Scientific journal
Название журнала на английском
ISSN 2500-0802
ПИ №ФС77-61154

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PLASMADYNAMIC SYNTHESIS OF GRAPHITE-LIKE PHASES IN THE CARBON-NITROGEN SYSTEM

Sivkov A.A. 1 Pak A.Y. 1 Nikitin D.S. 1 Shanenkov I.I. 1
1 National Research Tomsk Polytechnic University
The research results on the direct plasma dynamic synthesis of ultrafine phases in the C-N system are shown. Experiments were carried out at different values of supplied energy in the nitrogen atmosphere by using a coaxial magneto plasma accelerator with the carbon accelerating channel and tungsten central electrode. The research results of synthesized product by several modern analytical techniques are shown. According to X-ray diffractometry and transmission electron microscopy data the product contains a phase closed to the calculation model of the hexagonal syngony carbon nitride h-C3N4. Furthermore, in the obtained powder pure carbon structures, dominated by content, in the form of multilayer nanotubes and ultrafine graphite and impurity phases of tungsten carbide were found. The presence of tungsten carbide phases is connected with central electrode material electro erosion. Comparing analytical data of two experiments it can be concluded that it is possible to decrease the content of carbon multilayer nanotubes phases by changing parameters of coaxial magneto plasma accelerator pulse supply.