Improving the corrosion resistance of metal surfaces using a polymeric nanocomposite coating armed with prepared carbon nanoparticles

• R.M. Darwish¹, Al-Dabbagh¹, B. Mohameed¹, J. Hanaa² and Z.M. Abbas³

¹ Applied Science Department, University of Technology, Baghdad, 10066, Iraq
² Materials Engineering College/University of Babylon, Babylon, 51002, Iraq
³ Department of Chemistry, Wasit University, Hay Al-Rabea, Kut, Wasit, 52001 Iraq

Abstract: Recycling waste to create valuable nanomaterials for various uses promotes sustainable development and safeguards the environment. In this study, carbon nanoparticles were obtained from petroleum residue during a crude oil refinery that was burned at 1050°C and crushed using an ultrasonic method. Then, carbon nanoparticles are dispersed through readily available monomers by the in-situ polymerization to produce a polyamide nanocarbon composite and blend with polyvinyl alcohol. The resulting blend is defect-free with uniform coverage and more robust and used as spray coating on Carbon steel substrate type ASTM A106 GRADE B pipe material to protect from corrosion. Investigations include EDS, particle size, and FTIR for nano carbon, polymer, and nanocomposite, then the Tafel test, open circuit potential, adhesion test, SEM, and optical microscope for the coating layer. According to the results, carbon nanoparticles with an average diameter of 37 nm were obtained, and by using prepared coating, metal is well enhanced to resist corrosion 200 times more than before. Moreover, it has high passivation and superior adherence properties. This indicates that the component of coating layers gives positive interactions simultaneously.

Keywords: recycling, nanoparticles, grafting, in situ polymerization, anti-corrosion

Int. J. Corros. Scale Inhib., 2023, 12, no. 4, 1576-1591
doi: 10.17675/2305-6894-2023-12-4-10

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