典型文献
Spherical modification of tungsten powder by particle composite system
文献摘要：
Owing to contradiction between increasing demand of spherical tungsten powder and limitation of traditional manufacturing technology,a novel preparation method was developed to sphericize the polygonal tungsten powder by means of modification of particle composite system.Tungsten powder particles were modified by par-ticle composite system,and detailed characterization by scanning electron microscopy(SEM)was studied.Particle size distribution and function mechanism were analyzed,and the internal relationship between average diameter and processing time was discussed.The results show that the spherical tungsten powder with an average diameter of 6.41 μm is obtained from polyhedral tungsten powder with an average diameter of 7.50 μm.The spherical effect could be achieved(sharp edge angles of particles are rounded off and reshaped)when the processing time is over 30 min.The relationship between average diameter(d)and pro-cessing time can be described by the exponential decay model,which provides a good interpretation for the process of modification.The relationship between them can be expressed by the equation d=1.87406exp(-x/8.92718)+6.4182.The proposed method could readily enable large-scale production of spherical tungsten powder.
文献关键词：
中图分类号：
作者姓名：
Cong-Cong Wang;Cheng-Chang Jia;Peng Gao;Guo-Sheng Gai;Yu-Fen Yang
作者机构：
School of Materials Science and Engineering,University of Science and Technology Beijing,Beijing 100083,China;Powder Technology R&D Group,Department of Material Science and Engineering,Tsinghua University,Beijing 100084,China
文献出处：
引用格式：
[1]Cong-Cong Wang;Cheng-Chang Jia;Peng Gao;Guo-Sheng Gai;Yu-Fen Yang-.Spherical modification of tungsten powder by particle composite system)[J].稀有金属（英文版）,2022(06):1972-1976
A类：
sphericize,87406exp
B类：
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AB值：
0.50864
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