Pressure Derivatives of the Sound Velocities of Polycrystalline Alumina
Pressure Derivatives of the Sound Velocities of Polycrystalline Alumina
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DOI：
10.1111/j.1151-2916.1966.tb13230.x
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发表时间：
1966-04
影响因子：
3.9
通讯作者：
E. Schreiber;O. Anderson
中科院分区：
文献类型：
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作者：
E. Schreiber;O. Anderson
用“脉冲叠加法”测量了多晶氧化铝小试样的声速及其压力导数。在25°C下，从实验中得到的压力导数高达4 kbar：这些值导致泊松比随压力的变化为dσ/dP = 1.02 × 10−4/ kbar，（等温）体积模量随压力的变化为dBT/dP= 3.99。使用上述值，压缩计算高达400千巴，并与冲击波测量结果进行了比较。因此，测得的压力导数可保持高达几百帕。
The sound velocities and the pressure derivatives of the sound velocities were measured on a small specimen of polycrystalline alumina by the method of “pulse superposition”. The pressure derivatives found from experiments up to 4 kbars at 25°C are: These values lead to the variation of Poisson's ratio with pressure of dσ/dP = 1.02 × 10−4/ kbar and to the variation of (isothermal) bulk modulus with pressure of dBT/dP= 3.99. Using the above values the compression is computed up to 400 kbars and compares well with shock wave measurements. Consequently, the measured pressure derivatives may hold up to several hundred kilobars.