Silicon-carbon-graphite opposite-vertex anvil high-pressure vessel

Abstract

The present invention relates to a silundum vertically opposite anvil high pressure container. Said container is formed from silundum vertically opposite pressure anvil sample unit, pressure anvil sample unit and hanging pressurization device, in which the vertically opposite pressure anvil adopts monocrystal silundum, and the periphery of the pressure anvil can be equipped ornot equipped with supporting ring, and the pressure anvil can be one kind of concave anvil type silundum pressure anvil, and in the pressurization device a disk spring is set, the described high-pressure container can make pressure anvil produce ultrahigh pressure and can allow it to use and measure sample with large volume. Said container has the force-measuring function, before experimental measurement it can be used for predicting value of applied pressure.

Description

[0001] The invention relates to a counter-anvil high-pressure vessel adopting a new material and structure, especially a silicon carbide counter-anvil high-pressure vessel. The high-pressure vessel can generate a pressure of 0.5-50GPa (1GPa≈10,000 atmospheric pressure). It can be used to measure the physical properties of materials under ultra-high pressure, and is more suitable for X-ray diffraction, especially the measurement of physical properties of materials in the experimental research of neutron diffraction. Background technique [0002] In the technical field of high-pressure vessels, an anvil-type high-pressure vessel is a high-pressure vessel with simple structure and high pressure. Its basic constituent elements are a pair of anvils with opposite anvil surfaces ( figure 1 ). The sample 4 to be tested is located on the anvil surface of the anvil 1, and its side is surrounded by a gasket 3. The upper and lower anvils and the gasket 3 form a high-pressure chamber. Ex...

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Problems solved by technology

[0008] However, the rigidity of the current high-loaded container is very high. When the container is taken out from the hydraulic press, only a part of the pressure applied by the hydraulic press can often be locked in the container.

The loss of pressure makes the stressed parts loose, causing the sealing between the gasket around the sample and the anvil to decrease, which will lead to the leakage of the gas pressure transmission medium in the high pressure chamber and the failure of the experiment

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