Abstract

RACHED, S. et al. Inhibition of Copper Corrosion in Sulfuric Acid by Mentha Pulegium L.. Port. Electrochim. Acta [online]. 2024, vol.42, n.2, pp.137-153.  Epub Jan 31, 2024. ISSN 0872-1904.  https://doi.org/10.4152/pea.2024420205.

The application of inhibitors against metals and alloys corrosion in various aggressive environments is an excellent solution. The present study explored Cu corrosion inhibition in a 0.5 M H2SO4 solution by MP EO, from Western Morocco, using EIS and PDP analyses. GC coupled with MS revealed that MP EO is mainly composed of pulegone (23.38%), isomenthone (20.54%) and l-menthone (9.56%). MP inhibitory behavior was of mixed type. MO EO prevented Cu corrosion in H2SO4, with an IE(%) that increased with its Ct, at a maximum of 91.0%, with 1 g/L. The Cu surface was studied by SEM coupled with EDS.

Keywords : Cu; EDS; EIS; EO; GC; H₂SO₄; IE(%); MP; MS; SEM.

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