Development of novel electromagnetic absorbers using carbon nanotube/alumina composites

• Project/Area Number: 24656079
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Single-year Grants
• Research Field: Materials/Mechanics of materials
• Research Institution: Tohoku University
• Principal Investigator: YAMAMOTO Go 東北大学, 工学(系)研究科(研究院), 助教 (30436159)
• Project Period (FY): 2012-04-01 – 2014-03-31
• Project Status: Completed (Fiscal Year 2013)
• Budget Amount: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000); Fiscal Year 2013: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000); Fiscal Year 2012: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
• Keywords: カーボンナノチューブ / 複合材料 / セラミックス / 電磁波吸収特性

Research Abstract

Electromagnetic absorption properties of pressureless-sintered multi-walled carbon nanotube (MWCNT)/alumina composites have been investigated using four types of MWCNTs having different crystallinity as well as diameter and length; the influence of crystallinity, diameter and length on the composites' electromagnetic absorption properties have been explored. It has been found that the composites containing the MWCNT annealed at 2873 K with higher degree of crystallinity showed higher electromagnetic absorption properties compared to other types of MWCNTs as well as alumina alone. It has been also shown that differences in the diameter and length of the MWCNTs lead to no significant impact on the electromagnetic absorption properties of the composites.

Research Products

• [Presentation] カーボンナノチューブを用いたセラミックス基複合材料の開発と応用展開 (2013)
  • Author(s): 山本剛, 白須圭一, 野坂陽, 橋田俊之
  • Organizer: 第1回カーボンナノチューブコンポジットワークショップ
  • Place of Presentation: 熱海
  • Year and Date: 2013-08-29
  • Invited
• [Presentation] カーボンナノチュブを用いたセラミックス基複合材料の開発と応用展開 (2013)
  • Author(s): 山本剛，白須圭一，野坂陽，橋田俊之
  • Organizer: 第1回カーボンナノチューブコンポジットワークショップ
  • Place of Presentation: KKRホテル熱海（静岡県熱海市）
  • Invited
• [Remarks]
  • URL: http://www.hashidalab.rift.mech.tohoku.ac.jp/
• [Remarks] 東北大学工学研究科附属エネルギー安全科学国際研究センター橋田研究室ホームページ
  • URL: http://www.hashidalab.rift.mech.tohoku.ac.jp/
• [Remarks] 東北大学大学院研究科 橋田研究室のHP
  • URL: http://www.hashidalab.rift.mech.tohoku.ac.jp/