The Use of Glutamic Acid as Corrosion Inhibitor for Aluminium in Hcl Solution

Muhammad, Ayuba Abdullahi; Uzairu, Adamu; Iyun, J. F.; Abba, Hamza

doi:10.9790/5736-07215062

Cited by 10 publications

(3 citation statements)

References 23 publications

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“…The sheet was mechanically pressedcut into coupons, each of dimensions 2.0 cm × 2.0 cm × 0.001 cm, containing a small hole drilled near the upper edge. Each coupon was clean with Emery paper of different grade (10 by 100) by washing with distilled water degreased by ethanol, dipped in acetone and allowed to dry in air and preserved in a desiccator prior to experimental [11]. Fresh leaves of the henna plant were obtained from Tudun Yola garden in Gwale Local Government Area, Kano and identified at the Plant Science Department of Bayero University, Kano, Nigeria.…”

Section: Methodsmentioning

confidence: 99%

“…The coupon was withdrawn from the test solution at intervals of time, it was then washed with deionised water and light brush, dried in acetone and reweighed. The difference in weight was taken as the weight loss due to corrosion to test the effect of temperature and inhibitor concentration [11]. FTIR analysis (Cary 630 FTIR Spectrometer Agilent Technologies) using Attenuated total reflection technique was used to identify the major functional groups and bond present.…”

Section: Methodsmentioning

confidence: 99%

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Effect of Henna Leaves on the Corrosion Inhibition of Tin in Acidic and Alkaline Media

Ibrahim¹,

Sulaiman²,

Usman³

et al. 2019

WJAC

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The corrosion inhibition behaviour of Henna leaves on Tin in 1.0 M HCl and 1.0 M NaOH was investigated using weight loss technique at temperatures ranges, 25-50°C. The maximum inhibition efficiency was found to be 95.45 at optimum inhibitor concentration. The presence of the compound adsorbed on the tin coupons was verified by spectroscopic measurements of the surface before and after corrosion tests. The leaves extract of Lawsonia inermis was found to be more effective in alkaline solution. It also confirmed that the inhibition efficiency decreased with increased in temperature but increased with increasing inhibitor concentrations. The Activation energy, Gibbs free energy were found to be 28.131, 29.589 kJmol-1 ;-3.280,-3.245 kJmol-1 in acidic and alkaline media respectively. The adsorption was found to obey Freundlich isotherm with linear coefficient (R 2) and equilibrium parameter K ads to be 0.972, 0.957; 0.06, 0.05 for both systems in acidic and alkaline media respectively. Physical adsorption mechanism is proposed from the trend of ∆G ads. The negative values of ∆G ads shows the spontaneity of the inhibition process. The increase in the activation energy of the inhibition processes with values of 80kJ/mol support the mechanism of physical adsorption process. Lawsonia inermis leaves extract has proved to be more excellent inhibitor for tin in NaOH alkaline.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Effect of Henna Leaves on the Corrosion Inhibition of Tin in Acidic and Alkaline Media

Ibrahim¹,

Sulaiman²,

Usman³

et al. 2019

WJAC

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show abstract

“…Muhammad et al 93 studied the inhibition effectiveness of glutamic acid as a corrosion inhibitor for 98.70% aluminium in 0.20-1.00 M HCl solutions at 30-50 °C, using the WL, HE, and thermometric techniques. The authors reported that the inhibition effectiveness of glutamic acid increased when its concentration increased, but decreased with increasing temperature, the period of immersion, and the concentration of the HCl solution.…”

Section: Organic Corrosion Inhibitors In Hcl Solutionmentioning

confidence: 99%

Organic corrosion inhibitors for aluminium and its alloys in acid solutions: a review

2016

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The aim of this review is to summarise the research work published in the last two decades on the use of organic compounds as corrosion inhibitors for aluminium and its alloys in acidic solutions. The focus is on HCl and H 2 SO 4 solutions due to their extensive use in different applications, such as chemical and electrochemical etching, acid cleaning, anodising, and acid pickling of aluminium. Other acids are also reviewed. The inhibition effectiveness of numerous organic compounds and their possible inhibition type and mechanism are also discussed. Electrochemistry is mainly used to investigate inhibitor performance. permanent contact of aluminium (or an alloy of aluminium) with a certain solution. This type of corrosion is especially frequent in chloride solutions. Corrosion protectionThere are several methods to protect aluminium and its alloys, among which the anodising process, conversion coatings, paints, organic coatings, and corrosion inhibitors are found to be the most effective.Anodising is an electrochemical process to increase the thickness of aluminium oxide, where aluminium metallic material is connected as an anode in the electrolytic cell. The anodised oxide layer is thus thicker (5-30 μm) than the natural oxide layer 2, 3, 10, 13, 14 .Conversion coating consist of poorly soluble phosphate or chromium oxides, which are tightly bound to the surface of aluminium or its alloys 15-17 . These coatings affect the appearance, corrosion potential, electrical resistance, and other surface properties. Conversion coatings are formed via a chemical oxidation-reduction process on the metal surface. However, the drawback of these coatings and the accompanying procedures is their negative environmental impact 2 . Therefore, in recent years increasing interest has been shown in conversion coatings containing cerium 18-23 and metallic ions 24-28 or their combination 29, 30 .As mentioned above, another method of corrosion protection is to employ organic coatings. Before applying the organic coating, the aluminium surface should be cleaned and prepared. The process consists of degreasing the surface, followed by removal of the existing oxide layer and the application of the base layer and the primer. The surface cleaning and treatment influences the adhesion and anticorrosion properties of these coatings 31, 32 . The final layer is selected depending on the environmental conditions in which the product will be used [33][34][35][36] . The use of organic-inorganic coatings in the protection of aluminium and its alloys has been also studied 37-39 . Corrosion inhibitorsCorrosion inhibitors modify the metal surface either by forming insoluble compounds with aluminium or by forming a protective surface layer. Based on the electrochemical mechanism of action, the inhibitors can be classified as mixed-type inhibitors (inhibiting both cathodic and anodic reactions of the corrosion couple), anodic-type inhibitors (inhibiting the anodic reaction), or cathodic-type inhibitors (inhibiting the cathodic reaction). Inhibitors may ...

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Amino Acids and Their Derivatives as Corrosion Inhibitors

Zehra

Mobin

2021

Organic Corrosion Inhibitors

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The Use of Glutamic Acid as Corrosion Inhibitor for Aluminium in Hcl Solution

Cited by 10 publications

References 23 publications

Effect of Henna Leaves on the Corrosion Inhibition of Tin in Acidic and Alkaline Media

Effect of Henna Leaves on the Corrosion Inhibition of Tin in Acidic and Alkaline Media

Organic corrosion inhibitors for aluminium and its alloys in acid solutions: a review

Amino Acids and Their Derivatives as Corrosion Inhibitors

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