Crystallographic Anisotropy of Wear on a Polycrystalline Diamond Surface

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We correlate topography and diffraction measurements to demonstrate that grain orientation profoundly influences polishing rates in polycrystalline diamond synthesized by chemical vapor deposition. Grains oriented with {l_brace}111{r_brace} or {l_brace}100{r_brace} planes perpendicular to the surface normal polish at significantly lower rates compared with grains of all other orientations when the surface is polished in continuously varying in-plane directions. These observations agree with predictions of the periodic bond chain vector model, developed previously for single crystals, and indicate that the polishing rate depends strongly on the number of PBC vectors that are within 10{sup o} of the exposed surface plane.

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12 p. (0.3 MB)

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El-dasher, B; Gray, J J; Tringe, J W; Wild, C; W?rner, E; Koidl, P et al. November 16, 2005.

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We correlate topography and diffraction measurements to demonstrate that grain orientation profoundly influences polishing rates in polycrystalline diamond synthesized by chemical vapor deposition. Grains oriented with {l_brace}111{r_brace} or {l_brace}100{r_brace} planes perpendicular to the surface normal polish at significantly lower rates compared with grains of all other orientations when the surface is polished in continuously varying in-plane directions. These observations agree with predictions of the periodic bond chain vector model, developed previously for single crystals, and indicate that the polishing rate depends strongly on the number of PBC vectors that are within 10{sup o} of the exposed surface plane.

Physical Description

12 p. (0.3 MB)

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PDF-file: 12 pages; size: 0.3 Mbytes

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  • Journal Name: Applied Physics Letters, vol. 88, N/A, June 14, 2006, pp. 241915-1 - 241915-3

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  • Report No.: UCRL-JRNL-217284
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 894795
  • Archival Resource Key: ark:/67531/metadc878457

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  • November 16, 2005

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  • Sept. 22, 2016, 2:13 a.m.

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  • April 13, 2017, 4:21 p.m.

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El-dasher, B; Gray, J J; Tringe, J W; Wild, C; W?rner, E; Koidl, P et al. Crystallographic Anisotropy of Wear on a Polycrystalline Diamond Surface, article, November 16, 2005; Livermore, California. (digital.library.unt.edu/ark:/67531/metadc878457/: accessed November 12, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.