Title: Porous titanium coatings through electrophoretic deposition of TiH2 suspensions
Authors: Braem, Annabel ×
Mattheys, Tina
Neirinck, Bram
Schrooten, Jan
Van der Biest, Omer
Vleugels, Jef #
Issue Date: Jun-2011
Publisher: Wiley-VCH
Series Title: Advanced Engineering Materials vol:13 issue:6 pages:509-515
Abstract: In the biomedical field, modification of titanium surfaces to improve the osteoinductive and antibacterial behavior is widely investigated. This functionalization can be further ameliorated by providing a porous coating with high loading capacity for bioactive materials and drug delivery carriers at the implant surface. In this work, a new powder metallurgical processing route used to deposit such porous pure titanium coatings on Ti based substrates is presented. The coatings were prepared by electrophoretic deposition (EPD) of TiH2 powder suspensions followed by dehydrogenation and sintering in vacuum. The use of hydrides allowed to lower the sintering temperature below that of the alpha-beta transition of the Ti6Al4V substrate. Measurement of the tensile bond strength confirmed a strong adhesion of the porous coating. Deposition of powders with different grain sizes resulted in porous titanium coatings with varying thickness, pore morphology, and surface roughness. The possibility to extend this coating technique to complex shaped implants is highlighted.
ISSN: 1438-1656
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Physical Metallurgy and Materials Engineering Section (-)
Department of Materials Engineering - miscellaneous
× corresponding author
# (joint) last author

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