The effect of carboxylate compounds on controlling nitrite’s environmental side effects for carbon steel corrosion protection in the simulated concrete pore solution

Johari, Milad; Allahkaram, Saeed Reza; Teymouri, Farshad; Azamian, Iman; Shekarchi, Mohammad

doi:10.1016/j.conbuildmat.2021.125037

Cited by 18 publications

(7 citation statements)

References 46 publications

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“…This phenomenon can be attributed to the fact that with the passive layer becoming more stable, the inner layer starts growing into the second layer, which causes the transformation of Fe( iii ) to Fe( ii ). 61 The amount of O 2− also increased as it became double the initial amount after the addition of the inhibitor. Both the Fe 2+/ Fe 3+ and O 2− /OH − ratios increased in the presence of 0.05 M EDTA, which demonstrates the higher stability and better protective property of the passive layer.…”

Section: Resultsmentioning

confidence: 96%

Interfacial interaction study of EDTA with the defect structure of Fe_3−δO₄ passive film in an aggressive alkaline medium based on the lattice theory of point defects

et al. 2022

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Section: Resultsmentioning

confidence: 96%

Interfacial interaction study of EDTA with the defect structure of Fe_3−δO₄ passive film in an aggressive alkaline medium based on the lattice theory of point defects

et al. 2022

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“…Then low‐soluble MoO 2 OH formed and adsorbed on corrosive material surface 11 . NaNO 2 enhanced the protective layer by oxidizing Fe 2+ released from the anodic of corrosive material to produce γ‐Fe 2 O 3 and γ‐FeOOH (reactions and ) 40,41 . Polytungstate ions would generate in solution involving H + through reactions ()–() and reacted with the blank orbit d of Fe in corrosive material to produce complexes and adhered to corrosive material surface to restrain corrosion 13 .…”

Section: Resultsmentioning

confidence: 99%

“…11 NaNO 2 enhanced the protective layer by oxidizing Fe 2+ released from the anodic of corrosive material to produce γ-Fe 2 O 3 and γ-FeOOH (reactions 14 and 15). 40,41 Polytungstate ions would generate in solution involving H + through reactions ( 16)-( 19) and reacted with the blank orbit d of Fe in corrosive material to produce complexes and adhered to corrosive material surface to restrain corrosion. 13 The organic groups in composite inhibitor react with Fe ions to form chelation, which is adsorbed on the carbon steel.…”

Section: Inhibition Mechanismmentioning

confidence: 99%

Study on the corrosion inhibition performance of composite inhibitor on carbon steel in stone processing wastewater

Xiang,

Lu,

Zhu

et al. 2023

Asia-Pacific J Chem Eng

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The circular saw blade, which is mainly composed of carbon steel, is used to cut the stone. However, the carbon steel is easily corroded in stone processing wastewater, shortening its lifespan. In this study, a new composite inhibitor of sodium nitrite, sodium molybdate, sodium silicate, sodium tungstate, and sodium citrate was investigated firstly, and then, its inhibition efficiency for carbon steel in stone processing wastewater was explored using electrochemical measurements and weight loss measurements. The results showed that the composite inhibitor as a mixed‐type inhibitor displayed good inhibitory performance. Surface analysis including scanning electron microscope, atomic force microscope, X‐ray photoelectron spectroscopy analysis, and contact angle test further revealed the form of protection of the steel surface by composite corrosion inhibitors. The prepared composite inhibitor exhibited excellent corrosion resistance for carbon steel in stone processing wastewater, and it is believed that the composite inhibitor has certain application potential in industries.

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“…65 The S 2p in Figure 9d was fitted into three peaks located at 167.26, 169.15, and 170.53 eV, which might be due to the presence of sulfide species bonded on the carbon steel surface. 66 Figure 9e shows the N 1s spectrum with three peaks after deconvolution and fitting at 398.61, 400.37, and 401.56 eV, which were attributed to the unprotonated N atom (C−N) in the PETA/8ITU-1G inhibitor, 67 formation of the N−Fe bond, 68 and protonation (N + H) of nitrogen in the PETA/ 8ITU-1G inhibitor, 69 respectively Therefore, PETA/8ITU-1G formed a protective barrier film on the interface between carbon steel and soft water via coordination bonds between the nitrogen and sulfur heteroatoms and iron. This dense protective film strongly hindered corrosion of the carbon steel in soft water.…”

Section: Surface Characterizationmentioning

confidence: 99%

Isothiourea-Terminated Pentaerythritol Core Dendrimers as Highly Efficient Corrosion Inhibitors for Carbon Steel in Soft Water

Zhang,

Lin,

Cui

et al. 2024

ACS Appl. Eng. Mater.

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The potential of increasing use of soft water in a circulating cooling water system can solve scaling problem and improve water conservation efficiency; however, it will bring corrosion to equipment and pipelines. In this study, isothioureaterminated pentaerythritol core dendrimers with 0−2 generations (PETA/4ITU-0G, PETA/8ITU-1G, and PETA/16ITU-2G) were developed as phosphorus-free corrosion inhibitors for carbon steel in soft water. The corrosion inhibition performance and mechanism of these dendrimers were studied by weight loss analysis and electrochemical measurements, surface morphology analysis, and molecular dynamics (MD) simulations. The results show that the corrosion inhibition efficiency isand they can spontaneously adsorb on the carbon steel surface to form a protective film. The sulfur and nitrogen atoms in the terminal isothiourea of the dendritic polymers bound with iron through physical and chemical processes. The performance of isothiourea-terminated pentaerythritol core dendrimers was better than that of isothiourea-terminated pentitol core dendrimers. PETA/8ITU-1G was the most cost-effective inhibitor and showed a better inhibition performance than PETA/4ITU-0G owing to its numerous terminal isothiourea groups in the molecular structure, which helps form a stronger protective film. The central core and number of terminated groups of dendrimers both play a role in the corrosion inhibition performance.

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The effect of carboxylate compounds on controlling nitrite’s environmental side effects for carbon steel corrosion protection in the simulated concrete pore solution

Cited by 18 publications

References 46 publications

Interfacial interaction study of EDTA with the defect structure of Fe_3−δO₄ passive film in an aggressive alkaline medium based on the lattice theory of point defects

Interfacial interaction study of EDTA with the defect structure of Fe_3−δO₄ passive film in an aggressive alkaline medium based on the lattice theory of point defects

Study on the corrosion inhibition performance of composite inhibitor on carbon steel in stone processing wastewater

Isothiourea-Terminated Pentaerythritol Core Dendrimers as Highly Efficient Corrosion Inhibitors for Carbon Steel in Soft Water

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The effect of carboxylate compounds on controlling nitrite’s environmental side effects for carbon steel corrosion protection in the simulated concrete pore solution

Cited by 18 publications

References 46 publications

Interfacial interaction study of EDTA with the defect structure of Fe3−δO4 passive film in an aggressive alkaline medium based on the lattice theory of point defects

Interfacial interaction study of EDTA with the defect structure of Fe3−δO4 passive film in an aggressive alkaline medium based on the lattice theory of point defects

Study on the corrosion inhibition performance of composite inhibitor on carbon steel in stone processing wastewater

Isothiourea-Terminated Pentaerythritol Core Dendrimers as Highly Efficient Corrosion Inhibitors for Carbon Steel in Soft Water

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Product

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Interfacial interaction study of EDTA with the defect structure of Fe_3−δO₄ passive film in an aggressive alkaline medium based on the lattice theory of point defects

Interfacial interaction study of EDTA with the defect structure of Fe_3−δO₄ passive film in an aggressive alkaline medium based on the lattice theory of point defects