Production of HfTaTiNbZrC5 High-Entropy Carbide Micropowder in the Plasma of an Atmospheric Pressure Arc Discharge

AbstractRecently, many different plasma sources are being investigated for exhaust gases treatment, odor abatement, VOC removal, soil conditioning, surface decontamination or tissue disinfection and sterilization. Among many different plasma reactors investigated in laboratories, gliding arc discharges (GAD), dielectric barrier discharges (DBD), pulsed discharges (PD), atmospheric pressure glow discharges (APGD) and atmospheric pressure plasma jets (APPJ) seem to be the most promising for high pressure low temperature applications. They can be designed as multi-electrodes’ high power system that can be used in environment protection processes, like decontamination of large surfaces and treatment of large volume of polluted gases, as well as small size and low power devices for biomedical applications, like plasma healing, disinfection and sterilization. Paper presents review of power supply systems for cold plasma reactors. Dielectric Barrier Discharge (DBD), Gliding Arc Discharge (GAD) and atmospheric pressure plasma jet (APPJ) reactors with their supply systems have been discussed from the point view of their characteristics, possibility to control power to the discharge and efficiency. Taking into account the plasma reactor characteristics and nature (nonlinear resistive and/or capacitive) different solutions of power suppliers have been presented: transformer type, AC/DC/AC inverter, RF-frequency system and frequency resonant inverter.

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Spatiotemporally resolved characteristics of a gliding arc discharge in a turbulent air flow at atmospheric pressure

Physics of Plasmas ◽

10.1063/1.4974266 ◽

2017 ◽

Vol 24 (1) ◽

pp. 013514 ◽

Cited By ~ 20

Author(s):

Jiajian Zhu ◽

Jinlong Gao ◽

Andreas Ehn ◽

Marcus Aldén ◽

Anders Larsson ◽

...

Keyword(s):

Atmospheric Pressure ◽

Arc Discharge ◽

Air Flow ◽

Gliding Arc Discharge ◽

Gliding Arc ◽

Turbulent Air Flow

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Re-igniting the afterglow plasma column of an AC powered gliding arc discharge in atmospheric-pressure air

Applied Physics Letters ◽

10.1063/1.5041262 ◽

2018 ◽

Vol 112 (26) ◽

pp. 264101 ◽

Cited By ~ 2

Author(s):

Chengdong Kong ◽

Jinlong Gao ◽

Jiajian Zhu ◽

Andreas Ehn ◽

Marcus Aldén ◽

...

Keyword(s):

Plasma Column ◽

Atmospheric Pressure ◽

Arc Discharge ◽

Gliding Arc Discharge ◽

Gliding Arc ◽

Afterglow Plasma

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Study of the Conversion of Carbon-containing and Organochlorine Impurities in the Process of Hydrogen Reduction of Silicon Tetrachloride by RF (40.68 MHz) Arc Discharge.

Plasma Physics and Technology Journal ◽

10.14311/ppt.2019.2.111 ◽

2019 ◽

Vol 6 (2) ◽

pp. 111-114

Author(s):

R. Kornev ◽

P. Sennikov ◽

V. Nazarov ◽

A. Kut'in ◽

A. Plekhovich

Keyword(s):

Field Strength ◽

Electric Field ◽

Electric Field Strength ◽

Thermodynamic Analysis ◽

Atmospheric Pressure ◽

Hydrogen Reduction ◽

Solid Phase ◽

Arc Discharge ◽

Silicon Tetrachloride ◽

High Electric Field Strength

A contracted RF (40.68 MHz) arc discharge of atmospheric pressure, stabilized between two rod electrodes, was used to obtain trichlorosilane by the reaction of hydrogen reduction of silicon tetrachloride (SiCl4). In model mixtures of macro-composition in the ratio H2/SiCl4/CCl4=10/1/1, it was shown that C and SiC are the main solid-phase product which are deposited on the surface of electrodes in the form of dendrides. The temperature of the ends of the electrodes determined using emission thermometry is 1600 K. The thermodynamic analysis of H2+SiCl4+CCl4 system confirms that the formation of C and SiC occurs in the temperature range of 1600 K. The deposition of solid-phase products occurs on the electrodes in the zone of high electric field strength.

