Green corrosion inhibitors for aluminium and its alloys: a review

Xhanari, Klodian; Finšgar, Matjaž; Chen, Lin; Knez, Željko; B, Seiti

doi:10.1039/c7ra03944a

Cited by 156 publications

(66 citation statements)

References 148 publications

(350 reference statements)

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“…In addition, the post‐reaction disposal of toxic industrial corrosion inhibitors leads to pollution of the environment and have jeopardizing consequences on ecosystem processes …”

Section: Introductionmentioning

confidence: 99%

“…Therefore, the concept of “Green Chemistry” was proposed and the natural and biodegradable chemicals that are not detrimental to our environment have become a recent focus for preventing the corrosion of industrial facilities . In this regard, many types of green corrosion inhibitors (e.g., Equisetum arvense , Alghel) with high corrosion inhibition efficiency have been extracted from natural resources such as plants.…”

Section: Introductionmentioning

confidence: 99%

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Chitosan as a green inhibitor for mild steel corrosion: Thermodynamic and electrochemical evaluations

Rabizadeh

Asl

2018

Materials & Corrosion

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In this research, the effects of chitosan on the corrosion behavior of mild steel in 0.1 M hydrochloric acid was investigated by different approaches. According to weight loss measurements, increasing the concentration of chitosan from 0.3 to 1.8 mM, significantly reduced the corrosion rate of mild steel, for example, from 95.5 ± 5 to 7.5 ± 5 mpy at 298 K. The thermodynamic calculations indicate an increase in the corrosion activation energy and the enthalpy of activation when 1.8 mM chitosan was added to the aggressive solution. The electrochemical polarization technique revealed a decrease in corrosion current density which is compatible with the observed increase in the charge transfer resistance measured by electrochemical impedance spectroscopy. The EDS spectra confirmed the adsorption of chitosan on mild steel. Analyzing the surface topography of the coupons by atomic force microscopy showed a remarkable decrease in the corrosion rate of the specimens in the presence of chitosan.

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“…In addition, the post‐reaction disposal of toxic industrial corrosion inhibitors leads to pollution of the environment and have jeopardizing consequences on ecosystem processes …”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Chitosan as a green inhibitor for mild steel corrosion: Thermodynamic and electrochemical evaluations

Rabizadeh

Asl

2018

Materials & Corrosion

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“…They contain polar or hetero atoms such as S, N, O, P and aromatic rings, favoring the adsorption by donor-acceptor interaction between π electrons of donor atoms S, N, O, P and aromatic rings of inhibitors, and the vacant d-orbitals of metal surface atoms [16]. Because of adsorption of inhibitor molecules on the metal surface, protective film is formed that isolates the metal from the aggressive environment.…”

Section: Organic Green Inhibitorsmentioning

confidence: 99%

“…Also, they are easily biodegradable and contaminated by microorganisms which limit the storage of liquid extract or even the solid extract for a long term. According to a number of research works published in the last two decades on these groups of products, plant extracts occupy the first place by 68% for aluminum and its alloys corrosion inhibition (Figure 1) [16].…”

Section: Advantages and Limitations Of Plant Extract Usementioning

confidence: 99%

Green Methods for Corrosion Control

Emran¹,

Ali²,

lehaibi³

2018

Corrosion Inhibitors, Principles and Recent Applications

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Corrosion of metals is a serious environmental problem. Most of the corrosion inhibitors are synthetic chemicals that are hazardous to environments and expensive. Today, there has been an increasing search for green corrosion inhibitors, due to the toxicity of some inhibitors. Green corrosion inhibitors are biodegradable and free of heavy metals or other toxic compounds. There is an intensive effort underway to develop new plant origin corrosion inhibitors for metal subjected to various environmental conditions. Salts of rare earth elements can be also used as inorganic alternative nontoxic corrosion inhibitors. Sol-gel coatings can be recommended as green protective films for metal corrosion. The origin of sol-gel process, its advantages and limitations, and the type of coating method are presented in this chapter, as well as a brief summary of recent literature concerning the use of hybrid inorganic-organic sol-gel and nanostructured sol-gel protective coatings for metal corrosion in different media.

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“…The metronidazole drug presented a high performance as corrosion inhibitor for copper in 1.0 M HCl solution [14]. Penicillins, cephalosporins, aminoglycosides, azoles and other drugs were the most studied compounds as corrosion inhibitors for aluminum and its alloys in various solutions [15,16].…”

Section: Introductionmentioning

confidence: 99%

Inhibitory Properties of Neomycin Thin Film Formed on Carbon Steel in Sulfuric Acid Solution. Electrochemical and AFM Investigation

Samide¹,

Iacobescu²,

Tutunaru³

et al. 2017

Preprint

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Our study aims to implement a strategy to reduce the carbon steel corrosion rate in sulfuric acid solution, using an expired drug with adsorption affinity on the metal surface. To investigate the corrosion protection efficiency of an environmental friendly inhibitor, namely neomycin sulfate (NMS), the electrochemical measurements were applied on carbon steel immersed in 1.0 M H2SO4 solution with and without NMS. The protective layer formed on the steel surface was studied by atomic force microscopy (AFM). The potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) showed that the presence of the neomycin sulfate in acid solution leads to the decrease in corrosion current density (icorr) and the increase of polarization resistance (Rp). The mixed mechanism between physical and chemical adsorption of NMS molecules on the steel surface was proposed according to the Langmuir adsorption isotherm. The Atomic Force Microscopy (AFM) indicated that the NMS molecules contributed to a protective layer formation by their adsorption on the steel surface. The AFM parameters such as: rootmean-square roughness (Rq); average roughness (Ra) and maximum peak to valley height (Rp-v) revealed that in the presence of NMS a smoother surface of carbon steel was obtained, compared to the steel surface corroded in sulfuric acid blank solution.

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Green corrosion inhibitors for aluminium and its alloys: a review

Abstract: A comprehensive review on natural compounds as corrosion inhibitors for aluminium and aluminium alloys in different solutions is presented.

Cited by 156 publications

References 148 publications

Chitosan as a green inhibitor for mild steel corrosion: Thermodynamic and electrochemical evaluations

Chitosan as a green inhibitor for mild steel corrosion: Thermodynamic and electrochemical evaluations

Green Methods for Corrosion Control

Inhibitory Properties of Neomycin Thin Film Formed on Carbon Steel in Sulfuric Acid Solution. Electrochemical and AFM Investigation

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