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Nanophase Ni particles produced by a blown arc method

Published online by Cambridge University Press:  03 March 2011

M.H. Teng ,
J.J. Host ,
J.-H. Hwang ,
B.R. Elliott ,
J.R. Weertman ,
T.O. Mason ,
V.P. Dravid  and
D.L. Johnson
M.H. Teng
Affiliation:
Department of Materials Science and Engineering, Northwestern University, 2225 North Campus Drive, Evanston, Illinois 60208–3108
J.J. Host
Affiliation:
Department of Materials Science and Engineering, Northwestern University, 2225 North Campus Drive, Evanston, Illinois 60208–3108
J.-H. Hwang
Affiliation:
Department of Materials Science and Engineering, Northwestern University, 2225 North Campus Drive, Evanston, Illinois 60208–3108
J.R. Weertman
Affiliation:
Department of Materials Science and Engineering, Northwestern University, 2225 North Campus Drive, Evanston, Illinois 60208–3108
T.O. Mason
Affiliation:
Department of Materials Science and Engineering, Northwestern University, 2225 North Campus Drive, Evanston, Illinois 60208–3108
V.P. Dravid
Affiliation:
Department of Materials Science and Engineering, Northwestern University, 2225 North Campus Drive, Evanston, Illinois 60208–3108
D.L. Johnson
Affiliation:
Department of Materials Science and Engineering, Northwestern University, 2225 North Campus Drive, Evanston, Illinois 60208–3108

Abstract

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Nanophase Ni particles (<10 nm in diameter) were produced by a blown arc method. A helium gas stream directed at the arc reduces the Ni vapor concentration and increases the quench rate. The helium gas velocity is the predominant factor influencing the size of the Ni particles. Gas velocities of 20 m/s and 56 m/s (at 26.6 kPa total helium pressure) resulted in Ni particle sizes of 13 nm and 7 nm, respectively.

Type
Rapid Communication
Information
Journal of Materials Research , Volume 10 , Issue 2 , February 1995 , pp. 233 - 236
Copyright
Copyright © Materials Research Society 1995

References

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