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Fabrication of nano-sized Si powders with a narrow size distribution by two-step milling

Published online by Cambridge University Press:  31 January 2011

Bong-Chull Kim ,
Hiroyuki Uono ,
Tooru Fuse ,
Tadashi Ishihara  and
Mamoru Senna
Bong-Chull Kim
Affiliation:
Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan, and Mitsubishi Chemical Corporation, MCC-Group, Science & Technology Research Center, 8-3-1, Chuo, Ami, Inashiki, Ibaraki 300-0332, Japan
Hiroyuki Uono
Affiliation:
Mitsubishi Chemical Corporation, MCC-Group, Science & Technology Research Center, 8-3-1, Chuo, Ami, Inashiki, Ibaraki 300-0332, Japan
Tooru Fuse
Affiliation:
Mitsubishi Chemical Corporation, MCC-Group, Science & Technology Research Center, 8-3-1, Chuo, Ami, Inashiki, Ibaraki 300-0332, Japan
Tadashi Ishihara
Affiliation:
Mitsubishi Chemical Corporation, MCC-Group, Science & Technology Research Center, 8-3-1, Chuo, Ami, Inashiki, Ibaraki 300-0332, Japan
Mamoru Senna*
Affiliation:
Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3–14–1 Hiyoshi, Kohoku-ku, Yokohama 223–8522, Japan
*
a)Address all correspondence to this author. e-mail: senna@applc.keio.ac.jp
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Abstract

By the combination of two successive dry milling processes (i.e., by using a multiring mill and subsequently a pin-type disintegrator), downsizing of Si powders was achieved to 30 nm crystallites and their aggregated mean volume diameter about 100 nm, with the top size less than 400 nm. Combination of the two dry milling processes proved to be effective to reduce the particle size and sharpen the size distribution of the aggregates without using any additives, tedious wet processes, or subsequent classification. Increase in the impurity due to milling was <0.1% for Fe and <0.4% for Zr, being well within a tolerable limit for most of the technological purposes.

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Type
Articles
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Journal of Materials Research , Volume 18 , Issue 6 , June 2003 , pp. 1368 - 1373
Copyright
Copyright © Materials Research Society 2003

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References

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