STRUCTURAL FEATURES OF BORON-NITRIDE DENSE PHASE-FORMATION FROM RHOMBOHEDRAL MODIFICATION UNDER HIGH STATIC PRESSURE

Authors
BRITUN VF KURDYUMOV AV PETRUSHA IA
Citation
Vf. Britun et al., STRUCTURAL FEATURES OF BORON-NITRIDE DENSE PHASE-FORMATION FROM RHOMBOHEDRAL MODIFICATION UNDER HIGH STATIC PRESSURE, Journal of Materials Science, 28(24), 1993, pp. 6575-6581
Citations number
10
Categorie Soggetti
Material Science
Journal title
Journal of Materials Science → ACNP
ISSN journal
00222461
Volume
28
Issue
24
Year of publication
1993
Pages
6575 - 6581
Database
ISI
SICI code
0022-2461(1993)28:24<6575:SFOBDP>2.0.ZU;2-I
Abstract
The real structure of boron nitride (BN) polycrystals after high-press ure treatment was investigated by X-ray and transmission electron micr oscopy methods. Different stages of boron nitride polycrystal evolutio n under high quasistatic pressure and high temperature were fixed, inv olving rhombohedral boron nitride twinning, one-dimensionally disorder ed structure, 2H, 4H, 3C dense phase formation and 3C-BN recrystalliza tion. A new structural scheme of BN(r)-BN(w) transition is proposed.