Figure 3
From: Elastic and mechanical softening in boron-doped diamond
Hardness measurements of boron-doped diamond crystal BDD-D4 were analyzed by (a) SEM and (b–d) 3D optical microscopy for comparison. Because the SEM image is two dimensional, it can be difficult to distinguish cracking from the true edge of the indentation. Using 3D microscopy, depth information is used to determine the edge position. (e) HV of BDD in a region of high boron concentration (2000–3000 ppm) as a function of applied load using edge lengths determined by SEM (black) and by 3D optical microscopy (blue). (f) Dependence of Vickers hardness on boron content.
