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Production of titanium thin film through the reaction at the interface between molten salt and liquid rare earth metal

Research Project

Project/Area Number 19K05105
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 26060:Metals production and resources production-related
Research InstitutionIwate University

Principal Investigator

Hidehiro SEKIMOTO  岩手大学, 理工学部, 助教 (50613519)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2021: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2020: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2019: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Keywordsチタン / 薄膜 / 溶融塩 / 界面反応 / 偏析 / 溶融塩電解
Outline of Research at the Start

鋼材の耐食性向上のため、チタン薄板による被覆がしばしば行われる。しかし、チタンは高価な材料と認識されており、普及のためにさらなる低コスト化が求められている。チタン薄板製造コストの約5割は加工コストである。本研究では、溶融塩と液体希土類金属との界面での反応を活用して、チタンの薄膜や薄板を製造する全く新しいプロセスの開発を目指し、基礎研究を実施する。

Outline of Final Research Achievements

Fundamental study on the molten salt electrolysis using liquid rare earth metal cathode was investigated to develop a new process for production of titanium foil, where the starting feedstocks were titanium oxide. The experimental results indicated that the solubility of titanium oxide in a fluoride molten salt containing CeF3 was negligible. Consequently, the feasibility of the molten salt electrolysis initially aimed was difficult. On the other hand, the new process for fabricating titanium foil based on the interface reaction of liquid cerium and molten salt to form Ce-Ti alloy and subsequent cooling to segregation of Ti from Ce-Ti alloy was demonstrated. This finding has a potential to develop a cost affordable process to produce titanium foils and titanium sheets.

Academic Significance and Societal Importance of the Research Achievements

チタンおよびチタン合金は、軽量・高強度で耐食性にも優れる魅力的な金属ですが、鉱石から金属を抽出する工程や、溶解、加工が難しいため、鉄やアルミニウムと比較して高価な金属となり、使用に制限があります。本研究では、界面反応と偏析というこれまでにない原理によってチタン薄膜が得られることを実証しました。本成果は、より低コストなチタン薄板の生産プロセスの開発に繋がる可能性を秘めています。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (3 results)

All 2021

All Journal Article (1 results) (of which Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (2 results)

  • [Journal Article] Titanium Film Formation at the Interface Between Liquid Rare-Earth Metal and Molten Salt2021

    • Author(s)
      Hidehiro Sekimoto, and Kenta Sato
    • Journal Title

      Metallurgical and Materials Transactions B

      Volume: 52 Issue: 5 Pages: 2842-2846

    • DOI

      10.1007/s11663-021-02293-5

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] 液体希土類金属と溶融塩との界面における反応を用いたチタン薄膜の作製2021

    • Author(s)
      佐藤建汰
    • Organizer
      第13回資源・素材学会東北支部若手の会
    • Related Report
      2021 Annual Research Report 2020 Research-status Report
  • [Presentation] LiF系溶融塩と液体Ceの界面におけるチタン薄膜の生成2021

    • Author(s)
      関本英弘、佐藤建汰
    • Organizer
      第53回溶融塩化学討論会
    • Related Report
      2021 Annual Research Report

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Published: 2019-04-18   Modified: 2023-01-30  

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