Abstract
The structure of an implant's coating can significantly affect its physical and chemical properties, and eventually - its clinical performance. In this paper, the nanostructure of an electrochemically deposited hydroxyapatite (EDHA) coating was studied by X-ray diffraction (XRD), scanning electron microscopy (SEM), and high-resolution transmission electron microscopy (HRTEM). The X-ray analysis showed that the coating consisted predominantly of the stoichiometric HA phase. However, SEM and HRTEM revealed that EDHA coating is composed of two distinct regions: the upper layer consisted of platelet crystallites preferentially grown perpendicular to the substrate surface, while the lower layer was dense and uniform and consisted of nano-sized crystallites of HA. The possible effects of these different microstructures on the implant's after-implantation behavior are discussed.
| Original language | English |
|---|---|
| Pages (from-to) | 2455-2457 |
| Number of pages | 3 |
| Journal | Materials Letters |
| Volume | 65 |
| Issue number | 15-16 |
| DOIs | |
| State | Published - Aug 2011 |
Keywords
- Biomaterials
- Electrodeposition
- Hydroxyapatite
- Orthopaedic implants
All Science Journal Classification (ASJC) codes
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering
- General Materials Science