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Investigating the Feasibility of Preparing Metal–Ceramic Multi-Layered Composites Using Only the Aerosol-Deposition Technique

by 1,2, 3 and 1,2,*
1
Electronic Ceramics Department, Jožef Stefan Institute, Jamova Cesta 39, 1000 Ljubljana, Slovenia
2
Jožef Stefan International Postgraduate School, Jamova Cesta 39, 1000 Ljubljana, Slovenia
3
Laboratory for Refrigeration and District Energy, Faculty of Mechanical Engineering, University of Ljubljana, Aškerčeva Cesta 6, 1000 Ljubljana, Slovenia
*
Author to whom correspondence should be addressed.
Academic Editor: Katarzyna Berent
Materials 2021, 14(16), 4548; https://doi.org/10.3390/ma14164548
Received: 5 July 2021 / Revised: 6 August 2021 / Accepted: 10 August 2021 / Published: 13 August 2021
(This article belongs to the Special Issue Novel Metal-Ceramic Composites)
The preparation of metal–ceramic layered composites remains a challenge due to the incompatibilities of the materials at the high temperatures of the co-firing process. For densification, the ceramic thick-film materials must be subjected to high-temperature annealing (usually above 900 °C), which can increase the production costs and limit the use of substrate or co-sintering materials with a low oxidation resistance and a low melting point, such as metals. To overcome these problems, the feasibility of preparing dense, defect-free, metal–ceramic multilayers with a room-temperature-based method should be investigated. In this study, we have shown that the preparation of ceramic–metal Al2O3/Al/Al2O3/Gd multilayers using aerosol deposition (AD) is feasible and represents a simple, reliable and cost-effective approach to substrate functionalisation and protection. Scanning electron microscopy of the multilayers showed that all the layers have a dense, defect-free microstructure and good intra-layer connectivity. The top Al2O3 dielectric layer provides excellent electrical resistance (i.e., 7.7 × 1012 Ω∙m), which is required for reliable electric field applications. View Full-Text
Keywords: aerosol deposition; multilayers; interdigitated aluminium electrodes; alumina insulating layers aerosol deposition; multilayers; interdigitated aluminium electrodes; alumina insulating layers
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MDPI and ACS Style

Sadl, M.; Tomc, U.; Ursic, H. Investigating the Feasibility of Preparing Metal–Ceramic Multi-Layered Composites Using Only the Aerosol-Deposition Technique. Materials 2021, 14, 4548. https://doi.org/10.3390/ma14164548

AMA Style

Sadl M, Tomc U, Ursic H. Investigating the Feasibility of Preparing Metal–Ceramic Multi-Layered Composites Using Only the Aerosol-Deposition Technique. Materials. 2021; 14(16):4548. https://doi.org/10.3390/ma14164548

Chicago/Turabian Style

Sadl, Matej, Urban Tomc, and Hana Ursic. 2021. "Investigating the Feasibility of Preparing Metal–Ceramic Multi-Layered Composites Using Only the Aerosol-Deposition Technique" Materials 14, no. 16: 4548. https://doi.org/10.3390/ma14164548

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