Improvement of bonding strength to titanium surface by sol–gel derived hybrid coating of hydroxyapatite and titania by sol–gel process

Surface properties and cell response of fluoridated hydroxyapatite/TiO2 coated on Ti substrate

“…In the test, an increasing normal load is applied to the diamond stylus. Simultaneously, the diamond stylus was scratched over the coating surface at a constant speed [7,12,13,10,14]. Twelve readings of such critical load values were averaged for each sample, and the standard deviation of the data was taken as the error.…”

“…The point of debonding of the coating was detected by a gradual increase in friction force. The load at which total peeling-off of the coating from the substrate occurs is referred to as the critical load [13,16].…”

“…In vitro tests of cell studies on FHAp coatings have revealed that FHAp with a fluoride content ranging from 0.03 to 0.40 mol is suitable for implantation [7,10]. In addition to its high thermal and chemical stability, FHAp is considered a promising implant material on account of its bioactivity, biocompatibility and high adhesion strength between the FHAp film and Ti substrate [12,13,10,14].…”

Biomaterials Obtained by Gelation

“…HA-containing nanocomposites were produced by mixing a stable nano-HA sol with sol-gel bioglasses (Ragel et al 2002;Valenzuela et al 2012) or polymers (Alves Cardoso et al 2012;Dessı et al 2012;Chen and Hao 2013;Demirel and Aksakal 2015). The sol-gel synthesis of TiO 2 -HA composites was reported (Milella et al 2001;Im et al 2007). HA and TiO 2 -HA aerogel powders were also dispersed in PCL, but their biocompatibility was not evaluated (Salarian et al 2014).…”

Preparation and Characterization of Chitosan/Hydroxyapatite Sol-Gel Coating on Ti-6Al-4V

“…The sol-gel process ensures that an attractive method to others due to the easy occurring of crystalline films at relatively lower processing temperatures, higher purity and homogeneity, thin films, simple and easy method of preparation (Im et al, 2007). It is convenient for complex shapes like coatings and the main advantage of this process is that the properties of the surface not change at all (Brinker and Scherer, 1990).…”