Influence of the Extracts of Plant Raw Materials on the Corrosion-Fatigue Fracture of Steels in Fresh Water

Slobodyan, Z. V.; Mahlatyuk, L. A.; Khaburs’kyi, Ya. M.; Kupovych, R. B.

doi:10.1007/s11003-016-9935-z

Cited by 3 publications

(1 citation statement)

References 5 publications

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“…Українські дослідники [8][9][10] довели можливість рекомендувати інгібітор на основі екстракту дуба не лише для гальмування корозійних процесів, а й корозійновтомного руйнування. Виділені екстракти з відходів переробки деревини та синтезовані на їхній основі синергічні композиції -ефективні інгібітори корозії середньовуглецевих сталей у нейтральних і кислих середовищах.…”

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Inhibitor Efficacy and Composition of Oak Bar Extract

Hulai¹,

Shemet²,

Zhilko³

et al. 2020

Proc. Shevchenko Sci. Soc. Chem. Sci.

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Regional and international researchers have proven that natural products, plants and their extracts can be used to reduce the corrosion rate. Such studies are relevant because natural inhibitors are obtained from renewable sources, therefore they are environmentally friendly. Ukrainian scientists have investigated the inhibition effect of oak bark extracts, but no such studies have been performed on cast iron. What is more, it has not been established which substances cause this effect. The purpose of the study is to determine the corrosion resistance of 08kp steel and gray cast iron SCh-15 (common structural materials of food industry equipment) in acidic and neutral environments in presence of oak bark extracts; to define the qualitative composition of the extract. Structure of cast iron and steel samples was studied on a metallographic microscope MMP-14C. The corrosion rate of metals was evaluated by weight. To determine the corrosion potential, we used a setting of a cathode voltmeter, electrodes (test and saturated chloride-silver), an intermediate vessel with a saturated KCl solution and electrolytic keys filled with the test electrolyte and saturated KCl solution (for the comparison electrode). The extract was analyzed on a Shimadzu GCMS-QP2020 gas chromatograph with mass-selective detection. Using weight method, the inhibition effect of oak shavings alcohol extract was proved in acidic and neutral corrosive environments. Under the influence of oak bark extract (5%), the stationary potential of steel 08kp has shifted: in 3% NaCl solution (oxygen depolarization) – towards more negative values; in 5% HCl solution (hydrogen depolarization) – to less negative values. Gas chromatography with mass-selective detection (GC/MS) revealed that the active substance in the extract is a mixture of natural tannins – polyphenolic compounds with a molecular weight of 500 to 3000. The inhibition effect of natural tannins is probably enhanced by siloxane compounds.

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Section: вступunclassified

Inhibitor Efficacy and Composition of Oak Bar Extract

Hulai¹,

Shemet²,

Zhilko³

et al. 2020

Proc. Shevchenko Sci. Soc. Chem. Sci.

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Corrosion Inhibition of Aluminum Alloy by a Composition of Guar Gum and Tartrate

et al. 2022

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Study on the Synergistic Effect of Iodide Ion with the Extract of Artemisia Halodendron on the Corrosion Inhibition

Cang¹

2017

International Journal of Electrochemical Science

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The synergistic inhibition effect of iodide ion with the extracts of Artemisia Halodendron was studied by electrochemical potentiodynamic polarization methods. It was found that the inhibition efficiency increased with increasing the iodide ion concentration when fixed the concentration of the extract. But increased first and decreased then with increasing concentration of the extract when fixed the iodide ion concentration. The synergism parameters were evaluated from the inhibition efficiency values. SEM and EDX study confirmed the corrosion inhibition of the extract and iodide ion on the mild steel surface in HCl solution.

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Influence of the Extracts of Plant Raw Materials on the Corrosion-Fatigue Fracture of Steels in Fresh Water

Cited by 3 publications

References 5 publications

Inhibitor Efficacy and Composition of Oak Bar Extract

Inhibitor Efficacy and Composition of Oak Bar Extract

Corrosion Inhibition of Aluminum Alloy by a Composition of Guar Gum and Tartrate

Study on the Synergistic Effect of Iodide Ion with the Extract of Artemisia Halodendron on the Corrosion Inhibition

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