scholarly journals CORROSION INHIBITION PROPERTY OF EXPIRED FLUOXYMESTERONE DRUG ON THE ALUMINUM (AL) SURFACE IN 3 % NaCl SOLUTION

2019 ◽  
pp. 48-50 ◽  
Author(s):  
NARASIMHA RAGHAVENDRA ◽  
LEENA V. HUBLIKAR ◽  
ANJALI S. BHINGE ◽  
POOJA J. GANIGER
Keyword(s):  
Corrosion Inhibition ◽  
Adsorption Mechanism ◽  
Adsorption Property ◽  
Neutral Medium ◽  
Nacl Solution ◽  
Corrosive Solution ◽  
Drug Molecules ◽  
Aluminum Metal ◽  
Inhibition Property ◽  
Corrosion Research

Objective: Aluminum (Al) corrosion in the NaCl solution is an example of dissolution in the neutral medium. The ongoing corrosion research efforts to produce the eco-friendly corrosion inhibitors to protect the aluminum metal from the corrosive solution. Methods: Herein, mass loss and atomic absorption spectroscopy (AAS) techniques were conducted to explain the adsorption property of expired Fluoxymesterone drug on the Al surface in the 3 % NaCl solution. Results: All results show that the expired Fluoxymesterone drug molecules generate a stable invisible layer through adsorption mechanism on the electrode surface. The corrosion inhibition behavior mainly depends on the concentration of the expired Fluoxymesterone drug and contact time at 313 K. Conclusion: The corrosion inhibition property is due to adsorption of electron-rich molecules on the Al surface in 3 % NaCl solution.

Inhibition Action and Adsorption Behavior of 3-Amino-1,2,4-Triazole on Copper in 3% NaCl Solution

2010 ◽  
Vol 148-149 ◽  
pp. 1343-1346 ◽  
Author(s):  
Qun Jie Xu ◽  
Si Jing Ding ◽  
Hong Yun ◽  
Shi Feng Shi
Keyword(s):  
Adsorption Isotherm ◽  
Corrosion Inhibition ◽  
Adsorption Mechanism ◽  
Inhibition Efficiency ◽  
Ac Impedance ◽  
Adsorption Behavior ◽  
Nacl Solution ◽  
Maximum Value ◽  
Dc Polarization

The corrosion inhibition of copper in 3% NaCl solution by 3-amino-1, 2, 4-triazole (ATA) has been studied in relation to the concentration of the inhibitor using electrochemical (AC impedance and dc polarization) techniques. The results indicate that ATA has good corrosion inhibition for copper in 3% NaCl solution. The inhibition efficiency attains the maximum value of 97.65% when the concentration of ATA is 20 mg•L-1.Polarisation curves show that ATA behaves as a type of cathodal inhibition in 3% NaCl solution. Adsorption of the ATA is found to follow the Langmuir’s adsorption isotherm, and the adsorption mechanism is typical of chemisorption.

Corrosion inhibition of aluminum type 6061 Al-15 vol. pct. SiC(p) composite in 0.5-M sodium hydroxide solution by 4-amino-5-phenyl-4H-1,2,4-triazole-3-thiol

2014 ◽  
Vol 61 (4) ◽  
pp. 241-249 ◽  
Author(s):  
Reena Kumari P.D. ◽  
Jagannath Nayak ◽  
A. Nityananda Shetty
Keyword(s):  
Sodium Hydroxide ◽  
Corrosion Inhibition ◽  
Electrochemical Impedance ◽  
Sodium Hydroxide Solution ◽  
Base Alloy ◽  
Activation Parameters ◽  
Spectroscopic Techniques ◽  
Content Type ◽  
Naoh Solution ◽  
Inhibition Property

