Open AccessThe influence of corrosion of inorganic-organic films on their surface properties
Author(s) -
Iveta Papučová,
Jana Pagáčová,
Alfonz Plško
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/776/1/012103
Subject(s) - diiodomethane , contact angle , sessile drop technique , materials science , corrosion , surface energy , wetting , silane , distilled water , surface roughness , chemical engineering , dispersion (optics) , nitric acid , mineralogy , composite material , chemistry , metallurgy , chromatography , physics , optics , engineering
The work deals with the influence of water corrosion on the surface properties of inorganic-organic SiO 2 films, which were prepared from the sols in “tetraethoxysilane-isopropyl alcohol-water-nitric acid-triethoxy(octyl)silane” system. The atomic force microscopy and sessile drop technique was used on the characterization of surface properties. The morphology, rms -roughness, adhesion force and stiffness of prepared films were evaluated. Surface free energy and its polar and dispersion component were calculated by Owens-Wendt method using contact angles of distilled water and diiodomethane. The influence of corrosion on all of the studied properties of films was significant in the case of films prepared from sol with molar ratio of x (H 2 O) : x (SiO 2 ) = 2.