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Erosion Behavior of a Cu-Ti3AlC2 Cathode by Multi-Electric Arc

by 1,2,3,*, 4,*, 1,2,3 and 1,2,3
1
School of Material and Chemical Engineering, Bengbu University, Bengbu 233030, China
2
Engineering Technology Research Center of Silicon-based Materials, Bengbu University, Bengbu 233030, China
3
Research and Applications of Silicon-based Materials of Bengbu University Academician Workstation, Bengbu 233030, China
4
School of Materials Science and Engineering, Hefei University of Technology, Hefei 230009, China
*
Authors to whom correspondence should be addressed.
Materials 2019, 12(18), 2947; https://doi.org/10.3390/ma12182947
Received: 17 August 2019 / Revised: 9 September 2019 / Accepted: 10 September 2019 / Published: 11 September 2019
A Cu-Ti3AlC2 cathode was eroded by arc discharging at 10 kV. The cross-sectional and horizontal morphologies of the eroded surface were recorded by a field emission scanning electron microscope (FE-SEM). The energy dispersive X-ray spectroscopy (EDS) and Raman spectrometry were carried out to analyze the compositions. The color-eroded surface was obtained by a three-dimensional laser scanning confocal microscope (3D LSCM). After 100 times of arc erosion, the Cu-Ti3AlC2 melted and resolidified. An eroded layer about 10 μm thick was formed, covered with pits, protrusions, and pores. The breakdown current was kept between 37 to 43 A. Under the action of a high temperature arc, Cu-Ti3AlC2 was oxidized to CuO and TiO2, accompanying the evaporation of the Al element. View Full-Text
Keywords: Cu-Ti3AlC2; cross-sectional morphology; arc erosion mechanism Cu-Ti3AlC2; cross-sectional morphology; arc erosion mechanism
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MDPI and ACS Style

Huang, X.; Feng, Y.; Li, L.; Li, Z. Erosion Behavior of a Cu-Ti3AlC2 Cathode by Multi-Electric Arc. Materials 2019, 12, 2947.

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