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Shock synthesis, ultrasound measurement, and ab-initio calculation for elastic constants of hexagonal diamond

Research Project

Project/Area Number 24860039
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeSingle-year Grants
Research Field Materials/Mechanics of materials
Research InstitutionOsaka University

Principal Investigator

TANIGAKI Kenichi  大阪大学, 基礎工学研究科, 助教 (40631875)

Project Period (FY) 2012-08-31 – 2014-03-31
Project Status Completed (Fiscal Year 2013)
Budget Amount *help
¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2013: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2012: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords衝撃圧縮合成 / 炭素高圧相 / グラファイト / 火薬銃 / Sカーボン / 衝撃工学 / ダイヤモンド
Research Abstract

Recently, theoretical computational studies have proposed several structures of high-pressure phase of carbon. Although some of these proposed phases of carbon have been synthesized at high pressure, they have not been observed at normal pressure. In this study, we made mixtures of copper powder of 50x10^-6 m diameter with high purity graphite powder of 50x10^-6 m diameter to control shock temperature rise and to quench efficiently, and shock compressed it using powder gun. Several new peaks were observed in XRD patterns of the carbon component retrieved from the mixture of 0.4 relative density after shock compression (18 GPa, 2100 K), which suggest existence of S-carbon, R-carbon, and W-carbon phase in the resultant carbon component at normal pressure.

Report

(3 results)
  • 2013 Annual Research Report   Final Research Report ( PDF )
  • 2012 Annual Research Report
  • Research Products

    (4 results)

All 2014 2013 2012

All Presentation (4 results)

  • [Presentation] 火薬銃を用いたグラファイトの衝撃圧縮による高圧相の合成2014

    • Author(s)
      石田嵩教,谷垣健一,堀川敬太郎,小林秀敏
    • Organizer
      M&M2014材料力学カンファレンス
    • Place of Presentation
      (採択済み)
    • Related Report
      2013 Final Research Report
  • [Presentation] 火薬銃を用いたグラファイトの衝撃圧縮による高圧相の合成2014

    • Author(s)
      石田嵩教,谷垣健一,堀川敬太郎,小林秀敏
    • Organizer
      日本機械学会M&M2014材料力学カンファレンス
    • Place of Presentation
      福島大学
    • Related Report
      2013 Annual Research Report
  • [Presentation] 衝撃圧縮による六方晶ダイヤモンドの合成2013

    • Author(s)
      石田嵩教、谷垣健一、小林秀敏、堀川敬太郎
    • Organizer
      日本機械学会関西支部
    • Place of Presentation
      大阪工業大学
    • Related Report
      2012 Annual Research Report
  • [Presentation] 衝撃圧縮による六方晶ダイヤモンドの合成2012

    • Author(s)
      石田嵩教,谷垣健一,堀川敬太郎,小林秀敏
    • Organizer
      関西学生会学生員卒業研究発表会
    • Place of Presentation
      大阪工業大学
    • Year and Date
      2012-03-17
    • Related Report
      2013 Final Research Report

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Published: 2012-11-27   Modified: 2019-07-29  

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