Green Extract of Mate Tea as Corrosion Inhibitor of Copper and Aluminum

  • Ana M. Derna
  • Claudia M. Méndez
  • Liliana M. Gassa
  • Alicia E. AresEmail author
Conference paper
Part of the The Minerals, Metals & Materials Series book series (MMMS)


Many of the corrosion inhibitors in current use are expensive and toxic so the current trend is to study compounds that are environmentally friendly and efficient. Inhibitors are easy to use and they have the additional advantage that can be applied in situ and without causing significant disruption in the process. In the present work we investigate the influence of the aqueous extract of yerba mate as corrosion inhibitor of copper and aluminum in 0.5 M NaCl and 1 M HCl solutions, using different electrochemical techniques. The following inhibition efficiencies: 56% for copper in 0.5 M NaCl with 25% concentration of extract, 17% for copper in 1 M HCl with 5% concentration of extract, and 99% for aluminum in 0.5 M NaCl for 1% concentration of extract were obtained by potentiodynamic polarization.


Inhibitors Mate tea Copper Aluminum Corrosion parameters 



This work was supported by Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) and Agencia Nacional de Promoción Científica y Tecnológica (ANPCyT), from Argentina.


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Copyright information

© The Minerals, Metals & Materials Society 2017

Authors and Affiliations

  • Ana M. Derna
    • 1
  • Claudia M. Méndez
    • 1
  • Liliana M. Gassa
    • 2
    • 3
  • Alicia E. Ares
    • 1
    • 2
    Email author
  1. 1.Faculty of SciencesNational University of MisionesPosadasArgentina
  2. 2.CIC of the National Research Council (CONICET) of ArgentinaBuenos AiresArgentina
  3. 3.Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas, INIFTALa PlataArgentina

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