Phase Diagrams of H2O and D2O at High Pressures
Phase Diagrams of H2O and D2O at High Pressures
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H2O 和 D2O 在高压下的相图
DOI：
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发表时间：
1968
期刊：
影响因子：
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通讯作者：
J. Clark
中科院分区：
文献类型：
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作者：
C. Pistorius;E. Rapoport;J. Clark
本文用差热分析法研究了固体H_2O和D_2O的VIII/VII相界。转变的热滞后随压力的增加而减小，但假定的平衡温度与压力无关，直到40 kbar。转变是一级的，在两种情况下的平均转变温度都是−3°C。在25°C时，冰的VI/VII转变压力为21.39 ± 0.05 kbar，与最近的其他研究结果一致，但远低于布里奇曼的值。重冰VI/VII和VI/VIII过渡线位于冰VI/VII和VI/VIII过渡线下方约1.4 kbar。在25°C下，重冰的VI/VII转变发生在19.90 ± 0.07 kbar。布里奇曼的冰VI和冰VII的融化曲线被证明是正确的。重冰VI的融化曲线比冰VI的融化曲线高0.2 °C，但重冰VI/VII/液体三相点位于78°C，20.6 kbar，而H2O的三相点为81.6°C，21.97 kbar。重冰VII的融化曲线似乎具有...
The VIII/VII phase boundaries of solid H2O and D2O were studied by means of differential thermal analysis. The thermal hysteresis of the transition decreases with increasing pressure, but the presumed equilibrium temperatures are independent of pressure to 40 kbar. The transition is of the first order, and the average transition temperature is −3°C in both cases. The ice VI/VII transition pressure at 25°C is 21.39 ± 0.05 kbar, in good agreement with other recent studies, but considerably lower than Bridgman's value. The heavy ice VI/VII and VI/VIII transition lines are located ∼1.4 kbar below the ice VI/VII and VI/VIII transition lines. The heavy ice VI/VII transition at 25°C occurs at 19.90 ± 0.07 kbar. Bridgman's melting curves of ice VI and ice VII are shown to be correct. The melting curve of heavy ice VI is ∼2°C above that of ice VI, but the heavy‐ice VI/VII/liquid triple point is located at 78°C, 20.6 kbar as compared with 81.6°C, 21.97 kbar for H2O. The melting curve of heavy ice VII appears to hav...