Performance evaluation of triethanolamine as corrosion inhibitor for magnesium alloy in 3.5 wt% NaCl solution

RSC Advances ◽  
2016 ◽  
Vol 6 (115) ◽  
pp. 113967-113980 ◽  
Author(s):  
Wei Shang ◽  
Chubin He ◽  
Yuqing Wen ◽  
Yuanyuan Wang ◽  
Zhe Zhang
Keyword(s):  
Performance Evaluation ◽  
Electrochemical Impedance Spectroscopy ◽  
Magnesium Alloy ◽  
Quantum Chemical ◽  
Electrochemical Impedance ◽  
Nacl Solution ◽  
Corrosion Performance ◽  
Chemical Methods ◽  
Quantum Chemical Methods ◽  
Immersion Experiment

The anti-corrosion performance of triethanolamine with Mg alloy in 3.5 wt% NaCl solution has been studied by immersion experiment, electrochemical impedance spectroscopy, potentiodynamic polarization, surface analysis, and quantum chemical methods.

The corrosion inhibition effect of aryl pyrazolo pyridines on copper in hydrochloric acid system: computational and electrochemical studies

RSC Advances ◽  
2015 ◽  
Vol 5 (52) ◽  
pp. 41923-41933 ◽  
Author(s):  
Sudheer Sudheer ◽  
M. A. Quraishi
Keyword(s):  
Hydrochloric Acid ◽  
Potentiodynamic Polarization ◽  
Quantum Chemical ◽  
Electrochemical Impedance ◽  
Electrochemical Studies ◽  
Pyridine Derivatives ◽  
Acid System ◽  
Chemical Methods ◽  
Inhibition Effect ◽  
Quantum Chemical Methods

The inhibition effect of three aryl pyrazole pyridine derivatives (APPs) against the corrosion of copper in 0.5 M HCl has been investigated by electrochemical impedance, potentiodynamic polarization measurements and quantum chemical methods.

scholarly journals Effect of the Diesel, Inhibitor, and CO2Additions on the Corrosion Performance of 1018 Carbon Steel in 3% NaCl Solution

2014 ◽  
Vol 2014 ◽  
pp. 1-10 ◽  
Author(s):  
J. Porcayo-Calderon ◽  
M. Casales-Diaz ◽  
L. M. Rivera-Grau ◽  
D. M. Ortega-Toledo ◽  
J. A. Ascencio-Gutierrez ◽  
...  
Keyword(s):  
Electrochemical Impedance Spectroscopy ◽  
Carbon Steel ◽  
Impedance Spectroscopy ◽  
Steel Surface ◽  
Adsorption Process ◽  
Electrochemical Impedance ◽  
Water Soluble ◽  
Nacl Solution ◽  
Corrosion Performance ◽  
Soluble Fractions

In order to determine the diesel contribution in the coadsorption process of the oil-soluble inhibitors, electrochemical impedance spectroscopy measurements have been carried out to study the performance of oil-soluble inhibitors in both presence and absence of diesel and CO2. The results showed that the presence of the oil phase provides some protection to the steel because the water-soluble fractions are capable of being adsorbed on the steel surface thereby reducing the corrosion rate. The oily phase does not contribute to the adsorption process of the inhibitor because the inhibitor is absorbed into the water-soluble fractions. The oil-soluble inhibitors are effective only when the solution is saturated with CO2. CO2saturation causes a decrease in the pH of the solution causing both an increase of the inhibitor solubility and a better dispersion of the inhibitor into the electrolyte.

Microstructure and Corrosion Resistance of Black Microarc Oxidation Ceramic Coatings on Magnesium Alloy

2012 ◽  
Vol 581-582 ◽  
pp. 427-430
Author(s):  
Sheng Xue Yu ◽  
Rui Jun Zhang ◽  
Qiao Yan Lv
Keyword(s):  
Aqueous Solution ◽  
Magnesium Alloy ◽  
Electrochemical Impedance ◽  
Microarc Oxidation ◽  
Ceramic Coatings ◽  
Nacl Solution ◽  
Corrosion Resistant ◽  
Before And After ◽  
Micro Arc Oxidation ◽  
Immersion Experiment

Black micro-arc oxidation (MAO) ceramic coatings were prepared on magnesium alloy in a silicate electrolyte; SEM, EDS and XRD were tested to analyze surface morphology, chemical composition and phase composition of ceramic coatings, Corrosion resistant in 3.5％ NaCl aqueous solution of magnesium alloy before and after MAO treatment was evaluated by polarization curves and electrochemical impedance spectroscopy (EIS); the weight loss of magnesium alloy with black MAO ceramic coatings in 3.5％ NaCl aqueous solution was studied through immersion experiment. The results indicated that, the black MAO ceramic coatings was composed by Mg、Al、Si、Cu and O; black MAO ceramic coatings could protect magnesium alloy substrate effectively; the corrosion resistant of black MAO ceramic coatings in neutral 3.5% NaCl solution was favorable.

scholarly journals Energetics of LOHC: Structure-Property Relationships from Network of Thermochemical Experiments and in Silico Methods

Hydrogen ◽  
2021 ◽  
Vol 2 (1) ◽  
pp. 101-121
Author(s):  
Sergey P. Verevkin ◽  
Vladimir N. Emel’yanenko ◽  
Riko Siewert ◽  
Aleksey A. Pimerzin
Keyword(s):  
In Silico ◽  
Quantum Chemical ◽  
Structure Property ◽  
Chemical Methods ◽  
Key Technology ◽  
Structure Property Relationships ◽  
Quantum Chemical Methods ◽  
Dehydrogenation Reactions ◽  
Storage Technologies ◽  
In Silico Methods

The storage of hydrogen is the key technology for a sustainable future. We developed an in silico procedure, which is based on the combination of experimental and quantum-chemical methods. This method was used to evaluate energetic parameters for hydrogenation/dehydrogenation reactions of various pyrazine derivatives as a seminal liquid organic hydrogen carriers (LOHC), that are involved in the hydrogen storage technologies. With this in silico tool, the tempo of the reliable search for suitable LOHC candidates will accelerate dramatically, leading to the design and development of efficient materials for various niche applications.

Reactions between microhydrated superoxide anions and formic acid

2017 ◽  
Vol 19 (34) ◽  
pp. 23176-23186 ◽  
Author(s):  
Mauritz Johan Ryding ◽  
Israel Fernández ◽  
Einar Uggerud
Keyword(s):  
Formic Acid ◽  
Quantum Chemical ◽  
Superoxide Anion ◽  
Water Clusters ◽  
Superoxide Anions ◽  
Chemical Methods ◽  
Quantum Chemical Methods

Reactions between water clusters containing the superoxide anion, O2˙−(H2O)n (n = 0–4), and formic acid, HCO2H, were studied experimentally in vacuo and modelled using quantum chemical methods.

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