Abstract
In the current work, depth-sensing indentation tests were applied at different coals microcomponents in order to characterize their mechanical properties. To this end, three coals were chosen differing by their rank and properties. Thin transparent films of such coals were prepared as samples in order to use transmitted light microscopy to achieve exact positioning of indent probe in the zone occupied by specific coal microcomponent. Experimental procedures allowed obtaining load-displacement curves at different microcomponents. These curves revealed differences between microcomponent vitrinite behavior among coals of different types. Measured values of elastic moduli and hardness also proved that they variate with coal rank. It was concluded that matrix of coals (vitrinite microcomponent) transforms its mechanical properties with rank, whereas the inclusions properties do not change as significantly.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Jiang, H., Du, C., Dong, J.: Investigation of rock cutting dust formation and suppression using water jets during mining. Powder Technol. 307, 99–108 (2017). https://doi.org/10.1016/j.powtec.2016.11.029
Balokhonov, R.B., Romanova, V.A., Makarov, R.V., Voroshilov, S.P.: Effect of complex interface geometry on deformation of a coal composite. Numerical simulation. Fiz. mezomechanica 10, 75–79 (2007)
Palacio, M.L.B., Bhushan, B.: Depth-sensing indentation of nanomaterials and nanostructures. Mater. Charact. 78, 1–20 (2013). https://doi.org/10.1016/j.matchar.2013.01.009
Bull, S.J.: Nanoindentation of coatings. J. Phys. D. Appl. Phys. 38, R393–R413 (2005). https://doi.org/10.1088/0022-3727/38/24/R01
Konopka, K.: Crack propagation in composites with ceramic matrix. In: IUTAM Symposium on Multiscale Modelling of Damage and Fracture Processes in Composite Materials, vol. 135, pp. 255–262 (2006). https://doi.org/10.1007/1-4020-4566-2_30
Epshtein, S.A., Borodich, F.M., Bull, S.J.: Evaluation of elastic modulus and hardness of highly inhomogeneous materials by nanoindentation. Appl. Phys. A Mater. Sci. Process. 119, 325–335 (2015). https://doi.org/10.1007/s00339-014-8971-5
Borodich, F.M., Bull, S.J., Epshtein, S.A.: Nanoindentation in studying mechanical properties of heterogeneous materials. J. Min. Sci. 51, 1062–7391 (2015). https://doi.org/10.1134/S1062739115030072
Oliver, W.C., Pharr, G.M.: An improved technique for determining hardness and elastic modulus using load and displacement sensing indentation experiments. J. Mater. Res. 7, 1564–1583 (1992). https://doi.org/10.1557/JMR.1992.1564
Bulychev, S.I., Alekhin, V.P., Shorshorov, M.K., Ternovskij, A.P., Shnyrev, G.D.: Determination of Young modulus by the hardness indentation diagram. Zavod. Lab. 41, 1137–1140 (1975). (in Russian)
Kossovich, E.L., Borodich, F.M., Bull, S.J., Epshtein, S.A.: Substrate effects and evaluation of elastic moduli of components of inhomogeneous films by nanoindentation. Thin Solid Films 619, 11–119 (2016). https://doi.org/10.1016/j.tsf.2016.11.018
Acknowledgements
The work was supported by the Russian Science Foundation (grant No. 16-17-10217).
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2018 Springer International Publishing AG, part of Springer Nature
About this paper
Cite this paper
Kossovich, E., Epshtein, S., Dobryakova, N., Minin, M., Gavrilova, D. (2018). Mechanical Properties of Thin Films of Coals by Nanoindentation. In: Karev, V., Klimov, D., Pokazeev, K. (eds) Physical and Mathematical Modeling of Earth and Environment Processes. PMMEEP 2017. Springer Geology. Springer, Cham. https://doi.org/10.1007/978-3-319-77788-7_6
Download citation
DOI: https://doi.org/10.1007/978-3-319-77788-7_6
Published:
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-77787-0
Online ISBN: 978-3-319-77788-7
eBook Packages: Earth and Environmental ScienceEarth and Environmental Science (R0)