1. Resistance to intense electron beam bombardment of TiC/Graphite: Numerical modeling and experimental investigation
- Author
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Changfeng Ke, Huo Yankun, Jun Cheng, Jianzhong Ni, Tang Yunsheng, Ping Wu, Changhua Chen, and Wenyuan Liu
- Subjects
010302 applied physics ,Materials science ,Process Chemistry and Technology ,Numerical modeling ,02 engineering and technology ,engineering.material ,021001 nanoscience & nanotechnology ,01 natural sciences ,Acceleration voltage ,Surfaces, Coatings and Films ,Electronic, Optical and Magnetic Materials ,Coating ,0103 physical sciences ,Materials Chemistry ,Ceramics and Composites ,Graphite substrate ,Cathode ray ,engineering ,Graphite ,Surface layer ,Composite material ,0210 nano-technology ,Deposition (law) - Abstract
Resistance to intense electron beam bombardment of TiC/Graphite was investigated numerically and experimentally. The results indicate that the decreasing of initial electron energy and the increasing of TiC coating thickness could both enhance the electron energy deposition inside the surface layer of the TiC/Graphite, and finally cause the increasement of the temperature differences at the interface between TiC coating and graphite substrate. The graphite substrate is well coated with TiC in all the TiC/graphite targets, and the morphology of the TiC coatings could be controlled by adjusting its thickness. Under electron beam with accelerating voltage of 850 keV, current of 11 kA, pulsewidth of 40 ns and pulse number of 30 times, TiC/Graphite target with TiC coating thickness of 1 μm shows more excellent electron beam bombardment resistance, agreeing with the results of the numerical modeling.
- Published
- 2021
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