Table 1.

The Vickers hardness and toughness of B₄C ceramics with different sintering processes.

Article	Powder Particle Size (μm)	Method: Pressure; Temperature; Heating Rate; Soaking Time	Fracture Toughness (MPa·m1/2); Vickers Hardness (GPa)
Ref. [18]	1.21 μm	HPS: 40 MPa; 1900 °C; 10 °C/min; 60 min	2.76 ± 0.25; 21.8 ± 1.1
		SPS: 40 MPa; 1900 °C; 100 °C/min; 6 min	3.15 ± 0.23; 26.4 ± 4.3
Ref. [21]	2.4 μm	SPS: 50 MPa; 1800 °C; 100 °C/min; 15 min	2.8; 37.2
Ref. [23]	0.5 μm	SPS: 75 MPa; 1800 °C; 100 °C/min; 15 min	2.5 ± 0.2; 34 ± 2
Ref. [30]	0.3 μm	PSPS: 0 MPa; 2100 °C; 100 °C/min; 5 min	-; 27
Our work	0.5 μm	SPS: 50 MPa; 1850 °C; 100 °C/min; 10 min	3.21 ± 0.13; 33.5 ± 0.2