Post-deposition laser treatment of plasma sprayed titania-hydroxyapatite functionally graded coatings

Micro-scratch and corrosion behavior of functionally graded HA-TiO2 nanostructured composite coatings fabricated by electrophoretic deposition

“…An approach to cope better with mentioned problems is the use of functionally graded structure of HA-TiO 2 coatings with gradient composition of 100% TiO 2 at the interface and 100% HA at the coating surface (Farnoush et al, 2015a). By introducing the concept of a functionally graded material (FGM) in the coating, sharp change in thermal expansion behavior at the coating-substrate interface can be improved by gradual distribution of thermal stresses (Askari et al, 2012;Cannillo et al, 2008;Cannillo et al, 2009;Hvizdoš et al, 2007;Kaya, 2003;Zarabian et al, 2013). As a result, it would eliminate the microcracks formed during sintering and access higher interfacial bonding strength.…”

“…There are not so many reports on HA-TiO 2 functionally graded coatings. Cannillo et al developed the HATiO 2 FGM by plasma spraying (Cannillo et al, 2008;Cannillo et al, 2009). They concentrated on the optimization of the spraying conditions and accordingly, the mechanical properties were evaluated via Vickers micro-indentation tests.…”

Laser surface remelting of plasma-sprayed nanostructured Al2O3–13wt%TiO2 coatings on magnesium alloy

“…Many investigations of post laser treatment have been done on the plasma-sprayed coatings, which may contribute to the elimination of porosity, enhancement of the coating strength and chemical homogeneity, as well as the development of a metallurgical bonding at the coating-substrate interface producing strengthened coating adhesion [14,15]. The conventional Al 2 O 3 -TiO 2 ceramic coatings on carbon steel and aluminum alloys prepared by plasma spraying and laser remelting have been investigated [16][17][18][19].…”

Functionally graded HA–TiO2 nanostructured composite coating on Ti–6Al–4V substrate via electrophoretic deposition

“…Furthermore, TiO 2 acts as a chemical barrier against the release metal ions and has a superior corrosion behavior [34,35]. The sharp changes in thermal expansion behavior of coating-substrate interface can be A C C E P T E D M A N U S C R I P T ACCEPTED MANUSCRIPT 3 greatly improved by implementation of functionally graded material (FGM) in the coatings [36][37][38][39][40][41]. Thus, the elimination of microcracks formed during sintering and higher interfacial bonding strength could be achieved by using functionally graded structure of HA-TiO 2 coatings with gradient composition of 100% TiO 2 at the interface and 100% HA at the coating surface.…”

“…Cannillo et al previously optimized the spraying conditions and studied the mechanical properties of plasma sprayed HA-TiO 2 FGM by Vickers micro-indentation tests [39,40].…”