Single and Double Alkyl Chain Quaternary Ammonium Salts as Environment-Friendly Corrosion Inhibitors for a Q235 Steel in 0.5 mol/L H2SO4 Solution

Yangyang Feng,Yunli Cao,Qihui Wang,Yunxiao Feng,Xiaojie Zhou

doi:10.3390/coatings13111847

Single and Double Alkyl Chain Quaternary Ammonium Salts as Environment-Friendly Corrosion Inhibitors for a Q235 Steel in 0.5 mol/L H2SO4 Solution

Yangyang Feng, Yunli Cao + Show 3 more

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https://doi.org/10.3390/coatings13111847

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Journal: Coatings	Publication Date: Oct 27, 2023
License type: CC BY 4.0

Affiliation: Pingdingshan University, Chongqing University of Science and Technology

#Octadecyl Trimethyl Ammonium Chloride #Dioctadecyl Dimethyl Ammonium Chloride + Show 8 more

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Abstract

In this work, the corrosion inhibition effects of octadecyl trimethyl ammonium chloride (OTAC) and dioctadecyl dimethyl ammonium chloride (DDAC) on Q235 steel in a 0.5 mol/L H2SO4 solution are studied. The results of the electrochemical experiment, contact angle measurement, and scanning electron microscopy indicate that the two ionic liquids belong to mixed-type corrosion inhibitors with good anti-corrosion performance. Additionally, OTAC has a better anti-corrosion ability than DDAC, implying that the steric hindrance effect of the double alkyl chain is not conducive to the adsorption of DDAC on the electrode surface.

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