Structural Features of the Carbon Material Synthesized by Plasma-Arc Method at Low Buffer Gas Pressure

Abstract:

The carbon material was synthesized by the plasma-arc method at the buffer gas pressure of 3 Torr. The material has physical properties different from the properties of the material synthesized at pressure of 25 Torr and higher. The low pressure of buffer gas leads to formation of materials consisting of carbon nanoparticles with average size lower than 10nm. The nanoparticles have form of carbon globules, which consist of the graphite-like structure. This structure is the composition of the stacked, twisted and closed nanofragments of graphene. The dominating interlayer distance in the structure is 0.4 nm. The dominating size of crystallinity La is 2.7nm. The graphite-like structure allows to enhance the electrical conductivity in compare with the material synthesized at buffer gas pressure of 25 Torr and higher. Nevertheless the conductivity of the material is significantly lower than the conductivity of pure graphite because of the contact resistance arising from the presence of the outer layer of amorphous carbon on some globules and the presence of the globules of fully amorphous carbon.

• Periodical: Applied Mechanics and Materials (Volume 864)
• Pages: 36-41
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.864.36
• Online since: April 2017
• Authors: Alexey V. Zaikovskii*
• Keywords: Arc-Discharge, Carbon, Electrical Conductivity, Graphene, Nanographite

References

[1] H. W. Kroto, J. R. Heath, S. C. O'Brien, R. F. Curl, R. E. Smalley, C60: Buckminsterfullerene, Nature, 318 (1985) 162-163.

DOI: 10.1038/318162a0

[2] D. Afanasyev, I. Blinov, A. Bogdanov, G. Dyuzhev, V. Karataev, A. Kruglikov, Formation of fullerenes in arc discharge, Tech. Phys. J. 64(10) (1994) 76-90.

[3] S. Iijima, Helical microtubules of graphitic carbon, Nature, 354 (1991) 56-58.

DOI: 10.1038/354056a0

[4] J. H. J. Scott, S. A. Majetich, Morphology, structure, and growth of nanoparticles produced in a carbon arc, Phys. Rev. B 52(17) (1995) 12564-12571.

DOI: 10.1103/physrevb.52.12564

[5] A. V. Zaikovskii, V. A. Mal'tsev, S. A. Novopashin, Synthesis of tungsten carbide nanoparticles in WO3 pyrolysis in a plasma arc, J. Eng. Thermophys. 22(1) (2013) 77-85.

DOI: 10.1134/s1810232813010098

[6] M. Creyssels, E. Falcon, B. Castaing, Scaling of ac electrical conductivity of powders under compression, Phys. Rev. B 77 (2008) 075135.

DOI: 10.1103/physrevb.77.075135

[7] H. Fröhlich, The specific heat of the electrons of small metal particles at low temperature, Physica, 4 (1937) 406-412.

[8] R. Kubo, Electronic Properties of Metallic Fine Particles, J. Phys. Soc. Japan, 17(6) (1962) 975-986.

DOI: 10.1143/jpsj.17.975

[9] E. Abrahams, P. W. Anderson, D. C. Licciardello, T. V. Ramakrishnan, Scaling Theory of Localization: Absence of Quantum Diffusion in Two Dimensions, Phys, Rev. Lett. 42 (1979) 673-676.

DOI: 10.1103/physrevlett.42.673

[10] O. A. Nerushev, G. I. Sukhinin, Kinetics of fullerene formation by electric-arc vaporization of graphite, Tech. Phys. 42(2) (1997) 160-167.

DOI: 10.1134/1.1258821

[11] A. E. Belikov, A. V. Zaikovsky, V. A. Maltsev, et al. The properties of carbon-carbonic condensate synthesized in the plasma arc, Thermophys. Aeromech. 16(4) (2009) 647-650.

DOI: 10.1134/s0869864309040155

[12] A. C. Ferrari, J. Robertson, Interpretation of Raman spectra of disordered and amorphous carbon, Phys. Rev. B 61(20) (2000) 14095-14107.

DOI: 10.1103/physrevb.61.14095

[13] A. Cuesta, P. Dhamelincourt, J. Laureyns, A. Martinez-Alonso, J. M. D. Tascon, Raman microprobe studies on carbon materials, Carbon, 32(8) (1994) 1523-1532.

DOI: 10.1016/0008-6223(94)90148-1

[14] B. Dippel, H. Jander, J. Heintzenberg, NIR FT Raman spectroscopicstudy of flame soot, Phys. Chem. Chem. Phys. 1(20) (1999) 4707-4712.

DOI: 10.1039/a904529e