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Development of one-step synthesis of organic-modified nanopowder by supercritical plasma flow control

Research Project

Project/Area Number 18H01371
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 19010:Fluid engineering-related
Research InstitutionOsaka University (2018, 2020)
Tohoku University (2019)

Principal Investigator

茂田 正哉  大阪大学, 接合科学研究所, 准教授 (30431521)

Co-Investigator(Kenkyū-buntansha) 田中 学  大阪大学, 接合科学研究所, 教授 (20243272)
Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥17,160,000 (Direct Cost: ¥13,200,000、Indirect Cost: ¥3,960,000)
Fiscal Year 2020: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2019: ¥10,530,000 (Direct Cost: ¥8,100,000、Indirect Cost: ¥2,430,000)
Fiscal Year 2018: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Keywords流体工学
Outline of Annual Research Achievements

本研究は、超臨界プラズマという特異物質相の流れを利用して、有機修飾複合ナノ粒子の生成量・サイズ・組成を制御しながらクリーンかつワンステップで大量合成するという新手法を流体工学的立場から確立することを目的としている。2020年度は、複数同期型の高速度画像分光システムを用いて広範囲のアルゴン-ヘリウム混合アークプラズマとその中に共存する鉄やクロムの金属蒸気プラズマの発光スペクトルを診断し、さらに数値シミュレーションとの併用によって、金属イオンが電極近傍からの高速流に逆らって遡上し、その結果として電極側方およびプラズマ外縁で金属ラジカルが濃化して定常的に分布するメカニズムを明らかにした。また、それに起因して電極表面での合金化が進むことで融点が降下して溶け落ちるという電極劣化メカニズムも明らかにした。一方で、数値シミュレーションに基づいた理論的研究も進めた。研究代表者が構築した数理モデルを用いて、プラズマ環境下で異方性の合金ナノ粒子が二元系核生成・二元系共凝縮・粒子間衝突合体により集団形成する過程を数値解析的に明らかにした。また、非移行式アークプラズマジェット、非電離気体、ナノ粒子群が共存する乱流場の非定常3次元数値シミュレーションにも成功し、長年未解明であったプラズマジェット遠方の渦誘発現象の原理に迫る知見を得るとともに、プラズマ外縁の流体力学的不安定性に起因する揺らぎが低温の下流域におけるナノ粒子の空間分布と強い相関を示すことも明らかにした。また、アークプラズマ環境で異種の金属粉体が混合液滴を形成しながら電極から離脱する現象、および溶融金属が化学反応を経て酸化物を形成し輸送される現象を粒子法シミュレーションの拡張によって再現に成功し、各プロセスの詳細を明らかにした。

Research Progress Status

令和2年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

令和2年度が最終年度であるため、記入しない。

Report

(3 results)
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • 2018 Annual Research Report

Research Products

(45 results)

All 2021 2020 2019 2018 Other

All Int'l Joint Research (5 results) Journal Article (16 results) (of which Int'l Joint Research: 8 results,  Peer Reviewed: 16 results,  Open Access: 5 results) Presentation (24 results) (of which Int'l Joint Research: 20 results,  Invited: 9 results)

  • [Int'l Joint Research] オーストラリア連邦科学産業研究機構(オーストラリア)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] オーストラリア連邦科学産業研究機構(オーストラリア)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] ボローニャ大学(イタリア)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] オーストラリア連邦科学産業研究機構(オーストラリア)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] ボローニャ大学(イタリア)

    • Related Report
      2018 Annual Research Report
  • [Journal Article] Modelling and measurements of gas tungsten arc welding in argon-helium mixtures with metal vapour,2021

    • Author(s)
      Junting Xiang, Keigo Tanaka, Fiona F. Chen, Masaya Shigeta, Manabu Tanaka, Anthony B. Murphy
    • Journal Title

      Welding in the World

      Volume: 65 Pages: 767-783

    • DOI

      10.1007/s40194-020-01053-4

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Numerical Investigation of Heat Transfer During Submerged Arc Welding Phenomena by Coupled DEM-ISPH Simulation2021

    • Author(s)
      Hisaya Komen, Masaya Shigeta, Manabu Tanaka, Yohei Abe, TakahiroFujimoto, Mitsuyoshi Nakatani, Anthony B. Murphy
    • Journal Title

