Title :
Low-Power Microwave-Discharge Forms in Hydrocarbon Atmosphere
Author :
Skovoroda, Alexander A. ; Spitsyn, Alexander V. ; Yanchenkov, Sergey V.
Author_Institution :
Kurchatov Inst., Moscow
Abstract :
Different forms of the steady-state microwave discharges in argon-methane mixture at atmospheric pressure find great interest in exploring both nature phenomena and finding wide-technology applications, like coating, welding, plasma-induced chemical catalysis, or as a plasmatron for the ignitions of flames in different applications. Atmospheric microwave discharges are attractive in that they demand no pumping systems and are easy to access, explore, and manipulate. A 7-GHz generator (15-150 W) coupled with microwave coaxial plasma burner was used for plasma production in argon/methane flow (1-10 L/min). The possibility of synthesizing carbon materials by carbon vapor deposition in conditions of such discharge was demonstrated. Growing of the 5-cm-long carbon filament was observed with the speed of up to 1 cm/min. Pictures of plasma forms and synthesized samples are presented.
Keywords :
carbon; fibres; high-frequency discharges; plasma deposition; plasma production; C; argon-methane mixture; atmospheric microwave discharges; carbon filament; carbon vapor deposition; frequency 7 GHz; hydrocarbon atmosphere; microwave coaxial plasma burner; plasma production; power 15 W to 150 W; size 5 cm; steady-state microwave discharges; velocity 0.0167 cm/s; Atmospheric pressure microwave discharge; carbon condensation; carbon synthesis; methane plasma; microwave discharge;
Journal_Title :
Plasma Science, IEEE Transactions on
DOI :
10.1109/TPS.2008.924252