Study of N-benzylidene derivatives synthesized as corrosion inhibitors for copper in HCl solution

RSC Advances ◽  
2015 ◽  
Vol 5 (30) ◽  
pp. 23357-23366 ◽  
Author(s):  
Mehdi Shabani-Nooshabadi ◽  
Mohsen Behpour ◽  
Faezeh Sadat Razavi ◽  
Masood Hamadanian ◽  
Vajihe Nejadshafiee
Keyword(s):  
Corrosion Inhibition ◽  
Potentiodynamic Polarization ◽  
Corrosion Inhibitors ◽  
Electrochemical Methods ◽  
Polarization Measurements ◽  
Benzylidene Derivative ◽  
Hcl Solution

Corrosion inhibition of the two N-benzylidene derivative compounds, as corrosion inhibitors for copper in HCl 6.0 M have been studied by electrochemical methods such as potentiodynamic polarization measurements and EIS.

scholarly journals Study the corrosion inhibition of mix of caffeine and iodua for CT3 steel in 1M HCl solution by electrochemical methods

2017 ◽  
Vol 33 (3) ◽  
Author(s):  
Truong Thao
Keyword(s):  
Carbon Steel ◽  
Corrosion Inhibition ◽  
Inhibition Efficiency ◽  
Electrochemical Methods ◽  
Anodic Reaction ◽  
Mild Carbon Steel ◽  
Current Densities ◽  
Hcl Solution ◽  
Surface Observations

Abstract: Corrosion inhibition of mild carbon steel, CT3,  in 1.0 M HCl solution by iodide  (with different concentrations, from 0.1g/l to 5.0g/l), mix of caffeine and iodide was investigated by electrochemical methods and micro surface observations (SEM). Experiment result showed that: (1) as the concentration of iodide increases, the inhibition efficiency increases;  Iodide acts as a mix – type inhibitor but inhibits anodic reaction is predominant. (2) Mix of 1.0 g/l iodide ang caffeine acts as a typical mix – type inhibitor. the current densities of both of anodic and cathode are decline when concentration of caffeine is 1.0 g/l or more. Inhibition efficiency max is approximately 96% at concentration of 5.0 g/l caffeine, the inhibition efficiency maintained relatively stable within 5 days.  

scholarly journals Corrosion Inhibition of Titanium in Acidic Media Containing Fluoride with Bixin

2009 ◽  
Vol 6 (4) ◽  
pp. 975-978 ◽  
Author(s):  
Jinendra Singh Chauhan ◽  
D. K. Gupta
Keyword(s):  
Corrosion Inhibitor ◽  
Sulphuric Acid ◽  
Corrosion Inhibition ◽  
Electrochemical Methods ◽  
Great Efficiency ◽  
Acidic Media ◽  
Temperature Range ◽  
Hcl Solution

The bixin in acidic media were tested for corrosion inhibition of Ti in 0.5 N sulphuric acid and 0.1 N HCl solution at 30 to 40 °C temperature range by electrochemical methods. It reveals that bixin works as a corrosion inhibitor in halide media and protect the metals from the corrosion with great efficiency

Corrosion Inhibition of Sodium Hexametaphosphate for Carbon Steel in KCl Solution

2014 ◽  
Vol 886 ◽  
pp. 12-15
Author(s):  
Bin Huang ◽  
Kang Quan Qiao ◽  
Yi Shun Cui
Keyword(s):  
Weight Loss ◽  
Electron Microscope ◽  
Carbon Steel ◽  
Corrosion Inhibition ◽  
Potentiodynamic Polarization ◽  
Polarization Curves ◽  
Sodium Hexametaphosphate ◽  
Anodic Process ◽  
Polarization Measurements ◽  
Potentiodynamic Polarization Curves

The influence of sodium hexametaPhosphate on the corrosion of carbon steel in 0.5 mol•L-1 KCl solution at 25 °C was investigated using weight loss measurements, potentiodynamic polarization curves and Scan electron microscope (SEM). The obtained results show that sodium hexametaPhosphate is an excellent inhibitor and the inhibition efficiencies exceed 87 %. The polarization measurements reveal that sodium hexametaPhosphate is an inhibitor mainly controlled by anodic process.

