Improvement of Corrosion Resistance of Aluminium Alloy by Natural Products

Rosliza, R.

doi:10.5772/32952

Cited by 12 publications

(19 citation statements)

References 33 publications

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“…Anodic and cathodic processes of aluminium corrosion in saline solution are dissolution of aluminium and reduction of dissolved oxygen, respectively [12].…”

Section: Results and Discussion Potentiodynamic Polarization Measuremmentioning

confidence: 99%

“…The degree of surface coverage (θ) and inhibition efficiency (%IE) of the aluminium in 3.5% NaCl in the presence of ampicillin with different concentrations and five experimental temperatures were calculated using equations 5 and 6 respectively and the results are given in Table 1. Where i1 and i2, are the corrosion current densities in the absence and presence of ampicillin in 3.5 % of NaCl aqueous solution respectively [12].…”

Section: Surface Coverage and Inhibition Efficiencymentioning

confidence: 99%

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The Inhibition Effect of Ampicillin on Corrosion of Pure Aluminium in 3.5% NaCl Aqueous Solution

Hameed

Salman

Al-Saidi

2015

JNUS

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The Inhibition of the corrosion of pure aluminium in 3.5% NaCl aqueous solution using ampicillin has been studied using potentiodynamic polarization and scanning electron microscopy (SEM) techniques. It was found that the ampicillin effectively reduces the aluminium corrosion in the saline solution. Inhibition efficiency (%IE) is increased as the inhibitor concentration increases; on the other hand, (%IE) is decreased when the temperature increases. The adsorption of inhibitor on metal surface was spontaneous and follows Langmuir adsorption isotherm. Quantum mechanical has been accomplished using B3LYP/6-31G basis set method to ascertain any correlation between the inhibitive effect and molecular structure of ampicillin.

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“…Anodic and cathodic processes of aluminium corrosion in saline solution are dissolution of aluminium and reduction of dissolved oxygen, respectively [12].…”

Section: Results and Discussion Potentiodynamic Polarization Measuremmentioning

confidence: 99%

Section: Surface Coverage and Inhibition Efficiencymentioning

confidence: 99%

The Inhibition Effect of Ampicillin on Corrosion of Pure Aluminium in 3.5% NaCl Aqueous Solution

Hameed

Salman

Al-Saidi

2015

JNUS

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“…Anodic and cathodic processes of aluminum corrosion in saline medium are dissolution of aluminum and reduction of dissolved oxygen, respectively, as [35] 4Al → 4Al 3+ + 12e −…”

Section: Potentiodynamic Polarization Measurementsmentioning

confidence: 99%

Inhibitive Action of Ferrous Gluconate on Aluminum Alloy in Saline Environment

Popoola

Omotayo

Loto

et al. 2013

Advances in Materials Science and Engineering

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The corrosion of aluminum in saline environment in the presence of ferrous gluconate was studied using weight loss and linear polarization methods. The corrosion rates were studied in different concentrations of ferrous gluconate 0.5, 1.0, 1.5, and 2.0 g/mL at 28°C. Experimental results revealed that ferrous gluconate in saline environment reduced the corrosion rate of aluminum alloy at the different concentrations studied. The minimum inhibition efficiency was obtained at 1.5 g/mL concentration of inhibitor while the optimum inhibition efficiency was achieved with 1.0 g/mL inhibitor concentration. The results showed that adsorption of ferrous gluconate on the aluminium alloy surface fits Langmuir adsorption isotherm. The potentiodynamic polarization results showed that ferrous gluconate is a mixed type inhibitor. Ferrous gluconate acted as an effective inhibitor for aluminium alloy within the temperature and concentration range studied. The data obtained from weight loss and potentiodynamic polarization methods were in good agreement.

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“…Green polymeric inhibitors are natural biopolymers obtained from plants and animals, and they include starch, lignin, cellulose, cashew nut shell liquid, sucrose, rice husks, caffeic acid, lactic acid, chitosan to mention but a few. Recent studies have focused on the evaluation and development of "environmentally friendly" compounds as corrosion inhibitors, these environmentally corrosion inhibitors include starch [3], pectin [4,5], chitosan [6,7], gum arabic [8,9], honey, glucose, hydroxyethyl cellulose, gellan gum, chitosan. These green polymers comprise functional groups which impart excellent adhesion and corrosion resistant performance to the substrate.…”

Section: Introductionmentioning

confidence: 99%

“…The methods of decreasing starch crystalline regularity include drying such as extrusion, drum drying or spray drying, enzymatic degradation processes [20,21], chemical processes, such as acidolysis, oxidation [22], and physical processes, such as heat-moisture treatment, radioactive degradation, microwave degradation, ultrasonic degradation and extrusive degradation processes.). A number of studies have focused on the corrosion inhibition performance of native starches [7,23], modified starches [9,[24][25][26][27][28][29] and synergistic studies of starch with other compounds [3,30].…”

Section: Introductionmentioning

confidence: 99%

Corrosion inhibition of galvanized steel in hydrochloric acid medium by a physically modified starch

et al. 2020

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Native starch extracted from sweet potato tubers was modified via extrusion. The native starch and modified starch were characterized by Fourier transform infrared (FTIR) spectroscopy, which revealed slight modifications in peak position and intensities on starch modification. The modified starch was evaluated as a corrosion inhibitor of galvanized steel in 1 M HCl solution by gravimetric and potentiodynamic polarization measurement techniques. Results obtained from gravimetric measurement reveals that the modified starch inhibition efficacy was dependent on time, concentration and temperature, increasing with increase in concentration and decreasing with increase in time of immersion and temperature of the system. Maximum inhibition efficiency of 64.26% was obtained at a concentration of 0.7 g/L PMS. Also, result from polarization technique indicated that the modified starch belonged to a mixed-type inhibitor. Adsorption of the inhibitor on the galvanized steel surface was found to obey the Langmuir adsorption isotherm.

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Improvement of Corrosion Resistance of Aluminium Alloy by Natural Products

Cited by 12 publications

References 33 publications

The Inhibition Effect of Ampicillin on Corrosion of Pure Aluminium in 3.5% NaCl Aqueous Solution

The Inhibition Effect of Ampicillin on Corrosion of Pure Aluminium in 3.5% NaCl Aqueous Solution

Inhibitive Action of Ferrous Gluconate on Aluminum Alloy in Saline Environment

Corrosion inhibition of galvanized steel in hydrochloric acid medium by a physically modified starch

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