Priprava večslojnih kovinsko-keramičnih kompozitov z uporabo tehnike aerosolnega nanašanja

Skupaj z raziskovalci Inšituta Jožef Stefan smo objavili raziskavo o pripravi večslojnih kovinsko-keramičnih kompozitov z uporabo tehnike aerosolnega nanašanja. Članek je objavljen v reviji Materials.

Članek je na voljo na sledeči povezavi:

https://pubmed.ncbi.nlm.nih.gov/34443071/

Povzetek

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.