scholarly journals Study of Corrosion Behavior of N’-(2-(2-oxomethylpyrrol-1-yl)ethyl)piperidine for Mild Steel in the Acid Environment

2021 ◽  
Vol 12 (3) ◽  
pp. 3638-3646
Keyword(s):  
Electron Microscopy ◽  
Mild Steel ◽  
Steel Surface ◽  
Inhibition Efficiency ◽  
Protective Layer ◽  
Solution Temperature ◽  
Inhibitor Concentration ◽  
Acid Environment ◽  
Experimental Findings ◽  
Scanning Electron

The corrosion inhibition of mild steel in 1 M hydrochloric acid solution by N'-(2-(2-oxomethylpyrrol-1-yl)ethyl)piperidine (N-OPEP) was studied employing weight loss techniques. The experimental findings revealed that N-OPEP is the most excellent corrosion inhibitor, and the inhibitory performance increases with an increase in the inhibitor concentration. Furthermore, the inhibition efficiency decreases with an increase in the solution Temperature. The adsorption of inhibitor molecules on a mild steel surface followed Langmuir’s isotherm model and was found to be spontaneous. Scanning electron microscopy (SEM) photographs approved the formation of a protective layer of the inhibitor molecules on the surface of mild steel.

scholarly journals Inhibition Evaluation of 5-(4-(1H-pyrrol-1-yl)phenyl)-2-mercapto-1,3,4-oxadiazole for the Corrosion of Mild Steel in an Acidic Environment: Thermodynamic and DFT Aspects

2021 ◽  
Vol 38 (3−4) ◽  
Author(s):  
A. M. Mustafa ◽  
F. F. Sayyid ◽  
N. Betti ◽  
M. M. Hanoon ◽  
Ahmed Al-Amiery ◽  
...  
Keyword(s):  
Hydrochloric Acid ◽  
Mild Steel ◽  
Density Functional ◽  
Steel Surface ◽  
Protective Layer ◽  
Solution Temperature ◽  
Sem Images ◽  
Mild Steel Surface ◽  
Acid Environment ◽  
Increasing Temperature

In this investigation, an oxadiazole namely 5-(4-(1H-pyrrol-1-yl)phenyl)-2-mercapto-1,3,4-oxadiazole (PMO), was synthesized and explored as an inhibitor against the corrosion  of mild steel in 1.0 M hydrochloric acid environment at various solution temperature 303-333 K. gravimetric, and microscopic techniques, namely, weight loss (WL), and scanning electron microscopy (SEM), have been used to evaluate the inhibitive performance of the tested PMO. The results of the WL method displayed that the inhibition efficiency (%IE) was found to increase with the inhibitor concentration, while it reduced with increasing temperature. Furthermore, the WL results reveal that PMO inhibits corrosion display an IE of 95% at the highest concentration of 0.005 M. The SEM images of the mild steel surface coupon after adding PMO revealed a wide coverage of PMO molecules on the mild steel surface. Hence, the high inhibiting efficiency acquired by the tested inhibitor was explained by the strong adsorption of PMO molecules on the surface of mild steel. A protective layer has been constructed and it separating the mild steel surface from the hydrochloric acid solution, and such adsorption was found to obey Langmuir adsorption isotherm. Moreover, the thermodynamic parameters suggested that the adsorption nature of PMO molecules on the coupon surface was chemo-physisorption. Quantum chemical calculations were conducted by density functional theory (DFT) which help correlate the methodological findings with the theoretical investigations. The mechanisms of PMO molecules as corrosion inhibitor for mild steel surface in the corrosive environment was also discussed.

scholarly journals Experimental studies on corrosion inhibition performance of acetylthiophene thiosemicarbazone for mild steel in HCl complemented with DFT investigation

2020 ◽  
Author(s):  
S Al-Baghdadi ◽  
T S Gaaz ◽  
A Al-Adili ◽  
A A Al-Amiery ◽  
M S Takriff
Keyword(s):  
Mild Steel ◽  
Density Functional ◽  
Inhibition Efficiency ◽  
Experimental Studies ◽  
Protective Layer ◽  
Steel Sample ◽  
Electron Microscopic ◽  
Acid Environment ◽  
Inhibition Performance ◽  
Scanning Electron

