The WC-8Co powder, crushed and milled from recycled hard metals, was compacted with the pulsed electric current sintering method. The smallest particles were of the size about 0.4 ìm and agglomerates 1-7 ìm. Effect of the sintering temperature and heating rate were studied. Hard metal was sintered to a density of 98.3% at 1613 K within 3.5 min under 16 MPa pressure. Density and hardness were highest for the slowest heating regime, 98.1% and HV1 1981 kg/mm2, respectively. Heating speed 100 K/min was used for fabrication of fully densed samples, sintered under pressure of 100 MPa, at 1593 K in 3 min.
|Journal||Estonian Journal of Engineering|
|Publication status||Published - 2009|
|MoE publication type||A1 Journal article-refereed|
|Event||18th International Baltic Conference on Engineering Materials and Tribology, BALTMATTRIB 2009 - Tallinn, Estonia|
Duration: 22 Oct 2009 → 23 Oct 2009
- pulsed electric current sintering