TITLE

Synthesis of superhard cubic BC[sub 2]N

AUTHOR(S)
Solozhenko, Vladimir L.; Andrault, Denis; Fiquet, Guillaume; Mezouar, Mohamed; Rubie, David C.
PUB. DATE
March 2001
SOURCE
Applied Physics Letters;3/5/2001, Vol. 78 Issue 10, p1385
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Cubic BC[sub 2]N was synthesized from graphite-like BC[sub 2]N at pressures above 18 GPa and temperatures higher than 2200 K. The lattice parameter of c-BC[sub 2]N at ambient conditions is 3.642(2) Å, which is larger by 1.48% than would be expected based on ideal mixing between diamond and cubic boron nitride. The bulk modulus of c-BC[sub 2]N is 282 GPa which is one of the highest bulk moduli known for any solid, and is exceeded only by the bulk moduli of diamond and c-BN. The hardness of c-BC[sub 2]N is higher than that of c-BN single crystals which indicates that the synthesized phase is only slightly less hard than diamond. © 2001 American Institute of Physics.
ACCESSION #
4710362

 

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