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Crystallographic anisotropy of wear on a polycrystalline diamond surface
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View: Figures


Image of FIG. 1.
FIG. 1.

(a) Schematic of polished diamond specimen showing one of two areas of interest. (b) Electron backscatter diffraction map showing the grains mapped in the indicated area, with the gray scale levels indicating the misorientation angle from [111]. The black box represents a area, shown in (c) as an EBSD map, and in (d) as an atomic force microscopy map. Comparison of (c) and (d) shows differing grain height as a function of orientation.

Image of FIG. 2.
FIG. 2.

Anisotropy of diamond polishing. Plot of the grain depth as a function of plane normal in the standard stereographic triangle relative to the nearest {111} grain, showing the effect of grain crystallography on the relative polishing rate.

Image of FIG. 3.
FIG. 3.

(a) Calculated values of the product as a function of in-plane rotation of for the (001), (101), and (111) planes. At 0°, is a ⟨110⟩ direction. Inset unit cell projections correlate in-plane vectors to plot features. Note that out-of-plane vectors influence the product for the {101} polishing plane. (b) The effect of the number of PBC vectors within 10° of the polishing plane on the amount of material polished for all the grains studied, illustrating the increase in polishing difficulty due to the influence of PBC vectors.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Crystallographic anisotropy of wear on a polycrystalline diamond surface