Investigating the feasibility of preparing metal-ceramic multi-layered composites using only the aerosol-deposition technique

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:	2021
Typology:	1.01 - Original Scientific Article
Organization:	UL FS - Faculty of Mechanical Engineering
UDC:	621.79:62-419:544.772
COBISS:	72970755
ISSN:	1996-1944
Views:	157
Downloads:	55
Average score:	0 (0 votes)
Metadata:

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