scholarly journals Thermal Plasma of Electric Arc Discharge Between Composite Cu-Cr Electrsodes: Optical Emission and Electrode Surface Interaction

2020 ◽  
Vol 7 (2) ◽  
pp. 43-51
Author(s):  
A. Murmantsev ◽  
A. Veklich ◽  
V. Boretskij ◽  
M. Bartlová ◽  
L. Dostál ◽  
...  
Keyword(s):  
Thermal Plasma ◽  
Arc Discharge ◽  
Emission Spectra ◽  
Optical Emission ◽  
Electric Arc ◽  
Electrical Contacts ◽  
Copper Electrodes ◽  
Air Atmosphere ◽  
Electric Arc Discharge ◽  
Surface Modified

This work deals with investigations of thermal plasma of electric arc discharge between sintered composite Cu-Cr electrodes, which can be used in electrical contacts of vacuum circuit breakers. Breaking arcs between composite Cu-Cr as well as single-component copper electrodes were used to study the electrical properties, plasma optical emission and electrodes surface modification behavior. In particular, the temporal evolution of plasma emission spectra of electric breaking arcs in air atmosphere was investigated by Optical Emission Spectroscopy (OES). Scanning Electron Microscopy (SEM) with Energy-dispersive X-ray Spectroscopy (EDXS) were applied to analyze the cross-section of working layer of electrodes surface modified by the heat flux from the discharge.

scholarly journals SPECTROSCOPY PECULIARITIES OF ELECTRIC ARC DISCHARGE PLASMA WITH IRON VAPOURS

2021 ◽  
pp. 171-175
Author(s):  
A. Murmantsev ◽  
A. Veklich ◽  
V. Boretskij
Keyword(s):  
Discharge Plasma ◽  
Arc Discharge ◽  
Line Emission ◽  
Plasma Temperature ◽  
Optical Emission ◽  
Plasma Source ◽  
Electric Arc ◽  
Spectral Lines ◽  
Electric Arc Discharge

This work is devoted to spectroscopy peculiarities of electric arc discharge plasma with iron vapours. The solution of the main issue of optical emission spectroscopy, namely, selection of iron spectral lines, to study the parameters of non-uniform and non-steady-state plasma source, was considered within this paper. Specifically, the Boltzmann plots technique was used for detailed analysing of application possibility of Fe I spectral lines as well as for determination of plasma temperature. The spatial profiles of selected spectral line emission intensities were used to measure the radial distributions of plasma temperature of free-burning arc discharge between consumable electrodes at 3.5 A.

Spectroscopy peculiarities of thermal plasma of electric arc discharge between electrodes with Zn admixtures

2014 ◽  
Vol 54 (7) ◽  
pp. 1235-1241 ◽  
Author(s):  
R.V. Semenyshyn ◽  
A.N. Veklich ◽  
I.L. Babich ◽  
V.F. Boretskij
Keyword(s):  
Thermal Plasma ◽  
Arc Discharge ◽  
Electric Arc ◽  
Electric Arc Discharge

scholarly journals Thermal Plasma of Electric Arc Discharge Between Cu-Cr Composite Electrodes

2019 ◽  
Vol 6 (1) ◽  
pp. 27-30
Author(s):  
A. Veklich ◽  
V. Boretskij ◽  
M. Kleshych ◽  
S. Fesenko ◽  
A. Murmantsev ◽  
...  
Keyword(s):  
Arc Discharge ◽  
Optical Emission ◽  
Plasma Source ◽  
Electric Arc ◽  
Arc Plasma ◽  
Composite Electrodes ◽  
Plasma Parameters ◽  
Gas Atmosphere ◽  
Electric Arc Discharge ◽  
Erosion Properties

This work deals with investigations of model plasma source realised as electric arc discharge in gas atmosphere between Cu-Cr composite electrodes. Radial distributions of temperature and electron density in arc plasma column were studied by optical emission spectroscopy. The content of electrode metals' vapours in discharge was calculated on the base of experimentally obtained plasma parameters as initial data. So, in this way the erosion properties of such composition can be determined.

