DEVELOPMENT OF HIGH-PERFORMANCE RARE EARTH BONDED MAGNETS

高性能稀土粘结磁体的开发

• 批准号: 10555218
• 负责人: MACHIDA Ken-ichi
• 金额: $ 6.08万
• 依托单位: Osaka University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1998
• 资助国家: 日本
• 起止时间: 1998 至 1999
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-10555218/
• 关键词: Rare earth compounds; Interstitial metal nitrides; Permanet magnets; Bonded magnets; Coercivity; Remanence; Surface coating; Maximum energy product; 温感磁場中プレス

In the present work, the purpose was to prepare fine magnetic powders of SmィイD22ィエD2FeィイD217ィエD2NィイD2xィエD2-related compounds with good oxidation-resistance as well as excellent magnetic properties and to evaluate the possibility of their practical uses as the raw materials for high-performance anisotropic bonded magnets.First, it was found that SmィイD22ィエD2 (Fe, Co)ィイD217ィエD2NィイD2xィエD2 possesses more excellent intrinsic magnetic property and oxidation-resistance than those of SmィイD22ィエD2FeィイD217ィエD2NィイD2xィエD2. As a result of these properties, high energy product values of (BH)ィイD2maxィエD2>340 kJ/mィイD13ィエD1 were observed on Zn/SmィイD22ィエD2 (Fe, Co)ィイD217ィエD2NィイD2xィエD2 powders as prepared surface-coating with the zinc metal produced via the photo-decomposition of diethyl zinc. Furthermore, the bonded magnets molded from those powders also provided high (BH)ィイD2maxィエD2 values up to 186 kJ/mィイD13ィエD1, and their thermal stability was better than that of the cobalt-free SmィイD22ィエD2FeィイD217ィエD2NィイD2xィエD2-related compounds, together with the oxidation-resistance.On the other hand, metal-bonded magnets were prepared from the SmィイD22ィエD2FeィイD217ィエD2NィイD2xィエD2-related compound powders using In metal or Sn-Zn eutectic alloy as a binder under warm pressing condition. The (BH)ィイD2maxィエD2 values recorded were around 150 kJ/mィイD13ィエD1, which were the highest ones among the figures reported on the similar rare earth metal-bonded magnets. Since the metal binders produced the inter-grain structure between the magnetic powder particles and protected them from water and oxygen in atmosphere, the metal-bonded magnets of SmィイD22ィエD2FeィイD217ィエD2NィイD2xィエD2-related compounds provided excellent oxidation and thermal stability.In addition, new surface-coating method was employed in this work to develop the magnetic ptoperty of the SmィイD22ィエD2FeィイD217ィエD2NィイD2xィエD2-related bonded magnets. This sorption method allowed us to mass-produce the surface-coated magnetic powders.

在目前的工作中，目的是准备SMY D22FE D22FE D217 D2NII D2XD2与具有良好氧化耐药性和出色磁性的化合物的精细磁粉，并评估其实际用途的可能性，并评估其作为高绩效的Anisotropic键合的原材料的原始材料。与微笑D22 FEI D217 D2NI D2X D2相比，D2XD2具有更出色的内在磁性和抗氧化性能。由于这些特性，在Zn/Smile D22（FE，CO）D217 D2NI D2X D2 D2 D2粉末上观察到（BH）D2MAX D2> 340 KJ/MY D13 D1的高能量产物值，作为用二乙基二乙基二乙基二乙基二乙基的光分泌产生的锌金属制成的表面涂层制备。此外，从这些粉末塑造的粘合磁体还提供了高（BH）D2Maxie D2值至186 kJ/my d13d1，并且它们的热稳定性比无钴的SMY D22D2FFEII D2217D22NII D22NII D2XD22222222222222222222222222222222222222-REAGENTS与氧化剂的组合组合在一起，并将其组合在一起，并将其组合在一起。从SMY D22D2FEII D217D2NII D2XD2与金属或SN-ZN共晶合金合金中使用的粘合剂在温暖的压迫条件下用作粘合剂。记录的（BH）D2Maxie D2值约为150 kJ/my d13 d1，这是在类似的稀土金属键磁体上报道的数字中最高的。由于金属粘合剂在磁粉颗粒之间产生了晶粒间结构，并保护了它们免受大气中的水和氧气的影响，因此SMY D22E D2FE D2FE D2FE D2NE D2NE D2NE D2NE D2NE D2NE D2相关化合物的金属键键提供了出色的氧化和热稳定性。 D217E D2NE D2XE D2与D2相关的键合磁铁。这种吸附方法使我们能够大量生产表面涂层的磁粉。

项目成果

Richard Arlot: "Magnetic Properties of Zinc-coated Sm_2(Fe_<0.9>Co_<0.1>)_<17>N_X Powders"Journal of Alloys and Compounds. 275-277. 620-624 (1998)

Richard Arlot：“镀锌Sm_2(Fe_<0.9>Co_<0.1>)_<17>N_X粉末的磁性”合金与化合物杂志。

Kenji Noguchi: "Magnetic Property and Stability of Zn/Sm_2Fe_<17>N_X Bonded Magnets using the In Metal derived from In(C_2H_5)_3 as a Binder"Chemsitry of Materials. 11. 2527-2532 (1999)

Kenji Noguchi：“使用衍生自In(C_2H_5)_3的In金属作为粘合剂的Zn/Sm_2Fe_<17>N_X粘结磁体的磁性和稳定性”材料化学。

K. Machida, K. Noguchi, M. Nishimura, and G. Adachi: "High-Performance Alloyed In Metal-Bonded Magnets Produced from Zn/Sm_2Fe_<17>N_X Powders"Journal of Applied Physics. (印刷中). (2000)

K. Machida、K. Noguchi、M. Nishimura 和 G. Adachi：“由 Zn/Sm_2Fe_17N_X 粉末生产的高性能合金”应用物理学杂志（2000 年出版）。 ）

.R. Arlot, K. Machida, P. De Rango, D. Fruchart, and G. Adachi: "Magnetic Properties of Zinc-coated SmィイD22ィエD2(FeィイD20.9ィエD2CoィイD20.1ィエD2)ィイD217ィエD2NィイD2xィエD2Powders"J. Alloys Comp.. 275-277. 620-624 (1998)

.R. Arlot、K. Machida、P. De Rango、D. Fruchart 和 G. Adachi：“镀锌 SmiD22D2(FeD20.9D2CoD20) .1 D2) D217 D2N D2x D2 合金的磁性”J。 275-277。620-624（1998）

K. Noguchi, M. Nishimura, K. Machida, and G. Adachi: "Magnetic Property and Stability of Zn/SmィイD22ィエD2FeィイD217ィエD2NィイD2xィエD2bonded Magnets using the In metal derived from In(CィイD22ィエD2HィイD25ィエD2)ィイD23ィエD2 as a Binder"Chem. Mater.. 11. 2527-2532 (1999)

K. Noguchi、M. Nishimura、K. Machida 和 G. Adachi：“使用源自 In(CiD22D2HD25D2)D23D2 的 In 金属作为粘合剂的 Zn/SmiD22D2FeD217D2ND2xD2 粘结磁体的磁性和稳定性”材料.. 11. 2527 -2532 (1999)