TY - GEN
T1 - Characterizing Surface Profiles of Tungsten-based Electrodes under Intense Pulsed Arcs
AU - Han, Ruoyu
AU - Xu, Guizi
AU - Yuan, Qian
AU - Geng, Jinyue
AU - Wu, Jiawei
AU - Tang, Qiong
N1 - Publisher Copyright:
© 2021 IEEE.
PY - 2021/5/28
Y1 - 2021/5/28
N2 - This paper presented the detailed results of surface profiles of tungsten-based electrodes (W-Ni-Fe and W-Cu) under 100-kA level repetitive pulsed arcs for 10, 000 times. Focusing on the surface morphology, a series of statistical parameters (surface roughness, etc.) were adopted to quantitatively characterize the features of electrode surface. Meanwhile, the evolution of those parameters in the aging process was summarized and analyzed systematically. The results indicated that the contour of the electrode changed in both general shape and micro-structure. For the macroscopic contour, the characteristic diameter of the electrode tip decayed from ~21 mm to less than 18 mm after the test. As for the micro-fluctuations (μm level), various erosion patterns were found in anode and cathode, or in W-Ni-Fe and W-Cu electrodes. Then, possible mechanisms of those phenomena were discussed. Finally, the Fast Fourier Transform (FFT) method was adopted to study the spatial pseudo-periodicity of the electrode profiles. The four materials had a rank on erosion resistance, namely, 97WNiFe>93WNiFe90WNiFe>90WCu.
AB - This paper presented the detailed results of surface profiles of tungsten-based electrodes (W-Ni-Fe and W-Cu) under 100-kA level repetitive pulsed arcs for 10, 000 times. Focusing on the surface morphology, a series of statistical parameters (surface roughness, etc.) were adopted to quantitatively characterize the features of electrode surface. Meanwhile, the evolution of those parameters in the aging process was summarized and analyzed systematically. The results indicated that the contour of the electrode changed in both general shape and micro-structure. For the macroscopic contour, the characteristic diameter of the electrode tip decayed from ~21 mm to less than 18 mm after the test. As for the micro-fluctuations (μm level), various erosion patterns were found in anode and cathode, or in W-Ni-Fe and W-Cu electrodes. Then, possible mechanisms of those phenomena were discussed. Finally, the Fast Fourier Transform (FFT) method was adopted to study the spatial pseudo-periodicity of the electrode profiles. The four materials had a rank on erosion resistance, namely, 97WNiFe>93WNiFe90WNiFe>90WCu.
KW - electrode erosion
KW - pulsed arc
KW - surface morphology
KW - tungsten-based materials
UR - http://www.scopus.com/inward/record.url?scp=85114197000&partnerID=8YFLogxK
U2 - 10.1109/CIEEC50170.2021.9510868
DO - 10.1109/CIEEC50170.2021.9510868
M3 - Conference contribution
AN - SCOPUS:85114197000
T3 - Proceedings of 2021 IEEE 4th International Electrical and Energy Conference, CIEEC 2021
BT - Proceedings of 2021 IEEE 4th International Electrical and Energy Conference, CIEEC 2021
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 4th IEEE China International Electrical and Energy Conference, CIEEC 2021
Y2 - 28 May 2021 through 30 May 2021
ER -