Abstract The University of Technology in Baghdad addresses problems related to the corrosion of metals. In the present investigation, a thiophene derivative, namely, 2-acetylthiophene thiosemicarbazone (2-AT), was synthesized and examined as a corrosion inhibitor for mild steel in a 1-M hydrochloric acid environment by using weight loss and scanning electron microscopic techniques. The inhibition efficiency of this inhibitor increases with increase in concentration, which offered an inhibition efficiency up to 96%. It was found that the inhibition efficiency decreases with long immersion time. The temperature effect on the inhibition performance was studied at various immersion times and revealed that the inhibition efficiency decreases with increasing temperature. The adsorption of the inhibitor on the surface of mild steel in the corrosive environment followed the Langmuir isotherm. The results of scanning electron microscopy (SEM) reveal that the 2-AT molecules confirmed the presence of a protective layer on the surface of a mild steel sample. The density-functional theory as a quantum modeling technique which is used to study the electronic structure reveals that the obtained findings were found to be consistent with the experimental results.

scholarly journals Corrosion inhibition of mild steel using novel pyridine derivative in 1 M hydrochloric acid

2020 ◽  
Vol 64 (2) ◽  
pp. 59-64 ◽  
Author(s):  
A.A. Al-Amiery ◽  
L.M. Shaker
Keyword(s):  
Hydrochloric Acid ◽  
Mild Steel ◽  
Corrosion Inhibition ◽  
Inhibition Efficiency ◽  
Protective Layer ◽  
Pyridine Derivative ◽  
Inhibitor Concentration ◽  
Langmuir Adsorption ◽  
Mechanism Of Inhibition ◽  
Acid Environment

AbstractA novel pyridine derivative was synthesized, and its corrosion inhibition effects on mild steel in a 1M hydrochloric acid environment were investigated by gravimetric techniques, The results demonstrated that the inhibitive performance increased with the increasing of inhibitor concentration. At 303, the inhibition efficiency of pyridine derivative 4-hydroxy-3-(pyridin-2-ylaminomethyl)toluene accomplished 96.2% at the inhibitor concentration of 0.005 M. The mechanism of inhibition implicated the forming of a protective layer from inhibitor molecules on the surface of mild steel by a Langmuir adsorption isotherm. The presence of nitrogen and oxygen atoms in the structure of 4-hydroxy-3-(pyridin-2-ylaminomethyl)toluene confirmed by CHN-analysis revealed the adsorption of inhibitor molecules on the surface of mild steel surface.

scholarly journals Inhibition Effect of Hydrazine-Derived Coumarin on a Mild Steel Surface in Hydrochloric acid

2020 ◽  
Vol 37 (3−4) ◽  
Author(s):  
Fanar G. Hashim ◽  
Taghried A. Salman ◽  
Shaimaa B. Al-Baghdadi ◽  
Tayser Gaaz ◽  
Ahmed Al-Amiery
Keyword(s):  
Hydrochloric Acid ◽  
Mild Steel ◽  
Density Functional ◽  
Steel Surface ◽  
Inhibition Efficiency ◽  
Protective Layer ◽  
Sem Analysis ◽  
Mild Steel Surface ◽  
Acid Environment ◽  
Increasing Temperature

In this work, economy novel hydrazine-derived coumarin 4-(6-methylcoumarin)acetohydrazide (MCA) were synthesized, characterized, and tested as an inhibitor for the corrosion of a surface of mild steel in an acidic environment through weight loss and Scanning electron microscopy (SEM) techniques. Results showed that the synthesized inhibitor can inhibit the corrosion of mild steel surface in a 1 M hydrochloric acid environment. The corrosion inhibition efficiency of MCA increases with increasing MCA concentration and decreases with increasing temperature. SEM analysis showed the formation of a film as a protective layer from MCA molecules on the surface of mild steel. Adsorption of the MCA molecules on the mild steel surface in the presence of hydrochloric acid environment was obeyed Langmuir isotherm. The density functional theory (DFT) calculations were used to study the relationship between molecular structure and inhibition efficiency and they found in good agreement.

scholarly journals Evaluation of the Corrosion Inhibitive Properties of Three Different Leave Extracts on Mild Steel Iron in Sulphuric Acid Solution

