scholarly journals Corrosion Inhibition of Low Carbon Steel in 1 M HCl Solution by Cephalexin Monohydrate Drug and Synergistic Iodide Additives

2020 ◽  
Vol 11 (1) ◽  
pp. 8550-8563
Keyword(s):  
Carbon Steel ◽  
Mixed Type ◽  
Inhibition Efficiency ◽  
Low Carbon Steel ◽  
Drug Dose ◽  
Outcome Data ◽  
Low Carbon ◽  
Corrosion Performance ◽  
Ac Impedance Spectroscopy ◽  
Hcl Solution

The effect of Cephalexin monohydrate drug on the corrosion performance of low carbon steel (LCS) in 1 M HCl solution has been examined by weight reduction (WR), potentiodynamic polarization (PP) and AC impedance spectroscopy (EIS) tests. The inhibition efficiency (IE) raised with increasing the cephalexin monohydrate drug dose but lowered with higher temperatures. The adsorption of the Cephalexin monohydrate drug established to follow Temkin isotherm. The PP tests designated that the cephalexin monohydrate drug is of mixed type. Synergism among iodide ion and cephalexin monohydrate drug was suggested. The outcome data gotten from the three altered tests were in excellent agreement. Theoretical relationships have been utilized to examine the influence of molecular structure on IE of the Cephalexin monohydrate drug.

Evaluation of 1‐Hexadecylbenzimidazole as a Corrosion Inhibitor on Low Carbon Steel 15 % HCl Solution Interface

2021 ◽  
Vol 6 (13) ◽  
pp. 3199-3217
Author(s):  
Nurudeen A. Odewunmi ◽  
Mohammad A. J. Mazumder ◽  
Shaikh A. Ali
Keyword(s):  
Carbon Steel ◽  
Corrosion Inhibitor ◽  
Low Carbon Steel ◽  
Low Carbon ◽  
Solution Interface ◽  
Hcl Solution

Phenylcoumarin Glucoside as a Natural Inhibitor in the Protection of Low Carbon Steel Against Corrosion

MRS Advances ◽  
2017 ◽  
Vol 2 (62) ◽  
pp. 3909-3915
Author(s):  
Héctor M. Barbosa Cásarez ◽  
Araceli Espinoza Vázquez ◽  
Francisco J. Rodríguez-Gomez
Keyword(s):  
Carbon Steel ◽  
Inhibition Efficiency ◽  
Electrochemical Impedance ◽  
Electrochemical Techniques ◽  
Low Carbon Steel ◽  
Steel Corrosion ◽  
Low Carbon ◽  
Low Concentrations ◽  
Natural Inhibitor ◽  
Polarization Studies

AbstractPhenylcoumarin glucoside (4-PC) is a compound extracted from the plant Hintona latiflora and was studied as inhibitor for AISI 1018 steel corrosion in 3% NaCl solution using potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) techniques, which may find application as eco-friendly corrosion inhibitors. The 4-PC provides inhibitor properties that protect AISI 1018 low carbon steel against corrosion at low concentrations (5 ppm) obtained by EIS. Polarization studies showed that the inhibitor was of mixed type. The inhibition efficiency by the two electrochemical techniques shows similar results. The inhibitor adsorption was demonstrated to be a combined process (physisorption and chemisorption) according to the Langmuir isotherm.

scholarly journals Environmental Behavior of Low Carbon Steel Produced by a Wire Arc Additive Manufacturing Process

Metals ◽  
2019 ◽  
Vol 9 (8) ◽  
pp. 888 ◽  
Author(s):  
Ron ◽  
Levy ◽  
Dolev ◽  
Leon ◽  
Shirizly ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Additive Manufacturing ◽  
Carbon Steel ◽  
Stress Corrosion ◽  
Environmental Behavior ◽  
Low Carbon Steel ◽  
General Corrosion ◽  
Low Carbon ◽  
Corrosion Performance ◽  
Wire Arc Additive Manufacturing

: Current additive manufacturing (AM) processes are mainly focused on powder bed technologies, such as electron beam melting (EBM) and selective laser melting (SLM). However, the main disadvantages of such techniques are related to the high cost of metal powder, the degree of energy consumption, and the sizes of the components, that are limited by the size of the printing cell. The aim of the present study was to evaluate the environmental behavior of low carbon steel (ER70S-6) produced by a relatively inexpensive AM process using wire feed arc welding. The mechanical properties were examined by tension testing and hardness measurements, while microstructure was assessed by scanning electron microscopy and X-ray diffraction analysis. General corrosion performance was evaluated by salt spray testing, immersion testing, potentiodynamic polarization analysis, and electrochemical impedance spectroscopy. Stress corrosion performance was characterized in terms of slow strain rate testing (SSRT). All corrosion tests were carried out in 3.5% NaCl solution at room temperature. The results indicated that the general corrosion resistance of wire arc additive manufacturing (WAAM) samples were quite similar to those of the counterpart ST-37 steel and the stress corrosion resistance of both alloys was adequate. Altogether, it was clearly evident that the WAAM process did not encounter any deterioration in corrosion performance compared to its conventional wrought alloy counterpart.

