Product Code: ICAL08_M1205

Direct Laser Deposited Titanium with Controlled Porosity for Bone Tissue Engineering
Authors:
Andrew J Pinkerton, The University of Manchester; Manchester Great Britain
Christ P Paul, Raja Ramanna Centre for Advanced Technology; Indore 452013 (M.P) India
Mehrdad Iravani-Tabrizipour, University of Waterloo; Waterloo ON Canada
L M Kukreja, Raja Ramanna Centre for Advanced Technology; Indore 452013 (M.P) India
Amir Khajepour, University of Waterloo; Waterloo ON Canada
Presented at ICALEO 2008

The potential of engineered porous materials for aiding the osseointegration of metallic dental and orthopedic implants is well established. A range of techniques, such as powder metallurgy, plasma-spraying and titanium fiber meshing have been tried to produce the implant structures with control on porosity and other pertinent characteristics. In the present work, direct laser deposition of pure titanium powder (particle size: -100/+63 microns) is investigated as an alternative technique to form these porous structures. A 1 kW fiber laser, integrated with lateral powder feed nozzle and workstation, was used at different primary process parameters (laser power, powder mass flow rate, transverse speed, hatch parameter) to fabricate a number of multi-layer structures. The relevant structural parameters of these fabricated structures were studied as a function of the process parameters using various techniques. The result of these studies are presented.