Purpose – The purpose of this paper is to report the studies on the corrosion inhibition property of 4-amino-5-phenyl-4H-1,2,4-triazole-3-thiol (APTT) for the corrosion of 6061 Al-15 vol. pct. SiC(p) composite. Design/methodology/approach – The corrosion behavior of 6061 Al-15 vol. pct. SiC(p) composite was studied at different temperatures in 0.5-M sodium hydroxide (NaOH) solution in the presence of APTT by potentiodynamic polarization (PDP) and electrochemical impedance spectroscopic techniques. The effect of inhibitor concentration and temperature on the inhibitor effect of APTT was studied. The surface morphology of the metal surface was investigated by scanning electron microscopy. The activation parameters for the corrosion of the composite and base alloy, as well as the thermodynamic parameters for the adsorption of APTT on the composite and alloy surfaces, were calculated. Findings – The inhibition efficiency of APTT increases with the increase in the concentration of the inhibitor and decreases with the increase in temperature. The adsorption of APTT on the composite was found to be through physisorption, obeying Langmuir’s adsorption isotherm. APTT acts as a mixed inhibitor with predominant cathodic action on the composite. Practical implications – APTT can be used as an inhibitor for the corrosion of 6061 Al-15 vol. pct. SiC(p) composite in the NaOH medium. Originality/value – This paper provides information regarding the corrosion inhibition property of APTT on 6061 Al-15 vol. pct. SiC(p) composite. An attempt was made to explain the mechanism of the inhibition action by APTT.

Corrosion inhibition of pure Mg containing a high level of iron impurity in pH neutral NaCl solution

2018 ◽  
Vol 142 ◽  
pp. 222-237 ◽  
Author(s):  
Junjie Yang ◽  
Carsten Blawert ◽  
Sviatlana V. Lamaka ◽  
Kiryl A. Yasakau ◽  
Li Wang ◽  
...  
Keyword(s):  
Corrosion Inhibition ◽  
Iron Impurity ◽  
Nacl Solution ◽  
High Level

Superhydrophobic Myristic Acid/TiO2-Nickel Coating with Improved Corrosion Inhibition Property Created by Facile Electrodeposition and Modification Methods

JOM ◽  
2021 ◽  
Vol 73 (10) ◽  
pp. 3111-3120
Author(s):  
Xin Zhang ◽  
Huawei Yin ◽  
Jianting Tang ◽  
Chuanbo Hu ◽  
Tingzhen Li
Keyword(s):  
Corrosion Inhibition ◽  
Myristic Acid ◽  
Nickel Coating ◽  
Inhibition Property

scholarly journals Corrosion Inhibition Performances of Imidazole Derivatives-Based New Ionic Liquids on Carbon Steel in Brackish Water

2020 ◽  
Vol 10 (20) ◽  
pp. 7069
Author(s):  
Megawati Zunita ◽  
Deana Wahyuningrum ◽  
Buchari ◽  
Bunbun Bundjali ◽  
I Gede Wenten ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Carbon Steel ◽  
Corrosion Inhibition ◽  
Brackish Water ◽  
Corrosion Inhibitors ◽  
Electrochemical Impedance ◽  
Nacl Solution ◽  
Adsorption Mechanisms ◽  
Water Media ◽  
Steel Surfaces

In this study, imidazole derivative-based new ionic liquids were investigated as corrosion inhibitors. These new ionic liquids (ILs) are 1,3-dipropyl-2-(2-propoxyphenyl)-4,5-diphenylimidazole iodide (IL1) and 1,3-dibutyl-2-(2-butoxyphenyl)-4,5-diphenylimidazole iodide (IL2). The corrosion inhibition effects of two new ILs were observed on carbon steel in brackish water media (1% NaCl solution). Carbon steel coupons were exposed to 1% NaCl solution with various concentrations of ILs. Corrosion inhibition effects were tested by the electrochemical impedance spectroscopy (EIS) method and the Tafel method at various temperatures ranging from 25 °C to 55 °C. The results showed that ILs have potential as corrosion inhibitors and the adsorption mechanisms of IL1 and IL2 on carbon steel surfaces were also determined, which followed the Langmuir adsorption isotherm model. Acquisition of ∆Gads values of IL1 and IL2 were −35.04 and −34.04 kJ/mol, respectively. The thermodynamic data of the ILs show that semi-chemical and or physical adsorptions occurred on carbon steel surfaces.

