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Experimental investigation on corrosion inhibition of thiourea on aluminum surface in 0.5 M H2SO4 acid solution

  • Physicochemical Problems of Materials Protection
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Abstract

Effect of thiourea on corrosion resistance of aluminum in 0.5 M H2SO4 solution is experimentally investigated. Results show that the addition of thiourea inhibits the sulfuric acid corrosion of aluminum. The inhibition efficiency can be enhanced with an increase in thiourea concentration. It is found that Rp values increases and C dl values decreases with increasing inhibitor concentration. The inhibition happens through adsorption of thiourea on the metal surface without modifying the mechanism of corrosion process. Inhibition efficiency obtained from all methods is in good agreement. The adsorption of inhibitor on aluminum surface from 0.5 M H2SO4 acid solution obeys Langmuir adsorption isotherm.

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Authors and Affiliations

  1. Department of Material Science and Engineering, Faculty of Engineering, Shahid Bahonar University, Kerman, Iran

    Mahjoubeh Sistaninia, Fatemeh Baghaei Ravari & Athareh Dadgarinezhad

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  1. Mahjoubeh Sistaninia
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  2. Fatemeh Baghaei Ravari
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  3. Athareh Dadgarinezhad
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Correspondence to Mahjoubeh Sistaninia.

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Sistaninia, M., Ravari, F.B. & Dadgarinezhad, A. Experimental investigation on corrosion inhibition of thiourea on aluminum surface in 0.5 M H2SO4 acid solution. Prot Met Phys Chem Surf 53, 950–955 (2017). https://doi.org/10.1134/S2070205117050227

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  • DOI: https://doi.org/10.1134/S2070205117050227

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