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[1] Li Fan, Huang Haibo, Wu Bingyao,. Experimental study of amorphous andnanocrystalline Fe-based alloy [J]. Journal of Southeast University (English Edition), 2004, 20 (2): 209-211. [doi:10.3969/j.issn.1003-7985.2004.02.017]
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Experimental study of amorphous andnanocrystalline Fe-based alloy()
非晶、纳米晶铁基合金的实验研究
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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:
20
Issue:
2004 2
Page:
209-211
Research Field:
Materials Sciences and Engineering
Publishing date:
2004-06-30

Info

Title:
Experimental study of amorphous andnanocrystalline Fe-based alloy
非晶、纳米晶铁基合金的实验研究
Author(s):
Li Fan;  Huang Haibo;  Wu Bingyao
Department of Materials Science and Engineering, Southeast University, Nanjing 210096, China
李凡;  黄海波;  吴炳尧
东南大学材料科学与工程系, 南京 210096
Keywords:
nanocrystalline;  mechanical alloying;  FeNiPB(Cu;  Nb)alloy
纳米晶;  机械合金化;  FeNiPB(Cu;  Nb)合金
PACS:
TG132.2+71;TG139+.8
DOI:
10.3969/j.issn.1003-7985.2004.02.017
Abstract:
The mechanical alloying of FeNiPB(Cu, Nb)mixed powders was studied by X-ray diffraction(XRD), transition electron microscope(TEM), scanning electron microscopy(SEM)and extended X-ray absorption fine structure(EXAFS). The results show that the FeNiPB(Cu, Nb)mixed powders alloy after milling for 20 h, as the milling time increases to 80 h, Fe and Ni atoms are in an amorphous environment, the morphology of FeNiPB(Cu, Nb)mixed powders appears as cotton fiber and its electron diffraction pattern shows a typically diffuse amorphous halo. So FeNiPB(Cu, Nb)mixed powders transform to amorphous state under this condition. After the FeNiPB(Cu, Nb)amorphous alloy was heated at 520 ℃ for 1 h, the nanocrystalline FeNiPB(Cu, Nb)was produced. So, the Fe-based nanocrystalline alloy can be prepared by partially crystallizing the FeNiPB(Cu, Nb)amorphous alloy.
用X射线衍射分析仪(XRD), 透射电子显微镜(TEM), 扫描电子显微镜(SEM)和X射线吸收精细结构分析仪(EXAFS)对机械合金化后的FeNiPB(Cu, Nb)混合粉末进行了分析研究. 研究结果表明: FeNiPB(Cu, Nb)混合粉末球磨20 h后合金化, 球磨80 h后FeNiPB(Cu, Nb)混合粉末中的Fe, Ni原子处于非晶环境中, 粉末的形态为棉絮状, 电子衍射为典型的非晶环. XRD, EXAFS, TEM的分析结果表明在该条件下, FeNiPB(Cu, Nb)混合粉末完全转变成了非晶. FeNiPB(Cu, Nb)非晶合金在520 ℃加热1 h后产生纳米晶, 所以纳米晶铁基合金可通过FeNiPB(Cu, Nb)非晶合金部分晶化获得.

References:

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[2] Passamani E C, Tagarro J R B, Nunes E, et al. Magnetic and magnetotransport properties of nanocrystalline(Fe2B)0. 20X0. 80(X=Ag or Cu)alloys prepared by mechanical alloying [J]. Journal of Magnetism and Magnetic Materials, 2002, 247(2): 191-199.
[3] Manivel R M, Chattopadhyay K, Majumdar B, et al. Structure and soft magnetic properties of finement alloys [J]. Journal of Alloys and Compounds , 2000, 297(1, 2): 199-205.
[4] Kolano A, Mateja-Kaczmarsk K. The influence of post-annealing cooling rates on magnetic properties of Fe-based nanocrystalline alloy [J]. Journal of Magnetism and Magnetic Materials, 2003, 254, 255(1): 431-433.
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Memo

Memo:
Biography: Li Fan(1958—), female, associate professor, sem@seu.edu.cn.
Last Update: 2004-06-20