Studies and researches regarding the obtaining of multifunctional nanocomposites coatings

[摘要] The paper presents the preparation of ZnO - SiO2 nanocomposite coatings by successive layers deposition using sol-gel method, dip-coating technique. The influence of the drawing speed and number of layers on the film morphology, optical properties and corrosion resistance were monitored. It has been found that the increase in drawing speed and the number of layers results in an increased film thickness and a modified film morphology by spherical restructuring. The films deposited on a glass substrate have a transparency ranging from 45-90% in the VIS-NIR range depending on the film thickness. In the case of non-transparent substrates, it has been found that these films diminish the reflectivity due to the surface morphology and the presence of ZnO nanoparticles that absorb some of the light radiation. The corrosion test has showed that all of the deposited films provide superior protection to the substrates.

[发布机构] Dunarea de Jos University of Galati, Romania^1

[效力级别] 材料科学

[关键词] Corrosion tests;Dip coating techniques;Film morphology;Glass substrates;Multifunctional nanocomposites;Nano-composite coating;Number of layers;Transparent substrate