Abstract
Purpose - The purpose of this paper is to report the resistance of plasma-sprayed titanium dioxide (TiO(2)) nanostructured coatings in a corrosive environment. Design/methodology/approach - Weight loss studies are performed according to ASTM G31 specifications in 3.5 wt% NaCl. Electrochemical polarization resistance measurements are made according to ASTM G59-91 specifications. Corrosion resistance in a humid and corrosive environment is determined by exposing the samples in a salt spray chamber for 100 h. Microstructural studies are carried out using an atomic force microscope and scanning electron microscope. Findings - The nanostructured TiO(2) coatings offer good resistance to corrosion, as shown by the results of immersion, electrochemical and salt spray studies. The corrosion resistance of the coating is dictated primarily by the geometry of splat lamellae, density of unmelted nanoparticles, magnitude of porosity and surface homogeneity. Practical implications - The TiO(2) nanost
| Original language | English |
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| Journal | Anti-Corrosion Methods and Materials |
| State | Published - 2009 |