RF Magnetron Sputtering Coating Of Hydroxyapatite On Alkali Solution Treated Titanate Nanorods

Abstract

Hydroxyapatite (HA) is a material with outstanding biocompatibility. It is chemically similar to natural bone tissue, and has therefore been favored for use as a coating material for dental and orthopedic implants. In this study, RF magnetron sputtering was applied for HA coating. And Alkali treatment was performed in a 5 M NaOH solution at 60• C. The coated HA thin film was heat-treated at a range of temperatures from 300 to 600• C. The morphological characterization and crystal structures of the coated specimens were then obtained via FE-SEM, XRD, and FT-IR. The amorphous thin film obtained on hydrothermally treated nanorods transformed into a crystalline thin film after the heat treatment. The change in the phase transformation, with an enhanced crystallinity, showed a reduced wettability. The hydrothermally treated nanorods with an amorphous thin film, on the other hand, showed an outstanding wettability. The HA thin film perpendicularly coated the nanorods in the upper and inner parts via RF magnetron sputtering, and the FT-IR results confirmed that the molecular bonding of the coated film had an HA structure.

Dental Implants: Modern Materials and Methods of Their Surface Modification

“…Chemical (including electrochemical) etching: -acid etching (Acid etching) [331][332][333]. -Alkaline etching (Alkali treatment) [289,[334][335][336] It is possible to obtain different surface textures (its roughness) by adjusting the composition of etching solutions (as a rule, acid concentration), temperature, and etching time. Acid etching significantly increases the roughness of the implant surface without changing its marginal wetting angle.…”