Inhibition Studies of Aluminium alloy ( 2024) Corrosion in Acid Hydrochloride Solution Using an Expired Phenylphrine Drug | ||||
| Egyptian Journal of Chemistry | ||||
| Article 6, Volume 63, Issue 8, August 2020, Page 2863-2875 PDF (1.15 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/ejchem.2020.19583.2222 | ||||
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| Authors | ||||
R.A. Hamza; K.A. Samawi; Taghried Salman  
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| Chemistry Department,College of science,Al-Nahrain University,Baghdad,Iraq | ||||
| Abstract | ||||
| Weight loss method was used to investigate the inhibition and adsorption behavior of phenylphrine drug for aluminum2024 alloy corrosion in 1 M acidic chloride solution at 293-303 Kelvin. Results obtained indicate that phenylphrine act as inhibitor for Al 2024 alloy in molar hydrochloric acid solution. Increasing both phenylphrine concentration and temperature lead to increase the inhibition efficiency, which is indicating the chemisorption mechanism. The adsorption of the phenylphrine onto the Al 2024 alloy surface follow Langmuir adsorption isotherm model. The mechanism of inhibition was additionally proved by the activation parameters results that obtained from the experimental data. SEM image shows a smoothed surface of Al 2024 alloy in the presence of phenylphrine in acidic solution. Quantum chemical calculation was used to correlate inhibition efficiencies data of phenylphrine with its electronic structural parameters. Theoretical calculations support the experimental results and elucidate working mechanisms. | ||||
| Keywords | ||||
| weight loss; Phenylphrine; Aluminum alloy; Acid hydrochloride | ||||
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