Effect of ZnO Nanoparticles on the Anticorrosion Properties of Epoxy Coating
Journal Title: Analele Universitatii "Dunarea de Jos" din Galati. Fascicula IX, Metalurgie si Stiinta Materialelor - Year 2014, Vol 37, Issue 2
Abstract
Homogeneous epoxy coating obtained by embedding ZnO nanoparticles (≤50 nm) in the epoxy matrix, was applied on Grade A naval steel substrates by dipcoating method. The morphology and microstructure of the coatings were characterized by optical microscopy, scanning electron microscopy with electron diffraction spectroscopy (SEM-EDS) and X-ray diffraction (XRD) analysis. The effect of nanoparticles on the corrosion resistance of the hybrid coatings was investigated by potentiodynamic polarization method. The coated steel samples were electrochemically monitored over the 30 days of immersion in 5 wt.% NaCl solution. The incorporation of a small amount of ZnO nanoparticles (1 wt.%) has a beneficial effect, significantly improving the anticorrosion behavior of coating in terms of polarization resistance and corrosion rate, parameters estimated from Tafel curves.
Authors and Affiliations
Viorel PANAITE, Viorica MUȘAT
The Quality of Metal Products Made on CNC Machines
Contemporary market must provide products that adapt to customer needs, which requires large investments and long-term employment. Producers have to take care of the buyers’ different way of thinking. The quality of prod...
Estimation of the Metallurgical Industry Impact on the Environment
Objectively, the ecosystem in its development and working implies the accumulations on of some nonconcordances. Summing these disfunctions without taking into consideration their attenuation, may lead to producing, achie...
Electromagnetic Strip Mills' Driving Rollers Metallisation Advanced Technics
The continuous increase of the applications of thermal sprayed coatings together with the demand for layers having always more and more enhanced performances and properties stimulates the research activity toward the dev...
Prediction of Work Parameters in a Cold Mill Using Neural Network
The accurate prediction of work parameters is essential for a quality product. A mathematical model is used for parameters calculus. It is important to directly predict the roll force and the other parameters and to comp...
Solutocapillary Effects of Sulphur in CaO-Al2O3 Slags, in Marangoni Instability and Convection Onset, Related to the Desulphurization of low Carbon, Aluminium Killed Steels
Based on the “one layer model” applied to desulphurization slag layer with boundary conditions, imposed due to the sulphur transfer through the interface steel-slag during desulphurization process, the threshold conditio...