Synthesis and Application of High-coercive Magnetic Powders in Rare Earth Intermetallic Compound Systems

稀土金属间化合物体系高矫顽磁粉的合成及应用

• 批准号: 07555271
• 负责人: MACHIDA Ken-ichi
• 金额: $ 4.22万
• 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: 1995
• 资助国家: 日本
• 起止时间: 1995 至 1996
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07555271/
• 关键词: Rare Earth Intermetallic Compounds; Interstitial Metal Nitrides; Permanent Magnets; Bonded Magnets; Coercivity; Remanence; Maximum Energy Product; Photochemical Vapor Deposition

Rare earth intermetallic compounds, Sm_2Fe_<17> (C,N) _x and Nd (Fe, M) _<12> (C,N) _x, were prepared by conventional melting method and were finely and uniformly ground up to a particle size below 3 mum by ball-milling in a hexane solution containing a surface active agent. Furthermore, the surface of Sm_2Fe_<17>N_x powders was coated and stabilized by the zinc metal produced from Zn (C_2H_5) _2 according to photochemical vapor deposition process. The resulting Zn/Sm_2Fe_<17>N_x powders showed high coercivity and remanence values to provide a big maximum energy product around 320 kJm^<-3>. It was demonstrated that the epoxy resin-bonded magnets produced from the Zn/Sm_2Fe_<17>N_x composite powders possessed high-performance permanent magnetic characteristics : (BH) max = -176kJm^<-3> and good resistivity for oxidation. Also, these magnets showed the less irreversible flux loss in magnetization even than the Sm_2 (Fe, Co) _<17>N_x ones, of which the stability was much improved by Co addition,

稀土金属间化合物，SM_2FE_ <17>（C，N）_x和Nd（Fe，M）_ <12>（C，N）_x通过常规熔化方法制备，并通过在包含表面活性剂的甲烷溶液中的球固定在3个妈妈以下的粒径和粒度均匀地接地，并均匀地接地至3个妈妈。此外，根据光化学蒸气沉积过程，SM_2FE_ <17> N_X粉末的表面被Zn（C_2H_5）_2产生的锌金属涂覆并稳定。由此产生的Zn/SM_2FE_ <17> N_X粉末显示出较高的强直性和re远程值，可在320 kjm^<-3>附近提供最大的最大能量产品。事实证明，由Zn/sm_2fe_ <17> N_x复合粉末产生的环氧树脂键入的磁铁具有高性能的永久性磁性：（ BH）Max = -176KJM^<-3>和氧化良好的电阻率。同样，这些磁铁在磁化强度中的不可逆通量损失甚至比SM_2（Fe，Co）_ <17> N_x的磁力损失较小，其中稳定性通过CO添加而大大提高，

项目成果

Ken-ichi Machida: "Rare-Earth Magnets and Their Applications, " ed.by F.P.Missell, V.Villas-Boas, H.R.Rechenberg, and F.J.G.Landgraf, "High-performance Characteristics of the Bonded Magnets Produced from the Sm_2Fe_<17>N_x Powder Stabilized by Photo-induc

Ken-ichi Machida：“稀土磁体及其应用”，F.P.Missell、V.Villas-Boas、H.R.Rechenberg 和 F.J.G.Landgraf 编辑，“由 Sm_2Fe_ 生产的粘结磁体的高性能特性<17>

Hirokazu Izumi: "High-Performance Characteristics of Bonded Magnets Produced Using Sm_2Fe_<17>N_x Powder Stabilized by Photoinduced Zinc Metal Coating" Japanese Journal of Applied Physics. 35. L894-L896 (1996)

Hirokazu Izumi：“使用光致锌金属涂层稳定的 Sm_2Fe_<17>N_x 粉末生产的粘结磁体的高性能特性”日本应用物理学杂志。

Hirokazu Izumi: "Crystal Structures and Magnetic Properties of Na(Fe,M)_<12>Cx and Na(Fe,M)_<12>CxNy(M=Mo,Ti,V)Prepared by Cast Method" Journal of Alloys and Compounds. 233. 231-235 (1996)

Hirokazu Izumi：“铸造法制备的Na(Fe,M)_<12>Cx和Na(Fe,M)_<12>CxNy(M=Mo,Ti,V)的晶体结构和磁性”合金杂志

Ken-ichi Machida: "Effective Grinding Procedure for Sm_2Fe_<17>N_x Powder with High-Performance Permanent Magnetic Characteristics" Jpn.J.Appl.Phys.34. L741-L743 (1995)

Ken-ichi Machida：“具有高性能永磁特性的 Sm_2Fe_<17>N_x 粉末的有效研磨程序”Jpn.J.Appl.Phys.34。