|About this Abstract
||Materials Science & Technology 2020
||Surface Treatments and Properties of Titanium and Titanium Alloys: A Forum on New Strategies and Processes for Biomedical and Industrial Advanced Applications
||Controlled Surface Topography of Titanium-based Implants via Use of Gas/Solid Reactions
||Naotaka Ogura, Pavan Kumar Srivas, Kenneth H. Sandhage
|On-Site Speaker (Planned)
The surface topography of a titanium-based biomedical implant can have a significant influence on osseointegration. Conventional methods for controlling the surface roughness, from the microscale down to the nanoscale, of such implants have involved line-of-sight methods that are limited to external surfaces. Given the advent of 3-D printing of macroporous titanium-based implants, new methods are needed for tailoring the topography of internal surfaces of such implants. We will present a novel, non-line-of-sight method for achieving controlled surface roughness of internal and external surfaces down to the nanoscale via the use of sequential gas/solid reactions. Titanium or titanium alloy surfaces are first exposed to a thermal oxidation treatment to generate a thin continuous oxide scale of tailorable thickness. This oxide scale is then allowed to react further to generate a composite scale. Partial selective dissolution then yields thin, uniformly nanoporous/nanorough surfaces.
||Planned: The journal 'Materials' is planning a special issue with papers from this symposium