Two Dipodal Pyridin-Pyrazol Derivatives as Efficient Inhibitors of Mild Steel Corrosion in HCL Solution — Part I: Electrochemical Study

Cissé, M.; Zerga, B.; Kalai, Fouad El; Touhami, M. Ebn; Sfaira, M.; Taleb, M.; Hammouti, B.; Benchat, N.; Kadiri, Sghir El; Benjelloun, Adil Touimi

doi:10.1142/s0218625x11014783

Cited by 22 publications

(5 citation statements)

References 40 publications

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“…Tungstates are very efficient corrosion inhibitor in more realistic environments such as neutral or alkaline solutions containing chlorides, sulphates and some other ions [15,16]. Sodium tungstate has been extensively studied in the protection of iron as an environmentally-friendly anodic-type inorganic corrosion inhibitor [17][18][19][20] and is one of the effective corrosion inhibitors.…”

Section: Role Of Sodium Tungstate Inhibitor In Rebar Corrosionmentioning

confidence: 99%

Introduction of Inhibitors, Mechanism and Application for Protection of Steel Reinforcement Corrosion in Concrete

Kumar¹

2020

Corrosion [Working Title]

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The corrosion of steel reinforcement in concrete due to environmental factors has been studied through numerous approaches and the reduction of corrosion has been managed by various methods; however, among the protection techniques, the use of corrosion inhibitors has gained encouragement. In this chapter, nitrites and nitrates of sodium and calcium and sodium molybdates and sodium tungstates (oxyanions of group VI) were studied and have gained sufficient scientific coverage. However, their exact role of inhibition was studied by simple polarization technique. In this chapter, we compare the inhibitive efficiency of nitrites and nitrates of sodium and calcium and also that of molybdates and tungstates. The results, however, indicate that among nitrites and nitrates, the calcium salts are more efficient and molybdates and tungstates are comparable in their inhibitive efficacy.

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Section: Role Of Sodium Tungstate Inhibitor In Rebar Corrosionmentioning

confidence: 99%

Introduction of Inhibitors, Mechanism and Application for Protection of Steel Reinforcement Corrosion in Concrete

Kumar¹

2020

Corrosion [Working Title]

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“…In general, metals are having unique properties like opaque, lustrous, conductivity, malleable and ductile in nature and are readily forms metallic bonds with other metals and ionic bonds with non-metals [15,16]. The metals that have overlapping conduction bands and valence bands in their electronic structure.…”

Section: Chemistry Of Corrosionmentioning

confidence: 99%

Corrosion Inhibitors

Palanisamy¹

2019

Corrosion Inhibitors

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Corrosion is a natural process driven by energy consideration. Inhibition is a preventive measure against corrosive attack on metallic materials. Corrosion inhibitors have been frequently studied, since they offer simple solution for protection of metals against corrosion in aqueous environment. Mineral acids like hydrochloric and sulfuric acids are most widely used in pickling baths to remove the metal oxides formed on the surface. The multidisciplinary aspect of corrosion problems combined with the distributed responsibilities associated with such problems only increase the complexity of the subject. Inhibitors are used in industrial and commercial processes to minimize both the metal loss and acid consumption.

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“…The functional groups and structure of ROZ binds to the metal surface by electron transfer to form a coordinate type of linkage responsible for the strong bonding and effective inhibition. The zinc component of ROZ compound reacts with the products of the cathodic reaction (OH " ) to form insoluble Zn(OH) 2 which precipitates at cathodic sites on S41003 surfaces as the local environment becomes more alkaline due to the reduction reaction at these sites [19][20][21] . Zinc particles enhance the inhibition performance of ROZ through formation of a barrier between the acid solution and the alloy surface.…”

Section: Weight Loss and Open Circuit Potential Measurementmentioning

confidence: 99%

Inhibition Studies of the Synergistic Effect of Rosemary oil and Zinc Oxide on S41003 Ferritic Steel Corrosion in Dilute Sulphuric and Hydrochloric Acid Solutions

Loto¹

2018

Orient. J. Chem

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Corrosion inhibition studies of the synergistic properties of the combined admixture of Rosemary oil and zinc oxide (ROZ) on S41003 ferritic steel in 1M HCl and H 2 SO 4 acid were done with potentiodynamic polarization, weight loss analysis, open circuit potential measurement, optical microscopy and ATR-FTIR spectroscopy. Results showed the admixed compound to be highly effective with maximum inhibition efficiencies of 93.68% and 93.26%, 98.93% and 90.5% in HCl and H 2 SO 4 acid solutions from the electrochemical tests with dominant cathodic type inhibition characteristics. ROZ addition significantly shifts the corrosion potential values of S41003 to cathodic potentials from open circuit potential evaluation in both acid media signifying specific corrosion inhibition behavior without applied potential. Identified functional groups of alcohols, phenols, 1°, 2° amines, amides, carbonyls (general), esters, saturated aliphatic, carboxylic acids, ethers, aliphatic amines, alkenes, aromatics, alkyl halides and alkynes within ROZ compound aggregated completely on S41003 steel surface in HCl and partially in H 2 SO 4 solution. Thermodynamic calculations showed physisorption molecular interaction and adsorption according to Langmuir and Frumkin isotherm models. Optical microscopy images of ROZ inhibited and uninhibited S41003 samples slightly differ from each other due to pre-adsorbed corrosive anions on the steel surface before ROZ inhibition.

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Two Dipodal Pyridin-Pyrazol Derivatives as Efficient Inhibitors of Mild Steel Corrosion in HCL Solution — Part I: Electrochemical Study

Cited by 22 publications

References 40 publications

Introduction of Inhibitors, Mechanism and Application for Protection of Steel Reinforcement Corrosion in Concrete

Introduction of Inhibitors, Mechanism and Application for Protection of Steel Reinforcement Corrosion in Concrete

Corrosion Inhibitors

Inhibition Studies of the Synergistic Effect of Rosemary oil and Zinc Oxide on S41003 Ferritic Steel Corrosion in Dilute Sulphuric and Hydrochloric Acid Solutions

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