A novel coating material that uses nano-sized SiO2 particles to intensify hydrophobicity and corrosion protection properties
Document Type
Article
Publication Date
1-1-2016
Abstract
The influence of SiO2 nanoparticles on hydrophobicity and the corrosion protection capabilities of hybrid acrylic-silicone polymeric matrix have been investigated. Contact angle measurements (CA), atomic force microscopy (AFM), field emission scanning electron microscopy (FE-SEM), and energy dispersive X-ray spectroscopy (EDX) were used to study the hydrophobicity, morphology, and topography of the coatings. In addition, electrochemical impedance spectroscopy (EIS) and salt spray techniques were employed to evaluate the corrosion protection performance. A coating with 3 wt.% SiO2, AS 3, demonstrates significant improvement in corrosion resistance with the highest measured CA of 97.3°. Morphology and topography studies clarify the influence of nano-sized SiO2 fillers on the surface topography and demonstrated the uniform and good distribution of the embedded SiO2 nanoparticles within the polymeric matrix.
Keywords
Mild steel, Organic coatings, Nanocomposites, SiO2 nanoparticles, AFM
Divisions
PHYSICS
Funders
University of Malaya: Research grants RP025C-14AFR and PPP grant PG001-2016A,Ministry of Education, Malaysia: High Impact Research Grant (H-21001-F000046)
Publication Title
Electrochimica Acta
Volume
220
Publisher
Elsevier