title: Phase diagram of the B-BN system at 5 GPa.
abstract: The chemical interaction and phase relations in the B-BN system have been in situ studied at 5 GPa and temperatures up to 2800 K using X-ray diffraction with synchrotron radiation. The thermodynamic analysis of the B-BN system based on experimental data allowed us to construct equilibrium and metastable phase diagrams of the system at 5 GPa. The only thermodynamically stable boron subnitride, B(13)N(2), melts incongruently at 2600 K and forms eutectic equilibrium with boron at 2300 K and 4 at. % of nitrogen.
authors.affiliation: LPMTM-CNRS, Institut Galilée, Université Paris Nord, 99, av. J.B. Clément, 93430 Villetaneuse, France. vls@lpmtm.univ-paris13.fr
authors.forename: Vladimir L
authors.initials: VL
authors.lastname: Solozhenko
authors.forename: Oleksandr O
authors.initials: OO
authors.lastname: Kurakevych
authors.forename: Vladimir Z
authors.initials: VZ
authors.lastname: Turkevich
authors.forename: Dmitry V
authors.initials: DV
authors.lastname: Turkevich