Note: Measurement method for sound velocity of melts in large volume press and its application to liquid sodium up to 2.0 GPa.
Note: Measurement method for sound velocity of melts in large volume press and its application to liquid sodium up to 2.0 GPa.
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DOI：
10.1063/1.3625267
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发表时间：
2011-08
期刊：
影响因子：
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通讯作者：
Wei Song;Yonggang Liu;Zhigang Wang;C. Gong;Jie Guo;Wenge Zhou;Hongsen Xie
中科院分区：
文献类型：
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作者：
Wei Song;Yonggang Liu;Zhigang Wang;C. Gong;Jie Guo;Wenge Zhou;Hongsen Xie
基于大体积压力机和传统的脉冲回波超声技术，我们克服了高压下确定液体样品长度的困难，测量了液Na中的声速高达2 GPa。我们的声速结果通过状态方程推导出的 P-V 数据与之前通过测压计方法直接确定的数据非常吻合。这种新的实验技术方便且易于使用，有望推进高压下液态金属和其他熔体热力学性质的研究。
Based on large volume press and conventional pulse-echo ultrasonic technique, we have overcome the difficulty in determining the length of liquid specimen under high pressure, and the sound velocity in liquid Na has been measured up to 2 GPa. The P-V data deduced by our sound velocity results through equation of state is in an excellent agreement with previous data directly determined by piezometer method. This new experimental technique is convenient and ready for use, being expected to advance investigation on thermodynamic properties of liquid metals and other melts under high pressure.