Device for generating ultrahigh pressure

A technology of ultra-high pressure and high-pressure components, which is applied in the field of high-pressure devices, can solve the problems of small samples and uneven pressure fields, and achieve the effect of simple structure

Active Publication Date: 2017-10-17
INST OF NUCLEAR PHYSICS & CHEM CHINA ACADEMY OF
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the deficiencies of small sample size and non-uniform pressure field of the anvil high-pressure device commonly used for neutron diffraction in the pri...

Method used

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  • Device for generating ultrahigh pressure
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  • Device for generating ultrahigh pressure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] figure 1 It is the front view of the device for generating ultra-high pressure of the present invention, figure 2 for figure 1 Middle A-A sectional view, image 3 for figure 2 Middle B-B center sectional view, Figure 4 It is a structural schematic diagram of the high-voltage assembly in the present invention, Figure 5 It is a partial schematic diagram of the present invention, that is, a schematic diagram of the structure of the secondary anvil with an arc surface on the outside. exist Figure 1 to Figure 5 Among them, the device for generating ultra-high pressure of the present invention includes a primary anvil I1, a primary anvil II21, eight slider-type secondary anvils, a supporting steel ring 2, a gasket 12, an incident window 5, Exit window 11, thermocouple 7, copper foil 8 and high voltage components. Among them, the secondary anvils include four secondary anvils I3 and four secondary anvils II31 with the same structure, and the end faces 16 of the sec...

Embodiment 2

[0037] The structure of this embodiment is the same as that of Example 1, except that when the sample is subjected to high temperature and high pressure experiments, the material of the secondary anvil is diamond; when it is used for ruby ​​pressure measurement or spectrum measurement, the material of the secondary anvil is Made of transparent aluminum oxide. Bakelite insulation sheets are arranged between the primary anvil I1 and the secondary anvil I3, and between the primary anvil II21 and the secondary anvil II31.

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PUM

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Abstract

The invention discloses a device for generating ultrahigh pressure. The device is capable of carrying out X light diffraction experiment, especially neutron diffraction experiment, is capable of integrating multiple measurement means, such as electrical transportation and spectra. The device comprises a primary pressure cavity, a secondary pressure cavity formed by eight secondary anvils, a sealing pad capable of penetrating through X light or neutron, a high-temperature and high-pressure assembly capable of being put into a space formed by the end surfaces of the anvils and the sealing pad, and a steel ring for supporting the eight secondary anvils, wherein the primary pressure cavity is driven by a belt-type press and formed by upper and lower tungsten carbide anvils; the steel ring is provided with an incident window and an emergent window. The device integrates the advantages of an opposite-anvil small press and a slide block-type multi-anvil large press, has the advantages that the opposite-anvil press is small and flexible and the multi-anvil large press is capable of providing enough lateral support and a relatively large sample size, and is very suitable for integration of in-situ X light/neutron diffraction experiment and measurement means, such as electrical transportation and spectra. The device has the advantages that the generated pressure is high, a large-size sample cavity is formed and multiple in-situ tests can be carried out.

Description

technical field [0001] The invention belongs to the field of high-pressure devices, and in particular relates to a device for generating ultra-high pressure, which can be used for ultra-high pressure loading in neutron diffraction experiments, and for measuring the structure and physical properties of materials under extreme conditions such as high pressure and high temperature. Background technique [0002] The survival and development of high pressure science strongly depend on the experimental techniques for generating high pressure and the in situ measurement of physical quantities under high pressure. Static high-pressure devices mainly include counter-anvil high-pressure devices (including diamond counter-anvil presses and Paris-Edinburgh presses), cylinder-piston presses, double-face presses and multi-face presses with large chambers. In order to facilitate in-situ measurement of X-rays or neutrons, the high-voltage device for the anvil is a common high-voltage device...

Claims

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Application Information

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IPC IPC(8): B01J3/06
CPCB01J3/06
Inventor 房雷鸣李欣倪小林陈喜平谢雷夏元华李昊孙光爱
Owner INST OF NUCLEAR PHYSICS & CHEM CHINA ACADEMY OF
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