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Investigating the feasibility of preparing metal-ceramic multi-layered composites using only the aerosol-deposition technique
ID Šadl, Matej (Author), ID Tomc, Urban (Author), ID Uršič Nemevšek, Hana (Author)

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Abstract
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 Al$_2$O$_3$/Al/Al$_2$O$_3$/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 Al$_2$O$_3$ dielectric layer provides excellent electrical resistance (i.e., 7.7 × 10$^{12}$ Ω·m), which is required for reliable electric field applications.

Language:English
Keywords:aerosol deposition, multi-layered composites, interdigitated aluminium electrodes, alumina insulating layers
Work type:Article
Typology:1.01 - Original Scientific Article
Organization:FS - Faculty of Mechanical Engineering
Publication status:Published
Publication version:Version of Record
Year:2021
Number of pages:10 str.
Numbering:Vol. 14, iss. 16, art. 4548
PID:20.500.12556/RUL-135970 This link opens in a new window
UDC:621.79:62-419:544.772
ISSN on article:1996-1944
DOI:10.3390/ma14164548 This link opens in a new window
COBISS.SI-ID:72970755 This link opens in a new window
Publication date in RUL:05.04.2022
Views:534
Downloads:101
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Record is a part of a journal

Title:Materials
Shortened title:Materials
Publisher:MDPI
ISSN:1996-1944
COBISS.SI-ID:33588485 This link opens in a new window

Licences

License:CC BY 4.0, Creative Commons Attribution 4.0 International
Link:http://creativecommons.org/licenses/by/4.0/
Description:This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.
Licensing start date:13.08.2021

Secondary language

Language:Slovenian
Keywords:aerosolno nanašanje, večslojni kompoziti, povezane aluminijeve elektrode, aluminijevi izolirni sloji

Projects

Funder:Other - Other funder or multiple funders
Funding programme:Jožef Stefan Institute, Director’s fund
Acronym:ULTRACOOL

Funder:ARRS - Slovenian Research Agency
Project number:N2-0212
Name:Večkalorični elementi za okolju prijazne hladilne sisteme

Funder:ARRS - Slovenian Research Agency
Funding programme:Young researchers
Project number:PR-08977

Funder:ARRS - Slovenian Research Agency
Project number:Z2-9247
Name:Digitalna mikrofluidika v magnetokaloričnem hlajenju

Funder:ARRS - Slovenian Research Agency
Project number:P2-0105
Name:Elektronska keramika, nano, 2D in 3D strukture

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