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Dynamic mixing effects on hydrogen diffusion and retention in high Z materials

Research Project

Project/Area Number 15560715
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Nuclear fusion studies
Research InstitutionOsaka University

Principal Investigator

UEDA Yoshio  Osaka University, Graduate School of Engineering, Associate Professor, 大学院・工学研究科, 助教授 (30193816)

Co-Investigator(Kenkyū-buntansha) NISHIKAWA Masahiro  Osaka University, Graduate School of Engineering, Professor, 大学院・工学研究科, 教授 (50029287)
OHTSUKA Yusuke  Osaka University, Graduate School of Engineering, research associate, 大学院・工学研究科, 助手 (70294048)
Project Period (FY) 2003 – 2005
Project Status Completed (Fiscal Year 2005)
Budget Amount *help
¥3,600,000 (Direct Cost: ¥3,600,000)
Fiscal Year 2005: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 2004: ¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 2003: ¥2,100,000 (Direct Cost: ¥2,100,000)
Keywordstungsten / blistering / plasma facing materials / MeV ion beam / irradiation damage / hydrogen and carbon mixed ion beam / Me V級負イオンビーム / 水素・炭素・ヘリウム混合ビーム / プラズマ対向壁 / 水素拡散挙動 / Kドープタングステン / La_2O_3ドープタングステン / 結晶組織
Research Abstract

Hydrogen and carbon mixed ion beam was irradiated to tungsten to study the effects of dynamic mixing of tungsten and carbon layer on blistering and hydrogen diffusion characteristics. It was found that only 0.3% of carbon or more strongly enhanced blistering. Tungsten and carbon mixed layer formed on the tungsten surface acted as hydrogen emission barrier and enhanced hydrogen diffusion toward bulk, leading to blister formation. In addition to carbon, ash of fusion reaction, helium, was added to the ion beam to study the effect of helium on hydrogen behavior in tungsten. Only 0.1% of helium addition suppressed blister formation. In fusion reactors, fusion neutrons are irradiated to in vessel materials. Fast neutrons produce damages in these materials. Therefore it is important to study the effects of this irradiation damage on hydrogen behavior in tungsten. To study this subject, 700 keV hydrogen negative ion beam was irradiated to tungsten before mixed ion beam irradiation. It was found that pre irradiation of high energy hydrogen ion beam suppressed the production of small size (<10μm) blisters. In future, the effects of repetitive heat load will also investigated.

Report

(4 results)
  • 2005 Annual Research Report   Final Research Report Summary
  • 2004 Annual Research Report
  • 2003 Annual Research Report
  • Research Products

    (19 results)

All 2006 2005 2004 2003 Other

All Journal Article (15 results) Publications (4 results)

  • [Journal Article] Carbon impurity behavior on plasma facing surface of tungsten2006

    • Author(s)
      Y.Ueda, M.Fukumoto, I.Sawamura, D.Sakizono, T.Shimada, M.Nishikawa
    • Journal Title

      Fusion Eng.Des. 81

      Pages: 233-239

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Annual Research Report 2005 Final Research Report Summary
  • [Journal Article] Hydrogen Blister Formation and Cracking Behavior for Various Tungsten Materials2005

    • Author(s)
      Y.Ueda, T.Funabiki, T.Shimada, K.Fukumoto, H.Kurishita, M.Nishikawa
    • Journal Title

      Journal of Nuclear Materials 337-339

      Pages: 1010-1014

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary 2004 Annual Research Report
  • [Journal Article] Hydrogen Blister Formation and Cracking Behavior for Various Tungsten Materials2005

    • Author(s)
      Y.Ueda, T.Funabiki, T.Shimada, K.Fukumoto, H.Kurishita, M.Nishikawa
    • Journal Title

      J.Nucl.Mater. 337-339

      Pages: 1010-1014

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Effects of Carbon Impurity in Fusion Plasmas on Erosion of RAF First Wall2004

    • Author(s)
      Y.Ueda, T.Funabiki, T.Shimada, R.Kawakami, M.Nishikawa
    • Journal Title

      Journal of Nuclear Materials 329-333

      Pages: 771-774

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary 2004 Annual Research Report
  • [Journal Article] Carbon Behavior on Tungsten Surface after Carbon and Hydrogen Mixed Beam Irradiation2004