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Dynamic behaviour of alternating current arc discharge in a multi-arc generator at atmospheric pressure

Contributions to Plasma Physics ◽

10.1002/ctpp.201800133 ◽

2019 ◽

Vol 59 (9) ◽

pp. e201800133

Author(s):

Q.F. Lin ◽

Y.J. Zhao ◽

G.H. Ni ◽

Q.J. Guo ◽

L. Li ◽

...

Keyword(s):

Atmospheric Pressure ◽

Dynamic Behaviour ◽

Arc Discharge ◽

Alternating Current

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Gliding arc triggered microwave plasma arc at atmospheric pressure for coal gasification application

International Journal of Modern Physics Conference Series ◽

10.1142/s2010194514603457 ◽

2014 ◽

Vol 32 ◽

pp. 1460345

Author(s):

Vishal Jain ◽

A. Visani ◽

C. Patil ◽

B. K. Patel ◽

P. K. Sharma ◽

...

Keyword(s):

High Temperature ◽

Microwave Power ◽

Atmospheric Pressure ◽

Plasma Torch ◽

Microwave Plasma ◽

Arc Discharge ◽

Effluent Treatment ◽

Plasma Arc ◽

Gliding Arc ◽

Consumable Electrodes

Plasma torch is device that efficiently converts electrical energy in to thermal energy for various high temperature applications. The conventional plasma torch comprises of consumable electrodes namely anode and cathode electrodes. The replacement of these electrodes is a complex process owing to its cooling and process shut down requirements. However, microwave plasma arc is electrode-less plasma arc system that is an alternative method to conventional arc technology for generating plasma arc. In this technique, microwave power is efficiently coupled to generate plasma arc by using the property of polar molecule to absorb microwave power. The absorption of microwave power is in form of losses due to intermolecular friction and high collisions between the molecules. This is an efficient method because all microwave power can be absorbed by plasma arc. The main feature of microwave plasma arc is its large uniform high temperature column which is not possible with conventional arc discharge methods. Such type of plasma discharge is very useful in applications where sufficient residence time for treat materials is required. Microwave arc does not require any consumable electrodes and hence, it can be operated continuously that makes it very useful for hazardous effluent treatment applications. Further, microwave cannot ionize neutral particles at atmospheric pressure and hence, a gliding arc is initiated between two thin electrodes in the cavity by applying very low power high voltage (3kV) AC source. In this report, the method for generating microwave arc of 1kW power using commercial microwave oven is elaborated.

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Electrical and spectral property of cold arc plasma at atmospheric pressure

Journal of Plasma Physics ◽

10.1017/s0022377812000463 ◽

2012 ◽

Vol 78 (6) ◽

pp. 617-620

Author(s):

YUAN ZHONG-CAI ◽

SHI JIA-MING ◽

CHEN ZONG-SHENG ◽

XU BO

Keyword(s):

Atmospheric Pressure ◽

Arc Discharge ◽

Rotational Temperature ◽

Molecular Nitrogen ◽

Atmospheric Pressure Plasma ◽

Emission Spectra ◽

Optical Emission ◽

Plasma Jet ◽

Ambient Air ◽

Arc Plasma

AbstractAn atmospheric pressure plasma jet is generated with a cold arc discharge in ambient air. The current-voltage characteristics and optical emission spectra of plasma discharges are investigated. The molecular nitrogen (N2), hydroxyl radical (OH), and oxygen atom (O) are observed and analyzed. Based on the best fit of the simulated spectra of N2 (C3∏u+ − B3∏g+) band and OH (A2∑+ − X2∏) band transition and the experimentally recorded spectra, the rotational temperature and the vibrational temperature of atmospheric pressure cold arc plasma jet (APCAPJ) are estimated.

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