Three-dimensional morphology of (W,V)Cx in VC-doped WC-Co hard metals

I. Sugiyama, Y. Mizumukai, T. Taniuchi, K. Okada, F. Shirase, T. Tanase, Y. Ikuhara, T. Yamamoto

Research output: Contribution to journalArticlepeer-review

28 Citations (Scopus)


The actual three-dimensional morphology of WC grains and grain growth inhibitors ((W,V)Cx) on the grains are determined for VC-doped WC-Co hard metals. WC grains have a triangular prismatic shape with atomically sharp corners, and some trapezoidal prisms are formed on each prismatic plane. The plan view chemical mapping of a trapezoidal prism has revealed that (W,V)C x phases form hemisphere shapes with some planar layers. The mechanism for forming islands is discussed in terms of lattice mismatch.

Original languageEnglish
Pages (from-to)473-476
Number of pages4
JournalScripta Materialia
Issue number6
Publication statusPublished - 2013 Sept
Externally publishedYes


  • Energy dispersive
  • High-angle annular dark field (HAADF)
  • High-resolution electron microscopy (HREM)
  • Liquid-phase sintering
  • Refractory metals
  • X-ray spectroscopy (EDXS)

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys


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