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Protection of aluminum from corrosion by nanoparticles

Ahlam M. Farhan, Rasha A. Jassim, and Sameaa J. khammas

Department of Chemistry, College of Science for Women, University of Baghdad, Baghdad, Iraq



Received: 10 December 2021  Accepted: 22 August 2022


The characteristics of CdO nanoparticles were evaluated by the atomic force microscope (AFM). Measurements of the atomic force microscope (AFM) showed that the average size of CdO nanoparticles (93.62, 112.32 and 100.32) nm, synthesized aqueous cadmium chloride (CdCl2) solution at (1 * 10–2, 1 * 10–3 and 1 * 10–4) M through the Diried Quercus robur plant extract solution. By using CdO nanoparticles in different concentrations for the protection of aluminum alloy of corrosion in (0.2 N) HCl media was achieved. The high inhibition efficiency (% IE), (θ) the degree of surface coverage and (Rp) corrosion resistance were found at high concentration, the corrosion rate or weight loss decreased with increasing concentration in the presence of CdO nanoparticles, i(corr) the current density of the aluminum alloy with the highest value of the nanocadmium oxide concentration decreases as little as possible. The reason is that the cathodic process is more than the anodizing process due to the negative transformation of the corrosive voltage with the decrease in the concentration of the nanostructured therefore, the CdO nanoparticles can be suggested as good inhibitor for Aluminum alloy in (0.2 N) HCl media.

Keywords: Aluminum alloy; Corrosion inhibitors; CdO nanoparticles; Cadmium chloride (CdCl2); Diried Quercus robur plant; Hydrochloric acid (HCl)

Full paper is available at

DOI: 10.1007/s11696-022-02446-z


Chemical Papers 76 (12) 7847–7854 (2022)

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