Toward 3D printed bioactive titanium scaffolds with bimodal pore size distribution for bone ingrowth
Wang, Jun Kit
Wiria, Florencia Edith
Choong, Cleo Swee Neo
Ruys, Andrew J.
Date of Issue2013
School of Materials Science and Engineering
Singapore Institute of Manufacturing Technology
Inkjet 3D printing as a versatile rapid manufacturing method was utilized for making titanium scaffolds with customized pores and geometry. A suitable binder/powder/solvent system was employed to make titanium printable and the parts were subjected to a firing process for strengthening. Mechanical stiffness of the part was tailored by varying printing and sintering parameters to meet that of the bone. Since titanium is inherently bioinert, the bioactivity of the parts was enhanced by surface modification of internal channels by electrochemical deposition of hydroxyapatite or hydrothermal treatment to form titania on the surface.
© 2013 The Authors. Published by Elsevier B.V. This paper was published in Procedia CIRP and is made available as an electronic reprint (preprint) with permission of the authors. The paper can be found at the following official DOI: [http://dx.doi.org/10.1016/j.procir.2013.01.032]. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.