Processing of Apatite-Wollastonite (AW) Glass-Ceramic for Three Dimensional Printing (3DP)

Abstract:

Apatite-wollastonite glass ceramics (AW) in bone regeneration and replacement applications have been seen as a favourable alternative to allografts and autografts. A-W has good biocompatibility, bioactivity, chemical stability and mechanical properties. In this study AW was used to fabricate 3D parts for bone applications by an indirect three dimensional printing (3DP) technique. Various powder blends of AW and maltodextrine (MD) were processed using the Z Corp 3D printing process, with two different liquid binder systems. The green parts were post-processed through using a heat treatment to burn off the binder and sinter the powder particles. Consistent results were obtained for all tested specimens in terms of density, porosity and shrinkage. The highest strength after sintering was 35.6 MPa.

• Periodical: Applied Mechanics and Materials (Volumes 754-755)
• Pages: 974-978
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.754-755.974
• Online since: April 2015
• Authors: N. Alharbi, Shah Fenner Khan, O. Bretcanu, K.W. Dalgarno
• Keywords: 3D Printing, Additive Manufacturing, Apatite-Wollastonite , Implants, Scaffolds

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