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Application of a weak-ionized plasma high-temperature flow for material development and treatment of hazardous substance, and its flow diagnostics

Research Project

Project/Area Number 15560142
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Fluid engineering
Research InstitutionTottori University

Principal Investigator

KAWAZOE Hiromitsu  Tottori University, Faculty of Engineering, Mechanical Engineering, Professor, 工学部, 教授 (40260591)

Project Period (FY) 2003 – 2005
Project Status Completed (Fiscal Year 2005)
Budget Amount *help
¥3,500,000 (Direct Cost: ¥3,500,000)
Fiscal Year 2005: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 2004: ¥1,200,000 (Direct Cost: ¥1,200,000)
Fiscal Year 2003: ¥1,700,000 (Direct Cost: ¥1,700,000)
KeywordsWeak ionized plasma / Arc-heated wind tunnel / Supersonic / Spectroscopy / Material change / Material hardness / Numerical simulation / EPMA / 合金
Research Abstract

Weak ionized high temperature nitrogen plasma flow could be generated stably with the electrical energy of 9 kW. Optical diagnostics for the flow field, where a blunt cylindrical body was set, was undertaken to measure vibrational and rotational temperatures of the nitrogen, T_<vib> and T_<rot>. T_<rot> was 3,000±500 K and 2,500±500 K for the case of Mach number 5 and 6, respectively. On the other hand, T_<vib> was almost constant in the whole flow field for the both cases. It is considered that the required time for a nitrogen molecule to collide with an electron and its collision frequency might be the major factors for the reason.
Copper and zinc components of a disc-shaped brass, which was exposed in the plasma flow, was drastically changed spatially. Furthermore, this weak ionized nitrogen plasma flow was found to have the ability to make steel hard by the gas nitriding. The steel with the Vickers hardness of 230 changed to be harder with the Vickers value of 630, and hardness of the steel was also changed spatially. It also suggests that the ionized nitrogen flow can be utilized to product a functionally gradient material.
Nitrogen and oxygen mixture was ionized by the arc-plasma flow facility and the neutral O I and N I atoms was investigated optically by the Boltzmann plots method. The excited O I and N I temperatures were delived to be 18,500 K and 17,500K, respectively. Therefore, the temperature of a free electron should be 18,000±500K.

Report

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

    (19 results)

All 2005 2004 2003 Other

All Journal Article (16 results) Book (1 results) Publications (2 results)

  • [Journal Article] 高温プラズマ気流を利用した金属材料の改質とその流れ場について2005

    • Author(s)
      友滝鉄志, 竹田大輔, 川添博光
    • Journal Title

      日本航空宇宙学会第49回宇宙科学技術連合講演会講演集 2G16

      Pages: 968-971

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Annual Research Report 2005 Final Research Report Summary
  • [Journal Article] 超音速高エンタルピー窒素気流の新材料開発への応用2005

    • Author(s)
      竹田大輔, 友滝鉄志, 川添博光
    • Journal Title

      日本機械学会中国四国支部第44回総会・講演会講演論文集 No.065-1

      Pages: 127-128

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Annual Research Report 2005 Final Research Report Summary
  • [Journal Article] Material Alteration of Metal by High Temperature Plasma Flow and Its Flow Field2005

    • Author(s)
      Tomotaki, T., Takeda, D., Kawazoe, H.
    • Journal Title

      Proc.49th Space Sciences and Technology Conf.(in Japanese) 2G16(CD-ROM)

      Pages: 968-971

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Application of Supersonic High Enthalpy Nitrogen Flow to Development of New Material2005

    • Author(s)
      Takeda, D., Tomotaki, T., Kawazoe, H.
    • Journal Title

      Proc 44th JSME Tyuu-Shikoku-branch Annual Meeting(in Japanese) No.065-1

      Pages: 127-128

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] 超音速高エンタルピー窒素気流に晒した鈍頭物体の組成改質と気流の光学診断2004

    • Author(s)
      山内崇, 友滝鉄志, 川添博光
    • Journal Title

      日本航空宇宙学会第35期年会講演会講演集

      Pages: 32-35

    • 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 supersonic high enthalpy nitrogen flow on surface quality of blunt body metal alloy and optical diagnosis of the flow field2004

