Matej Šadl (Author), Urban Tomc (Author), Hana Uršič (Author)

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 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 x 10(na)12 (omega) . m), which is required for reliable electric field applications.

Keywords

aerosol deposition;multi-layered composites;interdigitated aluminium electrodes;alumina insulating layers;

Data

Language: English
Year of publishing:
Typology: 1.01 - Original Scientific Article
Organization: UL FS - Faculty of Mechanical Engineering
UDC: 621.79:62-419:544.772
COBISS: 72970755 Link will open in a new window
ISSN: 1996-1944
Views: 157
Downloads: 55
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Other data

Secondary language: Slovenian
Secondary keywords: aerosolno nanašanje;večslojni kompoziti;povezane aluminijeve elektrode;aluminijevi izolirni sloji;
Type (COBISS): Article
Pages: str. 1-10
Volume: ǂVol. ǂ14
Issue: ǂiss. ǂ16
Chronology: Aug. 2021
DOI: 10.3390/ma14164548
ID: 14947332