High-pressure, High-temperature Deformation Experiment Using the New Generation Griggs-type Apparatus
High-pressure, High-temperature Deformation Experiment Using the New Generation Griggs-type Apparatus
复制标题
新一代格里格斯型装置的高压高温变形实验
DOI：
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发表时间：
2018
期刊：
影响因子：
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通讯作者：
A. Schubnel
中科院分区：
文献类型：
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作者：
J. Précigout;H. Stünitz;Y. Pinquier;R. Champallier;A. Schubnel
为了研究深层地质过程，理想情况下应在高压（> 0.5 GPa）和高温（> 300 °C）下测试岩石变形。然而，由于当前固体压力介质装置的低应力分辨率，高分辨率测量如今被限制于气体压力介质装置中的低压变形实验。本文介绍了新一代固体介质活塞-圆筒（“格里格型”）装置。这种新设备能够进行高达5 GPa的高压变形实验，并设计用于适应内部测力传感器，为建立高压流变学的技术基础提供了可能。本文提供了基于视频的详细文件的程序（使用“传统”的固体盐组件）进行高压，高温实验与新设计的格里格型设备。给出了卡拉拉大理石在700 °C、1.5 GPa、10-5 s-1条件下的典型变形结果。相关的应力-时间曲线说明了格里格斯型实验的所有步骤，从增加压力和温度到变形停止时的样品淬火。结合未来的发展，Griggs装置的关键步骤和局限性进行了讨论。
In order to address geological processes at great depths, rock deformation should ideally be tested at high pressure (> 0.5 GPa) and high temperature (> 300 °C). However, because of the low stress resolution of current solid-pressure-medium apparatuses, high-resolution measurements are today restricted to low-pressure deformation experiments in the gas-pressure-medium apparatus. A new generation of solid-medium piston-cylinder ("Griggs-type") apparatus is here described. Able to perform high-pressure deformation experiments up to 5 GPa and designed to adapt an internal load cell, such a new apparatus offers the potential to establish a technological basis for high-pressure rheology. This paper provides video-based detailed documentation of the procedure (using the "conventional" solid-salt assembly) to perform high-pressure, high-temperature experiments with the newly designed Griggs-type apparatus. A representative result of a Carrara marble sample deformed at 700 °C, 1.5 GPa and 10-5 s-1 with the new press is also given. The related stress-time curve illustrates all steps of a Griggs-type experiment, from increasing pressure and temperature to sample quenching when deformation is stopped. Together with future developments, the critical steps and limitations of the Griggs apparatus are then discussed.