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A Preliminary Study on Conductivity of Serpentinite at High Pressure and High Temperature
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Zai-Yang LIU1, Duo-Jun WANG1, He-Ping LI2, Ying-Xing GUO1, Ying-Jie YU1
Chinese Journal of High Pressure Physics | 2011, 25(2) : 147 - 152
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Chinese Journal of High Pressure Physics | 2011, 25(2): 147-152
A Preliminary Study on Conductivity of Serpentinite at High Pressure and High Temperature
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Zai-Yang LIU1, Duo-Jun WANG1, He-Ping LI2, Ying-Xing GUO1, Ying-Jie YU1
Affiliations
  • 1.Key Laboratory of Computational Geodynamics, Graduate University of Chinese Academy of Sciences, Beijing 100049, China
  • 2.Laboratory for Study of the Earth's Interior and Geofluids, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China
Published: 2011-04-15
Outline
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Using an AC impedance spectroscopy within the frequency ranges of 0.1~106 Hz, the electrical conductivities of serpentinite were determined from 373 K to 933 K and at 2.0 GPa and 4.0 GPa respectively. The conduction mechanisms of serpentinite before and after dehydration were also analyzed. The experimental results show that complex impedance depends on the variation of frequency, and the electrical conductivity of serpentinite is highly dependant on temperature but only slightly on pressure. The activation enthalpies derived are ~0.6 eV before dehydration and up to 2.0 eV after dehydration. The dehydration of serpentinite, occurred at 690~761 K, causes the jump of the electrical conductivity and alters conduction mechanism. The analysis results indicate that the charge carriers in serpentinite are probably electrons transferred between Fe2+ and Fe3+ before dehydration and are dominated by ions after dehydration.

high temperature and high pressure  /  serpentinite  /  conductivity  /  complex impedance  /  dehydration
刘在洋, 王多君, 李和平, 郭颖星, 于英杰. 高温高压下蛇纹岩电导率的初步研究. 高压物理学报, 2011 , 25 (2) : 147 -152 .
Zai-Yang LIU, Duo-Jun WANG, He-Ping LI, Ying-Xing GUO, Ying-Jie YU. A Preliminary Study on Conductivity of Serpentinite at High Pressure and High Temperature[J]. Chinese Journal of High Pressure Physics, 2011 , 25 (2) : 147 -152 .
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Year 2011 volume 25 Issue 2
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Article Info
  • Receive Date：2010-05-13
  • Online Date：2026-11-02
  • Published：2011-04-15
Article Data
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History
  • Received：2010-05-13
  • Revised：2010-09-14
Funding
Affiliations
    1.Key Laboratory of Computational Geodynamics, Graduate University of Chinese Academy of Sciences, Beijing 100049, China
    2.Laboratory for Study of the Earth's Interior and Geofluids, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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