TY - GEN
T1 - Fabrication of binder-free ultrafine WC-6Co composites by coupled multi-physical fields activation technology
AU - Huang, Kunlan
AU - Qin, Yi
AU - Yin, Deqiang
AU - Yang, Yi
AU - Yang, Gang
PY - 2013/9/19
Y1 - 2013/9/19
N2 - 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.
AB - 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.
KW - fabrication
KW - composites
KW - coupled multi-physical fields activation technology
KW - ultrafine WC-6Co powders
KW - microstructures
UR - https://dspace.lib.cranfield.ac.uk/handle/1826/9539
M3 - Conference contribution book
SN - 9781907413230
SP - 369
EP - 374
BT - Advances in Manufacturing Technology XXVII
A2 - Shehab, Essam
A2 - Ball, Peter
A2 - Tjahjono, Benny
CY - Cranfield
T2 - 11th International Conference on Manufacturing Research (ICMR2013)
Y2 - 19 September 2013 through 20 September 2013
ER -