SOL-GEL PROCESSING OF TITANIUM-CONTAINING THIN COATINGS .3. PROPERTIES

Some investigations of the thickness, spectral transmittance and reflection, refraction index, abrasion protection, ageing, boiling-water and alkaline-solution treatment have been carried out on coatings deposited by the dip-coating process on a glass substrate. As a starting system, Ti(OBun)4-C2H5OH-H2O was used. The dependence of the properties of the coatings as a function of composition, dipping speed, and the number of deposited layers on the conditions of thermal treatment, was investigated. Introducing 3d-transition elements into the sol solution causes a stable colouring effect, thus decreasing the spectral transmittance of the layers. A correlation between the data from the properties investigated and the structural characteristics of the layers has been made.