Improvement in Contact Strength of Si₃N₄/SiC Composite by Crack Healing

Table 2

Shape parameter 𝛼, scale parameter 𝛽, bending strength, and roughness of specimens.

Specimens	Shape	Scale	Bending	Surface
	parameter	parameter	strength	roughness
	α (—)	β (kN)	σ (MPa)	𝑅𝑧 (μm)
Smooth	1.9	0.65	861.9	0.10
Smooth + Healed	3.8	0.93	915.4	0.66
#200	1.4	0.33	521.6	2.74
#200 + Healed	1.4	0.12	900.0	2.81
#400	1.4	0.40	648.5	1.52
#400 + Healed	1.1	0.30	913.7	1.82
#400 + Rap	1.1	0.56	676.2	0.15
#400 + Rap + Healed	3.6	1.06	856.5	1.02
#400 + Healed + Rap	3.2	1.06	—	0.23