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Corrosion protection of 1050 aluminium alloy using a smart self-cleaning TiO2-CNT coating

Shadravan, A ; Sharif University of Technology | 2015

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  1. Type of Document: Article
  2. DOI: 10.1016/j.surfcoat.2015.05.015
  3. Publisher: Elsevier , 2015
  4. Abstract:
  5. Inclusion of carbon nanotubes (CNTs) into the titanium dioxide coating on 1050 aluminium alloy was studied with the aim at enhancing the corrosion resistance of the surface. Composite coatings with various contents of CNTs were prepared via the sol-gel method and dip coating. XRD and FTIR phase and structural evaluations showed the presence of anatase phase in all thin films. Concomitant enhanced corrosion behaviour in the presence of CNTs was resulted from polarization potentiodynamic test. Band-gap evaluation was performed using absorbance spectra of coatings and showed considerable decrease of band-gap energy in the presence of CNTs. Photocatalytic properties and hydrophilicity of composite coatings were also analysed and evidenced the significant role of CNTs in obtaining the desirable photocatalytic and hydrophilic properties
  6. Keywords:
  7. Photocatalytic activity ; Sol-gel ; TiO2-CNT ; Aluminum ; Aluminum alloys ; Aluminum corrosion ; Carbon nanotubes ; Corrosion ; Corrosion resistance ; Energy gap ; Fourier transform infrared spectroscopy ; Hydrophilicity ; Photocatalysis ; Sol-gel process ; Sol-gels ; Titanium dioxide ; Yarn ; 1050 aluminium alloy ; Corrosion behaviour ; Hydrophilic properties ; Photocatalytic activities ; Photocatalytic property ; Potentiodynamic tests ; Structural evaluation ; TiO ; Composite coatings
  8. Source: Surface and Coatings Technology ; Volume 275 , 2015 , Pages 224-231 ; 02578972 (ISSN)
  9. URL: http://www.sciencedirect.com/science/article/pii/S0257897215300074