Field-assisted sintering of Ni nanopowders

V.Y. Kodash, J.R. Groza, K.C. Cho, B.R. Klotz and R.J. Dowding

Institute of Transportation Studies, Working Paper Series from Institute of Transportation Studies, UC Davis

Abstract: Ni nanopowders were sintered by a field-assisted sintering technique (FAST). The influence of heating rate from 90 to 1100 ◦C/min on densification and final grain structure of sintered Ni was studied. A moderate heating rate was found to be beneficial for the densification of Ni nanopowders, whereas a high heating rate was conducive to a lower final density. Very high heating rates resulted in non-uniform densification of the samples and formation of cracks during sintering. Electric field activation and possible densification mechanisms are discussed.

Keywords: Engineering; UCD-ITS-RP-07-28 (search for similar items in EconPapers)
Date: 2007-11-01
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