Fabrication of binder-free ultrafine WC-6Co composites by coupled multi-physical fields activation technology

Kunlan Huang, Yi Qin, Deqiang Yin, Yi Yang, Gang Yang

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

Abstract

A novel sintering method, named as coupled multi-physical fields activation technology, has been introduced for the forming of various material powder systems. Compared with the conventional ones, this technique presents more advantages: lower sintering temperature, shorter forming time, and remarkable inhibition of the grains coarsening. In the study, the cylinders of Φ4.0mm×4.0mm had been formed with ultrafine WC-6Co powders. The relative properties of sintered WC-6Co cemented carbides, such as hardness and the microstructures, had been obtained. The study has shown that a relative density, 97.80%, of the formed samples, could been achieved when the case of temperature 850℃, heating rate 50℃/s, pressure 75MPa and Electro-heating loop 6 times, were used. More importantly, the circumscription for the growth of grain size of WC, attributed to the effect of electrical field, renders coupled multi-physical fields activation technology applicable for getting WC- 6Co cemented carbides with fine grain size and good properties.
Original languageEnglish
Title of host publicationAdvances in Manufacturing Technology XXVII
Subtitle of host publicationProceedings of the 11th International Conference on Manufacturing Research
EditorsEssam Shehab, Peter Ball, Benny Tjahjono
Place of PublicationCranfield
Pages369-374
Publication statusPublished - 19 Sep 2013
Event11th International Conference on Manufacturing Research (ICMR2013) - Cranfield Univercity, Cranfield, United Kingdom
Duration: 19 Sep 201320 Sep 2013

Publication series

Name
ISSN (Print)2053-3373

Conference

Conference11th International Conference on Manufacturing Research (ICMR2013)
CountryUnited Kingdom
CityCranfield
Period19/09/1320/09/13

Keywords

  • fabrication
  • composites
  • coupled multi-physical fields activation technology
  • ultrafine WC-6Co powders
  • microstructures

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  • Cite this

    Huang, K., Qin, Y., Yin, D., Yang, Y., & Yang, G. (2013). Fabrication of binder-free ultrafine WC-6Co composites by coupled multi-physical fields activation technology. In E. Shehab, P. Ball, & B. Tjahjono (Eds.), Advances in Manufacturing Technology XXVII: Proceedings of the 11th International Conference on Manufacturing Research (pp. 369-374).