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

作　　者：代立东 李和平 胡海英 单双明 

机构地区：[1]Laboratory for Study of the Earth's Interior and Geofluids,Institute of Geochemistry,Chinese Academy of Sciences [2]Graduate School of the Chinese Academy of Sciences

出　　处：《Chinese Physics B》2011年第4期576-580,共5页中国物理B（英文版）

基　　金：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);the National Natural Science Foundation of China (Grant Nos. 40974051,40704010 and 40573046)

摘　　要：In this paper, a new of oxygen fugaeity 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.In this paper, a new of oxygen fugaeity 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 

分 类 号：P589[天文地球—岩石学]