Creation of nanostuctures by extreme conditions: high-pressure synthesis of ultrahard nanocrystalline cubic boron nitride

Vladimir L Solozhenko; Oleksandr O Kurakevych; Yann Le Godec

doi:10.1002/adma.201104361

Creation of nanostuctures by extreme conditions: high-pressure synthesis of ultrahard nanocrystalline cubic boron nitride

Adv Mater. 2012 Mar 22;24(12):1540-4. doi: 10.1002/adma.201104361. Epub 2012 Feb 23.

Authors

Vladimir L Solozhenko¹, Oleksandr O Kurakevych, Yann Le Godec

Affiliation

¹ LSPM-CNRS, Université Paris Nord, 99 avenue J.-B. Clément, Villetaneuse, France. vladimir.solozhenko@univ-paris13.fr

PMID: 22362592
DOI: 10.1002/adma.201104361

Abstract

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.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Boron Compounds / chemistry*
Hardness
Nanostructures / chemistry*
Nanotechnology / methods*
Pressure*
Temperature

Substances

Boron Compounds
boron nitride