Fig. 3

SEM image and schematic diagram of the tensile fractures. a CFRP, scale bars 200 μm (left panel), 20 μm (upper right panel) and 50 μm (lower right panel); b HFRP 5C5S-1, scale bars 500 μm (left panel), 100 μm (upper right panel) and 50 μm (lower right panel)