Corrosion Inhibition of Aluminum in Acidic Solution by Ilex paraguariensis (Yerba Mate) Extract as a Green Inhibitor

被引：18
|
作者：
Mendez, Claudia M. [1 ,2 ]
Gervasi, Claudio A. [3 ,4 ]
Pozzi, Gonzalo [1 ]
Ares, Alicia E. [1 ,2 ]
机构：
[1] Univ Nacl Misiones, Fac Ciencias Exactas Quim & Nat, Programa Mat & Fisicoquim, Felix de Azara 1552, RA-3300 Posadas, Argentina
[2] Univ Nacl Misiones, Fac Ciencias Exactas Quim & Nat, Consejo Nacl Invest Cient & Tecn, Inst Mat Mis, Felix de Azara 1552, RA-3300 Posadas, Argentina
[3] Univ Nacl La Plata, Fac Ciencias Exactas, Consejo Nacl Invest Cient & Tecn, Inst Invest Fisicoquim Teor & Aplicadas, Diagonal 113 & 64 S-N, RA-1900 La Plata, Argentina
[4] Univ Nacl La Plata, Fac Ingn, Area Electroquim, Av 1 750, RA-1900 La Plata, Argentina
来源：
COATINGS | 2023年 / 13卷 / 02期
关键词：
Ilex paraguariensis; green corrosion inhibitor; EIS; adsorption isotherm; MILD-STEEL; CARBON-STEEL; COPPER CORROSION; LEAVES EXTRACT; ESSENTIAL OIL; HCL; MEDIA; IRON; BEHAVIOR; METALS;
D O I：
10.3390/coatings13020434
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In the present work, the inhibitory effect of Ilex paraguariensis (Yerba Mate) extract on the corrosion of aluminum in 0.1 M HCl solution, in the temperature range of 298-323 K, was studied by using weight loss tests, potentiodynamic polarization measurements and electrochemical impedance spectroscopy (EIS). The extract of Ilex paraguariensis exhibits improved inhibitory action as its concentration increases while its performance is maintained despite an increase in temperature. EIS theoretical data according to a suitable proposed equivalent circuit were successfully fitted to the experimental data. The adsorption of organic compounds followed a modified Langmuir isotherm behaviour. Derived thermodynamic parameters indicate the occurrence of both chemical and physical adsorption.
引用
收藏
页数：18
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