Spectroscopy of plasma of electric arc discharge between Cu-Mo composite electrodes
DOI:
https://doi.org/10.14311/ppt.2025.1.73Keywords:
Thermal plasma, optical emission spectroscopy, composite electrodes, copper, molybdenumAbstract
This work is devoted to the study of thermal plasma of electric arc discharges between composite Cu-Mo electrodes by optical diagnostic techniques. The electrodes were fabricated from copper–molybdenum composite materials. The arc discharge was ignited in an argon flow at a direct current of 3.5 A and a discharge gap of 8 mm. The absolute intensities of the spectral lines emitted by the plasma were registered in the spectral range of 430–650 nm. Radial distributions of key plasma parameters, namely excitation temperature and number densities of metals, were determined. For this purpose, the Boltzmann plot technique was applied using selected spectral lines of Cu I and Mo I. Particular attention was paid to the applicability of the local thermodynamic equilibrium assumption in the arc plasma under such discharge conditions.
References
P. G. Slade. Electrical Contacts: Principles and Applications. CRC Press, 2nd edition, 2014.
S. Fukagai, H. P. Brunskill, A. K. Hunter, et al. Transitions in rolling-sliding wheel/rail contact condition during running-in. Tribology International, 149:105679, 2020. doi:10.1016/j.triboint.2019.03.037.
T. Kziazyk, E. Gavignet, P.-H. Cornuault, et al. Review on test benches studying sliding electrical contact and synthesis of experimental results. Energies, 16(3):1294, 2023. doi:10.3390/en16031294.
M. Ahmadein, O. A. El-Kady, M. M. Mohammed, et al. Improving the mechanical properties and coefficient of thermal expansion of molybdenum-reinforced copper using powder metallurgy. Materials Research Express, 8:096502, 2021. doi:10.1088/2053-1591/ac209a.
M. Chen, N. Luo, Z. Wang, et al. Surface modification of highly reflective Cu powder using Mo particles as modifiers for improving energy efficiency in laser additive manufacturing of Cu-Mo immiscible alloys. Journal of Manufacturing Processes, 136:251–266, 2025. doi:10.1016/j.jmapro.2025.01.069.
N. Grechanyuk, V. Konoval, V. Grechanyuk, and et al. Properties of Cu-Mo materials produced by physical vapor deposition for electrical contacts. Powder Metallurgy and Metal Ceramics, 60:183–190, 2021. doi:10.1007/s11106-021-00226-0.
N. Luo, M. Chen, Z. Ding, et al. Densification and property improvement of Mo-Cu immiscible alloys processed by repressing and re-sintering. International Journal of Refractory Metals and Hard Materials, 130:107131, 2025. doi:10.1016/j.ijrmhm.2025.107131.
A. Veklich, A. Lebid, R. Minakova, et al. Peculiarities of interaction of electric arc plasma and composite electrodes’ working surface. In Proceedings of the 21st Symposium on Physics of Switching Arc (FSO 2015), 2015. Conference Paper.
K. Bockasten. Transformation of observed radiances into radial distribution of the emission of a plasma. Journal of the Optical Society of America, 51(9):943–947, 1961.
A. Veklich, A. Lebid, and T. Tmenova. Spectroscopic data W I, Mo I and Cr I spectral lines: Selection. Journal of Astrophysics and Astronomy, 36:16 pp., 2015. doi:10.1007/s12036-015-9342-0.
A. Kramida, Yu. Ralchenko, J. Reader, and and NIST ASD Team. NIST Atomic Spectra Database (ver. 5.10), [Online]. Available: https://physics.nist.gov/asd [2023, August 2]. National Institute of Standards and Technology, Gaithersburg, MD., 2022.
I. Babich, V. Boretskij, A. Veklich, and R. Semenyshyn. Spectroscopic data and stark broadening of Cu I and Ag I spectral lines: Selection and analysis. Advances in Space Research, 54:1254–1263, 2014. doi: http://dx.doi.org/10.1016/j.asr.2013.10.034.
A. Murmantsev. Investigation of spatial distribution of metal vapours admixtures in the plasma of an electric arc discharge. Problems of Atomic Science and Technology, 146(4):139–146, 2023. doi:10.46813/2023-146-139.
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Copyright (c) 2025 A. Veklich, A. Murmantsev, V. Apanasenko, O. Tolochyn
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