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Shungite – a carbon-mineral rock material: Its sinterability and possible applications

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2019
Obradovic_PAC_13_2019_89-97.pdf (2.518Mb)
Authors
Obradović, Nina
Gigov, Mihajlo
Đorđević, Aleksandar
Kern, Frank
Dmitrović, S.
Matović, Branko
Ðorđević, Antonije
Tshantshapanyan, Ani
Vlahović, Branislav
Petrović, Predrag
Pavlović, Vladimir B.
Article (Published version)
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Abstract
The paper presents results of the influence of mechanical activation of shungite, a carbon-mineral rock material rich in silica and carbon, on its sintering behaviour, and obtaining of pure SiC ceramics. The mechanical activation of the starting powder was performed in a high-energy ball mill in time intervals from 30 to 480 min. The phase composition of the starting powders and sintered samples was analysed by the X-ray diffraction method. The first traces of SiC were detected after sintering at 1350 °C for 2 h in an Ar atmosphere, along with traces of unreacted SiO2. The scanning electron microscopy was performed in order to determine changes in the microstructure. Sintering was performed at various temperatures for 2 h, in an Ar atmosphere and a vacuum. Dielectric properties of the sintered samples were measured in the frequency range from 1 to 500 MHz. The obtained results indicate that the sintered powder is a good candidate for applications as an absorber of electromagnetic waves... in microwave engineering. © 2019 University of Novi Sad, Faculty of Technology. All rights reserved.

Keywords:
carbon-mineral rock material / mechanical activation / SEM / sintering / XRD
Source:
Processing and Application of Ceramics, 2019, 13, 1, 89-97
Publisher:
  • Novi Sad : Faculty of Technology, University of Novi Sad
Funding / projects:
  • Functional, Functionalized and Advanced Nanomaterials (RS-45005)
  • Directed synthesis, structure and properties of multifunctional materials (RS-172057)

DOI: 10.2298/PAC1901089O

ISSN: 1820-6131

WoS: 000462902100010

Scopus: 2-s2.0-85070721263
[ Google Scholar ]
6
6
Handle
https://hdl.handle.net/21.15107/rcub_dais_6372
URI
https://dais.sanu.ac.rs/123456789/6372
Collections
  • ИТН САНУ - Општа колекција / ITS SASA - General collection
Institution/Community
Институт техничких наука САНУ / Institute of Technical Sciences of SASA
TY  - JOUR
AU  - Obradović, Nina
AU  - Gigov, Mihajlo
AU  - Đorđević, Aleksandar
AU  - Kern, Frank
AU  - Dmitrović, S.
AU  - Matović, Branko
AU  - Ðorđević, Antonije
AU  - Tshantshapanyan, Ani
AU  - Vlahović, Branislav
AU  - Petrović, Predrag
AU  - Pavlović, Vladimir B.
PY  - 2019
UR  - https://dais.sanu.ac.rs/123456789/6372
AB  - The paper presents results of the influence of mechanical activation of shungite, a carbon-mineral rock material rich in silica and carbon, on its sintering behaviour, and obtaining of pure SiC ceramics. The mechanical activation of the starting powder was performed in a high-energy ball mill in time intervals from 30 to 480 min. The phase composition of the starting powders and sintered samples was analysed by the X-ray diffraction method. The first traces of SiC were detected after sintering at 1350 °C for 2 h in an Ar atmosphere, along with traces of unreacted SiO2. The scanning electron microscopy was performed in order to determine changes in the microstructure. Sintering was performed at various temperatures for 2 h, in an Ar atmosphere and a vacuum. Dielectric properties of the sintered samples were measured in the frequency range from 1 to 500 MHz. The obtained results indicate that the sintered powder is a good candidate for applications as an absorber of electromagnetic waves in microwave engineering. © 2019 University of Novi Sad, Faculty of Technology. All rights reserved.
PB  - Novi Sad : Faculty of Technology, University of Novi Sad
T2  - Processing and Application of Ceramics
T1  - Shungite – a carbon-mineral rock material: Its sinterability and possible applications
SP  - 89
EP  - 97
VL  - 13
IS  - 1
DO  - 10.2298/PAC1901089O
UR  - https://hdl.handle.net/21.15107/rcub_dais_6372
ER  - 
@article{
author = "Obradović, Nina and Gigov, Mihajlo and Đorđević, Aleksandar and Kern, Frank and Dmitrović, S. and Matović, Branko and Ðorđević, Antonije and Tshantshapanyan, Ani and Vlahović, Branislav and Petrović, Predrag and Pavlović, Vladimir B.",
year = "2019",
abstract = "The paper presents results of the influence of mechanical activation of shungite, a carbon-mineral rock material rich in silica and carbon, on its sintering behaviour, and obtaining of pure SiC ceramics. The mechanical activation of the starting powder was performed in a high-energy ball mill in time intervals from 30 to 480 min. The phase composition of the starting powders and sintered samples was analysed by the X-ray diffraction method. The first traces of SiC were detected after sintering at 1350 °C for 2 h in an Ar atmosphere, along with traces of unreacted SiO2. The scanning electron microscopy was performed in order to determine changes in the microstructure. Sintering was performed at various temperatures for 2 h, in an Ar atmosphere and a vacuum. Dielectric properties of the sintered samples were measured in the frequency range from 1 to 500 MHz. The obtained results indicate that the sintered powder is a good candidate for applications as an absorber of electromagnetic waves in microwave engineering. © 2019 University of Novi Sad, Faculty of Technology. All rights reserved.",
publisher = "Novi Sad : Faculty of Technology, University of Novi Sad",
journal = "Processing and Application of Ceramics",
title = "Shungite – a carbon-mineral rock material: Its sinterability and possible applications",
pages = "89-97",
volume = "13",
number = "1",
doi = "10.2298/PAC1901089O",
url = "https://hdl.handle.net/21.15107/rcub_dais_6372"
}
Obradović, N., Gigov, M., Đorđević, A., Kern, F., Dmitrović, S., Matović, B., Ðorđević, A., Tshantshapanyan, A., Vlahović, B., Petrović, P.,& Pavlović, V. B.. (2019). Shungite – a carbon-mineral rock material: Its sinterability and possible applications. in Processing and Application of Ceramics
Novi Sad : Faculty of Technology, University of Novi Sad., 13(1), 89-97.
https://doi.org/10.2298/PAC1901089O
https://hdl.handle.net/21.15107/rcub_dais_6372
Obradović N, Gigov M, Đorđević A, Kern F, Dmitrović S, Matović B, Ðorđević A, Tshantshapanyan A, Vlahović B, Petrović P, Pavlović VB. Shungite – a carbon-mineral rock material: Its sinterability and possible applications. in Processing and Application of Ceramics. 2019;13(1):89-97.
doi:10.2298/PAC1901089O
https://hdl.handle.net/21.15107/rcub_dais_6372 .
Obradović, Nina, Gigov, Mihajlo, Đorđević, Aleksandar, Kern, Frank, Dmitrović, S., Matović, Branko, Ðorđević, Antonije, Tshantshapanyan, Ani, Vlahović, Branislav, Petrović, Predrag, Pavlović, Vladimir B., "Shungite – a carbon-mineral rock material: Its sinterability and possible applications" in Processing and Application of Ceramics, 13, no. 1 (2019):89-97,
https://doi.org/10.2298/PAC1901089O .,
https://hdl.handle.net/21.15107/rcub_dais_6372 .

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