Figure 7

FESEM images of crack microstructure and its growth path in samples (a) 1 and (b) 5B1G, and (c) FESEM image of fracture surface in sample 5B1G.

FESEM images of crack microstructure and its growth path in samples (a) 1 and (b) 5B1G, and (c) FESEM image of fracture surface in sample 5B1G.