Research Article
Nanopolycrystalline Diamond Sintered from Onion-Like Carbon
Table 2
Parameters of OLCs annealed at 1100–1400°C.
| | Annealing temperature (°C) | Average graphite layer number | Maximum particle size (nm) | Minimum particle size (nm) | Average particle size (nm) |
| | 900 | Lamellar structure | 8.0 | 5.0 | 5.7 | | 1000 | 3 | 8.3 | 5.1 | 5.9 | | 1100 | 4 | 8.5 | 5.3 | 6.1 | | 1200 | 6 | 9 | 5.5 | 6.5 | | 1300 | 8 | 9.5 | 5.7 | 7.5 | | 1400 | 12 | 9.8 | 5.2 | 8 |
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