Materials 2013, 6(10), 4737-4757; doi:10.3390/ma6104737
Article

Surface Roughness and Morphology Customization of Additive Manufactured Open Porous Ti6Al4V Structures

1,2,* email, 1,2,3email, 2,4email, 5email, 1,2email and 1email
Received: 30 August 2013; in revised form: 8 October 2013 / Accepted: 15 October 2013 / Published: 22 October 2013
(This article belongs to the Special Issue Titanium Materials for Biomedical Application 2013)
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract: Additive manufacturing (AM) is a production method that enables the building of porous structures with a controlled geometry. However, there is a limited control over the final surface of the product. Hence, complementary surface engineering strategies are needed. In this work, design of experiments (DoE) was used to customize post AM surface treatment for 3D selective laser melted Ti6Al4V open porous structures for bone tissue engineering. A two-level three-factor full factorial design was employed to assess the individual and interactive effects of the surface treatment duration and the concentration of the chemical etching solution on the final surface roughness and beam thickness of the treated porous structures. It was observed that the concentration of the surface treatment solution was the most important factor influencing roughness reduction. The designed beam thickness decreased the effectiveness of the surface treatment. In this case study, the optimized processing conditions for AM production and the post-AM surface treatment were defined based on the DoE output and were validated experimentally. This allowed the production of customized 3D porous structures with controlled surface roughness and overall morphological properties, which can assist in more controlled evaluation of the effect of surface roughness on various functional properties.
Keywords: Ti6Al4V scaffolds; selective laser melting; surface roughness; surface modification; biomaterials
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MDPI and ACS Style

Pyka, G.; Kerckhofs, G.; Papantoniou, I.; Speirs, M.; Schrooten, J.; Wevers, M. Surface Roughness and Morphology Customization of Additive Manufactured Open Porous Ti6Al4V Structures. Materials 2013, 6, 4737-4757.

AMA Style

Pyka G, Kerckhofs G, Papantoniou I, Speirs M, Schrooten J, Wevers M. Surface Roughness and Morphology Customization of Additive Manufactured Open Porous Ti6Al4V Structures. Materials. 2013; 6(10):4737-4757.

Chicago/Turabian Style

Pyka, Grzegorz; Kerckhofs, Greet; Papantoniou, Ioannis; Speirs, Mathew; Schrooten, Jan; Wevers, Martine. 2013. "Surface Roughness and Morphology Customization of Additive Manufactured Open Porous Ti6Al4V Structures." Materials 6, no. 10: 4737-4757.


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