Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7851536 | Carbon | 2015 | 9 Pages |
Abstract
The hot-pressing step was necessary to force orientation of the flakes and to densify the material. Microstructural observations, mechanical strength and elastic properties assessment, as well as thermal and electrical properties analysis were performed. Scanning electron microscopy revealed that microstructure of the material consisted of highly-oriented layers of the graphene flakes. It resulted in a distinct anisotropy of thermal conductivity (360 vs. 3 W/mK), coefficient of thermal expansion (25·10â6 vs. â1·10â6 1/K) and electrical resistivity (60·10â6 vs. 850·10â6 Ω m) of the material in the in-plane and through plane direction, respectively. The material showed brittle behavior, but it could be machined.
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Physical Sciences and Engineering
Energy
Energy (General)
Authors
Åukasz Zych, PaweÅ Rutkowski, LudosÅaw Stobierski, Dariusz Zientara, Krzysztof Mars, Wojciech Piekarczyk,