Boosting persistence time of laser-induced plasma by electric arc discharge for optical emission spectroscopy

2015 ◽  
Vol 109 ◽  
pp. 31-38 ◽  
Author(s):  
S. Eschlböck-Fuchs ◽  
P.J. Kolmhofer ◽  
M.A. Bodea ◽  
J.G. Hechenberger ◽  
N. Huber ◽  
...  
Keyword(s):  
Emission Spectroscopy ◽  
Optical Emission Spectroscopy ◽  
Arc Discharge ◽  
Optical Emission ◽  
Electric Arc ◽  
Laser Induced Plasma ◽  
Persistence Time ◽  
Electric Arc Discharge

scholarly journals PLASMA-SURFACE INTERACTION OF ELECTRIC ARC DISCHARGE BETWEEN COMPOSITE Cu-Cr ELECTRODES

2020 ◽  
pp. 174-178
Author(s):  
A. Murmantsev ◽  
A. Veklich ◽  
V. Boretskij ◽  
M. Bartlová ◽  
L. Dostál ◽  
...  
Keyword(s):  
Arc Discharge ◽  
Optical Emission ◽  
Electric Arc ◽  
Surface Interaction ◽  
Composite Electrodes ◽  
Plasma Parameters ◽  
Plasma Surface ◽  
Air Atmosphere ◽  
Different Temperatures ◽  
Arc Discharges

In this work the plasma of electric arc discharges between Cu-Cr composite electrodes, which material were pressured and sintered at different temperatures 750 or 1050°С, are investigated by Optical Emission Spectroscopy (OES). The Scanning Electron Microscopy (SEM) with Energy-Dispersive X-ray Spectroscopy (EDXS) are used to study the working surface of electrodes, modified by thermal effect of breaking electrical arc in the air atmosphere. The erosion intensity of electrodes’ material due to plasma-surface interaction is estimated in indirect way by determination of metal vapours content in the discharge gap in an assumption of local thermodynamic equilibrium (LTE). The plasma composition is calculated in this case on the base of experimentally determined plasma parameters: temperature and electron density.

Fabrication of the Nb–16Si Alloy Powder for Additive Technologies by Mechanical Alloying and Spheroidization in Electric-Arc Discharge Thermal Plasma

2018 ◽  
Vol 59 (6) ◽  
pp. 671-676 ◽  
Author(s):  
A. A. Popovich ◽  
N. G. Razumov ◽  
A. V. Grigoriev ◽  
A. V. Samokhin ◽  
V. Sh. Sufiiarov ◽  
...  
Keyword(s):  
Mechanical Alloying ◽  
Thermal Plasma ◽  
Alloy Powder ◽  
Arc Discharge ◽  
Electric Arc ◽  
Additive Technologies ◽  
Electric Arc Discharge

Shapes of Spectral Lines of Nonuniform Plasma of Electric Arc Discharge Between Copper Electrodes

2007 ◽  
Author(s):  
Ida L. Babich ◽  
Viacheslav F. Boretskij ◽  
Anatoly N. Veklich ◽  
Luka Č. Popović ◽  
Milan S. Dimitrijević
Keyword(s):  
Arc Discharge ◽  
Electric Arc ◽  
Spectral Lines ◽  
Nonuniform Plasma ◽  
Copper Electrodes ◽  
Electric Arc Discharge

Microfabricated Fiber Probe by Combination of Electric Arc Discharge and Chemical Etching Techniques

2012 ◽  
Vol 462 ◽  
pp. 38-41 ◽  
Author(s):  
Wan Maisarah Mukhtar ◽  
P. Susthitha Menon ◽  
Sahbudin Shaari
Keyword(s):  
Optical Fibers ◽  
Chemical Etching ◽  
Arc Discharge ◽  
Etching Rate ◽  
Electric Arc ◽  
Buffer Solution ◽  
Fiber Probe ◽  
Optical Fiber Probes ◽  
Electric Arc Discharge ◽  
Fiber Probes

In this study, optical fiber probes were fabricated by combination of electric arc discharge and chemical etching techniques. Size of tips diameters fabricated using different etching solutions were observed. When the optical fibers were pulled and heated by the electric arc discharge using a fusion splicer, fiber tips with few microns in diameter were obtained. To minimize the tips diameter, the pulled fiber probes were etched vertically for 10 minutes using two different etching solutions namely 49% HF and HF buffer solution (49% HF and 40% NH4F) with ratio of 2:1. A thick overlayer was added on top of the HF solution to prevent dangerous vapors escape to the environment. When the tapered part of the pulled fiber (FP1) was dipped into 49% HF solution, the diameter of tip was slightly decreased from 4.41μm to 1.31μm with etching rate of 5.17x10-3 μms-1. When the pulled fiber (FP2) was etched into HF buffer solution, the etching rate was increased up to 52.35% with the etching rate of 10.85x10-3μms-1. The tip diameter was reduced from 7.01μm to 468.9 nm in diameter. Combination of “heat and pull” technique with chemical etching by using HF buffer solution produced fiber probe with small tip diameter.

A study of helium gas clean-up in an electric arc discharge

1952 ◽  
Vol 71 (2) ◽  
pp. 159-164 ◽  
Author(s):  
M. J. Reddan ◽  
G. F. Rouse
Keyword(s):  
Arc Discharge ◽  
Electric Arc ◽  
Helium Gas ◽  
Electric Arc Discharge
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