      International Journal of Heat and Mass Transfer

      Volume: 171

    • DOI

      10.1016/j.ijheatmasstransfer.2021.121062

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Electrode contamination caused by metal vapour transport during tungsten inert gas welding2021

    • Author(s)
      Keigo Tanaka, Masaya Shigeta, Hisaya Komen & Manabu Tanaka
    • Journal Title

      Science and Technology of Welding and Joining

      Volume: 26 Pages: 258-263

    • DOI

      10.1080/13621718.2021.1893024

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Anisotropic Nd-Fe ultrafine particles with stable and metastable phases prepared by induction thermal plasma2021

    • Author(s)
      Y. Hirayama, M. Shigeta, Z. Liu, N. Yodoshi, A. Hosokawa, K. Takagi
    • Journal Title

      Journal of Alloys and Compounds

      Volume: 873

    • DOI

      10.1016/j.jallcom.2021.159724

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Imaging Spectroscopy for Transient Transport of Chromium Vapor During Helium TIG Welding2020

    • Author(s)
      Keigo TANAKA, Masaya SHIGETA, Manabu TANAKA, Anthony B. MURPHY
    • Journal Title

      QUARTERLY JOURNAL OF THE JAPAN WELDING SOCIETY

      Volume: 38 Issue: 2 Pages: 21s-24s

    • DOI

      10.2207/qjjws.38.21s

    • NAID

      130007964248

    • ISSN
      0288-4771, 2434-8252
    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Simulating Turbulent Thermal Plasma Flows for Nanopowder Fabrication2020

    • Author(s)
      Masaya Shigeta
    • Journal Title

      Plasma Chemistry and Plasma Processing

      Volume: 40 Pages: 775-794

    • DOI

      10.1007/s11090-020-10060-8

    • Related Report
      2020 Annual Research Report 2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Numerical Simulation of Droplet Transfer with TiO2 Flux Column During Flux Cored Arc Welding by 3D Smoothed Particle Hydrodynamics Method2020

    • Author(s)
      Ryo UENO, Hisaya KOMEN, Masaya SHIGETA, Manabu TANAKA
    • Journal Title

      QUARTERLY JOURNAL OF THE JAPAN WELDING SOCIETY

      Volume: 38 Issue: 2 Pages: 84s-88s

    • DOI

      10.2207/qjjws.38.84s

    • NAID

      130007964259

    • ISSN
      0288-4771, 2434-8252
    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Investigation of transient metal vapour transport processes in helium arc welding by imaging spectroscopy2020

    • Author(s)
      Keigo Tanaka, Masaya Shigeta, Manabu Tanaka, Anthony B. Murphy
    • Journal Title

      Journal of Physics D: Applied Physics

      Volume: 53 Pages: 425202-425202

    • DOI

      10.1088/1361-6463/ab9ce4

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Numerical study of the metal vapour transport in tungsten inert-gas welding in argon for stainless steel2020

    • Author(s)
      Xiang Junting、Chen Fiona F.、Park Hunkwan、Tanaka Keigo、Shigeta Masaya、Tanaka Manabu、Murphy Anthony B.
    • Journal Title

      Applied Mathematical Modelling

      Volume: 79 Pages: 713-728

    • DOI

      10.1016/j.apm.2019.11.001

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Numerical study of the effects and transport mechanisms of iron vapour in tungsten inert-gas welding in argon2019

    • Author(s)
      Xiang Junting、Park Hunkwan、Tanaka Keigo、Shigeta Masaya、Tanaka Manabu、Murphy Anthony B
    • Journal Title

      Journal of Physics D: Applied Physics

      Volume: 53 Pages: 044004-044004

    • DOI

      10.1088/1361-6463/ab51f3

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Numerical Analysis of the Correlation between Arc Plasma Fluctuation and Nanoparticle Growth?Transport under Atmospheric Pressure2019

    • Author(s)
      Shigeta Masaya、Tanaka Manabu、Ghedini Emanuele
    • Journal Title

      Nanomaterials

      Volume: 9 Pages: 1736-1736

    • DOI

      10.3390/nano9121736

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Visualization of electromagnetic-thermal-fluid phenomena in arc welding2019

    • Author(s)
      Shigeta Masaya、Tanaka Manabu
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 59 Issue: SA Pages: SA0805-SA0805

    • DOI

      10.7567/1347-4065/ab4e63

    • NAID

      210000157358

    • ISSN
      0021-4922, 1347-4065
    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Investigation of the bilayer region of metal vapor in a helium tungsten inert gas arc plasma on stainless steel by imaging spectroscopy2019

