Soni, R and Jhavar, S and Tyeb, S and Gupta, SK and Suwas, S and Chatterjee, K (2022) Wire Arc Additive Manufacturing of Zinc as a Degradable Metallic Biomaterial. In: Journal of Functional Biomaterials, 13 (4).
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Abstract
Wire arc additive manufacturing (WAAM) offers a high rate of material deposition among various additive manufacturing techniques with wire as feedstock material but has not been established for zinc alloys. Zn alloys can be used as degradable biomaterials, in contrast to conventional permanent metallic biomaterials. In this work, commercially pure Zn was processed by WAAM to obtain near-dense parts, and the properties obtained through WAAM-processed Zn were compared with wrought (WR) Zn samples. The microstructure and hardness values of the WAAM (41 ± 1 HV0.3) components were found to be similar to those of the WR (35 ± 2 HV0.3) components. Bulk X-ray diffraction texture measurements suggested that WAAM builds exhibit a heavily textured microstructure compared to the WR counterparts, with peak intensities around [removed] or [removed] in the directions parallel to the build direction (BD). The corrosion rates in simulated body fluid (SBF) were similar for WAAM (0.45 mmpy) and WR (0.3 mmpy) samples. The weight loss measurements in SBF were found to be marginally higher in the WAAM samples compared to the WR counterparts for a duration of up to 21 days. MC3T3-E1 preosteoblasts were found to be healthy and proliferating in the culture medium containing the degradation products from WAAM-Zn in a manner similar to WR-Zn. This work establishes the feasibility of processing Zn by WAAM for use in bioresorbable metallic implants. © 2022 by the authors.
| Item Type: | Journal Article |
|---|---|
| Publication: | Journal of Functional Biomaterials |
| Publisher: | MDPI |
| Additional Information: | The copyright for this article belongs to the Authors. |
| Keywords: | additive manufacturing; metallic biomaterials; resorbable implants; Zn implants |
| Department/Centre: | Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy) |
| Date Deposited: | 27 Jan 2023 09:20 |
| Last Modified: | 27 Jan 2023 09:20 |
| URI: | https://eprints.iisc.ac.in/id/eprint/79549 |
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