scholarly journals Investigations on Corrosion Inhibitory Effect of Newly Quinoline Derivative on Mild Steel in HCl Solution Complemented with Antibacterial Studies

2021 ◽  
Vol 12 (2) ◽  
pp. 1561-1568
Keyword(s):  
Weight Loss ◽  
Mild Steel ◽  
Steel Corrosion ◽  
Inhibitory Effect ◽  
Industrial Applications ◽  
Quinoline Derivative ◽  
Inhibitory Effects ◽  
Diffusion Technique ◽  
Staphyloccocus Aureus ◽  
Inhibition Performance

This study analyzed the corrosion inhibitory effects and the antibacterial action of the quinoline derivative, namely N'-(2-hydroxybenzylidene)-2-(quinolin-8-yloxy)acetohydrazide (NHQA). NHQA prevention of corrosion behavior was investigated using weight loss experiments on mild steel coupons in hydrochloric acid. Weight loss tests achieved improved inhibition performance for NHQA, and the high inhibitor efficiency was reached at 303 K, of 93.4 percent at 500 ppm NHQA. Moreover, the effect of immersion time on carbon steel corrosion was investigated using strategies for weight loss. The NHQA mechanism for corrosion inhibition was also examined. These findings confirm that the NHQA molecules can be used in industrial applications as a possible corrosion inhibitor. In an aqueous solution, the synthesized compound (NHQA) can also be used as an antimicrobial agent. The microbial inhibitive efficacy of NHQA against Gram-positive (Staphyloccocus aureus) and Gram-negative bacteria (Escherichia coli, Proteus vulgaris, Klebsiella pneumoniae, and Pseudomonas aeruginosa) was evaluated employee a disc diffusion technique. NHQA has considerable inhibition efficacy toward all investigated bacteria.

scholarly journals The inhibition of mild steel corrosion in 0.5 M H2SO4 solution by radish leaf extract

RSC Advances ◽  
2019 ◽  
Vol 9 (70) ◽  
pp. 40997-41009 ◽  
Author(s):  
Dongyi Li ◽  
Panpan Zhang ◽  
Xinyu Guo ◽  
Xiaowei Zhao ◽  
Ying Xu
Keyword(s):  
Weight Loss ◽  
Mild Steel ◽  
Electrochemical Method ◽  
Leaf Extract ◽  
Steel Corrosion ◽  
Inhibitory Effect ◽  
H2so4 Solution ◽  
Mild Steel Corrosion ◽  
Weight Loss Method ◽  
Loss Method

The inhibitory effect of radish leaf extract (RLE) on mild steel corrosion in 0.5 M H2SO4 was studied by the weight loss method and the electrochemical method.

scholarly journals A Study of Mild Steel Corrosion UsingAdhatoda Vasica(AV) Extract as Inhibitor in Different Acid Medium

2010 ◽  
Vol 7 (4) ◽  
pp. 1284-1289 ◽  
Author(s):  
P. Matheswaran ◽  
A. K. Ramasamy
Keyword(s):  
Weight Loss ◽  
Mild Steel ◽  
Acid Medium ◽  
Acidic Medium ◽  
Active Sites ◽  
Mixed Type ◽  
Steel Corrosion ◽  
Adhatoda Vasica ◽  
Mild Steel Corrosion ◽  
Inhibitive Action

Corrosion behavior of mild steel in acidic medium usingAdhatoda Vasica(AV) extract was investigated. The inhibitive effective ofAdhatoda Vasicaon the corrosion of mild steel in different acidic medium has been studied by weight loss and polarization methods. The Ecorrvalues are shifted slightly towards negative side in presence of inhibitors which indicate the inhibitors inhibit the corrosion of mild steel in acids solution by controlling both anodic and cathodic reactions due to the blocking of active sites on the metal surface. It is evident that inhibitors bring about considerable polarization of the cathode as well as anode. It was, therefore, inferred that the inhibitive action is of mixed type.

