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Production process of Al-Mg-Sc master alloy for microalloying

Research Project

Project/Area Number 21H01678
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 26060:Metals production and resources production-related
Research InstitutionTohoku University

Principal Investigator

Takeda Osamu  東北大学, 工学研究科, 准教授 (60447141)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥17,160,000 (Direct Cost: ¥13,200,000、Indirect Cost: ¥3,960,000)
Fiscal Year 2023: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2022: ¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000)
Fiscal Year 2021: ¥7,930,000 (Direct Cost: ¥6,100,000、Indirect Cost: ¥1,830,000)
Keywordsマイクロアロイング / スカンジウム / 母合金 / 熱還元 / アルミニウム合金
Outline of Research at the Start

本研究では,アルミニウム(Al)-マグネシウム(Mg)-スカンジウム(Sc)母合金の効率的な製造を目指して,ScCl3のMg熱還元法を開発する。ScはAl合金の特性を飛躍的に向上させるが,商業的に利用可能な濃縮された鉱床が存在せず,資源供給がほとんどなかった。しかし,近年,ニッケル(Ni)製錬の技術革新によってSc2O3が副産物として大量に供給可能となり,Scの資源供給ポテンシャルが急増した。このSc2O3を原料として,Al母合金の大量生産・高速度製造に適したMg熱還元法を開発する。Al-Mg-Sc合金を低コストで供給することで輸送機器の劇的な軽量化に寄与し,CO2発生の大幅な低減に資する。

Outline of Final Research Achievements

In this study, toward the efficient production of aluminum (Al)-magnesium (Mg)-scandium (Sc) master alloy, thermodynamic properties of reaction system related to the magnesiothermic reduction of ScCl3 was measured and a reduction-alloying process was developed. As a result, phase equilibria in the Al-Mg-Sc ternary system at 800 to 1000 degree C, those are not experimentally reported, were revealed by using chemical equilibrating method. Furthermore, a co-reduction process of molten salt containing scandium and aluminum ions by magnesium was developed, and Al-Mg-Sc alloy was successfully formed.

Academic Significance and Societal Importance of the Research Achievements

スカンジウムは電気自動車の構造材料などに用いられるアルミニウム合金の特性を飛躍的に向上させるが、商業的に利用可能な濃縮された鉱床が存在せず、資源供給がほとんどなかった。しかし、近年、ニッケル(Ni)製錬の技術革新によって酸化スカンジウムが副産物として大量に供給可能となり、スカンジウムの資源供給ポテンシャルが急増した。本研究では、酸化スカンジウムを始原料としたアルミニウム母合金の大量生産・高速度製造に適したマグネシウム熱還元法を開発した。Al-Mg-Sc合金を低コストで供給することで輸送機器の劇的な軽量化に寄与し、二酸化炭素発生の大幅な低減に資すると期待される。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Annual Research Report
  • 2021 Annual Research Report
  • Research Products

    (13 results)

All 2024 2023 2022 2021

All Journal Article (4 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 4 results) Presentation (6 results) (of which Int'l Joint Research: 4 results,  Invited: 2 results) Book (3 results)

  • [Journal Article] Viscosity of molten Cu-M alloys (M = Ni, Al)2023

    • Author(s)
      Takeda Osamu, Ouchi Noritaka, Takagi Kounosuke, Sato Yuzuru, Zhu Hogmin
    • Journal Title

      High Temperatures-High Pressures

      Volume: 52 Issue: 3-4 Pages: 211-227

    • DOI

      10.32908/hthp.v52.1365

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Deposition and Morphology Control of Carbon Film through Electrochemical Reduction of Carbonate Ions in Molten LiCl2023

    • Author(s)
      Zhuang Chongrui, Jin Weiliang, Xiao Jiusan, Lu Xin, Takeda Osamu, Zhu Hongmin
    • Journal Title

      Journal of The Electrochemical Society

      Volume: 170 Issue: 10 Pages: 102503-102503

    • DOI

      10.1149/1945-7111/acfe42

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Solubilities of RE2O3 in REF3-LiF (RE = Nd, Dy) at 1473 K2022

    • Author(s)
      Takeda Osamu、Nakano Kiyotaka、Kobayashi Fumiyoshi、Lu Xin、Sato Yuzuru、Zhu Hogmin
    • Journal Title

      Journal of Sustainable Metallurgy

      Volume: 8 Issue: 4 Pages: 1498-1508

    • DOI

      10.1007/s40831-022-00617-6

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Current Status on Resource and Production Technologies of Scandium2021

    • Author(s)
      TAKEDA Osamu、OKABE Toru H.
    • Journal Title

      Journal of MMIJ

      Volume: 137 Issue: 3 Pages: 36-44

    • DOI

      10.2473/journalofmmij.137.36

    • NAID

      130008006096

    • ISSN
      1881-6118, 1884-0450
    • Year and Date
      2021-03-31
    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Presentation] Fabrication of SiC oxidation-resistant film on carbon/carbon composite by electrochemical siliciding in molten salt2023

    • Author(s)
      Yuto Hirosawa, Osamu Takeda, Hongmin Zhu
    • Organizer
      2023 Joint Symposium on Molten Salts
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Formation of carbon film on Ni and Mo through electrochemical reduction of carbonate ions in molten LiCl2023

    • Author(s)
      Chongrui Zhuang, Xin Lu, Osamu Takeda, Hongmin Zhu
    • Organizer
      2023 Joint Symposium on Molten Salts
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 希土類金属の高温素材プロセスの歴史と展開2023

    • Author(s)
      竹田修,Xin Lu,朱鴻民
    • Organizer
      資源・素材学会2023年度春季大会(千葉)
    • Related Report
      2022 Annual Research Report
  • [Presentation] Viscosity measurement of high temperature melts in wide viscosity range2022

    • Author(s)
      Osamu Takeda, Xin Lu, Yuzuru Sato, Hognming Zhu
    • Organizer
      The 13th Asian Thermophysical Properties Conference (ATPC 2022)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Recent Trend on the Studies of Recycling Technologies of Rare Earth Metals2022

    • Author(s)
      Osamu Takeda, Xin Lu, and Hongmin Zhu
    • Organizer
      REWAS 2022, TMS 2022 Annual Meeting
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] YOClのカーボクロリネーションによる YCl3の合成2021

    • Author(s)
      竹田修,星政義,Xin Lu,朱鴻民
    • Organizer
      資源・素材学会2021年度秋季大会(札幌) <オンライン開催>
    • Related Report
      2021 Annual Research Report
  • [Book] Treatise on Process Metallurgy 2nd edition2024

    • Author(s)
      O. Takeda, T. Uda, T.H. Okabe
    • Total Pages
      928
    • Publisher
      Elsevier Inc.
    • ISBN
      9780323853736
    • Related Report
      2023 Annual Research Report
  • [Book] “Chapter 15 Resource and production technologies for scandium”, Routledge Handbook of the Extractive Industries and Sustainable Development2022

    • Author(s)
      Osamu Takeda, Toru H. Okabe
    • Total Pages
      704
    • Publisher
      Routledge
    • ISBN
      9780367429959
    • Related Report
      2022 Annual Research Report
  • [Book] 乾式プロセス2021

    • Author(s)
      竹田修
    • Total Pages
      268
    • Publisher
      内田老鶴圃
    • ISBN
      9784753655489
    • Related Report
      2021 Annual Research Report

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Published: 2021-04-28   Modified: 2025-01-30  

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