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.
|Title of host publication||Advances in Manufacturing Technology XXVII|
|Subtitle of host publication||Proceedings of the 11th International Conference on Manufacturing Research|
|Editors||Essam Shehab, Peter Ball, Benny Tjahjono|
|Place of Publication||Cranfield|
|Publication status||Published - 19 Sep 2013|
|Event||11th International Conference on Manufacturing Research (ICMR2013) - Cranfield Univercity, Cranfield, United Kingdom|
Duration: 19 Sep 2013 → 20 Sep 2013
|Conference||11th International Conference on Manufacturing Research (ICMR2013)|
|Period||19/09/13 → 20/09/13|
- coupled multi-physical fields activation technology
- ultrafine WC-6Co powders
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).