Anticorrosion Behavior of ZnO Nanoparticles Coated on Mild Steel in NaCl Solution

2020 ◽  
Vol 20 (7) ◽  
pp. 4061-4068
Author(s):  
S. Subhasree ◽  
P. Anitha ◽  
K. Kannan ◽  
A. Ramachandran ◽  
J. J. Sheri ◽  
...  
Keyword(s):  
Mild Steel ◽  
Zno Nanoparticles ◽  
Electrochemical Impedance ◽  
Average Diameter ◽  
Polarization Measurement ◽  
Ocimum Sanctum ◽  
Nacl Solution ◽  
X Ray ◽  
Corrosive Solution ◽  
Nano Coating

This work focuses on the environment protected, ecological procedure by the combination of ZnO nanoparticles utilizing the extraction of Ocimum sanctum. The prepared nanoparticles are examined by different methods like Fourier-transform infrared spectroscopy (FTIR), X-ray Diffraction (XRD), Field emission scanning electron microscopy (FE-SEM), Energy Dispersive X-ray Analysis (EDAX). A systematic study has been made on the result of ZnO nano-coating for the corrosion behavior of mild steel. The ZnO nanoparticles of average diameter in the range 18–22 nm were coated on mild steel in nickel bath solution. The anticorrosion properties on the coated mild steel was carefully tested in 3.5% NaCl solution by performing potentio-dynamic polarization measurement and electrochemical impedance spectroscopy. Surface morphology of the coated mild steel immersed in corrosive solution was judged by using SEM with EDAX. The ZnO nano coating has shown a perfect protection against corrosion and the shielding capability is in the range between 86–95%. The incorporation of ZnO nanoparticles has upgraded the process of mild steel in all corrosion media are subjected to investigation.

Corrosion Inhibition of Polyethylene Glycol for Magnesium Alloy AZ91 at Different Temperatures

2014 ◽  
Vol 1015 ◽  
pp. 692-695
Author(s):  
Wei Shang ◽  
Zhou Lan Yin ◽  
Yu Qing Wen ◽  
Xu Feng Wang
Keyword(s):  
Polyethylene Glycol ◽  
Magnesium Alloy ◽  
Corrosion Inhibition ◽  
Inhibition Efficiency ◽  
Nacl Solution ◽  
Alloy Az91 ◽  
Magnesium Alloy Az91 ◽  
Polyethylene Glycol 200 ◽  
Different Temperatures ◽  
Corrosion Inhibition Efficiency

the corrosion inhibition of polyethylene glycol 200 for magnesium alloy AZ91 in 1% NaCl solution at different temperatures are studied. The morphology of the sample at 25°C is analyzed by SEM. And CHI600C electrochemistry workstation is employed to investigate the corrosion inhibition of the samples. The results show that the corrosion inhibition efficiency of polyethylene glycol 200 to the magnesium alloy AZ91 is affected by temperature. Polyethylene glycol 200 has superior corrosion inhibition to the magnesium alloy at the temperature of 25°C.

Electrochemical Studies of some New Mannich Bases Compounds as Corrosion Inhibitors for Mild Steel in Acidic Media

2012 ◽  
Vol 538-541 ◽  
pp. 2329-2333 ◽  
Author(s):  
Hui Xia Feng ◽  
Jian Li ◽  
Xiao Hong Gao
Keyword(s):  
Mild Steel ◽  
Corrosion Inhibition ◽  
Corrosion Inhibitors ◽  
Steel Corrosion ◽  
Mannich Bases ◽  
Maximum Efficiency ◽  
Tafel Polarization ◽  
Mild Steel Corrosion ◽  
Polarization Studies ◽  
Inhibition Property

The corrosion inhibition behaviour of four selected Mannich bases compounds,namely 3-((N-methyl,N-phenyl)-methyl)2,4-Acetylacetone(MPMAA),3-((N-phenyl)-methyl) 2,4-Acetylacetone (PMAA),3-((N, N-diethyl)-methyl) 2, 4-Acetylacetone(DMAA) and 3-((N, N-methyl)-methyl) 2, 4-Acetylacetone (MMAA) as corrosion inhibitors for mild steel in 1M HCl solutions. Tafel polarization methods were performed to determine the corrosion parameters and inhibition efficiencies. Experimental results showed that PMAA is an excellent inhibitor for mild steel corrosion in 1M HCl solutions; showing a maximum efficiency 92.3% at concentration of 40mg/L. Polarization studies showed that the Mannich bases compounds can be regarded as mixed-type inhibitors and the inhibition efficiency of the four inhibitors followed the order PMAA > MPMAA > DMAA > MMAA. Then scanning electron microscope (SEM)techniques were also employed to examine the mechanism of corrosion inhibition property.

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