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ITSC2023, Thermal Spray 2023: Proceedings from the International Thermal Spray Conference, 487-494, May 22–25, 2023,
... presents deposition and microstructural characterization of titanium/hydroxyapatite (Ti/HA) and titanium/baghdadite (Ti/BAG) composite coatings by cold spraying. Furthermore, the comparative corrosion response of these coatings under a simulated body fluid environment is reported. The effect of laser...
Proceedings Papers

ITSC 2022, Thermal Spray 2022: Proceedings from the International Thermal Spray Conference, 475-482, May 4–6, 2022,
... of hydroxyapatite and to overcome this brittleness issue, we investigate the role of an intermediate PEEK layer between the substrate and the deposit. We highlight how this sublayer previously deposited by FS or air APS spraying can help improving the consolidation of the coating and its growth. brittleness...
Proceedings Papers

ITSC 2021, Thermal Spray 2021: Proceedings from the International Thermal Spray Conference, 585-589, May 24–28, 2021,
... Abstract This study investigates the effect of composition on the antibacterial and antiviral properties of hydroxyapatite/titania composite coatings deposited by suspension plasma spraying. Hydroxyapatite is a bioceramic material used as a plasma-sprayed coating to promote osseointegration...
Proceedings Papers

ITSC 2019, Thermal Spray 2019: Proceedings from the International Thermal Spray Conference, 93-100, May 26–29, 2019,
... Abstract Tensile and shear adhesion strength tests were carried out to evaluate interfacial strength between hydroxyapatite (HA) coatings and titanium alloy substrates that that had been anodized or pre or post heat treated. Tensile and shear adhesion strength were both found to be influenced...
Proceedings Papers

ITSC 2019, Thermal Spray 2019: Proceedings from the International Thermal Spray Conference, 369-375, May 26–29, 2019,
... Abstract In this study, hydroxyapatite, titania, and HA-TiO 2 composite layers are deposited by suspension plasma spraying on titanium substrates and assessed by means of SEM and XRD analysis, Raman spectroscopy, and acoustic emission testing. The coatings exhibited dense microstructures...
Proceedings Papers

ITSC 2018, Thermal Spray 2018: Proceedings from the International Thermal Spray Conference, 643-646, May 7–10, 2018,
... the life of this type of implant. Hence, hydroxyapatite (HA) was coated on the substrates by using high velocity oxy- fuel (HVOF) spraying. The main purpose of such coatings is increasing bioactivity as well as corrosion resistance of the Mg alloy. Crystal structure was characterized by X-ray diffraction...
Proceedings Papers

ITSC 2017, Thermal Spray 2017: Proceedings from the International Thermal Spray Conference, 888-893, June 7–9, 2017,
... Abstract Hydroxyapatite (HAP) is available in powder form for plasma spraying. HAP powder was fabricated indigenously in the Rod form of diameter 4.17mm. This rod was sprayed with the help of MEC make Rodojet 9810 (flame spray process). Rodojet parameter were optimised for HAP rod...
Proceedings Papers

ITSC 2017, Thermal Spray 2017: Proceedings from the International Thermal Spray Conference, 142-146, June 7–9, 2017,
... Abstract Phase composition and microstructure of hydroxyapatite (HA) significantly affects the biological and mechanical properties of final hydroxyapatite (HA) coating. In the present study, HA coatings were deposited on Ti-6Al-4V by micro-plasma spraying (MPS) using different spray parameters...
Proceedings Papers

ITSC2016, Thermal Spray 2016: Proceedings from the International Thermal Spray Conference, 812-819, May 10–12, 2016,
... Abstract In this study, hydroxyapatite (HA) and HA-SiO 2 coatings are applied to unalloyed Ti by atmospheric plasma spraying and corrosion resistance is assessed by immersion in Ringer’s solution for 24 h. The results show that the HA coating improves corrosion resistance, which is further...
Proceedings Papers

ITSC2016, Thermal Spray 2016: Proceedings from the International Thermal Spray Conference, 840-845, May 10–12, 2016,
... Abstract This work serves as a proof-of-concept for the application of plasma sprayed hydroxyapatite (HA) coatings on biopolymer implants. In the absence of a conventional plasma sprayer, coating samples were produced by manually injecting HA powder into a plasma cutting torch fitted...
Proceedings Papers

