Electrochemical Study on the Inhibition Effect of Phenanthroline and Its Cobalt Complex as Corrosion Inhibitors for Mild Steel

2015 ◽  
Vol 24 (9) ◽  
pp. 3599-3606 ◽  
Author(s):  
Xia Liu ◽  
Peter C. Okafor ◽  
Bin Jiang ◽  
Hongxiang Hu ◽  
Yugui Zheng
Keyword(s):  
Mild Steel ◽  
Corrosion Inhibitors ◽  
Cobalt Complex ◽  
Electrochemical Study ◽  
Inhibition Effect

The Effect of Corrosion Inhibitor in Hydrofluoric Acid Medium

2013 ◽  
Vol 750-752 ◽  
pp. 2258-2262 ◽  
Author(s):  
Wei Ming Wu ◽  
Ding Li ◽  
Hai Yan Du
Keyword(s):  
Weight Loss ◽  
Corrosion Resistance ◽  
Electrochemical Impedance Spectroscopy ◽  
Impedance Spectroscopy ◽  
Mild Steel ◽  
Hydrofluoric Acid ◽  
Corrosion Inhibitors ◽  
Electrochemical Impedance ◽  
Potassium Thiocyanate ◽  
Inhibition Effect

The experiments were done to find some good corrosion inhibitors for mild steel in 5% HF solution by the method of weight loss and electrochemistry including polarization curves and electrochemical impedance spectroscopy (EIS). Results show that the thiourea, potassium thiocyanate, and hexamethylenetetramine have good inhibition effect for mild steel in 5% HF solution, especially potassium thiocyanate and thiourea. Their corrosion resistance was greatly enhanced in the presence of tested inhibitor. Thiourea is an anodic type inhibitor and its inhibition efficiencies up to 99.88% can be obtained. Equivalent circuit of the investigated system was suggested.

Electrochemical behavior of phenylalanine and its cobalt complex as corrosion inhibitors for mild steel in H2SO4

2015 ◽  
Vol 88 (2) ◽  
pp. 350-355
Author(s):  
X. Liu ◽  
Y. Lu ◽  
Y. S. Yang ◽  
H. X. Hu ◽  
Y. G. Zheng
Keyword(s):  
Mild Steel ◽  
Electrochemical Behavior ◽  
Corrosion Inhibitors ◽  
Cobalt Complex

An Electrochemical Study of Heteropoly Molybdates as Cooling Water Corrosion Inhibitors

CORROSION ◽  
1972 ◽  
Vol 28 (8) ◽  
pp. 299-306 ◽  
Author(s):  
A. WEISSTUCH ◽  
C E. SCHELL
Keyword(s):  
Mild Steel ◽  
Corrosion Inhibitors ◽  
Electrochemical Techniques ◽  
Cooling Water ◽  
Electrochemical Study ◽  
Low Level ◽  
High Concentrations ◽  
High Level ◽  
Steel Electrodes

Abstract The utility of heteropoly molybdate compounds as cooling water corrosion inhibitors for mild steel was investigated by various electrochemical techniques. It was shown that high concentrations of heteropoly molybdates are required to passivate mild steel electrodes. The breakdown of passivity was studied as a function of inhibitor volume and concentration of aggressive anions. Various approaches for the economic utilization of heteropoly molybdates are described, including high level pretreatment-low level maintenance level regimes and formulation with polyphosphates and zinc.

scholarly journals Inhibition effect of some commercial corrosion inhibitors on mild steel in 7.0 M phosphoric acid

2020 ◽  
Vol 65 (1) ◽  
pp. 17-26
Author(s):  
Julieta Daniela Chelaru ◽  
◽  
Mihaela Ciobra ◽  
Liana Maria Muresan ◽  
◽  
...  
Keyword(s):  
Phosphoric Acid ◽  
Mild Steel ◽  
Corrosion Inhibitors ◽  
Inhibition Effect

Inhibition effect of opuntia stem extract on corrosion of mild steel: a quantum computational assisted electrochemical study to determine the most effective components in inhibition

2017 ◽  
Vol 53 (3) ◽  
pp. 560-572 ◽  
Author(s):  
Ebrahim Honarmand ◽  
Hossein Mostaanzadeh ◽  
Mohammad Hassan Motaghedifard ◽  
Mojtaba Hadi ◽  
Maryam Khayadkashani
Keyword(s):  
Mild Steel ◽  
Electrochemical Study ◽  
Inhibition Effect ◽  
Effective Components ◽  
Stem Extract

scholarly journals Isomers of Poly Aminophenol: Chemical Synthesis, Characterization, and Its Corrosion Protection Aspect on Mild Steel in 1 M HCl

2014 ◽  
Vol 2014 ◽  
pp. 1-11 ◽  
Author(s):  
G. Thenmozhi ◽  
P. Arockiasamy ◽  
R. Jaya Santhi
Keyword(s):  
Mild Steel ◽  
Corrosion Inhibitors ◽  
Inhibition Efficiency ◽  
Electrochemical Impedance ◽  
Electrochemical Techniques ◽  
Ammonium Persulfate ◽  
Inhibition Effect ◽  
Maximum Inhibition ◽  
Ft Ir ◽  
Polarization Studies

The oxidative chemical polymerizations of three isomers of aminophenol,ortho,meta, andpara(PoAP, PmAP, and PpAP), were performed in aqueous HCl using ammonium persulfate as an oxidant at 0–3°C. The synthesized polymers were characterized by employing elemental analysis, GPC, UV-VIS-NIR, FT-IR, XRD, and TGA. The corrosion inhibition effect of these three polymers on mild steel in 1 M HCl solution was studied by using electrochemical techniques such as potentiodynamic polarization and electrochemical impedance spectroscopy. These measurements reveal that the inhibition efficiency obtained by these polymers increased by increasing their concentration. The inhibition efficiency follows the order PpAP > PoAP > PmAP. The results further revealed that PpAP at a concentration of 250 mg/L furnishes maximum inhibition efficiency (96.5%). Polarization studies indicated that these three polymers act as the mixed type corrosion inhibitors.

scholarly journals Corrosion Inhibition Effect of Dicycloimine Hydrochloride (DCI) on Mild Steel in 1M HCl

2010 ◽  
Vol 7 (1) ◽  
pp. 325-330 ◽  
Author(s):  
R. Rajalakshmi ◽  
S. Subhashini
Keyword(s):  
Mild Steel ◽  
Corrosion Inhibitors ◽  
Inhibition Efficiency ◽  
Effective Inhibitor ◽  
Electrochemical Polarization ◽  
Inhibition Effect ◽  
Weight Loss Method ◽  
Polarization Studies ◽  
Loss Method ◽  
Control Corrosion

Addition of corrosion inhibitors is one of the widely used methods to control corrosion. In this work, an attempt has been made to explore the possibility of using dicycloimine hydrochloride (DCI) as an inhibitor on mild steel in 1 M HCl. The inhibition efficiency of DCI has been evaluated by conventional weight loss method and electrochemical polarization studies. Experimental results are fitted to various adsorption isotherms. Thermodynamic parameters have also been studied from temperature studies. The results reveal that DCI acts as an effective inhibitor (around 90% of IE) in HCl media.

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