In:
Journal of Materials Research, Springer Science and Business Media LLC, Vol. 17, No. 12 ( 2002-12), p. 3139-3145
Abstract:
We report here the high-pressure synthesis of well-sintered millimeter-sized bulks of superhard BC 2 N and BC 4 N materials in the form of a nanocrystalline composite with diamond-like amorphous carbon grain boundaries. The nanostructured superhard B–C–N material bulks were synthesized under high P–T conditions from amorphous phases of the ball-milled molar mixtures. The synthetic B–C–N samples were characterized by synchrotron x-ray diffraction, high-resolution transmission electron microscope, electron energy-loss spectra, and indentation hardness measurements. These new high-pressure phases of B–C–N compound have extreme hardnesses, second only to diamond. Comparative studies of the high P – T synthetic products of BC 2 N, BC 4 N, and segregated phases of diamond + c BN composite confirm the existence of the single B–C–N ternary phases.
Type of Medium:
Online Resource
ISSN:
0884-2914
,
2044-5326
DOI:
10.1557/JMR.2002.0454
Language:
English
Publisher:
Springer Science and Business Media LLC
Publication Date:
2002
detail.hit.zdb_id:
54876-5
detail.hit.zdb_id:
2015297-8
Permalink