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Some Effects of Quench Rate on The Properties and Microstructures of Amorpous and Crystalline Materials Produced by Spark Erosion

Published online by Cambridge University Press:  26 February 2011

John L. Walter  and
Ami E. Berkowitz
John L. Walter
Affiliation:
General Electric Corporate Research and Development, PO Box 8, Schenectady, NY 12301.
Ami E. Berkowitz
Affiliation:
General Electric Corporate Research and Development, PO Box 8, Schenectady, NY 12301.
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Abstract

Spark erosion provides a means for producing fine particles (5 nm to 75 um) of metals, alloys, and semiconductors. Since the powders are formed from liquid droplets solidified in a liquid dielectric, the rate of solidification of the particles can be very high, varying according to particle size and the dielectric used. This paper examines some effects of different dielectrics on the microstructures, magnetic properties,and crystallization characteristics of amorphous and crystalline metals. It is seen that these properties depend upon the quench rate provided by the dielectric. In the case of the organic dielectrics, the quench rate appears to be associated with specific properties of the dielectric.

Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 80: Symposium G – Science and Technology of Rapidly Quenched Alloys , 1986 , 179
Copyright
Copyright © Materials Research Society 1987

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References

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