中国物理B ›› 2011, Vol. 20 ›› Issue (4): 49101-049101.doi: 10.1088/1674-1056/20/4/049101

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In-situ control of oxygen fugacity for laboratory measurements of electrical conductivity of minerals and rocks in a multi-anvil press

代立东1, 李和平1, 单双明1, 胡海英2   

  1. (1)Laboratory for Study of the Earth's Interior and Geofluids, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China; (2)Laboratory for Study of the Earth's Interior and Geofluids, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China;Graduate School of the Chinese Academy of Sciences, Beijing 100049, China
  • 收稿日期:2010-11-03 修回日期:2010-12-03 出版日期:2011-04-15 发布日期:2011-04-15
  • 基金资助:
    Project supported by the Knowledge Innovation Key Orientation Project of the Chinese Academy of Sciences (CAS) (Grant Nos. KZCX2-YW-Q08-3-4, KZCX2-YW-QN110, and KZCX3-SW-124), Large-scale Scientific Apparatus Development Program of CAS (Grant No. YZ200720), the National High Technology Research and Development Program of China (Grant No. 2006AA09Z205), and the National Natural Science Foundation of China (Grant Nos. 40974051, 40704010 and 40573046).

In-situ control of oxygen fugacity for laboratory measurements of electrical conductivity of minerals and rocks in a multi-anvil press

Dai Li-Dong(代立东)a),Li He-Ping(李和平)a), Hu Hai-Ying(胡海英)a)b), and Shan Shuang-Ming(单双明)a)   

  1. a Laboratory for Study of the Earth's Interior and Geofluids, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China; b Graduate School of the Chinese Academy of Sciences, Beijing 100049, China
  • Received:2010-11-03 Revised:2010-12-03 Online:2011-04-15 Published:2011-04-15
  • Supported by:
    Project supported by the Knowledge Innovation Key Orientation Project of the Chinese Academy of Sciences (CAS) (Grant Nos. KZCX2-YW-Q08-3-4, KZCX2-YW-QN110, and KZCX3-SW-124), Large-scale Scientific Apparatus Development Program of CAS (Grant No. YZ200720), the National High Technology Research and Development Program of China (Grant No. 2006AA09Z205), and the National Natural Science Foundation of China (Grant Nos. 40974051, 40704010 and 40573046).

摘要: In this paper, a new of oxygen fugacity controltechnique that can be widely applied to in-situ measurement of the grain interior electrical conductivities of minerals and rocks is presented for high temperature and high pressure. Inside the sample assembly, a metal and corresponding metal oxide form a solid oxygen buffer. The principle of this technique is to randomly monitor and adjust oxygen fugacity in the large-volume multi-anvil press by changing the types of solid oxygen buffer, metal shielding case and electrodes. At a pressure of up to 5.0 GPa and a temperature of up to 1423 K, the electrical conductivities of the dry peridotite are tested under the conditions of different oxygen fugacities. By virtue of this new technique, more and more reasonable and accurate laboratory electrical property data will be successfully obtained under controlled thermodynamic conditions.

关键词: oxygen fugacity, electrical conductivity, large-volume multi-anvil press

Abstract: In this paper, a new of oxygen fugacity controltechnique that can be widely applied to in-situ measurement of the grain interior electrical conductivities of minerals and rocks is presented for high temperature and high pressure. Inside the sample assembly, a metal and corresponding metal oxide form a solid oxygen buffer. The principle of this technique is to randomly monitor and adjust oxygen fugacity in the large-volume multi-anvil press by changing the types of solid oxygen buffer, metal shielding case and electrodes. At a pressure of up to 5.0 GPa and a temperature of up to 1423 K, the electrical conductivities of the dry peridotite are tested under the conditions of different oxygen fugacities. By virtue of this new technique, more and more reasonable and accurate laboratory electrical property data will be successfully obtained under controlled thermodynamic conditions.

Key words: oxygen fugacity, electrical conductivity, large-volume multi-anvil press

中图分类号:  (Rock and mineral magnetism)

  • 91.25.F-
91.35.Gf (Structure of the crust and upper mantle) 91.60.Pn (Magnetic and electrical properties)