[en] Additive manufacturing techniques can be used to produce micro-porous structures with global morphological properties that are highly controlled through robust computer design. Despite these advantages, most of these techniques still hold several functional constraints, resulting from present technical device limits and consequently the inability to control surface morphology at a microscale level. In this study, a novel protocol for surface modification of 3D titanium alloy-based open porous structures is developed, which applies a combination of chemical etching (CHE) and electrochemical polishing (ECP) using HF-based solutions. This protocol achieves significant and controllable roughness reduction of additive manufactured 3D Ti6Al4V open porous structures. Chemical etching mainly removes the attached powder grains, while ECP further decreases the roughness. In this way the heterogeneity of the strut surface roughness throughout the full 3D structure is effectively removed.
Disciplines :
Materials science & engineering
Author, co-author :
Pyka, Grzegorz; Katholieke Univ Leuven, Dept Met & Mat Engn, B-3001 Heverlee, Belgium.
Burakowski, Andrzej; Univ Wroclaw, Fac Chem, PL-50383 Wroclaw, Poland.
Kerckhofs, Greet ; Université de Liège - ULiège > Département d'aérospatiale et mécanique > Génie biomécanique
Moesen, Maarten; Katholieke Univ Leuven, Dept Met & Mat Engn, B-3001 Heverlee, Belgium.
Schrooten, Jan; Katholieke Univ Leuven, Dept Met & Mat Engn, B-3001 Heverlee, Belgium.
Wevers, Martine; Katholieke Univ Leuven, Dept Met & Mat Engn, B-3001 Heverlee, Belgium.
Language :
English
Title :
Surface Modification of Ti6Al4V Open Porous Structures Produced by Additive Manufacturing
Publication date :
2012
Journal title :
Advanced Engineering Materials
ISSN :
1438-1656
eISSN :
1527-2648
Publisher :
Wiley-V C H Verlag Gmbh, Weinheim, Germany
Volume :
14
Issue :
6
Pages :
363-370
Peer reviewed :
Peer Reviewed verified by ORBi
Name of the research project :
G.0618.10
Funders :
FWO - Fonds Wetenschappelijk Onderzoek Vlaanderen [BE] Agency for Innovation by Science and Technology in Flanders KU Leuven - Katholieke Universiteit Leuven [BE]
Funding text :
agency for Innovation by Science and Technology in Flanders [IWT/OZM/090655, IWT/OZM/080436]
Commentary :
Grzegorz Pyka was funded by the Research Foundation - Flanders (FWO, G.0618.10). Greet Kerckhofs and Maarten Moesen were funded by the agency for Innovation by Science and Technology in Flanders (IWT/OZM/090655 and IWT/OZM/080436). Andrzej Burakowski was funded by the Katholieke Universiteit Leuven in the frame of an F+ Fellowship (F+/09/002).
S. Youssef, E. Maire, R. Gaertner, Acta Mater. 2005, 53, 719.
S. J. Hollister, Nat. Mater. 2005, 4, 518.
S. J. Simske, R. A. Ayers, T. A. Bateman, Mater. Sci. Forum 1997, 250, 151.
E. Yasa, J. P. Kruth, J. Deckers, CIRP Ann.-Manuf. Technol. 2011, 60, 263.
K. Kempen, E. Yasa, L. Thijs, J. P. Kruth, J. Van Humbeeck, Phys. Procedia 2011, 12, 255.
S. Van Bael, G. Kerckhofs, M. Moesen, G. Pyka, J. Schrooten, J. P. Kruth, Mater. Sci. Eng., A 2011, 528, 7423.
J.-P. Kruth, G. Levy, F. Klocke, T. H. C. Childs, CIRP Ann.-Manuf. Technol. 2007, 56, 730.
X. Li, C. Wang, W. Zhang, Y. Li, Mater. Lett. 2009, 63, 403.
L. E. Murr, K. N. Amato, S. J. Li, Y. X. Tian, X. Y. Cheng, S. M. Gaytan, E. Martinez, P. W. Shindo, F. Medina, R. B. Wicker, J. Mech. Behav. Biomed. Mater. 2011, 4, 1396.
T. B. F. Woodfield, J. Malda, J. de Wijn, F. Péters, J. Riesle, C. A. van Blitterswijk, Biomaterials 2004, 25, 4149.
L. C. Zhang, D. Klemm, J. Eckert, Y. L. Hao, T. B. Sercombe, Scr. Mater. 2011, 65, 21.
G. Pyka, G. Kerckhofs, S. Van Bael, M. Moesen, D. Loeckx, J. Schrooten, M. Wevers, European Conference for Non-Destructive Testing (ECNDT), Moscow, Russia, 7-11 June 2010
X. Liu, P. Chu, C. Ding, Mater. Sci. Eng., R 2004, 47, 49.
A. Bloyce, P. H. Morton, T. Bell, ASM Handbook, Vol. 5, ASM International, Metals Park, Cleveland, OH 1994.
G. Nawrat, W. Simka, Przemysł Chemiczny 2003, 82, 851.
A. Kuhn, Met. Finish. Inf. 2004, 120, 80.
D. B. Percival, A. T. Walden, Spectral Analysis for Physical Applications: Multitaper and Conventional Univariate Techniques, University Press, UK 1993.
G. Kerckhofs, J. Schrooten, T. Van Cleynenbreugel, S. V. Lomov, M. Wevers, Rev. Sci. Instrum. 2008, 79, 013711.