Electrochemical and theoretical study of the inhibition effect of two synthesized thiosemicarbazide derivatives on carbon steel corrosion in hydrochloric acid solution

RSC Advances ◽  
2015 ◽  
Vol 5 (27) ◽  
pp. 20838-20847 ◽  
Author(s):  
Shirin Shahabi ◽  
Parviz Norouzi ◽  
Mohammad Reza Ganjali
Keyword(s):  
Carbon Steel ◽  
Hydrochloric Acid ◽  
Acid Solution ◽  
Hydrochloric Acid Solution ◽  
Theoretical Study ◽  
Steel Corrosion ◽  
Inhibition Effect ◽  
Thiosemicarbazide Derivatives

The inhibition effect of two synthesized thiosemicarbazide derivatives on carbon steel corrosion was studied experimentally (FFT-Voltammetry) and theoretically.

INHIBITION EFFECT OF DODECYLAMINE ON CARBON STEEL CORROSION IN HYDROCHLORIC ACID SOLUTION

2012 ◽  
Vol 19 (06) ◽  
pp. 1250060
Author(s):  
ZHENYU CHEN ◽  
LING HUANG ◽  
YUBING QIU ◽  
XINGPENG GUO
Keyword(s):  
Carbon Steel ◽  
Hydrochloric Acid ◽  
Acid Solution ◽  
Hydrochloric Acid Solution ◽  
Steel Surface ◽  
Steel Corrosion ◽  
Inhibition Mechanism ◽  
Polar Group ◽  
Exponential Factor ◽  
Carbon Steel Surface

Dodecylamine spontaneously adsorbs on carbon steel via its polar group (-NH2) in hydrochloric acid solution. Furthermore, it forms a monolayer film on carbon steel surface. The inhibition mechanism of dodecylamine for carbon steel is geometric blocking effect. The adsorption of dodecylamine on carbon steel surface follows Arrhenius equation. The adsorption slightly increases activated energy, but greatly reduces pre-exponential factor value. Atomic force microscopy force curves indicate that at the area without adsorbed dodecylamine, no obvious adhere force occurs. At the area with adsorbed dodecylamine, however, an average 1.3 nN adhere force is observed.

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