Performance of Synthesized Acetone Based Inhibitor on Low Carbon Steel Corrosion in 1 M HCl Solution

2019 ◽  
Vol 3 (1) ◽  
pp. 263-276 ◽  
Author(s):  
Hameed B. Mahood ◽  
Asaad H. Sayer ◽  
Athraa H. Mekky ◽  
Anees A. Khadom
Keyword(s):  
Carbon Steel ◽  
Low Carbon Steel ◽  
Steel Corrosion ◽  
Low Carbon ◽  
Hcl Solution

A new corrosion inhibitor for protection of low carbon steel in HCl solution

2015 ◽  
Vol 98 ◽  
pp. 223-232 ◽  
Author(s):  
Murat Farsak ◽  
Hülya Keleş ◽  
Mustafa Keleş
Keyword(s):  
Carbon Steel ◽  
Corrosion Inhibitor ◽  
Low Carbon Steel ◽  
Low Carbon ◽  
Hcl Solution

scholarly journals Corrosion inhibition and statistical data of low carbon steel in HCl media by admixed organic compounds

2021 ◽  
Vol 2070 (1) ◽  
pp. 012149
Author(s):  
Roland Tolulope Loto ◽  
Cleophas Akintoye Loto ◽  
Richard Leramo ◽  
Babatunde Oyebade
Keyword(s):  
Carbon Steel ◽  
Organic Compounds ◽  
Corrosion Inhibition ◽  
Exposure Time ◽  
Inhibition Efficiency ◽  
Low Carbon Steel ◽  
Calculated Data ◽  
Carbon Steels ◽  
Low Carbon ◽  
Inhibitor Concentration

Abstract Corrosion inhibition of carbon steels with organic compounds exhibiting effective corrosion inhibition is an on-going research. The corrosion inhibition of low carbon steel in 1M HCl solution by the combined admixture of vanillin and benzonitrile (VBN), and salvia officinalis with lavendulan officinalis (SLV) was studied by weight loss method. Results obtained show that VBN and SLV performed effectively with maximum inhibition efficiency 91.03% at 1.5% VBN concentration and 97.89% at 5% SLV concentration. The inhibition efficiency of VBN increased with concentration but decreased with exposure time compared to the values obtained for SLV which showed non-dependence on concentration and exposure time after 1% SLV concentration. Correlation plots of inhibition efficiency versus inhibitor concentration show VBN to be more concentration dependent in performance. Calculated data for standard deviation shows the degree of variation from mean values for both compounds is significant at low inhibitor concentration due to time dependence action. Statistical analysis through ANOVA shows inhibitor concentration overwhelmingly influences the inhibition performance of the despite even though exposure time is statistically relevant to minimal degree.

scholarly journals Evaluation of Inhibitive Performance of Acidic Extract of Eichornia Crassipeson Corrosion of Low Carbon Steel in 1M Sulphuric Acid Solution

2018 ◽  
Vol 3 (1) ◽  
Author(s):  
Sidikat I Kuye ◽  
Emmanuel Amaechi ◽  
Nurudeen O Adekunle ◽  
Olayide R Adetunji ◽  
Alex F Adisa ◽  
...  
Keyword(s):  
Carbon Steel ◽  
Corrosion Rate ◽  
Acid Solution ◽  
Sulphuric Acid ◽  
Eichhornia Crassipes ◽  
Inhibition Efficiency ◽  
Low Carbon Steel ◽  
Gravimetric Method ◽  
Sulphuric Acid Solution ◽  
Low Carbon

Corrosion inhibition potential of Eichhornia crassipes extract on low carbon steel in 1 M sulphuric acid solution was investigated using gravimetric method and corrosion rate. The experiment was carried out for 3 hours at different concentration of Eichhornia crassipes extract and temperatures of 26.6°C, 40°C and 60°C. Arrhenius and improved Arrhenius equations were used to determine the thermodynamics properties of the reaction while the nature of the reaction was proposed by adsorption isotherms. The results showed that corrosion rate decreased in the presence of the extract except in 60oC. Inhibition efficiency also increased with extract concentration with the highest (82%) occurring at room temperature and 5% concentration. Inhibition efficiency decreased with increase in temperature with almost no inhibition at 60oC, this is associated with physisorption. Activation energy () and activation enthalpy () both had positive values and they increased in the presence of Eichhornia crassipes extract, those for inhibited solution were higher than those for uninhibited solution, these can also be attributed to physisorption. Inhibition  reaction obeyed Langmuir adsorption isotherm. Gibbs free energy () calculated for the reaction is -8.509 to -11.767 kJ mol-1.

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