical measurements revealed a poor inhibitive action for low concentrations (1 mM and 5 mM) and a significant improvement in efficiency for concentrations of 32 mM or higher. The protective film exhibited excellent stability in the temperature range 22°C–55°C. Full chemical passivation was accomplished and analysis of the impedance spectra for the high concentrations of glutarate was consistent with the inhibition mechanism which assumes that the carboxylates support the passivation of carbon steel in aerated solutions by plugging the defect sites and that the passivation process is enhanced by adsorption of the carboxylates on the oxide-covered surface. Such mechanism was confirmed by the XPS analysis.

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Growth of anodic films on iron and stainless steel in the presence of some organic inhibitors

Spinelli

Fratesi

Roventi

1983

Materials & Corrosion

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Da von den Korrosionserscheinungen nur geringfugige Anteile des Rohnnaterials betroffen sind, ist auch eine deutliche Veranderung der mechanischen Eigenschaften iiber die thermische Alterung hinaus nicht wahrscheinlich. Diese Aussage wird in den langzeitigen Zeitstandversuchen im Kreislauf Crevona bestatigt, die in einem nachfolgenden Versuchsprogramrn durchgefiihrt werden.Die Nachuntersuchungen haben neben vielen detaillierten Erscheinungen vor allem gezeigt, daB die hier verwendeten stabilisierten austenitischen Stahle X 8 CrNiNb 1613 und X 10 CrNiTi 189 fur den Anlagenbau mit Natrium f i r lange Einsatzzeiten bis zu Temperaturen von 973 K anwendbar sind.Sie sind damit in gleicher Weise fiir die Anwendung mit Natrium qualifiziert wie die weltweit bevorzugten Stahle AISI 304 und 316.Wir bedanken uns auch an dieser Stelle fiir die Beitrage von Frau Z . Peric und den Herren E. Nold, D. Schlindwein und G. Wittig zu dieser Arbeit.Growth of anodic films on iron and stainless steel 161 ~~- SchrifttumEllipsometry has been used to study the influence of Benzylamine, Benzotriazole and Hexamethylenetetramine on the growth of anodic oxides on iron and on AISI 304 stainless steel in borate-buffer solutions.On iron, a limitation of the growth-rate has been observed for these substances all over the passive potential range. On AISI 304 steel, when the electrode potential exceeds 400 mV (SCE), an increase of the anodic oxide growth-rate was found in the presence of the organic substances. Adsorption on the oxide film, according to the interpretation given by Pearson, is discussed.Mit Hilfe der Ellipsometrie wurde der EinfluB von Benzylamin, Benzotriazol und Hexamethylentetrarnin auf die Bildung von anodischen Oxiden auf Eisen und dem nichtrostendcn Stahl AlSl 304 in Boratpufferlosung untersucht. Auf Eisen fiihren demnach alle drei Substanzen zu einer Begrenzung der Wachstumsgeschwindigkeit im gesamten Bereich der passiven Potentiale. Auf dem Stahl 304 hingegen bewirken die Zusatzstoffe bei Potentialen iiber 400 mV (S E) zu einer Beschleunigung der Wachstumsgeschwindigkeit der anodischen Oxide. Der Wachstumsmechanismus wird entsprechend der Deutung von Pearson unter Annahme von Adsorptionsvorgangen am Oxidfilm diskutiert.

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Electrochemical and eclipsometric study of iron corrosion inhibition in sodium sulphate solutions containing aliphatic acids

Cited by 11 publications

References 3 publications

Synergistic effect of different Zn salts with sodium octanoate on the corrosion inhibition of carbon steel in cooling water

Synergistic effect of different Zn salts with sodium octanoate on the corrosion inhibition of carbon steel in cooling water

The Inhibition Effect of Sodium Glutarate towards Carbon Steel Corrosion in Neutral Aqueous Solutions

Growth of anodic films on iron and stainless steel in the presence of some organic inhibitors

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