Solid-liquid hybrid assembly for ultrasonic elasticity measurements under hydrostatic conditions of up to 8 GPa in a Kawai-type multianvil apparatus
Solid-liquid hybrid assembly for ultrasonic elasticity measurements under hydrostatic conditions of up to 8 GPa in a Kawai-type multianvil apparatus
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DOI：
10.1063/1.1865792
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发表时间：
2005-02
影响因子：
1.6
通讯作者：
M. Song;A. Yoneda;E. Ito
中科院分区：
文献类型：
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作者：
M. Song;A. Yoneda;E. Ito
设计了一种固-液混合装置，用于在Kawai型多砧装置中进行材料的超声弹性测量。在组件中，碳化钨立方体砧作为声信号的缓冲杆。将传感器和样品安装在缓冲棒砧座的两个对角相对的截角上。将样品浸入充满液体压力介质（甲醇-乙醇混合物（体积比4：1））的液体池中，该液体压力介质为样品产生流体静力学条件。用液体池内的铋压力校准物监测压力。使用单晶MgO、多晶氧化铝和硅酸盐玻璃样品的初步实验成功地进行了高达8 GPa的压力。该装置特别适用于单晶样品在静水压力下的精确弹性测量。
A solid–liquid hybrid assembly has been designed for ultrasonic elasticity measurements of materials under hydrostatic conditions in a Kawai-type multianvil apparatus. In the assembly, a tungsten–carbide cubic anvil served as the buffer rod for the acoustic signals. The transducer and sample were mounted on two diagonally opposite truncated corners of the buffer-rod anvil. The sample was immersed in a liquid cell filled with a liquid pressure medium, a methanol–ethanol mixture (4:1 in volume), which produced hydrostatic conditions for the sample. The pressure was monitored with a bismuth pressure calibrant inside the liquid cell. Preliminary experiments using single-crystal MgO, polycrystal alumina, and silicate glass samples were successfully conducted up to 8GPa. This assembly is especially useful for precise elasticity measurements of single-crystal samples under hydrostatic compression.