Investigation of cubic boron nitride field emission cathode

• Project/Area Number: 26630444
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Aerospace engineering
• Research Institution: Kyushu University
• Principal Investigator: Yamamoto Naoji 九州大学, 総合理工学研究科(研究院), 教授 (40380711)
• Co-Investigator(Kenkyū-buntansha): OHKAWA YASUSHI 宇宙航空研究開発機構, 研究開発本部・研究院 (20415920)
• Project Period (FY): 2014-04-01 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000); Fiscal Year 2015: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000); Fiscal Year 2014: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
• Keywords: 推進・エンジン / 電子源 / 電界放出型カソード / 立方晶窒化ホウ素 / 人工衛星 / 航空宇宙工学 / 半導体物性

Outline of Final Research Achievements

As an electron source of an Electro dynamic tether system and ion engine system, a field emission cathode with cubic boron nitride (cBN) thin layer have been developed. The maximum extracted current is 107 micro A; the current density is 0.55 mA/cm^2.
The influence of atomic oxygen on extracted performance was investigated at atomic oxygen injection test was conducted Atomic oxygen durability test facility in Kyushu institute of technology. The result showed that Field emission cathode with cBN has atomic oxygen tolerance.

Research Products

• [Presentation] 立方晶窒化ホウ素を材料に用いた電界放出型カソードの開発 (2016)
  • Author(s): 山本 直嗣，川原 友太郎,船木 一幸，大川 恭志
  • Organizer: 宇宙科学に関する室内シンポジウム
  • Place of Presentation: 宇宙科学研究所、相模原
  • Year and Date: 2016-02-23
• [Presentation] 立方晶窒化ホウ素を用いた電界放出カソードの開発 (2014)
  • Author(s): 坂井寿光,山本直嗣,大川恭志,堤井君元,船木一幸
  • Organizer: 第58回宇宙科学技術連合講演会
  • Place of Presentation: 長崎ブリックホール・長崎新聞文化ホール
  • Year and Date: 2014-11-12 – 2014-11-14
• [Remarks] 立方晶窒化ホウ素を材料に用いた電界放出型カソードの開発
  • URL: http://art.aees.kyushu-u.ac.jp/research/Pla_appli.html
• [Remarks] プラズマ応用
  • URL: http://art.aees.kyushu-u.ac.jp/research/Pla_appli.html