Synergistic Inhibition Effect of Biosynthesized Silver Colloids on Purine Derivatives Inhibitors for Carbon Steel Acid Corrosion

2014 ◽  
Keyword(s):  
Carbon Steel ◽  
Acid Corrosion ◽  
Purine Derivatives ◽  
Silver Colloids ◽  
Inhibition Effect ◽  
Synergistic Inhibition ◽  
Synergistic Inhibition Effect

SYNERGISM OF RARE EARTH Ce(III) ION WITH CYSTEINE AGAINST CORROSION OF P110 CARBON STEEL IN 3% NaCl SOLUTIONS

2017 ◽  
Vol 24 (02) ◽  
pp. 1750024 ◽  
Author(s):  
XIA LIU ◽  
JIANSHU YANG ◽  
YONGPING LIU ◽  
XIANGYUN JI ◽  
YING LU ◽  
...  
Keyword(s):  
Rare Earth ◽  
Carbon Steel ◽  
Inhibition Efficiency ◽  
Inhibition Effect ◽  
Synergistic Inhibition ◽  
Potentiodynamic Polarization Curves ◽  
Ir Reflection ◽  
Ir Reflection Spectra ◽  
Corrosion Inhibition Efficiency ◽  
Synergistic Inhibition Effect

The synergism of CeCl3 (Ce) with cysteine (Cys) on the corrosion of P110 carbon steel in 3% NaCl solutions was investigated by electrochemical methods and surface analysis. The results showed that CeCl3 and cysteine do little to inhibit the corrosion of carbon steel, but the combination of CeCl3 with cysteine has obvious synergistic effect on the corrosion of carbon steel and the corrosion inhibition efficiency was improved significantly. The potentiodynamic polarization curves indicated that the mixture of CeCl3 and cysteine acts as a cathodic inhibitor. Scanning electron microscope (SEM) and Infrared (IR) reflection spectra showed the synergistic inhibition effect was formed by the complexes between rare earth Ce(III) ion and amino acid.

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