ABSTRACT

The ethanolic extract of Acacia senegal are tested for their effectiveness to combat corrosion rate of mild steel in 2N hydrochloric and sulfuric acid by mass loss method at different temperatures. Temperature affects the various reaction rates so any suitable range of temperature can be maintained with the help of constant temperature bath controlled automatically to the range of ±10C. The value of activation energy and free energy of adsorption have also been calculated to investigate the mechanism of the corrosion inhibition. The free Gibbs adsorption energy value, ?Gads of inhibitors is negative which indicates the spontaneity of adsorption process on mild steel surface. Phenomenon of physical adsorption is proposed from the activation parameters obtained. Keywords: Corrosion, Inhibitors, Acacia senegal, H2SO4, Mild Steel
Publication date: 01/02/2020

https://ijbpas.com/pdf/2020/February/MS_IJBPAS_2020_4954.pdf

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https://doi.org/10.31032/IJBPAS/2020/9.2.4954