title: Phase diagram of the B-B2O3 system at 5 GPa: experimental and theoretical studies.
abstract: X-ray diffraction with synchrotron radiation has been used to study in situ the chemical interaction of beta-rhombohedral boron with boron (III) oxide and phase relations in the B-B2O3 system at pressures up to 6 GPa in the temperature range from 300 to 2800 K. The B-B2O3 system has been thermodynamically analyzed, and its equilibrium phase diagram at 5 GPa has been constructed. Only one thermodynamically stable boron suboxide, B6O, exists in the system. It forms eutectic equilibria with boron and B2O3.
authors.affiliation: LPMTM-CNRS, Université Paris Nord, 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