    • Author(s)
      Tanaka Keigo、Shigeta Masaya、Tanaka Manabu、Murphy Anthony B
    • Journal Title

      Journal of Physics D: Applied Physics

      Volume: 52 Pages: 354003-354003

    • DOI

      10.1088/1361-6463/ab2441

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] The Relation Between Electrode Lifetime and Additive Consumption During TIG Welding2019

    • Author(s)
      Tanaka Keigo、Yamada Tetsuo、Shigeta Masaya、Tanaka Manabu、Nakabayashi Seiji
    • Journal Title

      QUARTERLY JOURNAL OF THE JAPAN WELDING SOCIETY

      Volume: 37 Issue: 4 Pages: 4WL-6WL

    • DOI

      10.2207/qjjws.37.4wl

      10.2207/qjjws.37.4WL

    • NAID

      130007769167

    • ISSN
      0288-4771, 2434-8252
    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Visualization of Submerged Arc Welding Phenomena by X-ray Observation and Direct Observation2018

    • Author(s)
      Hisaya Komen, Yohei Abe, Takahiro Fujimoto, Masaya Shigeta, Mitsuyoshi Nakatani, Manabu Tanaka
    • Journal Title

      QUARTERLY JOURNAL OF THE JAPAN WELDING SOCIETY

      Volume: 36 Issue: 4 Pages: 9WL-12WL

    • DOI

      10.2207/qjjws.36.9wl

      10.2207/qjjws.36.9WL

    • NAID

      130007555847

    • ISSN
      0288-4771, 2434-8252
    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Numerical Simulation of Molten Metal Droplet Behavior in Gas Metal Arc Welding by Three-Dimensional Incompressible Smoothed Particle Hydrodynamics Method2018

    • Author(s)
      Komen Hisaya、Shigeta Masaya、Tanaka Manabu
    • Journal Title

      Journal of Flow Control, Measurement & Visualization

      Volume: 06 Pages: 66-81

    • DOI

      10.4236/jfcmv.2018.62007

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] 熱プラズマ流体・材料プロセス研究を主軸として歩み得てきたもの2021

    • Author(s)
      茂田 正哉
    • Organizer
      2021年第68回応用物理学会春季学術講演会
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] 溶接プロセスシミュレーションの手法・適用例・活用法2020

    • Author(s)
      茂田 正哉
    • Organizer
      溶接学会 2020年度 秋季全国大会
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] Modelling and Simulation of Turbulent Thermal Plasma Flows for Nanopowder Mass Production2020

    • Author(s)
      Masaya Shigeta
    • Organizer
      7th Plasma Science & Entrepreneurship workshop
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 高エンタルピープラズマ流による材料プロセッシングの数値解析的研究2020

    • Author(s)
      茂田 正哉
    • Organizer
      第37回プラズマ・核融合学会
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] The relation between TIG electrode consumption and a light emitting region near electrode2020

    • Author(s)
      Keigo Tanaka, Masaya Shigeta, Manabu Tanaka, Anthony B. Murphy
    • Organizer
      73rd IIW Annual Assembly and International Conference
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Identification of Light Emitting Elements near Electrode During TIG Welding2020

    • Author(s)
      Keigo Tanaka, Masaya Shigeta, Manabu Tanaka
    • Organizer
      Seventeenth International Conference on Flow Dynamics
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Three-dimensional SPH Simulation of Droplet Transfer with Flux column During Flux Cored Arc Welding2020

    • Author(s)
      Ryo Ueno, Masaya Shigeta, Manabu Tanaka
    • Organizer
      Seventeenth International Conference on Flow Dynamics
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] NUMERICAL INVESTIGATION OF CORRELATION BETWEEN ARC PLASMA FLUCTUATION AND NANOPOWDER DISTRIBUTION2019

    • Author(s)
      Masaya Shigeta, Manabu Tanaka, Emanuele Ghedini
    • Organizer
      The Second Pacific Rim Thermal Engineering Conference
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Imaging Spectroscopy for Dynamic Transport of chromium Vapor During a Helium TIG Welding2019

    • Author(s)
      Keigo Tanaka, Masaya Shigeta, Manabu Tanaka, Anthony B. Murphy
    • Organizer
      The 5th International Symposium on Visualization in Joining & Welding Science through Advanced Measurements and Simulation & The 8th International Conference of Welding Science and Engineering
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Numerical Simulation of Droplet Transfer with Flux Column During Flux Cored Arc Welding by Three-dimensional Smoothed Particle Hydrodynamics Method2019

