Static high pressure diamond anvil cell device suitable for laser dynamic loading experiments

A diamond-to-anvil, dynamic loading technology, applied in the direction of applying stable tension/pressure to test the strength of materials, measuring devices, laser welding equipment, etc. goals, etc.

Active Publication Date: 2018-08-17
中国工程物理研究院上海激光等离子体研究所
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  • Abstract
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Problems solved by technology

According to the laser conditions of the Shenguang-II device and the characteristics of laser dynamic loading, the thickness of the diamond anvil on the laser incident surface should not exceed 200 μm, otherwise, due to the attenuation of the shock wave in the diamond and the influence of side sparse waves, the dynamic loading pressure will be weakened and The range of the shock wave is reduced, and the experimental target cannot be reached

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  • Static high pressure diamond anvil cell device suitable for laser dynamic loading experiments
  • Static high pressure diamond anvil cell device suitable for laser dynamic loading experiments
  • Static high pressure diamond anvil cell device suitable for laser dynamic loading experiments

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Embodiment Construction

[0033] like figure 1 , figure 2 , image 3 and Figure 4 As shown, this embodiment is applicable to the static high pressure diamond counter-anvil device for laser dynamic loading experiment, which device includes a front pressurization chamber 1, a rear pressurization chamber 2 and an anvil sample system 3, the front pressurization The cavity 1 and the rear pressurization cavity 2 are fixedly connected by a pressurization bolt 4, the fixed connection between the front pressurization cavity 1 and the rear pressurization cavity 2 forms a cavity 5, and the pair of anvils The sample system 3 is placed in the chamber 5, and the front pressurization chamber 1 and the rear pressurization chamber 2 are provided with a number of fastening screws 6, through which the anvil sample system 3 is fixed on the chamber 5;

[0034] The anvil sample system 3 includes a front tungsten carbide base 7 and a rear tungsten carbide base 8, and between the front tungsten carbide base 7 and the re...

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Abstract

The invention discloses a static high pressure diamond anvil cell device suitable for laser dynamic loading experiments, the static high pressure diamond anvil cell device comprises a front pressing cavity, a rear pressing chamber and an anvil cell sample system, the front pressing chamber and the rear pressing chambers are fixedly connected by a pressure bolt, the front pressing chamber and the rear pressing chamber enclose a chamber, the anvil cell sample system is placed in the chamber, the front pressing chamber and the rear pressing chamber are respectively provided with a plurality of fastening screws, and the anvil cell sample system is fixed in the chamber by the fastening screws; according to the requirements of the laser dynamic high pressure loading physical experiments, the diamond structure and the assembly process of the new diamond anvil cell device suitable for the laser dynamic loading experiments can be improved, the initial pressure / density of the material can be changed, and the new diamond anvil cell device is used for experimental studies on a material wide-domain state equation. The device enables a liquid such as water or ethanol to be at a pressure of 2 GPaor more at normal temperature and is stable during the experiments.

Description

technical field [0001] The invention belongs to the field of dynamic high-pressure physics research of materials under extreme conditions, and in particular relates to a static high-pressure diamond counter-anvil device suitable for laser dynamic loading experiments. Background technique [0002] The diamond counter-anvil is composed of a pair of diamond counter-anvils and a sealing gasket. Put the sample and pressure measuring ruby ​​into the diamond counter-anvil sealing gasket at the same time, and tighten the pressure anvil. Because the contact surface of the two diamonds is small, the diamond pressure chamber can be pressurized by an external mechanical device to obtain high pressure. The diamond-anvil technique has become an important method for studying the structural properties and phase transitions of materials under extreme static pressure conditions. [0003] The Shenguang-II high-power laser device is the earliest high-power laser device built in China. Many hig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/12G01L1/24B23K26/362
CPCB23K26/361G01L1/24G01N3/12G01N2203/0019G01N2203/0044
Inventor 涂昱淳舒桦叶君建谢志勇王寯越
Owner 中国工程物理研究院上海激光等离子体研究所
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