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Formation of metal microspheres by ultrasonic cavitation

Published online by Cambridge University Press:  31 January 2011

Hilla Friedman ,
Ze'ev Porat ,
Itzhak Halevy  and
Shimon Reich
Hilla Friedman
Affiliation:
Department of Materials and Interfaces, Weizmann Institute of Science, Rehovot 76100, Israel
Ze'ev Porat*
Affiliation:
Department of Analytical Chemistry, Nuclear Research Center-Negev, Be'er-Sheva 84190, Israel; and Department of Biomedical Engineering, Ben-Gurion University of the Negev, Be'er sheva 84105, Israel
Itzhak Halevy
Affiliation:
Department of Physics, Nuclear Research Center-Negev, Be'er-Sheva 84190, Israel
Shimon Reich*
Affiliation:
Department of Materials and Interfaces, Weizmann Institute of Science, Rehovot 76100, Israel
*
a)Address all correspondence to this author. e-mail: poratze@bgu.ac.il
b)Deceased.
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Abstract

A new physical method is described for the preparation of metal microspheres by ultrasonic cavitation of low-melting point metals (<380 °C) immersed in hot silicone oil. The ultrasonic radiation causes dispersion of the molten metals into spheres, which solidify rapidly on cooling. This method is illustrated for the synthesis of Pb and Au–Si eutectic alloy.

Keywords

AlloyAuMicrostructure
Type
Materials Communications
Information
Journal of Materials Research , Volume 25 , Issue 4 , April 2010 , pp. 633 - 636
Copyright
Copyright © Materials Research Society 2010

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References

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