ITSC2016, Thermal Spray 2016: Proceedings from the International Thermal Spray Conference, 857-861, May 10–12, 2016,
... Abstract In this study, hydroxyapatite (HA) coatings were deposited on stainless steel by suspension plasma spraying. Coating samples and suspensions were examined by means of electron microscopy, XRD analysis, and FTIR and Raman spectroscopy. The results show that the coatings are porous...
Proceedings Papers

ITSC2016, Thermal Spray 2016: Proceedings from the International Thermal Spray Conference, 6-11, May 10–12, 2016,
... Abstract In this work, two agglomerated hydroxyapatite (HA) powders, with and without heat treatment, were cold sprayed using various spraying parameters on metallic (Ti-6Al-4V) and polymeric (PVA) substrates. The structure of the agglomerated powders and corresponding features of the coatings...
Proceedings Papers

ITSC2016, Thermal Spray 2016: Proceedings from the International Thermal Spray Conference, 132-136, May 10–12, 2016,
... Abstract In this work, micro-plasma spraying is used to produce hydroxyapatite coatings on Ti-6Al-4V substrates. To understand coating formation mechanisms, in-flight particle velocity and surface temperature were monitored under different spraying conditions. XRD measurements show...
Proceedings Papers

ITSC 2015, Thermal Spray 2015: Proceedings from the International Thermal Spray Conference, 941-947, May 11–14, 2015,
... Abstract In the current investigation plasma spray technique was used for depositing hydroxyapatite (HA) and hydroxyapatite – silicon oxide (SiO 2 ) coatings on 316L SS substrate. In HA-SiO 2 coating, 20 wt% SiO 2 was mixed with HA. The feedstock and coatings were characterized by X-ray...
Proceedings Papers

ITSC2012, Thermal Spray 2012: Proceedings from the International Thermal Spray Conference, 225-230, May 21–24, 2012,
... Abstract The phenomena occurring after injection of water-ethanol suspension of fine hydroxyapatite powder are simulated numerically. The mathematical modeling starts with the calculation of the map of velocity and temperature of working plasma gases. The map is calculated by taking...
Proceedings Papers

ITSC 2011, Thermal Spray 2011: Proceedings from the International Thermal Spray Conference, 509-514, September 27–29, 2011,
... Abstract Hydroxyapatite (HAp: Ca 10 (PO 4 ) 6 OH 2 ) is a biocompatible and bioactive ceramic material widely used as a coating on metal surfaces (dental implants, hip replacements ...), but the low adhesion between HAp and the substrate due to the differences in thermal expansion coefficients...
Proceedings Papers

ITSC 2010, Thermal Spray 2010: Proceedings from the International Thermal Spray Conference, 721-724, May 3–5, 2010,
... Abstract Hydroxyapatite (HA) is preferred for its ability to interact with living bone, resulting in improvements of implant fixation and faster bone healing. In this study, a small amount of silicon dioxide (~ 2wt%) was introduced into HA slurry which was subsequently spray-dried into powder...
Proceedings Papers

ITSC 2010, Thermal Spray 2010: Proceedings from the International Thermal Spray Conference, 725-729, May 3–5, 2010,
... Abstract HVOF has the potential to produce Hydroxyapatite HA (Bio-ceramic) coatings based on its experience with other sprayed ceramic materials. This technique should offer mechanical and biological results comparable to other thermal spraying processes such as plasma spray currently FDA...
Proceedings Papers

ITSC 2009, Thermal Spray 2009: Proceedings from the International Thermal Spray Conference, 156-161, May 4–7, 2009,
... Abstract In this investigation, titanium dioxide and hydroxyapatite (HA) suspensions are plasma sprayed onto stainless steel, titanium, and aluminum substrates and the structure and properties of the resulting layers are correlated with spraying conditions. The suspensions were formulated...
Proceedings Papers

ITSC 2009, Thermal Spray 2009: Proceedings from the International Thermal Spray Conference, 354-360, May 4–7, 2009,
... Abstract In recent studies, titania has been added to hydroxyapatite (HA) coatings to impart photocatalytic properties. The benefits of such additions are maximized when titania is in nanocrystalline anatase form. In this study, nano-titania was synthesized in-flight from a liquid precursor...