The influence of flow rate on corrosion of mild steel in hot tap water

Vasyliev, Georgii

doi:10.1016/j.corsci.2015.05.007

Cited by 49 publications

(27 citation statements)

References 22 publications

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“…Electrochemical technique of chronoamperometry is a fast and convenient approach to study scaling processes [1,2]. e working electrode is polarized at a constant negative potential of − 1.1 V/SSCE (saturated silver chloride electrode E � 0.2 V/NHE).…”

Section: Chronoamperometrymentioning

confidence: 99%

“…Utilization of natural water for both domestic and industrial purposes is related with scale and corrosion problems. Water containing dissolved gases such as O 2 and CO 2 can cause corrosion of metal equipment [1,2], and the presence of Ca 2+ and Mg 2+ cations leads to scaling [3,4], especially when water is used in heat exchange processes. As a result of corrosion, water quality deteriorates and metal equipment requires repairs and replacement more often.…”

Section: Introductionmentioning

confidence: 99%

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Raphanus sativus L. Extract as a Scale and Corrosion Inhibitor for Mild Steel in Tap Water

Vasyliev

Vorobyova

Zhuk

2020

Journal of Chemistry

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The Raphanus sativus L. ethanol extract was prepared by radish cake maceration in ethanol end tested as a scale and corrosion inhibitor of mild steel in tap water. Antiscalant efficiency was tested with electrochemical and thermal scaling techniques, and changes in hardness content were determined titrimetrically. No deposits were found on the metal surface at the extract concentration of 10 mL/L in chronoamperometry test, and scaling suppression was established 5 times in thermal scaling conditions. The linear polarization resistance technique was used to determine corrosion rate. Inhibition efficiency was found to be 75% in thermal scaling conditions. The formation of the surface film was responsible for both scaling and corrosion suppression on mild steel surface as was established with FT-IR spectroscopy and SEM. The surface film was found to contain polymerization products of isothiocyanates.

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Section: Chronoamperometrymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Raphanus sativus L. Extract as a Scale and Corrosion Inhibitor for Mild Steel in Tap Water

Vasyliev

Vorobyova

Zhuk

2020

Journal of Chemistry

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“…The concept of improving corrosion resistance of steel by the formation of a surface layer that efficiently blocks corrosive components from surrounding medium, is self-explanatory, and has also previously been proposed in for steel corrosion in hot tapwater. 35,36 The brown-orange colour of rust in the system without inhibitor indicates that its main component is lepidocrocite (γ-FeOOH). 37 On the inhibitor protected electrode, a dark violet layer is visible, proving formation of ferric tannate.…”

Section: Measurements At the Lpr Probementioning

confidence: 99%

A Novel Environmentally Friendly Synergistic Mixture for Steel Corrosion Inhibition in 0.51 M NaCl

Božović¹,

Martinez²,

Grudić³

2019

ACSi

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The ubiquitous use of plain and low-alloy steels in neutral, chloride bearing environments presents an everyday challenge for corrosion protection professionals. This paper explores the possibility of developing a non-toxic and environmentally friendly synergistic inhibitor mixture made of propolis, tannin, sodium benzoate, PEG400 and starch that could be applied into the solution to induce the formation of a persistent protective layer on steel. Components of the mixture were chosen based on the references giving their characteristics relevant to their possible action in the solution and/or at the surface of the steel. The efficiency of the protective layer formed under the influence of the inhibitor mixture, and then measured by the LPR probe in the inhibitor-free solution, was the lowest under quiescent conditions (75%) and the highest (95%) under flow conditions. Both, LPR and EIS data indicate that the inhibitor modified layer presents a barrier for diffusion of oxygen that acts as a primary corrosion reaction depolarizer in the investigated neutral chloride solution. The demonstrated persistence of the inhibitor modified layer is of primary interest as it gives possibility batch application.

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“…The stability of a metal when exposed to the environment depends on a multitude of factors that may vary greatly with the concentration of Cland SO 4 2of that environment. Mild steel is very popular and widely used metallic materials, and the corrosion of this steel is a serious problem in water supply, storage tanks and circulating water pipes etc., and the corrosion behavior have been studied by many researchers [1][2][3]. The corrosion rate of mild steel can be accelerated by the presence of the compound that may contains Cland SO 4 2- [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Effects of metal cations on mild steel corrosion in 10 mM Cl− aqueous solution

2018

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The influences of metal cations on the corrosion of mild steel in 10 mM Claqueous solutions were investigated by electrochemical techniques and immersion tests. Immersion tests and electrochemical impedance spectroscopy (EIS) results showed that Zn 2+ has a significant effect on corrosion inhibition. Surface morphological inspection also showed the smooth surface of specimen immersed in Zn 2+ containing solution. Analysis of X-ray photoelectron spectroscopy showed that Zn 2+ was incorporated in the oxide films by making a strong bond. It is supposed that Zn 2+ forms a very effective shielding film which can inhibit the electrochemical reactions, and consequently lowers the corrosion rate.

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The influence of flow rate on corrosion of mild steel in hot tap water

Cited by 49 publications

References 22 publications

Raphanus sativus L. Extract as a Scale and Corrosion Inhibitor for Mild Steel in Tap Water

Raphanus sativus L. Extract as a Scale and Corrosion Inhibitor for Mild Steel in Tap Water

A Novel Environmentally Friendly Synergistic Mixture for Steel Corrosion Inhibition in 0.51 M NaCl

Effects of metal cations on mild steel corrosion in 10 mM Cl− aqueous solution

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