    • Author(s)
      Ryo Ueno, Hisaya Komen, Masaya Shigeta, Manabu Tanaka
    • Organizer
      The 5th International Symposium on Visualization in Joining & Welding Science through Advanced Measurements and Simulation & The 8th International Conference of Welding Science and Engineering
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] アーク溶接を観て診る2019

    • Author(s)
      茂田 正哉
    • Organizer
      高速度イメージングとフォトニクスに関する総合シンポジウム2019
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] Effect of metal vapor transport on melting and deformation of tungsten electrode during TIG welding2019

    • Author(s)
      Keigo Tanaka, Masaya Shigeta, Manabu Tanaka
    • Organizer
      The Symposium of Thailand Welding and Inspection Technology 2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Particle method simulation of slag transport and formation process during MAG welding2019

    • Author(s)
      Kazuya Tatsumi, Hisaya Komen, Masaya Shigeta, Manabu Tanaka
    • Organizer
      The Symposium of Thailand Welding and Inspection Technology 2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Effect of Metal Vapor Transport on Tungsten Electrode Consumption During TIG Welding2019

    • Author(s)
      K. Tanaka, M. Shigeta and M. Tanaka
    • Organizer
      72nd IIW Annual Assembly and International Conference
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Computational study of droplet detachment mechanism in flux-cored arc welding by SPH method2019

    • Author(s)
      M. Shigeta, T. Sugai, M. Tanaka, H. Komen, N. Mukai and Y. Inoue
    • Organizer
      72nd IIW Annual Assembly and International Conference
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] To simulate turbulent thermal plasma flows for nanopowder fabrication2019

    • Author(s)
      Masaya Shigeta
    • Organizer
      24th International Symposium on Plasma Chemistry
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] To see thermofluid dynamics in arc welding processes2019

    • Author(s)
      Masaya Shigeta, Manabu Tanaka
    • Organizer
      12th International Conference on Plasma-Nano Technology & Science (IC-PLANTS2019)
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Investigation of the Relation Between Chromium Vapor and Iron Vapor During TIG Welding by Imaging Spectroscopy2019

    • Author(s)
      Keigo Tanaka, Masaya Shigeta, Manabu Tanaka, A. B. Murphy
    • Organizer
      Joint Intermediate Meeting of IIW Comm. I, IV, XII and SG212
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Modelling and simulation of growth-transport processes of fume nanoparticles in TIG welding2018

    • Author(s)
      Masaya Shigeta, Manabu Tanaka
    • Organizer
      The Symposium of Thailand Welding and Inspection Technology 2018
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Modelling and Simulation of Nanoparticles' Growth and Transport during Arc Welding2018

    • Author(s)
      Masaya Shigeta
    • Organizer
      HORIZON 2020, NanoDome User-Conference and project closure meeting
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] THREE-DIMENSIONAL NUMERICAL SIMULATION OF MOLTEN METAL CONVECTION DURING SUBMERGED ARC WELDING USING DEM-ISPH METHOD2018

    • Author(s)
      HISAYA KOMEN, MASAYA SHIGETA, MANABU TANAKA, YOHEI ABE, TAKAHIRO FUJIMOTO, MITSUYOSHI NAKATANI
    • Organizer
      ISER 404th International Conference on Heat Transfer and Fluid Flow (ICHTFF)
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Experimental Investigation on Surface Condition of Tungsten Electrode with Metal Vapor from Weld Pool during TIG Welding2018

    • Author(s)
      K. Tanaka, M. Shigeta and M. Tanaka
    • Organizer
      71st IIW Annual Assembly and International Conference
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Numerical analysis of correlation between arc plasma's fluctuation and fume particles' growth-transport in TIG welding2018

    • Author(s)
      M. Shigeta, M. Tanaka
    • Organizer
      71st IIW Annual Assembly and International Conference
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Fundamental Study on Welding Phenomena of Submerged Arc Welding with X-ray Observation2018

    • Author(s)
      Y. Abe, T. Fujimoto, M. Nakatani, H. Komen, M. Shigeta, M. Tanaka
    • Organizer
      71st IIW Annual Assembly and International Conference
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research

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Published: 2018-04-23   Modified: 2022-12-28  

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