5-Arylpyrimido-[4,5-b]quinoline-diones as new and sustainable corrosion inhibitors for mild steel in 1 M HCl: a combined experimental and theoretical approach

RSC Advances ◽  
2016 ◽  
Vol 6 (19) ◽  
pp. 15639-15654 ◽  
Author(s):  
Chandrabhan Verma ◽  
L. O. Olasunkanmi ◽  
I. B. Obot ◽  
Eno E. Ebenso ◽  
M. A. Quraishi
Keyword(s):  
Molecular Dynamics ◽  
Weight Loss ◽  
Molecular Dynamics Simulation ◽  
Mild Steel ◽  
Quantum Chemical ◽  
Corrosion Inhibitors ◽  
Steel Corrosion ◽  
Dynamics Simulation ◽  
Simulation Methods ◽  
Mild Steel Corrosion

The inhibition of mild steel corrosion in 1 M HCl by four 5-arylpyrimido-[4,5-b]-quinoline-diones has been investigated using weight loss, electrochemical, surface, and quantum chemical calculations and molecular dynamics simulation methods.

scholarly journals Study of the Inhibitive Action of Bakery Waste for Corrosion of Mild Steel in Acid Medium

1970 ◽  
Vol 25 ◽  
pp. 29-36 ◽  
Author(s):  
R. Rajalakshmi ◽  
S. Subhashini ◽  
S. Leelavathi ◽  
R. Geethanjali
Keyword(s):  
Weight Loss ◽  
Mild Steel ◽  
Corrosion Inhibition ◽  
Mixed Mode ◽  
Chemical Society ◽  
Inhibitory Effect ◽  
H2so4 Solution ◽  
Tafel Polarization ◽  
Egg Shell ◽  
Inhibitive Action

Bakery waste-egg shell extract was tested for its inhibitory effect towards mild steel in0.5 M H2SO4 solution. The corrosion behavior of the egg shell extract on mild steel (MS)was investigated using weight loss experiments, polarization and impedance measurements.It was found that the egg shell extract has good inhibitive action, showing 97.8% efficiency.Inhibition efficiency increased with increasing concentrations of the egg shell extract.Temperature studies were conducted to evaluate the kinetic and thermodynamic parameters.The corrosion inhibition takes place via monolayer type of adsorption on MS surface.Experimental results are fitted into various adsorption isotherms. Tafel polarization studiesrevealed the mixed mode of inhibition of the egg shell extract. Electrochemical impedanceresults also confirmed the inhibitive nature of the egg shell extract. The results obtainedshowed that the extract of the egg shell could serve as an effective, zero cost,environmentally friendly inhibitor for the corrosion of mild steel in sulphuric acid medium.Keywords: Egg shell, corrosion, inhibition, mild steel, H2SO4 solutionDOI:  10.3126/jncs.v25i0.3282Journal of Nepal Chemical Society Volume 25, 2010 pp 29-36

CORROSION INHIBITORY EFFECT OF FEW PIPERIDIN-4-ONE OXIMES ON MILD STEEL IN HYDROCHLORIC ACID MEDIUM

2009 ◽  
Vol 16 (01) ◽  
pp. 141-147 ◽  
Author(s):  
A. N. SENTHILKUMAR ◽  
K. THARINI ◽  
M. G. SETHURAMAN
Keyword(s):  
Weight Loss ◽  
Mild Steel ◽  
Electrochemical Impedance ◽  
Inhibitory Effect ◽  
Charge Transfer Resistance ◽  
Polarization Measurement ◽  
Transfer Resistance ◽  
Hydrochloric Acid Medium ◽  
Oxime Derivatives ◽  
Weight Loss Study

Three piperidin-4-one oxime derivatives viz. 3,5-dimethyl-2,6-diphenyl-piperidin-4-one oxime (DDPO), 3-ethyl-2,6-diphenyl-piperidin-4-one oxime (EDPO), and 1-methyl-3-isopropyl-2, 6-diphenyl-piperidin-4-one oxime (MIDPO) were synthesized. Corrosion inhibiting ability of these compounds in 1 M HCl was studied using weight loss study, potentiodynamic polarization measurements, electrochemical impedance spectroscopy, XRD and SEM with EDS measurements. Weight loss studies revealed that all the three oximes are good corrosion inhibitors. The order of inhibiting ability of these compounds is as follows: DDPO > EDPO > MINDO. Results of the polarization measurement showed that these inhibitors do not alter the mechanism of either hydrogen evolution or mild steel dissolution reaction, proving the mixed mode of inhibition. At constant acid concentration, increase of inhibitor concentration increased the charge transfer resistance (R ct ), complimented with decrease of double layer capacitance (C dl ), thereby indicating the increase of percentage inhibition efficiency. XRD and SEM with EDS analysis provided strong proof for the existence of inhibitor film over the mild steel surface.

