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Breakdown phenomena across micron gap under extremely low-pressure

Research Project

Project/Area Number 20K14712
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 21010:Power engineering-related
Research InstitutionShonan Institute of Technology

Principal Investigator

Iwabuchi Hiroyuki  湘南工科大学, 工学部, 准教授 (50757341)

Project Period (FY) 2020-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2022: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2021: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2020: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Keywordsパッシェンの法則 / 沿面放電 / 絶縁破壊 / 電子デバイス / 電界電子放出 / 部分放電 / 放電現象
Outline of Research at the Start

本研究は、放電研究の分野で未開拓のまま残されてきた低気圧・微小ギャップにおける放電現象にスポットを当てるものである。低気圧環境下における電界電子放出微小電流・絶縁破壊特性測定、および微小空隙における放電特性の把握を通じて、低気圧環境化における微小ギャップ放電機構を明らかにする。

Outline of Final Research Achievements

In this study, the mechanism of breakdown phenomena in low-pressure and micrometer-scale gaps was investigated both experimentally and by simulation.
As a result, it was found that the breakdown phenomenon at low pressure and micro-gap is similar to that of vacuum discharge, and that the breakdown voltage is triggered by field emission from the cathode surface. Since the field electron emission phenomenon strongly depends on the surface electric field of the electrode, it is important in insulation design to keep the surface condition clean.

Academic Significance and Societal Importance of the Research Achievements

本研究によって得られた低気圧・微小ギャップにおける放電のメカニズム、及び絶縁破壊特性の基礎データは、微細な機構をもつ電気機器の信頼性に直結するものであり、絶縁設計技術の合理化に指針を与えるものである。また、微小空間における放電現象は、その対象とする空間と電子の平均自由行程を比較すると真空放電に類似する点が多く、未だ統一した見解の得られていない真空放電のメカニズム解明にも資するものである。

Report

(5 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (4 results)

All 2021 2020

All Journal Article (3 results) (of which Peer Reviewed: 3 results) Presentation (1 results)

  • [Journal Article] Polarity effect of breakdown characteristics across micrometer‐scale surface gap2021

    • Author(s)
      Iwabuchi Hiroyuki、Oyama Tsutomu、Kumada Akiko、Hidaka Kunihiko
    • Journal Title

      Electrical Engineering in Japan

      Volume: 214 Issue: 2

    • DOI

      10.1002/eej.23316

    • NAID

      210000162038

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Polarity Effect of Breakdown Characteristics across Micrometer-scale Surface Gap2020

    • Author(s)
      Iwabuchi Hiroyuki、Oyama Tsutomu、Kumada Akiko、Hidaka Kunihiko
    • Journal Title

      IEEJ Transactions on Fundamentals and Materials

      Volume: 140 Issue: 7 Pages: 342-348

    • DOI

      10.1541/ieejfms.140.342

    • NAID

      130007867818

    • ISSN
      0385-4205, 1347-5533
    • Year and Date
      2020-07-01
    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] A Systematic Comparison of Intense-Mode Vacuum Arc Between CuCr and AgWC Electrode by Using Various Optical Diagnostics2020

    • Author(s)
      Inada Yuki、Kikuchi Ryo、Nagai Hiroyuki、Yamano Yasushi、Maeyama Mitsuaki、Iwabuchi Hiroyuki、Kumada Akiko、Hidaka Kunihiko、Kaneko Eiji
    • Journal Title

      IEEE Transactions on Plasma Science

      Volume: 48 Issue: 6 Pages: 1-13

    • DOI

      10.1109/tps.2020.2992675

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Presentation] mmオーダ沿面ギャップにおける放電シミュレーション2021

    • Author(s)
      岩渕大行
    • Organizer
      電気学会放電・プラズマ・パルスパワー/開閉保護/高電圧合同研究会
    • Related Report
      2021 Research-status Report

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Published: 2020-04-28   Modified: 2025-01-30  

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