Paper Title:
In Situ Observations of the Densification Behavior of WC-FeAl-B Composites during Liquid Phase Sintering
  Abstract

The densification behavior of WC composites based on iron aluminide binder was investigated using laser scanning confocal mi¬croscopy (LSCM). Doped Fe60Al40 alloys with boron levels ranging from 0 to 0.1 wt% were used as the aluminide binders. The aluminide binders were prepared using controlled atmosphere ring grinding and then blended with WC powder. The composite powder compacted in an alumina crucible and held in a platinum holder in the confocal microscope. The temperature increased from ambient temperature up to 1500 °C under high purity argon. The presence of boron was found to facilitate compaction of the composites and improve the wetting between WC and FeAl binder during liquid phase sintering. Increasing the amount of boron in the binder resulted in the melting of binder at lower temperature and increasing of the compacting of the intermetallic tungsten carbide composites.

  Info
Periodical
Materials Science Forum (Volumes 638-642)
Main Theme
Edited by
T. Chandra, N. Wanderka, W. Reimers , M. Ionescu
Pages
921-926
DOI
10.4028/www.scientific.net/MSF.638-642.921
Citation
M. Ahmadian, M. Reid, R. Dippenaar, T. Chandra, D. Wexler, A. Calka, "In Situ Observations of the Densification Behavior of WC-FeAl-B Composites during Liquid Phase Sintering", Materials Science Forum, Vols. 638-642, pp. 921-926, 2010
Online since
January 2010
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$32.00
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