Titanium and zirconium hard coatings on glass substrates prepared by the sol–gel method
| Autor: | Nicola Senin, G. Gnappi, Angelo Montenero, Andrea Lorenzi, Ilaria Alfieri, Paola Fabbri, Paolo Zurlini, Roberto Groppetti |
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| Přispěvatelé: | P. Zurlini, A. Lorenzi, I. Alfieri, G. Gnappi, A. Montenero, N. Senin, R. Groppetti, P. Fabbri |
| Rok vydání: | 2009 |
| Předmět: |
Zirconium
Materials science Scanning electron microscope Metals and Alloys Scratch hardness chemistry.chemical_element Mineralogy TITANIUM OXIDE Surfaces and Interfaces zircon engineering.material hard coating Surfaces Coatings and Films Electronic Optical and Magnetic Materials SOL GEL Coating chemistry Chemical engineering Boron oxide sol-gel deposition hardness surface morphology zirconium oxide titanium oxide boron oxide Materials Chemistry engineering Boron Sol-gel Titanium |
| Zdroj: | Thin Solid Films. 517:5881-5887 |
| ISSN: | 0040-6090 |
| DOI: | 10.1016/j.tsf.2009.03.211 |
| Popis: | In this work innovative antiscratch sol–gel coating films deposited on a soda–lime glass substrate are examined. Sol–gel coatings of different composition (TiO 2 , TiO 2 /B 2 O 3 , ZrO 2 and ZrO 2 /B 2 O 3 ) were prepared starting from Titanium, Zirconium and Boron alkoxides and from boron oxide. Coatings were obtained at room temperature and at atmospheric pressure by dip-coating using common soda lime silicate glass slides as substrates. Densification was carried out at 550 °C for 2 h in air. The morphology of the coatings has been studied by Atomic Force Microscopy, Scanning Electron Microscopy, and with a profilometer. Roughness grows with thickness and with boron addition. The mechanical properties of the films were evaluated by micro scratch at fixed and variable load. The scratch hardness numbers of ZrO 2 and ZrO 2 /B 2 O 3 coatings reach 6 GPa (glass value = 1.9 GPa), whereas the best value for the critical load is 16.7 N (glass value = 9 N). |
| Databáze: | OpenAIRE |
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