| 摘要 |
A diamond-coated tool including: (a) a substrate; and (b) a diamond coating disposed on the substrate. The diamond coating is formed of diamond crystals grown on the substrate. Each of the diamond crystals has a diameter not larger than 2 mum as measured on an outer surface of the diamond coating, and/or a length not larger than 2 mum as measured in a direction in which each of the grown diamond crystals has expanded by its growth. The diamond coating preferably consists of a plurality of layers.
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