The products obtained via HPHT sintering have high density (7.00 g/cm3), high hardness (1727HV30) and high fracture toughness (7.2 MPam1/2).
The particles can be cracked under high pressure. In addition, the crystalline size has not been obviously increased during the sintering.
The BSEM micrographs of cermets. They are not the classical black (white) core/grey rim structures but even distributed three colors in the BSEM images.