Corrosion inhibition of Q235 steel in HCl medium by 5,5,7,12,12,14-hexamethyl-1,4,8,11-tetraazacyclotetradecane

The corrosion inhibition of Q235 steel in HCl solution by 5,5,7,12,12,14-hexamethyl-1,4,8,11-tetra-zacyclotetradecane (HMETD) as a fully saturated macrocyclic has been studied using potentiodynamic polarization, weight loss measurement and microstructure analysis. Results indicate that the saturated...

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Bibliographic Details
Published in:International journal of electrochemical science 2017-12, Vol.12 (12), p.11742-11753
Main Authors: Gou, Wan, Lai, Chuan, Xiang, Zhen, Yang, Li, Zhang, Ping, Xie, Wenke, Chen, Luo, Luo, Guangbing, Li, Xiaolong, Chen, Zongxin
Format: Article
Language:English
Subjects:
Acid
Adsorption
Corrosion
Inhibitor
Macrocyclic
Steel
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Summary:The corrosion inhibition of Q235 steel in HCl solution by 5,5,7,12,12,14-hexamethyl-1,4,8,11-tetra-zacyclotetradecane (HMETD) as a fully saturated macrocyclic has been studied using potentiodynamic polarization, weight loss measurement and microstructure analysis. Results indicate that the saturated macrocyclic inhibitor of HMETD is an effective mixed-type inhibitor, the inhibition efficiency slightly fluctuate with storage time changing, increase with HMETD concentration increasing, decrease with HCl concentration and temperature increasing. The adsorption of HMETD on Q235 steel surface obeys Langmuir isotherm, which is a mixed adsorption containing physisorption and chemisorption.
ISSN:1452-3981
1452-3981
DOI:10.20964/2017.12.52