埃洛石的Birch-Murnaghan状态方程和高压物性

龚自正; 经福谦; 谢鸿森; 谭华

doi:10.11858/gywlxb.1999.03.007

埃洛石的Birch-Murnaghan状态方程和高压物性

doi: 10.11858/gywlxb.1999.03.007

1.
中国科学院地球化学研究所，地球深部物质实验室，贵州贵阳 550002；
2.
中物院流体物理研究所冲击波物理与爆轰物理实验室，四川绵阳 621900

详细信息

通讯作者:
龚自正

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出版历程
- 收稿日期: 1998-12-25
- 修回日期: 1999-03-04
- 刊出日期: 1999-09-05

Birch-Murnaghan Equation of State and High Pressure Compressibility of Halloysite

1.
Material Laboratory of the Earth's Interior, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China;
2.
Laboratory for Shock Waves and Detonation Physics Research, Institute of Fluid Physics, CAEP, Mianyang 621900, China

More Information

Corresponding author: GONG Zi-Zheng

摘要

摘要: 用欧拉有限应变理论分析了埃洛石的冲击Hugoniot实验数据，得到了其低压相和高压相的等熵体积模量K0S及其对压力的一阶导数K0S。对低压相，在＝0.43(0/)时，K0S＝32.16 GPa，K0S＝7.17；对高压相，在＝1.0(0/)1.5、且相变能各取579.1 J/g（常压下的值）和1 000 J/g时，K0S、K0S分别为103.28 GPa 、4.97和95.85 GPa、5.35。根据高压下物性参数的跃变，讨论并分析了其各个相区物质组成的差异。
- 冲击Hugoniot线 /
- Birch-Murnaghan状态方程 /
- 欧拉有限应变理论 /
- 埃洛石 /
- 高压物性 /
- 相变
Abstract: K0S and K0S, the zero pressure adiabatic bulk modulus and its first pressure derivative of Birch-Murnaghan EOS (isentrope) for halloysite, are obtained in terms of shock Hugoniot data by using the Eulerian finite strain theory. Under the assumption =0.43(0/), for the low pressure phase K0S=32.16 GPa and K0S=7.17, but we find K0S=103.28 GPa, K0S=4.97 and K0S=95.85 GPa, K0S=5.35 for the high pressure phase, with the phase transition energy of 579.1 and 1 000 J/g, respectively, under ＝1.0(0/)1.5. Analysis for the compressibility of its low-pressure phase, high-pressure phase and mixed-phase indicate that the different compressibilities between them corresponding to their different phase compositions.
- shock Hugoniot /
- Birch-Murnaghan EOS /
- Eulerian finite strain theory /
- halloysite /
- high pressure compressibility /
- phase transition

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