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Electrochemical Studies on the Corrosion of Electrically Conductive Sulfide Minerals in High Pressure Hydrothermal Fluids - a Case Study From Pyrite | |
Sen Lin; Heping Li; Can Cui | |
2017 | |
发表期刊 | International Journal of Electrochemical Science |
卷号 | 12期号:1页码:610-617 |
摘要 | Electrochemical data concerning electrically conductive sulfide minerals submitted to high pressure hydrothermal fluids above 150 degrees C has not been reported in spite of its significance. In this work, electrochemical impedance spectroscopy (EIS) and Tafel studies of pyrite corrosion in pure water, 3.5% NaCl solution and 0.1 M sulfuric acid with 1796 kPa O-2 at 350 degrees C, 30 MPa were conducted, with the assistance of a self-designed three-electrode electrochemical measurement set-up that can operate in high pressure hydrothermal fluids. Results show that in pure water, 3.5% NaCl solution, and 0.1 M sulfuric acid with 1796 kPa O-2, corrosion potential (E-corr) is respectively -150, -334 and -752 mV, corrosion current (I-corr) is respectively 1.44E-5, 1.95E-4 and 7.73E-3 A. The solid-liquid interface information at pyrite surface achieved by EIS measurements reveals an important reason of the difference between the values of E-corr and I-corr in the three studied fluids. The electrochemical studies in this work also provide a promising method for research into the corrosion of other conductive sulfide minerals in high pressure hydrothermal fluids. |
收录类别 | SCI |
语种 | 英语 |
文献类型 | 期刊论文 |
条目标识符 | http://ir.gyig.ac.cn/handle/42920512-1/8181 |
专题 | 地球内部物质高温高压实验室 |
作者单位 | Key Laboratory for High Temperature & High Pressure Study of the Earth’s Interior, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, 550081, China |
推荐引用方式 GB/T 7714 | Sen Lin;Heping Li;Can Cui. Electrochemical Studies on the Corrosion of Electrically Conductive Sulfide Minerals in High Pressure Hydrothermal Fluids - a Case Study From Pyrite[J]. International Journal of Electrochemical Science,2017,12(1):610-617. |
APA | Sen Lin;Heping Li;Can Cui.(2017).Electrochemical Studies on the Corrosion of Electrically Conductive Sulfide Minerals in High Pressure Hydrothermal Fluids - a Case Study From Pyrite.International Journal of Electrochemical Science,12(1),610-617. |
MLA | Sen Lin;Heping Li;Can Cui."Electrochemical Studies on the Corrosion of Electrically Conductive Sulfide Minerals in High Pressure Hydrothermal Fluids - a Case Study From Pyrite".International Journal of Electrochemical Science 12.1(2017):610-617. |
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