摘要
提供了一种以工业纯混合稀土为原料制备的稀土铁硼材料及其制备方法和应用,所述原料包括Pr-Nd混合稀土和La-Ce混合稀土,该材料具有Nd_2Fe_(14)B型结构,化学式:[(La-Ce)_x(Pr-Nd)_(1-x)]_y(Fe,TM)_(1-y-z)B_z,其中,x=1%～99%(原子分数),y=12%～17%(原子分数),z=5%～8.5%(原子分数)。该发明母合金原料配方同时采用工业纯La-Ce和Pr-Nd两种混合稀土,但不影响2:14:1永磁主相的生成,以及磁性单相行为的出现,保持了稀土铁硼永磁材料的优良磁性能,减小了对高纯单质稀土原料的依赖性,降低了材料的制备成本,对于开发低成本的稀土永磁材料并拓展其应用具有重要的实际意义。研究获得的新型钕铁硼永磁材料的剩余磁化强度可达0.55～1.07T,内禀矫顽力可达819.9～1440.8kA/m,最大磁能积可达43.0～125.0kJ/m^3。
rare earth iron boron material prepared with industrial pure rare earth as raw material and its preparation method and application were provided.The raw material includes Pr-Nd mixed rare earth and La-Ce mixed rare earth.The material has a Nd2Fe14B type structure,a chemical formula:[(La-Ce)x(Pr-Nd)1-x]y(Fe,TM)1-y-zBz,wherein x=1%-99%(atom fraction),y=12%-17%(atom fraction),z=5%-8.5%(atom fraction).The mother alloy material of the invention also uses two kinds of mixed rare earth of industrial pure La-Ce and Pr-Nd,but does not affect the generation of the primary phase of the 2∶14∶1permanent magnet and the appearance of the magnetic single-phase behavior.It keeps the excellent magnetic properties of the rare earth iron and boron permanent magnetic material,reduces the dependence on the raw material of the high purity mono rare earth,and reduces the preparation cost of the material.It has important practical significance for developing low cost rare earth permanent magnet materials and expanding their applications.According to the rare earth iron and boron material provided by the invention,the intrinsic coercive force of the rare earth iron and boron material can reach 819.9-1 440.8kA/m,the residual magnetization of the material can reach 0.55-1.07T,and the maximum magnetic energy product can reach 43.0-125.0kJ/m3 or even higher。
作者
刘荣明
耿赵文
贾立颖
朱代漫
周小文
王倩
胡国辉
熊君
刘冬
李炳山
沈保根
LIU Rong-ming;GENG Zhao-wen;JIA Li-ying;ZHU Dai-man;ZHOU Xiao-wen;WANG Qian;HU Guo-hui,XIONG Jun;LIU Dong;LI Bing-shan;SHEN Bao-gen(State Key Laboratory of Magnetics,Institute of Physics,CAS,Beijing 100190,China;National Engineering Research Center for Magnetic Materials,Beijing 102600,China;BGRIMM Magnetic Materials&Technology(Fuyang)Co.Ltd.,Fuyang 236000,Anhui,China)
出处
《金属功能材料》
CAS
2019年第2期1-5,共5页
Metallic Functional Materials
基金
国家自然科学基金项目资助(51401023)
北京市丰台区科技三项费项目资助(KSF201709)
北京市丰台区科技新星计划项目资助
北京矿冶科技集团有限公司青年创新基金项目资助(QC-1724)
北京矿冶科技集团有限公司重大科研基金项目资助(JTKJ1806)
关键词
混合稀土
钕铁硼
熔体快淬
电弧熔炼
磁性能
mixed rare earth
Nd-Fe-B
melt spun
arc melting
magnetic properties
