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Journal of Materials Science

, Volume 29, Issue 4, pp 987–994 | Cite as

Cobalt intergranular segregation in WC-Co composites

  • J. Vicens
  • M. Benjdir
  • G. Nouet
  • A. Dubon
  • J. Y. Laval
Papers

Abstract

Interfaces between carbide grains in the tungsten carbide-cobalt composite have been considered. Different techniques, such as transmission electron microscopy and energy dispersive X-ray analysis have been used to characterize the orientation relationship, the nature of the planes and the chemical composition of the grain boundaries.The cobalt concentration at WC-WC grain boundaries was determined by X-ray energy selective analysis in the TEM. Cobalt profiles were performed across low-angle grain boundaries, coincidence and general grain boundaries. Cobalt segregation was found whenever dislocations were imaged in the grain-boundary plane of a low-energy grain boundary. The segregation value was compared with the segregation ratio measured in special grain boundaries characterized by a coincidence site lattice.

Keywords

Transmission Electron Microscopy Carbide Cobalt Tungsten Site Lattice 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Chapman & Hall 1994

Authors and Affiliations

  • J. Vicens
    • 1
  • M. Benjdir
    • 1
  • G. Nouet
    • 1
  • A. Dubon
    • 2
  • J. Y. Laval
    • 2
  1. 1.Laboratoire d'Etudes et de Recherches sur les Matériaux, URA CNRS no. 1317, ISMRaUniversité de CAENCaen CedexFrance
  2. 2.Laboratoire de Physique du SolideUPR CNRS no. 5, ESPCIParis Cedex 05France

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