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于溪凤 , 程力智 , 胡火生 , 刘祥 , 胡壮麒
金属学报
应用电流体动力学技术，采用石英毛细管喷嘴，制备了Ｓｎ－Ｂｉ纳米超微粉，研究了工艺参数对纳米超微粉尺寸的影响．实验结果表明：随着直流高压的增加和毛细管直径的减小．Ｓｎ－Ｂｉ纳米超微粉的尺寸减小，输送熔体的压力对控制纳米超微粉的尺寸也是一个重要影响因素．
关键词: 电流体动力学技术 , nanometer powder , DC high voltage , capillary nozzle , Sn-Bi alloy
L.D. He , G.Y Zeng , X.Liu H.S. Hu , D.Song and L.Z.Cheng(Electron Microscope Laboratory Northeastern University Shenyang 110006 , ChinaManuscript received 20 July 1995 , in revised form 10 April 1996)
金属学报(英文版)
The analytical electron microscopy has been used to characterize the morphology,structure and composition of the nanostructured material of Sn- Bi alloy prepared by a modified electrohydrodynamic technique. The electron diffraction pattern and the corresponding contrast image for the discrete particles with a diameter smaller than 4 nm have been obtained.It is shown that the nanocrystalline Sn-Bi alloy particles comprise a single crystal of Bi-containing β-Sn solid solution or of Sn-containing Bi solid solution. A direct preparation procedure of the samples during the electrohydrodynamic rapid solidification process has been developed for electron microscopic observation.
关键词: :nanostructured material , null , null , null
