Titania films and Coatings

In a generic study, sol-gel-derived titania films were deposited to mimic as closely as possible the native oxide layer found on titanium implants (Haddow et al., 1996). The effects of dip rate, sintering temperature and time on the chemical composition of the films, their physical structure and thickness, and adherence to a silica substrate were investigated. These films are to be used as substrates in an in vitro model of osseointegration. 

A related study showed the important influence aging of the sol has on the topographical structure of sol-gel deposited titania coatings developed as precursors for subsequent calcium phosphate deposition from SBFs (Peltola et al., 2000). In their study, different sol-gel-derived titania coatings were produced on titanium 

This porosity is beneficial to the circulation of physiological fluid when the coating is used for biomedical applications. The satisfactory adhesion between the coating and substrate suggests its suitability for (limited) load-bearing applications. 

Bioactive hydroxyapatite films were fabricated by a sol-gel method (Wang etal., 2007) usingtriethylphosphate and calcium nitrate as phosphorus and calcium precursors, respectively. The effects of the heat treatment temperature, pH level and types of substrate material on the phase formation and microstructural features of 

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