Phase Diagram of the B−B2O3 System at 5 GPa: Experimental and Theoretical Studies

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• 作者：Vladimir L. Solozhenko ; Oleksandr O. Kurakevych ; Vladimir Z. Turkevich ; Dmitry V. Turkevich
• 刊名：Journal of Physical Chemistry B
• 出版年：2008
• 出版时间：May 29, 2008
• 年：2008
• 卷：112
• 期：21
• 页码：6683 - 6687
• 全文大小：113K
• 年卷期：v.112,no.21(May 29, 2008)
• ISSN：1520-5207

文摘

X-ray diffraction with synchrotron radiation has been used to study in situ the chemical interaction of β-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.