Abstract
We present the measurement of the Young’s modulus ( E ) of a nanopolycrystalline diamond (NPD) sample synthesized by the direct conversion of graphite under high pressure and temperature. E has been measured along with the nanohardness ( H N ) using the nanoindentation technique ( E = 707 GPa and H N = 62 GPa). Comparing E and H N of NPD with other commercially available superhard anvils and polycrystalline diamonds, we demonstrate its greater hardness and elastic properties.
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