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Title: Optimization of the TiB2 plasma dynamic synthesis
Authors: Sivkov, Aleksandr Anatolyevich
Pogorelova, Sofjya Olegovna
Nasyrbaev, Artur
Nikitin, Dmitry Sergeevich
Keywords: плазменный синтез; наночастицы; оптимизация; графитизация
Issue Date: 2018
Publisher: IOP Publishing
Citation: Optimization of the TiB2 plasma dynamic synthesis / A. A. Sivkov [et al.] // Journal of Physics: Conference Series. — 2018. — Vol. 1115 : 6th International Congress "Energy Fluxes and Radiation Effects"14th International Conference on Modification of Materials with Particle Beams and Plasma Flows (14th CMM) : [proceedings], 16-22 September 2018, Tomsk, Russian Federation. — [032090, 5 p.].
Abstract: Titanium Diboride (TiB2) nanoparticles were obtained by plasma dynamic synthesis in a hypersonic plasma jet. The aim of the work was to optimize synthesis of TiB2 nanoparticles. Firstly, three series of experiments with different ways of a discharge initiation were implemented: 1) using titanium conductors; 2) using carbon fibers; 3) using graphite aerosol (graphitization). Secondly, experiments with different atmosphere gas, which filled the volume of the reactor chamber - Ar and N2 were implemented. Thirdly, there were experiments with different mass ratio of Ti:B precursors using graphitization (26.7:73.3; 45.5:54.5; 61.1:38.9; 86.4:13.6). And finally experiments with 16.9 kJ released energy were implemented. The results showed, that the best of way of initiation an arc discharge is graphitization using Ar with mass ratio Ti:B 26.7:73.3 and input energy − 33.9 kJ. The yield of TiB2 was 93.2% with the smallest particles 56.1 nm.
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