Inhibition Effects of a DMPO Derivative on the Corrosion of Zinc-Aluminium alloy in 0.1NHydrochloric Acid Solution by OCP Method at different Temperatures


1,5-Dimethyl-4-((2-methylbenzylidene)amino)-2-phenyl-1H-pyrazol-3(2H)-one (DMPO) was synthesized to be evaluated as a corrosion inhibitor. The corrosion inhibitory effects of DMPO on Zinc-Aluminum alloy in 1.0 M HCl were investigated using open circuit potential (OCP). The results showed that DMPO inhibited Zinc-Aluminium alloy corrosion in acid solution and indicated that the inhibition efficiency increased with increasing inhibitor concentration. Changes in the impedance parameters suggested an adsorption of DMPO onto the Zinc-Aluminum Alloy surface, leading to the formation of protective films. The novel synthesized corrosion inhibitor was characterized using UV-Vis spectral analyses.

Keywords: DMPO, corrosion inhibitor, open circuit potential (OCP)

Article Review Status: Published

Pages: 10-17 (Download PDF)

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