Low-temperature biomimetic formation of apatite/TiO2 composite coatings on Ti and NiTi shape memory alloy and their characterization

Preparation of Metal Coatings on Steel Balls Using Mechanical Coating Technique and Its Process Analysis

“…Other functions such as photocatalytic activity have also been found in metal/alloy coatings after certain treatments including thermal oxidation [7,8], chemical oxidation [9,10], plasma electrolytic oxidation [11,12], anodic oxidation [13,14], among others. In our published work, we prepared TiO 2 /Ti composite photocatalyst coatings on the substrate of Al 2 O 3 balls using mechanical coating followed by thermal oxidation [15].…”

Photocatalytic activity of low temperature oxidized Ti–6Al–4V

“…As an alternative, the H 2 O 2 -oxidation and hot water aging technique of titanium and titanium alloys presents a cheap and straightforward way of obtaining photocatalytically active surfaces with on demand antibacterial properties. Whereas previous studies on similar treatments focused on bioactivity while altering substrate materials or treatment medium [19][20][21][22], the current study aimed at investigating the properties of Ti-6Al-4V after being subjected solely to H 2 O 2 and H 2 O at 80°C for various periods of time, and optimizing the treatment for high photocatalytic activity. Photocatalytic TiO 2 films have been shown to be multifunctionally effective in biomedical applications due to its superhydrophilic and bactericidal properties, both induced by UV illumination [8].…”

“…These include anodic oxidation [4][5][6], sol-gel coating [7], pulse magnetron sputtering [8], plasma source ion implantation [9,10] and chemical or physical vapor deposition [11,12]. A more straightforward method of modifying the surface of Ti-based materials is through simple chemical treatments to obtain an amorphous titania gel coating, either in alkali solution [13] or in hydrogen peroxide (H 2 O 2 ), followed by heat treatment [13][14][15][16][17][18] or aging in hot water [19][20][21][22] to crystallize the coating into anatase for improved bioactivity. Regarded as a low-temperature process, the H 2 O 2 -oxidation combined with the hot water aging technique has economical advantages due to its relative simplicity and the fact that it also permits uniform, controlled coating of titanium devices with complex shapes.…”

Mechanical performance of apatite/TiO2 composite coatings formed on Ti and NiTi shape memory alloy

“…As biomimetic deposition is performed at the body temperature and in a relatively mild environment, it allows the incorporation of various biomolecules and drugs that can be potentially beneficial for enhancing/ accelerating bone formation and/or for other purposes. In previous investigations, apatite/TiO 2 composite coatings were formed on Ti and NiTi shape memory alloy (SMA) using the biomimetic deposition route and the composition and structure of these coatings as well as the deposition processes were studied [9,10].…”