Abstract
The use of silver-doped hydroxyapatite (Ag-HA) as a coating on commercially pure titanium (cpTi) is reported. The surfaces of cpTi substrates were modified using magnetron co- sputtered Ag-HA films, of thickness between 10–20 nm at 10 and 30W radio frequency (RF) of silver (Ag), to vary the composition of silver. The surface morphology, composition and structure of the as-deposited coating and after heat treatment were assessed using various characterization methods. The RHEED analysis showed that the as-deposited Ag-HA films were either amorphous or made up of nanocrystals whiles the crystallinity of Ag-HA films increased after post-deposition heat treatment. The EDX, XPS and XRD techniques showed major peaks representing Ca, P and Ag for the as-deposited and the heat-treated coatings. Magnetron sputtering proved to be a viable thin film deposition process, maintaining the mechanical integrity of Ti as well as the bioactivity of the coated hydroxyapatite (HA).
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