Device for generating ultrahigh pressure

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...

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 prior art, the present invention provides a device for generating ultra-high pressure, which can be used for X-ray and neutron in-situ High pressure setup for characterization experiments

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