Investigation of the characteristics of an electric arc plasma torch with an output step electrode

Simultaneous optical, spectroscopic, and electrical measurements in the region of the arc anode attachment of the water-argon plasma torch are presented. A movement of the arc attachment along the anode surface together with its restrike mode is monitored. Temporal evolution of temperature during one cycle of the restrike mode is obtained in three different axial positions in the plasma column. Resulting temperature profiles show how the position of the arc attachment influences the plasma properties.

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Zircon dissociation in air plasma through a low power transferred arc plasma torch

Ceramics International ◽

10.1016/j.ceramint.2014.08.068 ◽

2015 ◽

Vol 41 (1) ◽

pp. 265-273 ◽

Cited By ~ 8

Author(s):

S. Yugeswaran ◽

P.V. Ananthapadmanabhan ◽

L. Lusvarghi

Keyword(s):

Low Power ◽

Plasma Torch ◽

Arc Plasma ◽

Air Plasma ◽

Transferred Arc ◽

Arc Plasma Torch

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Influence of the Shroud Gas Injection Configuration on the Characteristics of a DC Non-transferred Arc Plasma Torch

Plasma Chemistry and Plasma Processing ◽

10.1007/s11090-018-9890-6 ◽

2018 ◽

Vol 38 (4) ◽

pp. 759-770 ◽

Cited By ~ 2

Author(s):

Vadikkeettil Yugesh ◽

Ganesh Ravi ◽

Kandasamy Ramachandran ◽

Goyal Vidhi ◽

Kailsha Chandra Meher

Keyword(s):

Plasma Torch ◽

Gas Injection ◽

Arc Plasma ◽

Transferred Arc ◽

Arc Plasma Torch

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DC Arc Plasma Torch with Nanocarbon-Coated Electrodes

Encyclopedia of Plasma Technology ◽

10.1081/e-eplt-120053799 ◽

2016 ◽

pp. 307-316

Keyword(s):

Plasma Torch ◽

Arc Plasma ◽

Arc Plasma Torch ◽

Dc Arc ◽

Dc Arc Plasma Torch ◽

Coated Electrodes

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On the Issue of the Thermal Emission Cathode Resource on the Oxide Films of Hafnium and Zirconium

Plasma Physics and Technology Journal ◽

10.14311/ppt.2019.3.247 ◽

2019 ◽

Vol 6 (3) ◽

pp. 247-250

Author(s):

M. Klochok ◽

Y. Popil ◽

V. Chernyak ◽

V. Iukhymenko ◽

I. Fedirchyk ◽

...

Keyword(s):

Zirconium Oxide ◽

Plasma Torch ◽

Erosion Rate ◽

Thermal Emission ◽

Oxide Films ◽

Arc Plasma ◽

Depth Of Penetration ◽

Operating Life ◽

Arc Plasma Torch ◽

Emission Cathode

The article shows the results of research on the destruction of the thermionic cathode of an arc plasma torch when inserting hafnium and zirconium along the trace of the spot of a gas-discharge arc by means of electronic metallography with spectral analysis in the control region. The depth of penetration of the spot into the metal of the cathode insert was determined due to the discrete mechanism of action on the metal at the time of attachment. The erosion rate of zirconium oxide films was experimentally established, the extension of the operating life substantiated while mechanisms for its increase were revealed, and two types of arc contact with a hafnium or zirconium insert - the "contracted" and "diffused" ones - were offered. The theoretical operating life of the cathode is calculated.

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