Phase diagram of the B-B2O3 system at 5 GPa: experimental and theoretical studies |
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Authors: | Solozhenko Vladimir L Kurakevych Oleksandr O Turkevich Vladimir Z Turkevich Dmitry V |
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Institution: | LPMTM-CNRS, Université Paris Nord, 93430 Villetaneuse, France. vls@lpmtm.univ-paris13.fr |
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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. |
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