Mechanical properties of hot-forged silicon carbide ceramics

A silicon carbide, with a preferred orientation of platelet grains, was obtained by hot-forging the hot-pressed SiC with equiaxed microstructures. Increased strength (810-1150 MPa), fracture toughness (4.4-5.9 MPa m1/2), and hardness (24.4-26.8 GPa) were achieved in the hot-forged specimens compared to the hot-pressed specimens with random orientation.