Creation of Nanostuctures by Extreme Conditions: High-Pressure Synthesis of Ultrahard Nanocrystalline Cubic Boron Nitride
Creation of Nanostuctures by Extreme Conditions: High-Pressure Synthesis of Ultrahard Nanocrystalline Cubic Boron Nitride
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DOI：
10.1002/adma.201104361
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发表时间：
2012-03-22
影响因子：
29.4
通讯作者：
Le Godec, Yann
中科院分区：
文献类型：
--
作者：
Solozhenko, Vladimir L.;Kurakevych, Oleksandr O.;Le Godec, Yann
报道了在20 GPa和1770 K下，由具有”理想无规层”结构的类石墨氮化硼（BN）直接相变合成高纯块体纳米结构立方氮化硼（cBN）。纳米cBN（H（V）= 85 GPa）的硬度相对于常规多晶cBN（H（V）≤ 45 GPa）的两倍增加显然是纳米尺寸效应的结果。
The synthesis of high-purity bulk nanostructured cubic boron nitride (cBN) at 20 GPa and 1770 K by direct phase transformation of graphite-like BN with an" ideal random layer" structure is reported. The two-times increase of hardness of nano-cBN (H (V)= 85 GPa) with respect to conventional polycrystalline cBN (H (V)∼ 45 GPa) is evidently a result of nanosize effects.