Goulas, A. orcid.org/0000-0002-4203-8547, Whittaker, T. orcid.org/0000-0001-8099-273X, Chi-Tangyie, G. et al. (4 more authors) (2023) Multi-material additive manufacture and microwave-assisted sintering of a metal/ceramic metamaterial antenna structure. Applied Materials Today, 33. 101878. ISSN 2352-9407
Abstract
Multi-material metal/ceramic 3D structures comprising of metallic silver and ultra-low sintering temperature silver molybdenum oxide ceramics, have been additively manufactured and hybrid densified using microwave-assisted sintering for the first time. Optimum densification conditions at 440 °C / 1 h, resulted in relative permittivity, εr = 10.99 ± 0.04, dielectric losses, tanδ = 0.005 ± 0.001 and microwave quality factor, Q × f = 2597 ± 540 GHz. Applying 2 kW microwave energy at 2.45 GHz for 60 min, was proven sufficient, to densify the metallic Ag infilling electrodes, without causing any macroscopic defects. A fully functional multi-layered antenna structure with a metamaterial artificial magnetic conductor was designed, dual-printed and densified, to showcase the potential of combining multi-material additive manufacturing with microwave-assisted sintering.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2023 The Authors. Published by Elsevier Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution Licence (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
Keywords: | Multi material additive manufacturing; Metal/ceramic structures; Microwave sintering; Metamaterials |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Materials Science and Engineering (Sheffield) |
Funding Information: | Funder Grant number ENGINEERING AND PHYSICAL SCIENCE RESEARCH COUNCIL EP/N010493/1 |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 31 Jul 2023 09:49 |
Last Modified: | 31 Jul 2023 09:49 |
Published Version: | http://dx.doi.org/10.1016/j.apmt.2023.101878 |
Status: | Published |
Publisher: | Elsevier BV |
Refereed: | Yes |
Identification Number: | 10.1016/j.apmt.2023.101878 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:201968 |