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Preparation of Nanocrystalline Copper and Copper Silicon Sulphide by Mechanochemical Route

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Abstract:

The composition and properties of powders prepared by high-energy milling of copper sulphides with silicon have been studied by methods of X-ray diffractometry and surface area measurement. The combination of several methods was utilized to develop a coherent picture of the process. The overall process of mechano-chemical transformations in copper sulphide-silicon system proceeds via complicated mechanism with several overlapping steps. Phase transformations in copper sulphide phases, the formation of elemetal nanocopper with X-ray determined particle size of 23 nm and creation of ternary sulphide Cu8SiS6 with anomalous surface area values are the main products of the mechanochemical reaction.

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Periodical:

Materials Science Forum (Volumes 480-481)

Pages:

453-456

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.480-481.453

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Online since:

March 2005

Authors:

Peter Baláz, E. Boldižárová, E. Godočíková

Keywords:

Copper (Cu), Copper Silicon Sulphide, Mechanochemistry, Milling, Nanocrystalline Material

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© 2005 Trans Tech Publications Ltd. All Rights Reserved

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