BN Nanoparticles/Si₃N₄ Wave-Transparent Composites with High Strength and Low Dielectric Constant

Figure 4

The SEM images of the BN_np/Si₃N₄ composites. (a) 10 vol% fracture surface; (b) 20 vol% fracture surface; (c) 10 vol% polished and etched surface; (d) 20 vol% polished and etched surface.

(a)

(b)

(c)

(d)