2020 ◽  
pp. 6-17
Author(s):  
Gabriel N. Chukwueze ◽  
Christian O. Asadu ◽  
Chijioke E. Onu ◽  
Innocent S. Ike
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Acid Solution ◽  
Mild Steel ◽  
Corrosion Inhibition ◽  
Inhibition Efficiency ◽  
High Concentration ◽  
Leaf Extracts ◽  
Phytochemical Constituents ◽  
Scanning Electron

The inhibitive ability of pawpaw, neem and curry leaf extracts on corrosion of mild steel in sulfuric acid solution were investigated in this work. The extracts obtained from their respective leaves, were characterized to determine their phytochemical constituents as well as functional groups present using Fourier Transform Infrared Spectroscopy (FTIR) technique. Weight loss techniques was employed to evaluate the corrosion inhibition efficiency of the leaf extracts. The Scanning Electron Microscopy (SEM) was used to study the morphology of the mild steel before and after corrosion experiments. The process factors studied was exposure time, concentration of leaf extracts (inhibitor) and temperature. The results revealed that the phytochemical constituents of the leaves are capable of inhibiting corrosion due to high concentration of tannins which is responsible for the corrosion inhibition of mild steel. The rate of corrosion decreased with increase in the concentration of the extracts while the inhibition efficiency increased with increase in the concentration of the extracts. Scanning Electron Microscopy (SEM) revealed that the corroded mild steel in the presence of the extracts had smoother surfaces than corroded mild steel in the absence of the extracts. Also, neem leaf extract demonstrated higher potential as corrosion inhibitor than pawpaw and curry leaf extracts.

Computational Calculations, Gravimetrical, and Surface Morphological Investigations of Corrosion Inhibition Effect of Triazole Derivative on Mild Steel in HCl

2020 ◽  
Vol 17 (7) ◽  
pp. 2897-2904
Author(s):  
Shaimaa B. Al-Baghdadi ◽  
Ahmed A. Al-Amiery ◽  
Abdul A. Kadhum ◽  
Mohd Sobri Takriff
Keyword(s):  
Adsorption Isotherm ◽  
Mild Steel ◽  
Corrosion Inhibitor ◽  
Inhibition Efficiency ◽  
The Novel ◽  
Langmuir Adsorption ◽  
Computational Calculations ◽  
Acid Environment ◽  
Experimental Findings ◽  
High Inhibition

The inhibition efficiency of the novel synthesized corrosion inhibitor namely, 5,5’-(1,4-phenylene)bis(3-mercapto-4-methyl-1,2,4-triazole) (PBMMT) have been studied for mild steel in 1 M hydrochloric acid environment by using gravimetric techniques. PBMMT show high inhibition efficiency at 0.5 mM. The adsorption isotherm of the investigated inhibitor on the surface of mild steel obeys Langmuir adsorption isotherm. The surface morphology was tested by scanning electron microscopy (SEM) in the absence and presence of PBMMT as corrosion inhibitor. The results show that the mild steel surface in presence of PBMMT 0.5 mM was smooth and uncorroded in 1 M HCl solution. Quantum chemical calculations were quite fitted with the experimental findings.

scholarly journals Synthesis, characterization and gravimetric studies of novel triazole-based compound

2020 ◽  
Vol 15 (2) ◽  
pp. 164-170 ◽  
Author(s):  
Ahmed Al-Amiery ◽  
Lina M Shaker ◽  
Abdul Amir H Kadhum ◽  
Mohd S Takriff
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Nuclear Magnetic Resonance ◽  
Weight Loss ◽  
Mild Steel ◽  
Inhibition Efficiency ◽  
Corrosive Environment ◽  
Adsorption Data ◽  
Langmuir Isotherm Model ◽  
Scanning Electron

Abstract 4-Amino-3-(2-bromo-5-methoxyphenyl)-1H-1,2,4-triazole-5(4H)-thione (ATH) was synthesized and characterized by nuclear magnetic resonance and Fourier-transform infrared as spectroscopical techniques and elemental analysis. ATH was studied for corrosion inhibition of mild steel in corrosive environment by means of weight loss technique, scanning electron microscopy and the adsorption isotherm. ATH demonstrates a superior inhibition efficiency against corrosion of mild steel. Adsorption data fit well to a Langmuir isotherm model.

