Enhancing the Biocompatibility of Additively Manufactured Ti‐6al‐4 V Eli with Diamond‐Like Carbon Coating

Author:

Yick Samuel12ORCID,Reneman Jake3,Martin Philip J.4,Evans Margaret D.M.5ORCID,Bean Penelope A.5,Söhnel Tilo12ORCID,Tse Nicholas M. K.3ORCID,Bendavid Avi46ORCID

Affiliation:

1. School of Chemical Science University of Auckland Auckland 1010 New Zealand

2. MacDiarmid Institute of Advanced Materials & Nanotechnology Wellington 6140 New Zealand

3. School of Engineering Faculty of Science and Engineering Macquarie University Sydney NSW 2109 Australia

4. CSIRO Manufacturing PO Box 218 Lindfield Sydney NSW 2070 Australia

5. CSIRO Manufacturing North Ryde Sydney NSW 2113 Australia

6. School of Materials Science and Engineering University of New South Wales Kensington Sydney NSW 2052 Australia

Abstract

AbstractOrthopedic implants provide patients with an opportunity to regain functionality lost from illness, disease, or injury. Recent advancements in additive manufacturing (AM) techniques have allowed for the increased customization of Ti‐6Al‐4V ELI (extra low interstitials) implants to complement natural variations in the human anatomy. Yet, the low bioactivity of Ti‐6Al‐4 V ELI and possible adverse effects from the leeching of aluminum and vanadium complicate the post‐operation recovery process. In this work, Ti‐6Al‐4 V ELI samples are printed using the electron beam melt technique in two directions and coated with diamond‐like carbon (DLC) to examine whether their biological properties can be improved. By conducting in vitro studies with Saos‐2 osteosarcoma cells, the effects of morphology and surface chemistry are correlated to the bioactivities of the coated and uncoated samples. The outcome of the study suggested that DLC coating is a viable method for controlling the surface bioactivity of a material. It indicates that a carbon coating, along with an appropriate topography, has the potential to promote the proliferation and maturity of bone cells and hence enhance the performance of additively manufactured products in next‐generation biomedical applications.

Funder

Macquarie University

Publisher

Wiley

Subject

Mechanical Engineering,Mechanics of Materials

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