A Study of the Corrosion Inhibition of Mild Steel in 0.5M Tetraoxosulphate (VI) acid by Alstonia boonei Leaves Extract as an Inhibitor at Different Temperatures

Godwin-Nwakwasi, Evelyn U.; Elachi, Elachi E.; Ezeokonkwo, Mercy A.; Onwuchuruba, Lawrence E.

doi:10.22161/ijaems.3.12.9

Cited by 3 publications

(3 citation statements)

References 18 publications

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“…An inspection of the figures revealed that the corrosion rates increased with temperature. Similar trends were also obtained by Loto et al (2011) and Godwin -Nwakwasi et al (2017).…”

Section: Effect Of Temperature On Corrosion Ratesupporting

confidence: 90%

“…Plants are now being used as alternatives to chemicalbased corrosion inhibitors because they are cheap, ecologically friendly and renewable sources (Umoren et al, 2008). Several researchers have successfully used extracts from green plants to mitigate the corrosion of metals in various media (Molina -Ocampo et al, 2015;Fadare et al, 2016;Godwin-Nwakwasi et al, 2017;Khadom et al, 2018;Agi et al, 2018;Waidi et al, 2020;Izionworu et al, 2021;Oruene et al, 2021). Though many plants have been investigated for their anticorrosion inhibition capabilities, there are still many that have not been studied for their corrosion inhibition potentials.…”

Section: Introductionmentioning

confidence: 99%

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Corrosion Inhibition Effects of Ficus exasperatae and Costus afer in Acidic Medium at Different Temperatures

Godwin- Nwakwasi,

Elachi,

Ezeokonkwo

et al. 2023

Nig J Bas App Sci

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One of the most effective ways of mitigating the corrosion of metals in various media is by using of corrosion inhibitors. Due to the harmful effects of chemical-based corrosion inhibitors, attention is now shifting to plant materials which are environmentally friendly. Therefore, this paper investigates the corrosion inhibition potentials of Ficus exasperata and Costus afer leaves extracts on the corrosion of mild steel in 0.5 M hydrochloric acid medium at different temperatures (303 – 343 K). Secondly, to determine the effect of temperature on the corrosion inhibition performance of Ficus exasperata and Costus afer. The weight loss method of corrosion measurement was used to evaluate the corrosion inhibition potentials of the plant extracts. The results showed that Ficus exasperata and Costus afer inhibited the corrosion of mild steel in hydrochloric acid medium at all temperatures. Corrosion rates decreased with increase in concentration of the extracts. Concentration of the extracts used (0.125 g/L, 0.25 g/L, 0.5 g/L, 1.25 g/L and 2.5 g/L) did not significantly (p > 0.05) affect the corrosion rate of mild steel in the acidic media. Corrosion rates increased with increase in temperature. Inhibition efficiencies of the extracts increased with increase in concentration of the extracts and decreased with increasing temperatures. The adsorption of the extracts on the metal surface occurred by physical adsorption. Ficus exasperata and Costus afer could serve as effective inhibitors for mild steel in acidic media and their efficiencies are affected by high temperatures.

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“…An inspection of the figures revealed that the corrosion rates increased with temperature. Similar trends were also obtained by Loto et al (2011) and Godwin -Nwakwasi et al (2017).…”

Section: Effect Of Temperature On Corrosion Ratesupporting

confidence: 90%

Section: Introductionmentioning

confidence: 99%

Corrosion Inhibition Effects of Ficus exasperatae and Costus afer in Acidic Medium at Different Temperatures

Godwin- Nwakwasi,

Elachi,

Ezeokonkwo

et al. 2023

Nig J Bas App Sci

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“…The displacement indicates that SCLE acts as a mixed-type inhibitor that hinders both anodic and cathodic reactive sites due to the electroactive components of the inhibitor being adsorbed across the API 5L surface [37,38]. In addition, shifting potential corrosion is less than -85 mV from the blank to the anodic or cathodic directions; inhibitors can be classified as mixed-type inhibitors [39,40]. The displacement of potential corrosion was all less than -85 mV.…”

Section: Discussion Of Syzygium Cumini As a Green Corrosion Inhibitormentioning

confidence: 99%

Effect of syzygium cumini leaf extract as a green corrosion inhibitor on API 5l carbon steel in 1M HCL

Riastuti

Mashanafie

Rizkia

et al. 2022

EEJET

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Corrosion in API 5L steel under 1M HCl is a common issue; hence, creating a more effective and naturally-based inhibitor is critical. In this research, Syzygium Cumini leaf extract (SCLE) was used as a new green corrosion inhibitor under acidic conditions. The inhibition properties of the novel cumini extract were thoroughly characterized using potentiodynamic polarization (PDP), electrochemical impedance spectroscopy (EIS), Fourier-transform infrared spectroscopy (FTIR), and atomic force microscope (AFM). The results show that the cumini inhibitor has excellent corrosion inhibition with 93 % inhibition efficiency. The adsorption behavior of the inhibitor follows the Langmuir Adsorption Isotherm due to the nearness of R2 to unity. The potentiodynamic and electrochemical measurements demonstrate the mixed type of corrosion inhibitor. Thermodynamic calculation of ΔGads is – 18.41 kJ mol-1 showing the physical adsorption process between the inhibitor and metals. Further inspection of ΔHads at ‒58.93 kJ mol-1 considers releasing energy during adsorption. The FTIR results agree with the increased growth of passive layers due to the adsorption of polyphenol and flavonoids on metals. Remarkably, the adsorption peak at 3266.59 cm-1 corresponds to the adsorption of –OH. The peak at 1612.56 and 1698.4 cm-1 is attributed to C=C and C=O functional groups. The above functional groups serve as adsorption centers to reduce the corrosion effect. The surface treatment of AFM indicated a good relationship with the functional group characterization and confirmed the significant corrosion rate reduction. This work can be used as a benchmark to develop a natural plant as a corrosion inhibitor.

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Seaweed (Sargassum polycystum) extract as eco-friendly corrosion inhibitor for mild steel in CO2-saturated 3.5% NaCl solution

Prifiharni,

Nikitasari,

Priyotomo

et al. 2024

5TH INTERNATIONAL SEMINAR ON METALLURGY AND MATERIALS (ISMM2022): Strengthening Research and Innovation in Metallurgy and Mater

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A Study of the Corrosion Inhibition of Mild Steel in 0.5M Tetraoxosulphate (VI) acid by Alstonia boonei Leaves Extract as an Inhibitor at Different Temperatures

Abstract: Abstract-

Cited by 3 publications

References 18 publications

Corrosion Inhibition Effects of <i>Ficus</i> exasperatae and <i>Costus afer</i> in Acidic Medium at Different Temperatures

Corrosion Inhibition Effects of <i>Ficus</i> exasperatae and <i>Costus afer</i> in Acidic Medium at Different Temperatures

Effect of syzygium cumini leaf extract as a green corrosion inhibitor on API 5l carbon steel in 1M HCL

Seaweed (Sargassum polycystum) extract as eco-friendly corrosion inhibitor for mild steel in CO2-saturated 3.5% NaCl solution

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