High Power Laser and Particle Beams, Volume. 37, Issue 4, 055003(2025)

Effect of Cr2O3 coating sintered at high temperature on the vacuum surface hold-off voltage performance of Al2O3 ceramic

Jie Yang1、*, Xin Chen1, Chen Li1、*, Xiaoning Zhang2, Jialong He1, Ping Liu1, Zhen Qin1, Wei Zhao1, Gang Huang1, Jun Xiang1, Tiantao Li1, Jie Li1, Pan Dong1, and Tao Wang1
Author Affiliations
  • 1Institute of Fluid Physics, CAEP, Mianyang 621900, China
  • 2Department of Radiotherapy, Sichuan Clinical Research Center for Cancer, Sichuan Cancer Hospital & Institute, SichuanCancer Center, University of Electronic Science and Technology of China, Chengdu 610041, China
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    Figures & Tables(8)
    Schematic diagram of testing method for vacuum surface hold-off voltage of ceramic samples
    Image of ceramic samples
    X-ray diffraction pattern of ceramic samples
    SEM micrographs of ceramic samples
    Variation diagram of secondary electron emission yield for ceramic samples
    Contrast diagram of surface resistivity for ceramic samples
    Contrast diagram of hold-off electric field strength for ceramic samples under pulsed voltage
    • Table 1. Surface ingredient of ceramic samples

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      View in Article

      Table 1. Surface ingredient of ceramic samples

      samplemass fraction/%
      ONaMgAlSiKCaCr
      Al2O3 ceramic40.80.50.5456.060.670.530.89/
      Cr2O3 coated Al2O3 ceramic33.54/0.1918.730.52/0.0346.99
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    Jie Yang, Xin Chen, Chen Li, Xiaoning Zhang, Jialong He, Ping Liu, Zhen Qin, Wei Zhao, Gang Huang, Jun Xiang, Tiantao Li, Jie Li, Pan Dong, Tao Wang. Effect of Cr2O3 coating sintered at high temperature on the vacuum surface hold-off voltage performance of Al2O3 ceramic[J]. High Power Laser and Particle Beams, 2025, 37(4): 055003

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    Paper Information

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    Received: Aug. 26, 2024

    Accepted: Mar. 7, 2025

    Published Online: May. 15, 2025

    The Author Email: Jie Yang (yangjie_sc@126.com), Chen Li (lic05@tsinghua.org.cn)

    DOI:10.11884/HPLPB202537.240275

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