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Experimental Study and Percolation Model of Compactified Metallic Mixtures Sintering by Electrical Discharge

Published online by Cambridge University Press:  28 February 2011

A.B. Pakhomov ,
B.P. Peregood ,
A.K. Sarychev  and
A.P. Vinogradov
A.B. Pakhomov
Affiliation:
A.F.Ioffe Physical Technical Institute, USSR Academy of Sciences, Polytechnicheskaya 26, Leningrad,194021,USSR
B.P. Peregood
Affiliation:
A.F.Ioffe Physical Technical Institute, USSR Academy of Sciences, Polytechnicheskaya 26, Leningrad,194021,USSR
A.K. Sarychev
Affiliation:
Institute of High Temperatures,USSR Academy of Science,Izhorskaya 13/19, Moscow,127412, USSR
A.P. Vinogradov
Affiliation:
Institute of High Temperatures,USSR Academy of Science,Izhorskaya 13/19, Moscow,127412, USSR
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Abstract

Different ways of pulsed current use for compaction of conducting materials have been studied during recent years, mainly in connection with technological problems of powder metallurgy. As a rule, the current is driven through a blank placed in a mould under external pressure [1-6]. Pulsed current action on a blank may lead to either partial or complete melting of granules [1,2], to the heating of granules and their plasticity increase [3], to the destruction of oxide films and granules surface activation [4,5] and to the break-down and sintering of chains forming channels in the direction of current [6].

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 195: Symposium S – Physical Phenomena in Granular Materials , 1990 , 217
Copyright
Copyright © Materials Research Society 1990

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References

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