Paper Title:
Synthesis and Consolidation of Nano-Sized NiCo Powder by Powder Technology Rout
  Abstract

Nano sized Co-20wt%Ni composite powder was synthesized by electroless chemical reduction method using metallic salt precursors and hypophosphite as a reducing agent in alkaline tartarate bath as a complexing agent. The synthesized powder provide better sinterability, mechanical, electrical and magnetic properties with homogeneous microstructure. The nano-sized powder could be obtained, which have the average particle size of 40 nm, with a saturation magnetization (Bs ) of 97.95 which was increased by heat treatments of powder in hydrogen to 127 emu/g due to the exclusion of the precipitated phosphrous in the composite powder. The powder underwent cold compaction at 600 Mpa and sintering at 1050 oC for 30 min. The saturation induction for the sintered material of 149.3 emu/g higher than the synthesized powder and has electrical resistivity value of 7.6 μcm.

  Info
Periodical
Materials Science Forum (Volumes 561-565)
Main Theme
Edited by
Young Won Chang, Nack J. Kim and Chong Soo Lee
Pages
1425-1428
DOI
10.4028/www.scientific.net/MSF.561-565.1425
Citation
W.M. Daoush, "Synthesis and Consolidation of Nano-Sized NiCo Powder by Powder Technology Rout", Materials Science Forum, Vols. 561-565, pp. 1425-1428, 2007
Online since
October 2007
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$32.00
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