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dc.contributor.authorZeng, G
dc.contributor.authorZahiri, SH
dc.contributor.authorGulizia, S
dc.contributor.authorChen, Y
dc.contributor.authorChen, XB
dc.contributor.authorCole, I
dc.description.abstractRapid advances in 3D hybrid additive manufacturing have provided opportunities to the use of Ta as a highly effective biomaterial. In this study, we used electron beam melting (EBM) process to fabricate Ti–6Al–4V 3D structures (EBM-Ti64) and then applied cold spray additive manufacturing to deposit commercially pure (CP) Ti, Ti–Ta composite and pure Ta coatings on the EBM-Ti64 substrate to explore the biocompatibility of Ti–Ta composite structures through hybrid additive manufacturing. The microstructure, microhardness, corrosion resistance and biocompatibility were evaluated. Feedstock powders and process parameters of cold spray determine the microstructures of the deposited coating. Microhardness and indentation testing of Ti–Ta composite reveal the weight ratio of Ta influences the microhardness. In particular, higher corrosion resistance was achieved on cold sprayed Ti–30%Ta composite compared to CP Ti and pure Ta coatings. Moreover, live/dead and MTS assay demonstrate that the cold sprayed coatings were non-toxic, while the EBM-Ti64 substrate shows some cytotoxicity signs which might be related to the released toxic ions. This study confirms the biocompatible Ti–Ta composite structures can be manufactured through a combination of EBM and cold spray, opening opportunities for the rapid hybrid manufacture of biocompatible implants.en_US
dc.publisherSpringer Science and Business Media LLCen_US
dc.relation.ispartofjournalJournal of Materials Researchen_US
dc.subject.fieldofresearchCondensed Matter Physicsen_US
dc.subject.fieldofresearchMaterials Engineeringen_US
dc.subject.fieldofresearchMechanical Engineeringen_US
dc.titleHybrid additive manufacturing of biocompatible Ti–Ta composite structures for biomedical applicationsen_US
dc.typeJournal articleen_US
dc.type.descriptionC1 - Articlesen_US
dcterms.bibliographicCitationZeng, G; Zahiri, SH; Gulizia, S; Chen, Y; Chen, XB; Cole, I, Hybrid additive manufacturing of biocompatible Ti–Ta composite structures for biomedical applications, Journal of Materials Research, 2021en_US
gro.description.notepublicThis publication has been entered in Griffith Research Online as an advanced online version.en_US
gro.hasfulltextNo Full Text
gro.griffith.authorCole, Ivan

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