Experimental and theoretical assessment of benzopyran compounds as inhibitors to steel corrosion in aggressive acid solution

2022 ◽  
Vol 1249 ◽  
pp. 131641
Author(s):  
Heba E. Hashem ◽  
Ahmed A. Farag ◽  
Eslam A. Mohamed ◽  
Eman M. Azmy
Keyword(s):  
Acid Solution ◽  
Steel Corrosion ◽  
Theoretical Assessment

scholarly journals Inhibition of Mild Steel Corrosion in Hydrochloric Acid Solution by New Coumarin

Materials ◽  
2014 ◽  
Vol 7 (6) ◽  
pp. 4335-4348 ◽  
Author(s):  
Abdul Kadhum ◽  
Abu Mohamad ◽  
Leiqaa Hammed ◽  
Ahmed Al-Amiery ◽  
Ng San ◽  
...  
Keyword(s):  
Hydrochloric Acid ◽  
Acid Solution ◽  
Mild Steel ◽  
Hydrochloric Acid Solution ◽  
Steel Corrosion ◽  
Mild Steel Corrosion

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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