TY  - EJOU
AU  - Wang, Yun 
AU  - Wang, Tiantian 
AU  - Wang, Bei 
AU  - Chang, Wei 
AU  - Cao, Jiangli 
AU  - Hu, Lihua 
AU  - Lu, Minxu 
AU  - Zhang, Lei 

TI  - Performance Evaluation of a Novel and Effective Water-Soluble Aldehydes as Corrosion Inhibitor for Carbon Steel in Aggressive Hydrochloric Medium
T2  - Journal of Renewable Materials

PY  - 2022
VL  - 10
IS  - 2
SN  - 2164-6341

AB  - A novel and effective water-soluble aldehydes (<i>β</i>-HA) as corrosion inhibitor was synthesized for N80 steel corrosion in 15% HCl solution, and the corrosion inhibition performance was evaluated by using weight loss, electrochemical measurements, scanning electron microscope (SEM), quantum chemical calculation and molecular
dynamics simulation (MDS). The results show that synthesized <i>β</i>-HA showed excellent corrosion performance
compared with MHB and PE for carbon steel in 15% HCl solution compared with MHB and PE, and the inhibition efficiency increased with increasing concentration of the inhibitor. The inhibition efficiency of <i>β</i>-HA at
8 mmol/L reached the maximum value 94.08%. The inhibitor acted as mixed-type inhibitor via blocking both
the anodic and cathodic reaction. The adsorption of inhibitors on N80 steel surface obeyed Langmuir adsorption
isotherm, and the process contained chemisorption and physisorption. The ΔG<sub>ads</sub> of <i>β</i>-HA was −28.81 kJ·mol<sup>−1</sup>
under the standard atmospheric pressure. Moreover, the theoretical calculation parameters revealed stronger
combination and higher interaction energy for inhibitor <i>β</i>-HA comparing with MHB and PE, further demonstrating the correlation between the theoretical and experimental results.
KW  - Corrosion; inhibitors; n80 steel; electrochemical; adsorption; molecular dynamics simulation

DO  - 10.32604/jrm.2021.015518