· International Research Journal of Modernization in Engineering Technology and Science 2026 · 2026
DOI: 10.56726/irjmets103202
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Inhibitory property of ethylamines on corrosion of zinc in H3PO4 solution was investigated by weight loss, immersion time, synergistic effect and by open circuit potential (OCP) measurements.Corrosion loss (C.L.) increases with increase in immersion time.The highest Inhibition efficiency (I.E.) of 76.01 % was observed with triethylamine only whereas an improved I.E. of 87.10 % was observed with the mixture of 20 mM triethylamine and 30 mM KI in 0.05 M H3PO4 due to synergism.Initial OCP (Ein) values increases (less negative direction) in presence of inhibitor compared to potential of uninhibited acid suggesting polarization of local anodes.Kinetic parameters like Rate constant (k) and Half-life (t1/2) has also been studied.Higher the half-life period, higher will be I. E. and lower the corrosion rate.I.E.was found in the decreasing order: tri ethylamine > diethylamine > ethylamine.
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