The role of drug as corrosion inhibitor for mild steel surface characterization by SEM, AFM, and FTIR

2016 ◽  
Vol 63 (4) ◽  
pp. 308-315 ◽  
Author(s):  
Md. Zaved Hossain Khan ◽  
Md. Abdul Aziz ◽  
Md. Rafiul Hasan ◽  
Md. Rashid Al-Mamun
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Mild Steel ◽  
Steel Surface ◽  
Content Type ◽  
Mild Steel Surface ◽  
Force Microscopy ◽  
Corrosion Rates ◽  
Atomic Force ◽  
Scanning Electron

Purpose The purpose of this study is to understand the inhibitor behavior of specific drug against mild steel corrosion and their adsorption mechanism on the surface. Design/methodology/approach Corrosion rates are influenced by the formation of inhibitor aggregates at the mild steel surface. Detail surface characterizations of mild steel have been studied before and after adsorption of drugs in 1N HCl solution. Scanning electron microscopy, atomic force microscopy and Fourier transform infrared spectroscopy were used to examine the effect of drug adsorption on steel surface. Findings Scanning electron microscopy analysis suggested that the metal had been protected from aggressive corrosion because of the addition of the inhibitors. Atomic force microscopy visualization confirmed the formation of protective layer on steel surface, resulting in the decrease in surface roughness with corrosion rates. The nature of metal surface has been analyzed by Fourier transform infrared spectroscopy. Originality/value The findings of this study will help us to understand the interaction of specific drugs with mild steel surface and their potential inhibition mechanism.

SELECTED BIS-THIADIAZOLE: SYNTHESIS AND CORROSION INHIBITION STUDIES ON MILD STEEL IN HCL ENVIRONMENT

2020 ◽  
Vol 27 (12) ◽  
pp. 2050014
Author(s):  
ABBAS Z. SALMAN ◽  
QUSAY A. JAWAD ◽  
KHALID S. RIDAH ◽  
LINA M. SHAKER ◽  
AHMED A. AL-AMIERY
Keyword(s):  
Mild Steel ◽  
Immersion Time ◽  
Inhibition Efficiency ◽  
Langmuir Adsorption Isotherm ◽  
Inhibitor Concentration ◽  
Conjugation System ◽  
Inhibition Effect ◽  
Langmuir Adsorption ◽  
Acid Environment ◽  
Inhibition Studies

The inhibition effect of synthesized corrosion inhibitor namely 5,5′-(1,4-phenylene)bis([Formula: see text]-phenyl-1,3,4-thiadiazol-2-amine) (PBPA) on the corrosion of mild steel in 1-M hydrochloric acid environment are examined by gravimetric techniques at various temperature (303–343 K). The synthesized inhibitor concentrations are 0.1–0.5[Formula: see text]mM. The inhibition efficiency increased with the increase of the inhibitor concentration. The inhibition efficiency reached 94% at the highest studied concentration of 0.5[Formula: see text]mM for 5[Formula: see text]h of immersion time and 303[Formula: see text]K. Moreover, the inhibition efficiency decreased with the temperature increase. The adsorption of tested inhibitor molecules on the surface of mild steel follows the Langmuir adsorption isotherm. The studied inhibitor molecules showed excellent inhibition since PBPA molecules have nitrogen and sulfur atoms in addition to phenyl and thiadiazol rings which were linked together in conjugation system.

scholarly journals Synergistic effect on inhibiton efficiency of coconut husk fibre essence in controlling corrosion of mild steel in neutral medium

2015 ◽  
Vol 49 (3) ◽  
pp. 185-188
Author(s):  
A Sankar ◽  
S Ananth Kumar ◽  
S Rameshkumar
Keyword(s):  
Weight Loss ◽  
Mild Steel ◽  
Steel Surface ◽  
Inhibition Efficiency ◽  
Electrochemical Impedance ◽  
Neutral Medium ◽  
Well Water ◽  
Inhibitor Concentration ◽  
Coconut Husk ◽  
Tank Water

The corrosion inhibition nature of coconut husk essence for the corrosion of mild steel in tank water (neutral medium) was investigated using weight loss, electrochemical impedance and Potentiodynamic Polarization methods. The results revealed that coconut husk essence acts as a corrosion inhibitor in well water. The inhibition efficiency increased with an increase in inhibitor concentration. The inhibition is attributed to adsorption of the inhibitor on the steel surface. DOI: http://dx.doi.org/10.3329/bjsir.v49i3.22133 Bangladesh J. Sci. Ind. Res. 49(3), 185-188, 2014

Sign in / Sign up

Export Citation Format

Share Document