Abstract
Present paper reports on the results of surface modification of the additively manufactured porous Ti6Al4V scaffolds. Radio frequency (RF) magnetron sputtering was used to modify the surface of the alloy via deposition of the biocompatible hydroxyapatite (HA) coating. The surface morphology, chemical and phase composition of the HA-coated alloy were studied. It was revealed that RF magnetron sputtering allows preparing a homogeneous HA coating onto the entire surface of scaffolds.
Highlights
Modern additive manufacturing (AM) is already using a wide variety of very different materials including metals
The majority of the studies were performed with relatively planar sample surfaces
One of the serious concerns was due to the fact that electric fields in the conductive lattices drops dramatically when moving from outer to inner layers, which can completely prevent the coating of the deeper structure layers with the electrochemical and plasmabased methods
Summary
Modern additive manufacturing (AM) is already using a wide variety of very different materials including metals. One of the application areas where the advantages of additive manufacturing can be successfully used is biomedicine. In particular this technology allows for better operation planning and manufacturing functionalised implants fit to the particular clinical case [1,2,3]. Metallic additively manufactured implants can successfully replicate the complex microstructure of the substituted bones by integrating porous sections into monolithic implants improving the implant integration process and its long term stability in the body [3,4,5]. In many cases, when materials used for the metallic implants manufacturing are bioinert additional surface coatings can significantly improve the osseointegration [6,7,8,9]. Present work is devoted to the investigation of the morphology and phase composition of the coatings based on hydroxyapatite (HA) deposited on Ti64 scaffolds by RF-magnetron sputtering
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