Fabrication and Physical Properties of Titanium Nitride/Hydroxyapatite Composites on Polyether Ether Ketone by RF Magnetron Sputtering Technique

Abstract

Abstract. Titanium nitride (TiN) coatings have been used very successfully in a variety of applications because of their excellent properties, such as the high hardness meaning good wear resistance and also used for covering medical implants. Hydroxyapatite is a bioactive ceramic that contributes to the restoration of bone tissue, which together with titanium nitride may contribute to obtaining a superior composite in terms of mechanical and bone tissue interaction matters. This paper aims to explain how to optimize deposition conditions for films synthesis on PEEK by varying sputtering parameters such as nitrogen flow rate and direction, deposition time, d-s (target-to-substrate distance) and 13.56 MHz RF power. The plasma conditions used to deposit films were monitored by the optical emission spectroscopy (OES). Titanium nitride/Hydroxyapatite composite films were performed by gas mixture with nitrogen and argon ratio of 1:3 and target-to-substrate distance at 8 cm. The gold colour, as-deposited film was found on PEEK with high hardness and higher surface energy than uncoated PEEK. X-ray diffraction characterization study was carried to study the crystal structural properties of these composites.

Effect of Immersion Time in Simulated Body Fluid on Adhesion Strength of Hydrothermally Treated Hydroxyapatite-Titanium Nitride Films on Polyetheretherketones

“…Due to the brittleness and low strength of HA (Fiume et al, 2021), titanium nitride (TiN) has been applied to reinforce the mechanical properties for the reason that TiN provides enhanced hardness and resistance to wear and corrosion ( Shi et al, 2015;Boonyawan et al, 2016). The HA-TiN composite film was developed to achieve exceptional features from both materials on the surface of PEEK (Boonyawan et al, 2016;Nupangtha and Boonyawan, 2017).…”

“…Magnetron sputtering is the effective surface coating method that can deposit various types of material, including metals, alloys, and ceramics (De Groot et al, 1998) onto the polymer substrate such as PEEK (Boonyawan et al, 2016;Nupangtha and Boonyawan, 2017). This technique attains a homogenous thin film with less than 1 micron in thickness (De Groot et al, 1998).…”

Dissolution Behavior of Hydrothermally Treated Hydroxyapatite–Titanium Nitride Films Coated on PEEK: In Vitro Study

“…The lower discharge power level caused a lower ionization of argon gas and resulted in a lower deposition rate of the sputtered coating. Additionally, the phase composition of the HA coating was affected by the discharge power [ 31 , 32 ]. Furthermore, the difference in the sputtering parameters, e.g., pulse frequency and argon flow rate, can affect the coating properties [ 17 , 33 , 34 ].…”