Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1623779 | Journal of Alloys and Compounds | 2008 | 7 Pages |
Abstract
This study compares the microstructure and mechanical properties of plain and 0.9 or 3.6 wt% VC- or Cr3C2-doped WC–12 wt% Co hardmetals with 40 wt% NbC, prepared by pulsed electric current sintering (PECS) in the solid state for 4 min at 1240 °C and conventional pressureless liquid phase sintering (CS) for 1 h at 1420 °C. The addition of VC or Cr3C2 was found to inhibit grain growth of the residual WC grains, whereas the size of the solid solution (Nb,W,V/Cr)C grains was hardly influenced. The type of grain growth inhibitor and densification temperature however, strongly influenced the composition of the NbC solid solution formed, which was thermodynamically and experimentally assessed.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
S.G. Huang, L. Li, O. Van der Biest, J. Vleugels,