Articles | Volume 45
https://doi.org/10.5194/adgeo-45-73-2018
https://doi.org/10.5194/adgeo-45-73-2018
07 Aug 2018
 | 07 Aug 2018

Nanoindentation study of macerals in coals from the Ukrainian Donets Basin

Sanja Vranjes, David Misch, Thomas Schöberl, Daniel Kiener, Doris Gross, and Reinhard F. Sachsenhofer

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Latest update: 27 Mar 2024
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Short summary
Macerals are the constituents of coal and usually have a small size (e.g. micro-scaled). Therefore, we used nanoindentation to determine material parameters like hardness and reduced elastic modulus from macerals in well examined coals from the Ukrainian Donets Basin. Our main goal was to study the relationship of these parameters with increasing rank of coal. The results indicate that multiple factors control the mechanical properties of macerals (e.g. microstructure, depositional environment).