Overlaid reflected light microscope micrographs of sub surface Knoop

Fig. 10. (a) A SE SEM micrograph of the indentation-induced damage beneath a 19.62 N Vickers indentation in B4C showing the large NS 398 median and lateral cracks and (b) the extensive fragmentation present in the hemi-spherical compressively damaged zone. (c) A reflected light micrograph showing a direct comparison of the sub-surface indentation-induced damage beneath the mid-point of Vickers indentations at 19.62 N in SiC–AlN–C and B4C.Figure optionsDownload full-size imageDownload as PowerPoint slide
Fig. 11. (a) An approximate Vickers indentation damage volume with increasing load with (b) accompanying calculated damage areas with increasing depth for a xerophytic leaves 19.62 N Vickers indentation in B4C, SiC–5 wt.% B4C and SiC–AlN–C samples.Figure optionsDownload full-size imageDownload as PowerPoint slide
Fig. 12. Approximate Vickers indentation damage depth plotted against (a) load and (b) log10 F for SiC–AlN–C, SiC–5 wt.% B4C and B4C.Figure optionsDownload full-size imageDownload as PowerPoint slide