Multi-stage filleted high-pressure anvil

Abstract

The invention discloses a multi-stage filleted high-pressure anvil and relates to exploration of synthesizing preparation tools for novel superhard materials such as diamond, cubic boron nitride and products thereof, and novel materials which cannot be prepared at normal pressure, and belongs to the technical field of ultra-high pressure. The top of the multi-stage filleted high-pressure anvil has a multi-stage platform structure with fillets; the bottom of the multi-stage filleted high-pressure anvil is a column with fillets; the transition between the top and the bottom is realized by a symmetrical curved surface or a fan-shaped bevel; and the high-pressure anvil is made of steel, hard alloy, a diamond sintered body, a cubic boron nitride sintered body or natural diamond and other high-hardness materials. The defects of structural design of corners and a first-stage platform of the conventional anvil are overcome; the stress concentration effect of the anvil can be reduced; the service life of the anvil can be prolonged; the cavity pressure of hundreds of thousands to millions of atmosphere pressures can be obtained; and the multi-stage filleted high-pressure anvil can be widely applied to an anvil device, a multi-surface ejecting high-pressure device and a multi-stage boosting device, and can meet research requirements of high-pressure physics and high-pressure biology on a matter system at high temperature and high pressure.

Description

technical field [0001] The invention discloses a multi-stage fillet-type high-pressure anvil, which relates to a synthetic preparation tool for exploring new superhard materials such as diamond, cubic boron nitride and its products, and new materials that cannot be prepared under "normal pressure", belonging to ultra-high pressure technology field. Background technique [0002] Since Bridgman, an American high-pressure physicist, successfully designed high-pressure equipment with a pressure above 5GPa, high-pressure physics has made many significant achievements. For example, materials such as diamond and cubic boron nitride have been synthesized under high temperature and high pressure, and the physical properties of many different substances under high pressure have been studied; however, almost all high-pressure research is inseparable from high-pressure sealing devices, and high-pressure anvils are used as high-pressure seals. It is one of the key components of the devi...

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Problems solved by technology

[0004] The object of the present invention is to solve the problem of the high-pressure anvil used in conjunction with an anvil device, a double-sided high-pressure device, a four-sided high-pressure device, a six-sided high-pressure device, and a multi-stage supercharging device under extreme conditions (high temperature and high pressure). The simple one-level structure of the corner has low service life, low cavity pressure and small cavity volume, which cannot meet the requirements of high-pressure physics, geophysics, materials science and high-pressure biology for material systems under ultra-high pressure. research needs

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