Preparation of Nanocomposite Magnets with High Coercivity and Heat Resistance

高矫顽力和耐热性纳米复合磁体的制备

• 批准号: 23656420
• 负责人: SUGIMOTO Satoshi
• 金额: $ 2.41万
• 依托单位: Tohoku University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Challenging Exploratory Research
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011 至 2013
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23656420/
• 关键词: 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

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.

本研究的目的是通过氢等离子体-金属反应法、熔盐氢还原和高能球磨法制备Fe-Co和Sm-Co纳米颗粒，以用于比Nd-Fe表现出更高磁性能的纳米复合磁体。 -B 磁铁。还研究了这些纳米颗粒的磁性。结果，氢等离子体-金属反应方法可以制备平均直径低于82 nm的Fe-Co纳米粒子。获得了220-232 Am2kg-1的饱和磁化强度，高于先前研究报告的值。采用氢等离子体-金属反应方法，获得了尺寸为48-63 nm的Sm-Co纳米粒子。纳米粒子的矫顽力为0.65-1.03 MAm-1，是粒径82 nm以下的Sm-Co粒子中最高的值。

项目成果

水素プラズマ-金属反応法を用いたSm-Co ナノ粒子の作製

氢等离子体-金属反应法制备Sm-Co纳米颗粒

• 发表时间: 2013
• 作者: 松浦 昌志;大井 洋介;磯谷 桂太;手束展規;杉本 諭
• 通讯作者: 杉本 諭

水素プラズマ-金属反応法を用いたSm-Coナノ粒子の作製

氢等离子体-金属反应法制备Sm-Co纳米颗粒

• 发表时间: 2013
• 作者: 松浦 昌志;大井 洋介;磯谷 桂太;手束 展規;杉本 諭
• 通讯作者: 杉本 諭