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材料工程  2014, Vol. 0 Issue (10): 6-10    DOI: 10.11868/j.issn.1001-4381.2014.10.002
  材料与工艺 本期目录 | 过刊浏览 | 高级检索 |
Fe-Nd-B-Zr块体非晶合金的形成能力和磁性能
刘繁茂, 张慧燕, 张涛
北京航空航天大学 材料科学与工程学院, 北京 100191
Glass Forming Ability and Magnetic Properties of Fe-Nd-B-Zr Bulk Metallic Glasses
LIU Fan-mao, ZHANG Hui-yan, ZHANG Tao
School of Materials Science and Engineering, Beihang University, Beijing 100191, China
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摘要 以Fe-Nd-B系块体非晶合金为前驱体制备永磁材料。在Fe70Nd10B20三元合金及其邻近成分点中微量添加Zr元素,采用熔体旋淬法和铜模喷注法制备样品,通过XRD和DSC表征非晶形成能力。对Fe70Nd9B20Zr1块体非晶合金进行退火晶化处理,采用XRD分析晶化产物,通过VSM表征不同晶化阶段的磁性能。结果表明,合金体系的非晶形成能力得到提高,在Zr原子分数为1%时获得临界尺寸为2 mm的块体非晶合金;Fe70Nd9B20Zr1块体非晶合金在946 K,600 s退火时得到最佳硬磁性能,剩磁(Br)、内禀矫顽力(iHc)和最大磁能积(BH)max分别为0.54 T,348 kA/m和24.1 kJ/m3。该合金体系可应用于直接通过铸造和热处理工艺制备块体纳米复合永磁材料。
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刘繁茂
张慧燕
张涛
关键词 铁基块体非晶合金非晶形成能力纳米复合永磁材料硬磁性能    
Abstract:Permanent magnets with Fe-Nd-B bulk metallic glasses as precursors was fabricated. Trace zirconium was added into Fe70Nd10B20 ternary alloy and its adjacent composition. The samples were prepared by spin quenching and copper mold casting,and the glass forming ability was characterized by XRD and DSC. Then the Fe70Nd9B20Zr1 bulk metallic glasses were crystallized by annealing treatment. The crystallization phases were analyzed by XRD and the magnetic properties in various crystallization stages were characterized by VSM. The results show that the glass forming ability of the alloys is enhanced,and Fe-Nd-B-Zr bulk metallic glasses with critical diameter of 2 mm are obtained in alloys containing 1% atom fraction Zr. The optimum hard magnetic properties of Fe70Nd9B20Zr1 bulk metallic glasses can be achieved after annealing at 946 K for 600 s.The remanence (Br),coercive field (iHc) and maximum energy product (BH)max are 0.54 T,348 kA/m and 24.1 kJ/m3,respectively.This alloy system can be applied to directly synthesize nanocomposite permanent magnets by the process of casting and subsequent crystallization.
Key wordsFe-based bulk metallic glass    glass forming ability    nanocomposite permanent magnet    hard magnetic property
收稿日期: 2013-12-05     
1:  TG139.8  
通讯作者: 张涛(1964-), 男, 教授, 博士生导师, E-mail: zhangtao@buaa.edu.cn     E-mail: zhangtao@buaa.edu.cn
引用本文:   
刘繁茂, 张慧燕, 张涛. Fe-Nd-B-Zr块体非晶合金的形成能力和磁性能[J]. 材料工程, 2014, 0(10): 6-10.
LIU Fan-mao, ZHANG Hui-yan, ZHANG Tao. Glass Forming Ability and Magnetic Properties of Fe-Nd-B-Zr Bulk Metallic Glasses. Journal of Materials Engineering, 2014, 0(10): 6-10.
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http://jme.biam.ac.cn/jme/CN/10.11868/j.issn.1001-4381.2014.10.002      或      http://jme.biam.ac.cn/jme/CN/Y2014/V0/I10/6
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