-Fe2SiO4在静水压下的压缩行为的测定

王莉君; Ming L C; Manghnani M H

doi:10.11858/gywlxb.1994.04.008

-Fe2SiO4在静水压下的压缩行为的测定

doi: 10.11858/gywlxb.1994.04.008

1.
中国科学院物理研究所，北京 100080；
2.
Department of Geology and Geophysics, University of hawaii, Honolulu HI 96822, USA

详细信息

通讯作者:
王莉君

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出版历程
- 收稿日期: 1993-11-08
- 修回日期: 1994-01-14
- 发布日期: 1994-12-05

Study on Compressive Behavior of -Fe2SiO4 under Hydrostatic Pressure

1.
Institute of Physics, Academia Sinica, Beijing 100080, China;
2.
Department of Geology and Geophysics, University of hawaii, Honolulu HI 96822, USA

More Information

Corresponding author: WANG Li-Jun

摘要

摘要: 采用同步辐射高压原位X光衍射技术及金刚石对顶压砧高压装置，对-Fe2SiO4进行了静水压条件下等温压缩行为的测定，最高压力达23 GPa。-Fe2SiO4在0~23 GPa压力范围内的p、V数据表明，其等温压缩可分为两个阶段：若设K0'＝4，在0~18 GPa，K0＝1892 GPa；而在18~230 GPa，K0=2132 GPa。我们认为，样品在18 GPa以下处于较好的静水压状态，压力超过18 GPa，传压介质的静水压性质变坏，所以K0值偏高。在整个实验过程中并未发现样品有任何发生相变的迹象。最后，对一些虽然使用了液体介质但得不到静水压条件的实验现象进行了讨论。
- -Fe2SiO4 /
- 静水压 /
- 压缩行为 /
- 同步辐射
Abstract: The compressive behavior of -Fe2SiO4 at high pressure up to 23 GPa and room temperature has been measured by using synchrotron radiation and in situ high pressure X-ray diffraction techniques with DAC. The p-V relationship of -Fe2SiO4 at 0～23 GPa indicated that the isothermal compression process can be divided into two steps: if K0'=4, the bulk modulus K0 =1892 GPa at 0～18 GPa, and K0=21.32 GPa at 18～23 GPa. We didn't find any imformation of the phase transformation of -Fe2SiO4 in the whole experimental process. Based on the experimental data, it seems to us that the sample was in quite good hydrostatic pressure up to 18 GPa, but was in non-hydrostatic pressure due to solidification of the liquid medium when the pressure beyond 18 GPa. Finally, the phenomenon that the sample with incorrect loading method has higher K0 in those hydrostatic pressure experiments is discussed.
- -Fe2SiO4 /
- hydrostatic pressure /
- compressive behavior /
- synchrotron radiation

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参考文献(12)

Akimoto S, Akaogi M, Kamada K, et al. The Geophysics of the Pacific Ocean Basin and Its Margin, Geophys Monogr Ser, 19. Sutton G H, Manghnani M H, Moberly R, ed. Washington: AGU, WDC, 1976: 399.

Weidner D J, Ito E. High-Pressure Research in Mineral Physics (The Akimoto Volume). Manghnani M H, Syono Y, ed. Tokyo: Terra Sci Pub Co. /Washington: AGU, WDC, 1987: 439.

Wilburn D R, Bassett W A. High Temperatures-High Pressures, 1976, 8: 343.

Sato Y. High Pressure Research: Applications to Geophysics. New York: Academic Press, 1977: 642.

Mao H K, Takahashi T, Bassett W A, et al. J Geophys Res, 1969, 74: 1061.

Yagi T, Ida Y, Sato Y, et al. Phys Earth Planet Inter, 1975, 10: 348.

Takahashi T. EOS (Trans Am Geophys Union), 1970, 51: 827.

Liu Zhenxian, Cui Qiliang, Zou Guangtian. Physics Letters A, 1990, 143: 79.

胡静竹, 唐汝明, 徐济安. 物理学报, 1980, 29: 135.

Liebermann R C. Geophys J R Astron Soc, 1975, 42: 899.

Mizutani H, Abe K. Phys Earth Planet Inter, 1972, 5: 345.

徐济安. 高压物理学报, 1987, 1(2): 97.

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