scholarly journals Staminate Flower of Cocos Nucifera as Green Inhibitor for Mild Steel in HCl Medium

2012 ◽  
Vol 9 (3) ◽  
pp. 1632-1644 ◽  
Author(s):  
R. Rajalakshmi ◽  
A. S. Safina
Keyword(s):  
Weight Loss ◽  
Mild Steel ◽  
Cocos Nucifera ◽  
Staminate Flower ◽  
Steel Corrosion ◽  
Green Inhibitor ◽  
Flower Extract ◽  
Mild Steel Corrosion ◽  
Hcl Medium ◽  
Mixed Type Inhibitor

Corrosion control methods, especially the use of inhibitors, have gained monumental importance in the present scenario of expunging corrosion and the quest for eco-friendly reasons continues. To arrive at an inexpensive non-toxic, eco-friendly inhibitor formulations the present study on the use of Staminate Flower extract of Cocos Nucifera has been carried out by the classical weight loss measurements and electrochemical polarization measurements. The acid extract could bring out a maximum of 97.3% inhibition of mild steel corrosion in 1M HCl. Thermodynamic parameters of the corrosion process were calculated from temperature study. The adsorptive behaviour of Staminate Flower extract in acid solution may be approximated both by Langmuir and Temkin type isotherms. The results obtained by Tafel, Linear polarization resistance, and impedance spectroscopy have been correlated with the classical weight loss measurements. Values of Tafel constant ba and bc confirmed that the Staminate Flower extract acts like mixed type inhibitor. Examination of the surface of the metal in the presence of the inhibitor confirmed the deposition of inhibitor on the metal surface. The Staminate Flower extract in HCl medium efficiently inhibits the corrosion and proved to be zero cost inhibitor, eco-friendly, non-toxic, and highly economical.

scholarly journals Inhibition of Mild Steel Corrosion by 4-benzyl-1-(4-oxo-4-phenylbutanoyl)thiosemicarbazide: Gravimetrical, Adsorption and Theoretical Studies

Lubricants ◽  
2021 ◽  
Vol 9 (9) ◽  
pp. 93
Author(s):  
Ahmed A. Alamiery ◽  
Wan Nor Roslam Wan Isahak ◽  
Mohd S. Takriff
Keyword(s):  
Dft Calculations ◽  
Mild Steel ◽  
Active Sites ◽  
Steel Surface ◽  
Protective Efficacy ◽  
Steel Corrosion ◽  
Inhibitory Effect ◽  
Inhibitor Concentration ◽  
Mild Steel Surface ◽  
Mild Steel Corrosion

Gravimetric measurements were applied to study the inhibitory effect of 4-benzyl-1-(4-oxo-4-phenylbutanoyl)thiosemicarbazide (BOT) on the corrosion of mild steel in 1.0 M HCl. BOT has a good inhibitory efficacy of 92.5 percent at 500 ppm, according to weight loss results. The effect of inhibitor concentration on the mild corrosion behavior of steel was investigated and it was discovered that the higher the inhibitor concentration, the higher the damping efficiency. The results confirm that BOT is an effective corrosion inhibitor for mild steel in the presence of 1.0 M HCl. Furthermore, the higher protection efficiency with increasing temperature and the free energy value showed that BOT molecules participate in both chemisorption (coordination bonds between the active sites of BOT molecules and d-orbital of iron atoms) and physisorption (through the physical interactions on the mild steel surface). The adsorption mechanism on the mild steel surface obeys the Langmuir adsorption isotherm model. Quantum chemical calculations based on the DFT calculations were conducted on BOT. DFT calculations indicated that the protective efficacy of the tested inhibitor increased with the increase in energy of HOMO. The theoretical findings revealed that the broadly stretched linked functional groups (carbonyl and thionyl) and heteroatoms (sulfur, nitrogen and oxygen) in the structure of tested inhibitor molecules are responsible for the significant inhibitive performance, due to possible bonding with Fe atoms on the mild steel surface by donating electrons to the d-orbitals of Fe atoms. Both experimental and theoretical findings in the current investigation are in excellent harmony.

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