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The effect of metal particles on surface flashover characteristics of alumina ceramic under pulse voltage in vacuum.

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Title: The effect of metal particles on surface flashover characteristics of alumina ceramic under pulse voltage in vacuum.
Authors: Gan, Pingping1 (AUTHOR) ganpingping@caep.cn, Xu, Ao1 (AUTHOR), Shi, Yuanjie1 (AUTHOR)
Source: Electrical Engineering. Jun2024, Vol. 106 Issue 3, p2857-2863. 7p.
Subjects: Metallic surfaces, Flashover, Electrostatic fields, Voltage, Ceramics, Vacuum chambers, Aluminum oxide
Abstract: Metal particles play a significant role in inducing surface flashover of insulators. Alumina ceramic is commonly utilized as an insulator in electrical vacuum equipment due to its high insulation and corrosion resistance properties. To ensure the safe operation of such equipment, it is imperative to investigate the impact of metal particles on the flashover characteristics of alumina ceramics. In this study, we conducted measurements on the surface flashover voltage of alumina ceramic under pulse voltage in a vacuum chamber with metal particles attached to various positions on the ceramic surface. Our experimental findings demonstrate that the presence of metal particles reduces the flashover voltage, and longer particle lengths result in lower flashover voltages. Furthermore, our results indicate that metal particles located near the cathode have a greater impact on flashover voltage than those located elsewhere. The phenomenon was analyzed through numerical simulation of the electrostatic field, elucidating the mechanism by which particles affect the surface flashover voltage of alumina ceramic. This provides a practical and simulation foundation for comprehending the factors that influence surface flashover. [ABSTRACT FROM AUTHOR]
Copyright of Electrical Engineering is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: <searchLink fieldCode="AR" term="%22Gan%2C+Pingping%22">Gan, Pingping</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> ganpingping@caep.cn</i><br /><searchLink fieldCode="AR" term="%22Xu%2C+Ao%22">Xu, Ao</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Shi%2C+Yuanjie%22">Shi, Yuanjie</searchLink><relatesTo>1</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Electrical+Engineering%22">Electrical Engineering</searchLink>. Jun2024, Vol. 106 Issue 3, p2857-2863. 7p.
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  Data: <searchLink fieldCode="DE" term="%22Metallic+surfaces%22">Metallic surfaces</searchLink><br /><searchLink fieldCode="DE" term="%22Flashover%22">Flashover</searchLink><br /><searchLink fieldCode="DE" term="%22Electrostatic+fields%22">Electrostatic fields</searchLink><br /><searchLink fieldCode="DE" term="%22Voltage%22">Voltage</searchLink><br /><searchLink fieldCode="DE" term="%22Ceramics%22">Ceramics</searchLink><br /><searchLink fieldCode="DE" term="%22Vacuum+chambers%22">Vacuum chambers</searchLink><br /><searchLink fieldCode="DE" term="%22Aluminum+oxide%22">Aluminum oxide</searchLink>
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  Data: Metal particles play a significant role in inducing surface flashover of insulators. Alumina ceramic is commonly utilized as an insulator in electrical vacuum equipment due to its high insulation and corrosion resistance properties. To ensure the safe operation of such equipment, it is imperative to investigate the impact of metal particles on the flashover characteristics of alumina ceramics. In this study, we conducted measurements on the surface flashover voltage of alumina ceramic under pulse voltage in a vacuum chamber with metal particles attached to various positions on the ceramic surface. Our experimental findings demonstrate that the presence of metal particles reduces the flashover voltage, and longer particle lengths result in lower flashover voltages. Furthermore, our results indicate that metal particles located near the cathode have a greater impact on flashover voltage than those located elsewhere. The phenomenon was analyzed through numerical simulation of the electrostatic field, elucidating the mechanism by which particles affect the surface flashover voltage of alumina ceramic. This provides a practical and simulation foundation for comprehending the factors that influence surface flashover. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
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  Data: <i>Copyright of Electrical Engineering is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1007/s00202-023-02126-5
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      – Code: eng
        Text: English
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        StartPage: 2857
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        Type: general
      – SubjectFull: Flashover
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      – SubjectFull: Electrostatic fields
        Type: general
      – SubjectFull: Voltage
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      – SubjectFull: Ceramics
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      – SubjectFull: Vacuum chambers
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      – SubjectFull: Aluminum oxide
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            – D: 01
              M: 06
              Text: Jun2024
              Type: published
              Y: 2024
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