Knowledge Management System Of Institute of Geochemistry,CAS
A simple and effective capsule sealing technique for hydrothermal experiments | |
Jun Du; Heping Li; Hongwei Liu; Honglun Chang | |
2020 | |
发表期刊 | American Mineralogist8 |
卷号 | 105期号:8页码:1254–1258 |
摘要 | Capsule sealing has always been a key procedure in hydrothermal experiments to explore the composition and properties of geo-fluids and their influence on various geological processes. Previously reported capsule sealing techniques have primarily focused on either weld-sealing or cold-sealing methods, which have some disadvantages and limitations. Here, we report on a newly developed, simple, and effective capsule sealing technique incorporating operations from the cold-sealing and weld-sealing techniques. The technique includes three steps: first, preparing inner and outer tubes, both with a flat bottom at one end; subsequently, reverse-buckling the tubes to form a preliminary seal; and finally, welding shut the tiny slit at one end of the tubes. The new capsule sealing technique was tested in experiments for fluid inclusion synthesis. Fluid inclusions were successfully synthesized in 10 runs over a range of conditions (800~900 °C, 1~1.5 GPa). Considering the insignificant mass changes recorded and the occurrence of free fluid from the recovered capsules, the new capsule sealing technique was proven to be reliable. The simple and effective capsule sealing technique has the following advantages over the previous techniques. First, the capsule sealing technique is simple, effective, and easy to operate. The technique does not require a capsule body and lid with a complex structure, nor does it require dies or special tools. The critical weld-sealing operation is easier to complete due to the narrow and uniform slit surrounded by more metal, during which loss of volatilization is prevented by the preliminary seal. Second, the capsules can be sealed with uniform thickness and regular shape, prechecked for leakage in an oven, and annealed under high temperature and high pressure with less deformation, which could improve the success rate of experiments. Third, the theoretically required capsule materials can be changed (such as precious metals, alloys, etc.), as can the dimensions required to construct a capsule with the desired size and wall thickness (large volume or thick wall). Thus, sealed capsules are suitable not only for piston cylinders but also for multi-anvil presses and other gas-media or hydrothermal-media apparatus, such as autoclaves and pressure vessels, which means a wider range of temperatures and pressures are accessible and thus more fields of application. |
关键词 | Capsule Sealing cold-sealing weld-sealing hydrothermal Experiments fluid Inclusion Synthesis |
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/42920512-1/10394 |
专题 | 地球内部物质高温高压实验室 |
作者单位 | 1.Key Laboratory of High-Temperature and High-Pressure Study of the Earth’s Interior, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China 2.Key Laboratory of High-Temperature and High-Pressure Study of the Earth’s Interior, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China 3.North China Engineering and Investigation Institute, Shijiazhuang, 050021, China 4.Hebei GEO University, Shijiazhuang, 050031, China |
推荐引用方式 GB/T 7714 | Jun Du; Heping Li; Hongwei Liu; Honglun Chang. A simple and effective capsule sealing technique for hydrothermal experiments[J]. American Mineralogist8,2020,105(8):1254–1258. |
APA | Jun Du; Heping Li; Hongwei Liu; Honglun Chang.(2020).A simple and effective capsule sealing technique for hydrothermal experiments.American Mineralogist8,105(8),1254–1258. |
MLA | Jun Du; Heping Li; Hongwei Liu; Honglun Chang."A simple and effective capsule sealing technique for hydrothermal experiments".American Mineralogist8 105.8(2020):1254–1258. |
条目包含的文件 | ||||||
文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | ||
A simple and effecti(765KB) | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | 浏览 请求全文 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论