Analytical and Bioanalytical Electrochemistry is an international scientific journal, which is published online every 3 months (since 2009), every 2 months (since 2011) and monthly (since 2018) by Center of Excellence in Electrochemistry, University of Tehran
Analytical and Bioanalytical Electrochemistry
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2008-4226
12
1
2020
01
31
New Vitreous Phase as Mild Steel Inhibitors in Hydrochloric Acid
1
20
EN
Corrosion inhibition of mild steel by two new glassy materials correlated with the<br />ternary system Bi<sub>2</sub>O<sub>3</sub>-B<sub>2</sub>O<sub>3</sub>-P<sub>2</sub>O<sub>5</sub> in HCl 1.0 M medium was evaluated using different technics:<br />Gravimetry and electrochemical methods (polarization and electrochemical impedance<br />spectroscopy (EIS)). The results show that the inhibition efficiency depends on the<br />concentration of the two compounds studied (1BHP, 2BHP) and the temperature. The<br />adsorption model obeys to Langmuir isotherm. Thermodynamic parameters were calculated<br />and analysed. The morphology of the steel surface was characterized by scanning electron<br />microscopy (SEM) coupled with EDX.
Glassy phase,Inhibition,Corrosion,Mild steel
https://www.abechem.com/article_245192.html
https://www.abechem.com/article_245192_24a3bd346e00c06f998c06de252d2678.pdf
Analytical and Bioanalytical Electrochemistry is an international scientific journal, which is published online every 3 months (since 2009), every 2 months (since 2011) and monthly (since 2018) by Center of Excellence in Electrochemistry, University of Tehran
Analytical and Bioanalytical Electrochemistry
-
2008-4226
12
1
2020
01
01
Corrosion Inhibitive Behaviour of the Natural Honey in Acidic Medium of A315 Mild and 304 Austenitic Stainless Steels
21
35
EN
The corrosion inhibition performance of the natural honey in H2SO4 acidic medium<br />containing mild steel and stainless steel, using weight loss and electrochemical techniques was<br />investigated. The study involved the determination of the effects of the variation of the<br />concentrations of natural honey inhibitor on the corrosion process. Potentiodynamic<br />polarization for the electrochemical measurements was carried out by using Autolab PGSTAT<br />101 Metrohm potentiostat. Results obtained showed that increase in natural honey<br />concentration (0β10 v/v%) retards the rate of metal dissolution and hence inhibits the corrosion<br />of the metals. And the efficiency of the natural honey inhibitor increased with increased<br />inhibitor concentration. The Tafel plots showed that the natural honey significantly decreased<br />the corrosion potential (Ecorr) and current density (Jcorr); but increased the surface coverage (ππ)<br />and polarisation resistance. Adsorption and thermodynamics studies revealed that the<br />Langmuir adsorption isotherm was obeyed and the large values of βπΊπΊππππππobtained as well as its<br />negative sign implied strong interaction and high efficiency of adsorption. SEM analysis of the<br />metals (before and after corrosion) revealed significant reduction in corrosion rate as the<br />concentrations of natural honey inhibitor increased.
Corrosion,Honey,Inhibitor,Mild steel,Stainless steel
https://www.abechem.com/article_245193.html
https://www.abechem.com/article_245193_d18737f1fe4df4113c75a403d5049dac.pdf