Izvorni znanstveni članak
https://doi.org/10.5599/jese.2012.0013
Corrosion inhibition of carbon steel by extract of Buddleia perfoliata
Roy Lopes-Sesenes
; Universidad Autonoma del Estado de Morelos, CIICAP, Mexico
Jose Gonzalo Gonzalez-Rodruguez
; Universidad Autonoma del Estado de Morelos, CIICAP, Mexico
Gloria Francisca Dominguez-Patino
; Universidad Autonoma del Estado de Morelos, Facultad de Ciencias Biologicas, Mexico
Alberto Marinez-Villafane
; Centro de Investigaciones en Materiales Avanzados, Chihuahua, Mexico
Sažetak
Buddleia perfoliata leaves extract has been investigated as a carbon steel corrosion inhibitor in 0.5 M sulfuric acid by using polarization curves, electrochemical impedance spectroscopy and weight-loss tests at different concentrations (0, 100, 200, 300, 400 and 500 ppm) and temperatures, namely 25, 40 and 60 °C. Results showthat inhibition efficiency increases as the inhibitor concentration increases, decreases with temperature, and reaches a maximum value after 12 h of exposure, decreasing with a further increase in the exposure time. It was found that the inhibitory effect is due to the presence of tannines on this extract.
Ključne riječi
Corrosion inhibitor; Buddleia perfoliata; EIS; polarization curves
Hrčak ID:
86992
URI
Datum izdavanja:
18.6.2012.
Posjeta: 1.901 *