Particle-size, size distribution and dislocations in nanocrystalline tungsten-carbide

T. Ungár, A. Borbély, G. R. Goren-Muginstein, S. Berger, A. R. Rosen

Research output: Contribution to journalArticle

96 Citations (Scopus)

Abstract

Ball-milled WC powder has been compacted and sintered. The particle size has been determined by transmission and scanning electron microscopy and high resolution X-ray diffraction. The X-ray diffraction profiles were evaluated for particle size and dislocation densities by the recently developed procedures of modified Williamson-Hall plot and modified Warren-Averbach method. Log-normal particle size distributions have been obtained by a newly developed numerical method from the size parameters provided by X-ray line profile analysis. The size distributions obtained by TEM and X-rays are compared and discussed. The dislocation density was found to be 1.9 × 1017 m-2 in the ball-milled powder which decreases to 2.0 × 1015 m-2 after annealing.

Original languageEnglish
Pages (from-to)103-113
Number of pages11
JournalNanostructured Materials
Volume11
Issue number1
DOIs
Publication statusPublished - Feb 1999

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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