Corrosion inhibition effect of spiropyrimidinethiones on mild steel in 15% HCl solution: insight from electrochemical and quantum studies

RSC Advances ◽  
2015 ◽  
Vol 5 (87) ◽  
pp. 70832-70848 ◽  
Author(s):  
M. Yadav ◽  
R. R. Sinha ◽  
Sumit Kumar ◽  
T. K. Sarkar
Keyword(s):  
Weight Loss ◽  
Mild Steel ◽  
Corrosion Inhibition ◽  
Electrochemical Methods ◽  
Inhibition Effect ◽  
Hcl Solution

The effect of synthesized spiropyrimidinethiones on the corrosion of mild steel in 15% HCl solution was investigated by using weight loss and electrochemical methods.

scholarly journals Evaluation of extracellular polymeric substances extracted from waste activated sludge as a renewable corrosion inhibitor

PeerJ ◽  
2019 ◽  
Vol 7 ◽  
pp. e7193 ◽  
Author(s):  
Liew Chien Go ◽  
William Holmes ◽  
Dilip Depan ◽  
Rafael Hernandez
Keyword(s):  
Activated Sludge ◽  
Corrosion Inhibitor ◽  
Corrosion Inhibition ◽  
Potentiodynamic Polarization ◽  
Corrosion Inhibitors ◽  
Extracellular Polymeric Substances ◽  
Value Added ◽  
Total Solid ◽  
Waste Activated Sludge ◽  
Inhibition Performance

Background Waste activated sludge (WAS) has recently gained attention as a feedstock for resource recovery. The aim of this study is to investigate the corrosion inhibition efficiencies of extracellular polymeric substances (EPS) extracted from WAS. Methods The studied corrosion inhibitors were tested with carbon steel in 3.64% NaCl saturated with CO2 at 25 °C, which is the typical oilfield environment. They were first prepared by EPS extraction (heating at 80 °C), followed by centrifugation for solid and liquid separation, then the supernatant was freeze-thawed five times for sterilization of microorganisms in WAS to terminate metabolic activities in the test inhibitors to ensure consistency in corrosion inhibition. The EPS mixture (supernatant) was then deemed as the test corrosion inhibitor. The inhibition performance was determined using potentiodynamic polarization scans. Results Waste activated sludge alone showed unsatisfactory inhibition. However, EPS extracted from WAS showed an optimum inhibition of approximately 80% with 1,000 mg/L of inhibitor. The average total solid (TS) and EPS contents of the WAS were 7,330 mg TS/L WAS and 110 mg EPS/g TS, respectively. Three sets of extracted EPS were scanned with fourier-transform infrared spectroscopy (FTIR) and showed almost overlapping curves, yielding the consistent inhibition performance. Discussion The potentiodynamic polarization results indicated that EPS acts as a mixed-type inhibitor which inhibits corrosion on both anode and cathode sites of metal surfaces. Based on the FTIR results, it was assumed that major chemical groups O–H, N–H, C–N, C=O, and C–H contributed to the inhibition by adsorbing on the metal surface, forming a biofilm that acts as a protective barrier to isolate the metal from its corrosive environment. Results show that WAS EPS corrosion inhibitors have inhibition performance comparable to commercial products, signifying their potential in commercialization. This corrosion inhibitor is renewable, biodegradable, non-toxic, and free from heavy metal, making it a superior green corrosion inhibitor candidate. Additionally, turning biomass into value-added product can be beneficial to the environment and, in this case, deriving new materials from WAS could also transform the economics of wastewater treatment operations.

