Stearate as a green corrosion inhibitor of magnesium alloy ZE41 in sulfate medium

Dindodi, Nandini; Shetty, A. Nityananda

doi:10.1016/j.arabjc.2014.11.028

Cited by 16 publications

(13 citation statements)

References 55 publications

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“…However, due to the long molecular chain of PS, it is easy to entangle, so the inhibition effect of PS is poor with the increase in content. As shown in the SEM micrographs ( Figure 5 ), these high polymers can adsorb on the surface of Al alloy particles to produce a tight protective film that blocks the OH − in water from Al 3+ ions, as has been noted by previous research works [ 14 , 33 ]. The reaction mechanism is illustrated in Figure 9 .…”

Section: Resultssupporting

confidence: 52%

Inerting Waste Al Alloy Dust with Natural High Polymers: Sustainability of Industrial Waste

Liu

Yin²,

et al. 2022

Materials

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A large amount of waste dust will be produced in the process of metal grinding, resulting in a waste of resources and environmental pollution. Therefore, we present a new method of inerting waste aluminum (Al) alloy dust for recycling purposes. Three natural high polymers—starch, pectin, and hydroxypropyl cellulose—were selected to inert waste metal dust in order to prevent the alloy from hydrolyzing and keep the dust pure enough for reuse. The particles of the Al base alloy before and after dust reaction were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), and Fourier transform infra-red (FTIR), and the relevant reaction mechanism was clarified. The hydrogen evolution test indicated that, across the temperature interval of 313–333 K, 0.75 wt% pectin inerted hydrogen evolution most efficiently (90.125%). XRD analysis indicated that the inerted product is composed of Al monomer and Al3Mg2, with no detectable content of Al hydroxide. The purity of the Al alloy dust was preserved. SEM and FTIR analyses indicated that the -OH, -COOH, and -COOCH3 functional groups in the high polymer participated in the coordination reaction by adsorbing on the surface of the waste Al alloy particles to produce a protective film, which conforms to Langmuir’s adsorption model. Verification of the inerted Al alloy dust in industrial production confirmed the possibility of reusing waste Al alloy dust. This study provides a simple and effective method for recycling waste Al alloy dust.

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Section: Resultssupporting

confidence: 52%

Inerting Waste Al Alloy Dust with Natural High Polymers: Sustainability of Industrial Waste

Liu

Yin²,

et al. 2022

Materials

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“…The use of corrosion inhibitors is a quickly growing field in the protection of magnesium and its alloys [ 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 ]. Corrosion inhibitors can be used alone [ 19 , 20 , 21 , 22 , 23 ] or as additives that enhance the anticorrosive properties of paint coatings, conversion coatings, and other types of coatings [ 24 , 25 , 26 , 27 , 28 ].…”

Section: Introductionmentioning

confidence: 99%

Structuring of Surface Films Formed on Magnesium in Hot Chlorobenzotriazole Vapors

Goncharova

Luchkin²,

Senchikhin³

et al. 2022

Materials

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Chamberprotection of metals from atmospheric corrosion is a variety of vapor-phase inhibition. It is based on the effect of adsorption films formed in the vapors of low-volatile corrosion inhibitors at elevated temperatures. The paper analyzes the specific features of the chamber protection of a magnesium alloy with chlorobenzotriazole. It has been found that the protective properties of surface films formed in hot vapors of this compound increase upon exposure of the metal to air. The processes of structuring of protective films that occur in this case have been studied by a set of corrosion, electrochemical and physical methods. It has been shown that chamber treatment of the alloy is accompanied by chlorobenzotriazole adsorption and uniform thickening of the surface oxide-hydroxide layer. In this case, the corrosion processes slow down by a factor of up to 10. Prolonged exposure of the samples in air after the chamber treatment results in additional oxidation of magnesium and hydroxylation of the oxide. However, the oxide-hydroxide layer does not grow on the entire surface, but as separate islets. Such a change in the structure of the surface films results in an additional 10-fold increase in the corrosion resistance of the magnesium alloy.

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“…Different inhibitors that contain N have been studied by scholars concerning the corrosion inhibitory features for metals in acid media 20 . Organic inhibitors that contain N atom act strongly for metals in acid solutions 5,[21][22][23][24][25] . Different studies have investigated the effects of plant extracts as green inhibitors for corrosion because they do not pollute the environment and are eco-friendly, inexpensive, and easy to access from nature.…”

Section: Introductionmentioning

confidence: 99%

Experimental and computational study of Trachyspermum leaves extract as a green inhibitor for corrosion inhibition of mild steel in HCl

Jafari

Ahmadi

Razavi

2022

Preprint

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The present study aims at investigating the impacts of the extract of Trachyspermum leaves on the mild steel corrosion in 0.1M hydrochloric acid (HCl), while highlighting its inhibitory mechanisms. The effects of mild steel corrosion in solutions of HCl were examined using the gravimetric and galvanostatic polarization techniques, along with EIS analyses. According to the EIS data, the highest coating undamaged index (83 %) after 100 h of immersion. According to the results, the maximum inhibitory effectiveness corresponding to the minimum corrosion rate could be observed at the highest desirable level of inhibitor concentration equal to 100 ppm, while the corrosion rate decreases with an increase in the extract concentration. The absorption examinations indicated the best description of the metal surface interaction by Langmuir isotherm with -31.85Kjmol-1, while obtaining the best exposure time for the Trachyspermum leaves extract adsorption into the surface of the metal in different concentrations. SEM, AFM, IR, and XRD showed the good coverage of Trachyspermum on the surface of mild steel. Based on the results of polarization, the inhibitors can play the role of a mixed inhibitor, also confirmed by the computational data.

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Stearate as a green corrosion inhibitor of magnesium alloy ZE41 in sulfate medium

Cited by 16 publications

References 55 publications

Inerting Waste Al Alloy Dust with Natural High Polymers: Sustainability of Industrial Waste

Inerting Waste Al Alloy Dust with Natural High Polymers: Sustainability of Industrial Waste

Structuring of Surface Films Formed on Magnesium in Hot Chlorobenzotriazole Vapors

Experimental and computational study of Trachyspermum leaves extract as a green inhibitor for corrosion inhibition of mild steel in HCl

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