Effect of the Magnetic Field on the Magnetically Stabilized Gliding Arc Discharge and Its Application in the Preparation of Carbon Black Nanoparticles

In this study, a cylindrical plasma generator with an axial magnetic field is constructed to obtain the magnetically stabilized gliding arc discharge (MSGAD). Using high speed photography, voltage waveform analysis and spectral diagnostics, the MSGAD physical characteristics, such as arc voltage, ro...

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Bibliographic Details
Published in:Plasma chemistry and plasma processing 2018-11, Vol.38 (6), p.1223-1238
Main Authors: Wang, Cheng, Lu, Zhongshan, Li, Dongning, Xia, Weiluo, Xia, Weidong
Format: Article
Language:English
Subjects:
Carbon
Carbon black
Characterization and Evaluation of Materials
Chemistry
Chemistry and Materials Science
Classical Mechanics
Cylindrical plasmas
Electric arcs
Electric fields
Electric potential
Electron energy
Gliding
High speed photography
Inorganic Chemistry
Magnetic fields
Magnetism
Mechanical Engineering
Nanoparticles
Original Paper
Photography
Physical properties
Plasma generators
Rotating plasmas
Rotation
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Description
Summary:In this study, a cylindrical plasma generator with an axial magnetic field is constructed to obtain the magnetically stabilized gliding arc discharge (MSGAD). Using high speed photography, voltage waveform analysis and spectral diagnostics, the MSGAD physical characteristics, such as arc voltage, rotation speed, electric field, excitation/rotational temperature, etc., are investigated under different magnetic field. The experimental results reveal that as the magnetic field increases, the arc voltage, rotation speed, electric field and non-equilibrium level increase, and the MSGAD is more stable under the larger magnetic field. Additionally, carbon black nanoparticles with “crumpled paper sheet” structure are prepared by the MSGAD. The results indicate that the enhanced magnetic field can promote the transition from amorphous carbon to crystalline graphite. It is inferred that the transition is likely relevant to the rotation speed and electron energy of the arc plasma.
ISSN:0272-4324
1572-8986
DOI:10.1007/s11090-018-9915-1