Abstract

Inhibition effects of a DMPOderivative on the corrosion of zincaluminiumalloyin 0.1NHydrochloric acid solution by OCP method at different temperatures

Author(s): R.D.Pruthviraj

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 ofDMPO onZinc-Aluminumalloy in 1.0MHCl 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-AluminumAlloy surface, leading to the formation of protective films. The novel synthesized corrosion inhibitor was characterized using UV-Vis spectral analyses.


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