An electrochemical investigation of azole derivative on aluminum in 0.25 M HCl solution using EN and EIS techniques

2017 ◽  
Vol 64 (1) ◽  
pp. 10-22 ◽  
Author(s):  
Bahram Ramezanzadeh ◽  
Milad Mehdipour ◽  
S.Y. Arman ◽  
M. Ramezanzadeh
Keyword(s):  
Corrosion Inhibition ◽  
Potentiodynamic Polarization ◽  
Design Methodology ◽  
Inhibition Efficiency ◽  
Electrochemical Impedance ◽  
Electrochemical Techniques ◽  
Content Type ◽  
Corrosion Inhibition Efficiency ◽  
Azole Derivative ◽  
Hcl Solution

Purpose This study attempts to investigate corrosion inhibition properties of 1H-benzimidazole (B) and 1H-benzotriazole (BTA) on aluminum in 0.25 M HCl solution at different concentrations. Design/methodology/approach To this end, electrochemical techniques including electrochemical noise (EN), electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization were used. Findings Results showed a greater corrosion inhibition efficiency of BTA than B on aluminum in HCl solution. BTA showed greater tendency to adsorption on the metal surface than B because of the inclusion of three nitrogen atoms. Originality/value The novelty of this work is comparing EN data with EIS and potentiodynamic polarization parameters.

scholarly journals Evaluation of Corrosion Inhibition of Mild Steel in 1 M Hydrochloric Acid Solution byMollugo cerviana

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
P. Arockiasamy ◽  
X. Queen Rosary Sheela ◽  
G. Thenmozhi ◽  
M. Franco ◽  
J. Wilson Sahayaraj ◽  
...  
Keyword(s):  
Mild Steel ◽  
Corrosion Inhibition ◽  
Plant Extract ◽  
Potentiodynamic Polarization ◽  
Electrochemical Impedance ◽  
Langmuir Adsorption ◽  
Inhibition Concentration ◽  
Corrosion Inhibition Efficiency ◽  
Hcl Solution ◽  
Mixed Type Inhibitor

The inhibiting effect of methanolic extract ofMollugo cervianaplant on the corrosion of mild steel in 1 M HCl solution has been investigated by different techniques like potentiodynamic polarization, electrochemical impedance spectroscopy, and weight loss methods for five different concentrations of plant extract ranging from 25 to 1000 mg/L. The results indicated that the corrosion inhibition efficiency increased on increasing plant extract concentration till 500 mg/L and decreased on further increasing concentration. The extract was a mixed type inhibitor with the optimum inhibition concentration of 500 mg/L in potentiodynamic polarization. The adsorption of the plant extract on the mild steel surface was found to obey Langmuir adsorption isotherm. Surface analysis was also carried out to find out the surface morphology of the mild steel in the presence and in the absence of the inhibitor to find out its efficiency. The obtained results showed that theMollugo cervianaextract acts as a good inhibitor for the corrosion of mild steel in 1 M HCl solution.

Green Schiff's bases as corrosion inhibitors for mild steel in 1 M HCl solution: experimental and theoretical approach

RSC Advances ◽  
2016 ◽  
Vol 6 (104) ◽  
pp. 102076-102087 ◽  
Author(s):  
Neeraj Kumar Gupta ◽  
M. A. Quraishi ◽  
Chandrabhan Verma ◽  
A. K. Mukherjee
Keyword(s):  
Weight Loss ◽  
Mild Steel ◽  
Quantum Chemical Calculations ◽  
Corrosion Inhibition ◽  
Schiff Bases ◽  
Theoretical Approach ◽  
Quantum Chemical ◽  
Corrosion Inhibitors ◽  
Electrochemical Studies ◽  
Hcl Solution

Three cysteine based Schiff bases were synthesized and their corrosion inhibition properties on mild steel in 1 M HCl solution were evaluated using weight loss and electrochemical studies and quantum chemical calculations.

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