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A Type 2-8 High Pressure Loading Device for In Situ Neutron Diffraction

A loading device and neutron technology, applied in the direction of material analysis, measuring devices, instruments, etc. using wave/particle radiation, can solve problems such as inability to obtain experimental results, neutron signal attenuation, etc.

Active Publication Date: 2021-12-07
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional 6-8 type press can meet the requirements of large sample volume and high pressure at the same time, but because the large-volume secondary anvil material will greatly attenuate the neutron signal, effective experimental results cannot be obtained, and it cannot be directly applied to neutron superior

Method used

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  • A Type 2-8 High Pressure Loading Device for In Situ Neutron Diffraction
  • A Type 2-8 High Pressure Loading Device for In Situ Neutron Diffraction
  • A Type 2-8 High Pressure Loading Device for In Situ Neutron Diffraction

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Embodiment

[0030] Such as figure 1 As shown, this embodiment provides a 2-8 type high-pressure loading device for in-situ neutron diffraction, including a pressure block, a guide block, a secondary anvil, and a pressure transmission medium arranged in sequence from the outside to the inside, wherein, As shown in 9, a pressure groove is provided in the middle of the pressure block, and the guide block is arranged in the pressure groove. One end of the guide block is provided with a square groove, and the inner wall of the groove is provided with an inclined guide surface. The square grooves of the two guide blocks are opposite to each other. Set to form a first-level cavity; one end of the pressurizing block is provided with a pressurizing groove matching the size and shape of the outside of the guide block, and the guide block is arranged in the pressurizing groove; figure 2 As shown, the secondary anvil is obtained by cutting off two corners that are symmetrical to the center point of ...

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Abstract

The invention discloses a 2-8 type high-pressure loading device for in-situ neutron diffraction based on the 6-8 type pressurization principle. The guide block is provided with a groove with a guide surface, and two opposite guide A secondary booster unit is placed in the groove of the block, and the secondary booster unit is composed of eight secondary pressure anvils, twelve sealing edges and an octahedral pressure transmission medium. Four T-shaped holes are set on the edge of the guide block, and the device is fixed and pre-tightened with nuts to prevent the sliding between the upper and lower guide blocks and the secondary booster unit when the device is placed on the pressurized platform, which will affect the centering of the experiment sex. The invention can generate high-temperature and high-pressure sample environment and use neutron diffraction for in-situ observation. And the pressure at the sample in the pressure transmission medium is calibrated, and the generated high pressure is about 5GPa.

Description

technical field [0001] The invention belongs to the technical field of neutron static high pressure, and in particular relates to a 2-8 type high-pressure loading device for in-situ neutron diffraction. Background technique [0002] Matter in the process of compression always changes from a low-density state to a high-density state. The phenomenon of continuous compression of matter is everywhere in nature. For example, from the surface of the earth to the center of the earth, the various minerals that make up the earth have undergone a compression process from 0.1MPa to about 360GPa, and the minerals have also changed from the low-density state on the surface. Gradually transform into a high-density state in the center of the earth. Studying the behavior of minerals under high pressure and high temperature is one of the main contents of earth and planetary mineralogy. Due to the irreversibility of the phase transition point of many substances under high temperature and hi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N23/20008G01N23/207
CPCG01N23/20008G01N23/2073
Inventor 贺端威向春江王强
Owner SICHUAN UNIV
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