Corrosion inhibitors (review)

Kozlova, L.; Сибилева, С В; Chesnokov, D.V.; Kutyrev, A.E.

doi:10.18577/2071-9140-2015-0-2-67-75

Cited by 11 publications

(3 citation statements)

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“…In the world practice of protecting metals from corrosion, the most expedient from an economic and technological point of view for systems in operation, in particular, steel water pipes, is considered to be a method of protection using corrosion inhibitors, as which phosphate-, silicate-, chromate-, nitrite-, boroncontaining compounds are applied from inorganic substances [4 -7]. Nevertheless, despite the high efficiency, the use of chromates and nitrites does not find practical application due to their high toxicity [6]. The use of silicates is possible only for waters with low mineralization.…”

Section: Introductionmentioning

confidence: 99%

Corrosion Behavior of Mild Steel in Sodium Sulfate Solution in Presence of Phosphates of Different Composition

Raimbekova,

Kapralova,

Popova

et al. 2024

JCTM

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Corrosion of mild steel in sodium sulfate solutions (1000 mg SO42- L-1) in the presence of various phosphateinhibitors was studied gravimetrically. Studies were performed under static conditions at room temperature. The known sodium polyphosphate inhibitor has been found to have low efficacy under these conditions. The inhibitor efficiency of its does not exceed 30.5 % at a concentration of 100 mg P2O5 L-1. It has been shown that a more effective inhibitor is calcium-manganese polyphosphate (Са, Mn)(PO3)2 obtained on the basis of manganese ore enrichment wastes of the Zhayrem deposit. The inhibitor efficiency of its already at a concentration of 20 mgP2O5 L-1 is 47.3 %. At a concentration of 100 mgP2O5 L-1, the inhibitor efficiency (Са, Mn)(PO3)2 is 96.2 %. Electrochemical tests confirmed the results of the gravimetric study. Infrared spectroscopic analysis showed that phosphate protective coatings were formed on the steel surface in solutions of sodium sulfate with additives of calcium-manganese polyphosphate.

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Section: Introductionmentioning

confidence: 99%

Corrosion Behavior of Mild Steel in Sodium Sulfate Solution in Presence of Phosphates of Different Composition

Raimbekova,

Kapralova,

Popova

et al. 2024

JCTM

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“…Many domestic [1][2][3][4] and foreign [5][6][7][8][9][10][11] authors considered the problems of corrosion protection. Corrosion processes can occur during storage and transportation of water with different applications [12,13], oil transportation processes [14], technological processes in hightemperature conditions (heat exchangers, boilers etc.)…”

Section: Introductionmentioning

confidence: 99%

“…There are many researches [1][2][3][4][5][6][7][8][9][10][11] devoted to corrosion protection, but essentially less attention was paid to the problems of minimization of corrosion activity during material manufacture or studying corrosion safety aspects of chemical and physical properties of materials.…”

Section: Introductionmentioning

confidence: 99%

Study of electrochemical properties of austenitic chromium-nickel steel 12Kh18N10T in concentrated sulfuric acid

Zolotukhin,

Kurbatov,

Grunskiy

et al. 2023

cisisr

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Considerable attention has always been paid to the issues of protection against chemical corrosion of technological equipment operating in aggressive environments, and even now this issue does not lose its relevance. Recovery of absorption heat is an integral part of the process of minimizing energy costs, and that is why special requirements are imposed on the quality and service life of heat exchange units. Within the framework of the work done, the electrochemical behavior of austenitic nickel-containing steel grade 12Kh18N10T (equivalent of AISI 304), used for the manufacture of process equipment for sulfuric acid production processes by the double contact -double absorption method, was studied. For the studied sample of austenitic nickel-containing steel, anodic potentiodynamic polarization curves were obtained, on which two weakly manifested passivation regions were noted. It has been established that the predominant contribution to metal losses is made by chemical corrosion, while during the operation of steel structures, iron is leached from the surface layer with formation of a protective nanofilm. Thickness of the resulting protective film is 35 nm or more, with the exposure time of steel in hot sulfuric acid for 200 hours. Increasing of the exposure time does not significantly affect the thickness or composition of the protective coating. Using X-ray phase analysis, it was established that the protective film is based on nickel and chromium compounds. The corrosion rate of equipment in the presence of a protective film does not exceed 0.1 mm/year, there are no pitting and intergranular corrosion. The data obtained will allow not only predicting and planning repair and maintenance work, but also organizing a corrosion prevention system without introducing additional reagents into the system.

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Mathematical modeling of selecting optimal conditions for obtaining acid corrosion inhibitors

Aminova¹,

Ishmukhametova²

2021

AIP Conference Proceedings

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Corrosion inhibitors (review)

Cited by 11 publications

References 0 publications

Corrosion Behavior of Mild Steel in Sodium Sulfate Solution in Presence of Phosphates of Different Composition

Corrosion Behavior of Mild Steel in Sodium Sulfate Solution in Presence of Phosphates of Different Composition

Study of electrochemical properties of austenitic chromium-nickel steel 12Kh18N10T in concentrated sulfuric acid

Mathematical modeling of selecting optimal conditions for obtaining acid corrosion inhibitors

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