    • Author(s)
      H.Kawazoe, T.Yamauchi, T.Tomotaki
    • Journal Title

      Proc. 24th International Symposium on Space Technology and Science e-39(CD-ROM)

      Pages: 1-5

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] 鈍頭物体前方の超音速高エンタルピー窒素気流の光学診断2004

    • Author(s)
      友滝鉄志, 山内 崇, 川添博光
    • Journal Title

      日本機械学会関西支部第79期定時総会講演会講演論文集 No.044-1

    • 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] Material Ingredient Alteration of Blunt Body Exposed by Supersonic High Enthalpy Nitrogen Flow and Optical Diagnostics of the Flow2004

    • Author(s)
      Yamauchi, T., Tomotaki, T., Kawazoe, H.
    • Journal Title

      35th Anual Meeting of the Japan Society for Aeronautical and Space Sciences(in Japanese)

      Pages: 32-35

    • 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 Supersonic High Enthalpy Nitrogen Flow on Surface Quality of Blunt body Metal Alloy and Optical Diagnosis of the Flow Field2004

    • Author(s)
      Kawazoe, H., Yamauchi, T., Tomotaki, T.
    • Journal Title

      Proc.24th International Symposium on Space Technology and Science(in Japanese) e-39(CD-ROM)

      Pages: 1-15

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Optical Diagnostics of Supersonic High Enthalpy Nitrogen Flow ahead of Blunt Body2004

    • Author(s)
      Tomotaki, T., Yamauchi, T., Kawazoe, H.
    • Journal Title

      Proc 79th JSME Kansai-branch Annual Meeting(in Japanese) 044-1

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] High Enthalpy Flow by Arc-Heated Wind Tunnel and Its Application2004

    • Author(s)
      Kawazoe, H.
    • Journal Title

      Introduction to Space Engineering, JSME Space Engineering Section

      Pages: 193-193

    • 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 supersonic high enthalpy nitrogen flow on surface quality of blunt body metal alloy and optical diagnosis of the flow field2004

    • Author(s)
      H.Kawazoe, T.Yamauchi, T.Tomotaki
    • Journal Title

      Proc.24th International Symposium on Space Technology and Science e-39(CD-ROM)

      Pages: 1-5

    • Related Report
      2004 Annual Research Report
  • [Journal Article] アークプラズマ風洞による高エンタルピー気流とその利用2004

    • Author(s)
      川添博光
    • Journal Title

      宇宙工学概論(日本機械学会宇宙工学部門編集)

      Pages: 5-12

    • Related Report
      2004 Annual Research Report
  • [Journal Article] 鈍頭物体まわりの超音速弱電離プラズマ窒素気流の振動・回転温度について2004

    • Author(s)
      友滝鉄志, 山内崇, 川添博光
    • Journal Title

      日本流体力学会年会2004講演論文集

      Pages: 368-369

    • Related Report
      2004 Annual Research Report
  • [Journal Article] 超音速高エンタルピー窒素気流による鈍頭物体表面の改質と気流特性2003

    • Author(s)
      山内崇, 川添博光, 友滝鉄志
    • Journal Title

      第47回宇宙科学技術連合講演会講演集 ldl5(CD-ROM)

      Pages: 280-283

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Material Change of Blunt Body Surface by Supersonic High Enthalpy Nitrogen Flow and the Flow Characteristics2003

    • Author(s)
      Yamauchi, T., Kawazoe, H., Tomotaki, T.
    • Journal Title

      Proc.47th Space Sciences and Technology Conf.(in Japanese) 1D15(CD-ROM)

      Pages: 280-283

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Book] 宇宙工学概論(日本機械学会宇宙工学部門編集)2004

    • Author(s)
      川添博光
    • Total Pages
      193
    • Publisher
      アークプラズマ風洞による高エンタルピー気流とその利用
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Publications] 山内崇, 川添博光, 友滝鉄志: "超音速高エンタルピー窒素気流による鈍頭物体表面の改質と気流特性"第47回宇宙科学技術連合講演会講演集. CD-ROM・1D15. 280-283 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] 山内崇, 川添博光, 友滝鉄志: "鈍頭物体前方の超音速高エンタルピー窒素気流の光学診断"日本機械学会関西支部第79期定時総会講演会講演論文集. 044-1. 8-17-8-18 (2004)

    • Related Report
      2003 Annual Research Report

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

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