    • Author(s)
      T.Shimada, T.Funabiki, R.Kawakami, Y.Ueda, M.Nishikawa
    • Journal Title

      Journal of Nuclear Materials 329-333

      Pages: 747-751

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary 2004 Annual Research Report
  • [Journal Article] Effects of Tungsten Microstructure on Blister Formation by Hydrogen and Carbon Mixed Ion Beam Irradiation2004

    • Author(s)
      T.Funabiki, T.Shimada, Y.Ueda, M.Nishikawa
    • Journal Title

      Journal of Nuclear Materials 329-333

      Pages: 780-784

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary 2004 Annual Research Report
  • [Journal Article] Impacts of Carbon Impurity in Hydrogen Plasmas on Tungsten Blistering2004

    • Author(s)
      Y.Ueda, T.Shimada, M.Nishikawa
    • Journal Title

      Nucl.Fusion 64

      Pages: 62-67

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Effects of Carbon Impurity in Fusion Plasmas on Erosion of RAF First Wall2004

    • Author(s)
      Y.Ueda, T.Funabiki, T.Shimada, R.Kawakami, M.Nishikawa
    • Journal Title

      J.Nucl.Mater. 329-333

      Pages: 771-774

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Carbon Behavior on Tungsten Surface after Carbon and Hydrogen Mixed Beam Irradiation2004

    • Author(s)
      T.Shimada, T.Funabiki, R.Kawakami, Y.Ueda, M.Nishikawa
    • Journal Title

      J.Nucl.Mater. 329-333

      Pages: 747-751

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Effect of Tungsten Microstructure on Blister Formation by Hydrogen and Carbon Mixed Ion Beam Irradiation2004

    • Author(s)
      T.Funabiki, T.Shimada, Y.Ueda, M.Nishikawa
    • Journal Title

      J.Nucl.Mater. 329-333

      Pages: 780-784

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Simulation Study of Dynamical Material Mixing on Tungsten Surfaces at Elevated Temperatures due to Hydrogen and Carbon Mixed Ion Beam Irradiation2004

    • Author(s)
      R.Kawakami, T.Shimada, Y.Ueda, M.Nishikawa
    • Journal Title

      Journal of Nuclear Materials 329-333

      Pages: 737-741

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Blister Formation of Tungsten by Hydrogen and Carbon Mixed Ion Beam Irradiation2003

    • Author(s)
      T.Shimada, H.Kikuchi, Y.Ueda, A.Sagara, M.Nishikawa
    • Journal Title

      Journal of Nuclear Materials 313-316

      Pages: 204-208

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Mechanism of blister formation on tungsten surface2003

    • Author(s)
      T.Shimada, Y.Ueda, M.Nishikawa
    • Journal Title

      Fusion Engineering and Design 66-68

      Pages: 247-251

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Blister Formation of Tungsten by Hydrogen and Carbon Mixed Ion Beam Irradiation2003

    • Author(s)
      T.Shimada, H.Kikuchi, Y.Ueda, A.Sagara, M.Nishikawa
    • Journal Title

      J.Nucl.Mater. 313-316

      Pages: 204-208

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Mechanism of blister formation on tungsten surface2003

    • Author(s)
      T.Shimada, Y.Ueda, M.Nishikawa
    • Journal Title

      Fusion Eng.Des. 247

      Pages: 66-68

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Publications] T.Shimada, H.Kikuchi, Y.Ueda, A.Sagara, M.Nishikawa: "Blister Formation of Tungsten by Hydrogen and Carbon Mixed Ion Beam Irradiation"Journal of Nuclear Materials. 313-316. 204-208 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] T.Shimada, Y.Ueda, M.Nishikawa: "Mechanism of blister formation on tungsten surface"Fusion Engineering and Design. 66-68. 247-252 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] R.Kawakami, T.Shimada, Y.Ueda, M.Nishikawa: "Dynamic Behavior or Tungsten Surfaces due to Simultaneous Impact of Hydrogen and Carbon Ion Beam"Japanese Journal of Applied Physics. 12. 7529-7535 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Y.Ueda, T.Shimada, M.Nishikawa: "Impacts of Carbon Impurity in Hydrogen Plasmas on Tungsten Blistering"Nuclear Fusion. 64. 62-67 (2004)

    • Related Report
      2003 Annual Research Report

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Published: 2003-04-01   Modified: 2016-04-21  

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