节点文献
非晶晶化法制备Nd2（Fe,D y,Nb,Al）14B/Fe3B纳米晶合金及晶化过程研究
Nanocrystalline Nd2（Fe, Dy, Nb, Al）14B/Fe3B Two-Phase Permanent Magnetic Alloys by Crystallizing from Amorphous State
【Author】 Wu Ruiguo, Cui Chunxiang, Sunjibing, Yang Wei, Li Lin (School of Materials Science and Engineering , Hebei University of Technology, Tianjin 300130, China)
【机构】 河北工业大学材料学院；
【摘要】 采用快淬及退火工艺,通过非晶晶化法制备了Nd2(Fe,Dy,Nb,Al)14B/Fe3B纳米晶合金。通过高温X射线衍射、扫描电镜等技术研究了合金在不同温度下的非晶晶化过程。结果发现,添加Dy,Nb,Al的合金NdFeB,即Nd2(Fe,Dy,Nb,Al)14B,表现出很好的非晶形成能力,甩带速度为40m·s-1时可获得良好的非晶态组织,700℃晶化14min可获得平均晶粒约为25nm的晶态组织。
【Abstract】 Nanocrystalline Nd2(Fe, Dy, Nb, A1)14B/ Fe3B two phase magnets were fabricated out by crystallizing the amorphous melt-spun ribbons using melt spinning and annealing. The progress of crystallization from amorphous state at different temperatures were researched by means of X-ray diffraction and scanning electronic microscope (SEM). It is indicated by ex- periment that there is a good amorphous formation ability for NdFeB added Dy, Nb, Al, Nd2(Fe, Dy, Nb, Al)14B. The amorphous state is obtained at the rate of 40 m·s-1 on melt spinning. Crystalline grain of average diameter about 25 nm, is obtained by annealing at 70℃ for 14 min.
【Key words】 nanocrystalline two-phase magnet； amorphous state； crystalline state； crystallization from amorphous； rare earths；
- 【会议录名称】 2005年中国固体科学与新材料学术研讨会专辑
- 【会议名称】2005年中国固体科学与新材料学术研讨会
- 【会议时间】2005-03
- 【会议地点】中国广西北海
- 【分类号】TB383
- 【主办单位】中国稀土学会固体科学与新材料专业委员会