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Preparation of Nanocomposite Magnets with High Coercivity and Heat Resistance

Research Project

Project/Area Number 23656420
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeMulti-year Fund
Research Field Structural/Functional materials
Research InstitutionTohoku University

Principal Investigator

SUGIMOTO Satoshi  東北大学, 工学(系)研究科(研究院), 教授 (10171175)

Project Period (FY) 2011 – 2013
Project Status Completed (Fiscal Year 2013)
Budget Amount *help
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2013: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2012: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2011: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Keywordsナノ粒子 / 鉄ーコバルト / サマリウムコバルト / ナノコンポジット磁石 / 水素プラズマ金属反応法 / 水素還元 / 溶融塩 / 高速ボールミル / 鉄-コバルト / 保磁力 / 水素アークプラズマ反応法 / 耐熱性 / ナノ結晶フレーク / ナノコンポジット / 高エネルギーボールミル / 界面活性剤
Research Abstract

The purpose of this study was the preparation of Fe-Co and Sm-Co nanoparticles by hydrogen plasma-metal reaction method, hydrogen reduction of molten salt and high energy ball milling for the use of nanocomposite magnets which show higher magnetic properties than Nd-Fe-B magnets. The magnetic properties of these nanoparicles are also investigated. As a result, the hydrogen plasma-metal reaction method could fabricate Fe-Co nanoparticles with an average diameter below 82 nm. The saturation magnetization of 220-232 Am2kg-1 were obtained, which was higher than the values reported in previous studies. By using hydrogen plasma-metal reaction method, Sm-Co nanoparticles with the size of 48-63 nm were obtained. The nanoparticles showed coercivities of 0.65-1.03 MAm-1, which is the highest value among Sm-Co particles with the particle size of below 82 nm.

Report

(4 results)
  • 2013 Annual Research Report   Final Research Report ( PDF )
  • 2012 Research-status Report
  • 2011 Research-status Report
  • Research Products

    (2 results)

All 2013

All Presentation (2 results)

  • [Presentation] 水素プラズマ-金属反応法を用いたSm-Co ナノ粒子の作製2013

    • Author(s)
      松浦 昌志, 大井 洋介, 磯谷 桂太, 手束展規, 杉本 諭
    • Organizer
      日本金属学会2013年秋期大会
    • Place of Presentation
      金沢大学
    • Year and Date
      2013-10-17
    • Related Report
      2013 Final Research Report
  • [Presentation] 水素プラズマ-金属反応法を用いたSm-Coナノ粒子の作製2013

    • Author(s)
      松浦 昌志、大井 洋介、磯谷 桂太、手束 展規、杉本 諭
    • Organizer
      日本金属学会2013年秋期大会
    • Place of Presentation
      金沢大学
    • Related Report
      2013 Annual Research Report

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Published: 2011-08-05   Modified: 2019-07-29  

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