CN216433755U

CN216433755U - High-strength non-magnetic diamond anvil cell pressing machine

Info

Publication number: CN216433755U
Application number: CN202123098278.1U
Authority: CN
Inventors: 王磊
Original assignee: Langfang Yigu Technology Co ltd
Current assignee: Langfang Yigu Technology Co ltd
Priority date: 2021-12-10
Filing date: 2021-12-10
Publication date: 2022-05-03
Anticipated expiration: 2031-12-10

Abstract

The application discloses a high-strength non-magnetic diamond anvil cell pressing machine which comprises a lower pressure-bearing head, a lower pressure-bearing head and a pair of anvil cells, wherein the lower pressure-bearing head is provided with a disc and coaxial pressing columns arranged on the disc; the disc is uniformly provided with pressurizing parts arranged around the pressing columns in the circumferential direction; the top surface of the pressing column is provided with a mounting surface for bonding a lower pressing anvil; the upper pressure-bearing sleeve is provided with a sample groove and a hollow disc annularly arranged at the notch of the sample groove, the hollow disc is coaxial with the sample groove, and the sample groove is sleeved on the compression column; the hollow disc is uniformly provided with connecting parts arranged around the sample groove in the circumferential direction, and the connecting parts are matched with the pressurizing parts for use; the inner top surface of the sample groove is provided with a mounting surface for bonding an upper anvil; a sample gasket filled with samples is placed between the lower anvil and the upper anvil, the connecting part and the pressurizing part are connected by a pressurizing piece, and the pressure of the press is adjusted by adjusting the pressurizing piece; this press adaptation most magnetism measuring equipment, the structure is small and exquisite, intensity is high, can carry out the no magnetism experiment of superhigh pressure, simple structure and easily realization.

Description

High-strength non-magnetic diamond anvil cell pressing machine

Technical Field

The present disclosure relates generally to the field of magnetic high-pressure measurements, and in particular to a high-strength non-magnetic diamond anvil cell press.

Background

The high-pressure experiment of magnetism needs to adopt the diamond anvil cell press of no magnetism material, and traditional diamond anvil cell press often adopts iron-based structural steel in order to pursue high strength, can't use in magnetic field, especially high-intensity magnetic field environment. At present, high-hardness beryllium copper is adopted as a main material of a non-magnetic press, but the high toughness and low hardness of copper alloy cannot obtain a higher experimental high-pressure environment, and the increase of the press pressure by increasing the size of the press is limited by the volume of a magnetic measurement cavity. Therefore, there is a need for an improved press structure.

Disclosure of Invention

In view of the above-mentioned drawbacks and deficiencies in the prior art, it would be desirable to provide a non-magnetic diamond anvil cell press that is adaptable to most magnetic measurement devices, compact in structure, high in strength, and capable of performing ultra-high pressure non-magnetic experiments.

In a first aspect, the present application provides a high strength non-magnetic diamond anvil cell press, comprising: the lower pressure bearing head is provided with a disc and a pressing column arranged on the disc, and the pressing column and the disc are coaxial; the disc is uniformly provided with pressing parts arranged around the pressing columns in the circumferential direction; the top surface of the pressing column is provided with a mounting surface for bonding a lower pressing anvil;

the upper pressure-bearing sleeve is provided with a sample groove and a hollow disc annularly arranged at the notch of the sample groove, the hollow disc and the sample groove are coaxial, and the sample groove is sleeved on the compression column; the hollow disc is uniformly provided with connecting parts arranged around the sample groove in the circumferential direction, and the connecting parts are matched with the pressurizing part for use; the inner top surface of the sample groove is provided with a mounting surface for bonding an upper anvil;

a sample gasket is arranged between the lower anvil and the upper anvil, the connecting part and the pressurizing part are connected by a pressurizing piece, and the pressure of the press is adjusted by adjusting the pressurizing piece.

According to the technical scheme provided by the embodiment of the application, the center of the sample gasket is provided with a circular through hole, and the diameter of the through hole is consistent with the diameter of the anvil faces of the upper anvil and the lower anvil.

According to the technical scheme provided by the embodiment of the application, a conical through hole is formed in the center of the lower bearing head.

According to the technical scheme provided by the embodiment of the application, a conical hole is formed in the center of the upper anvil mounting surface.

According to the technical scheme provided by the embodiment of the application, the disc is provided with the protection parts, the protection parts are symmetrically arranged on two sides of the pressurizing part by taking the symmetric axis of the pressurizing part as the center, and the protection parts are used for installing the protection parts.

According to the technical scheme provided by the embodiment of the application, two observation ports are oppositely arranged on the outer side of the sample groove and are tangent to the mounting surface of the upper anvil.

According to the technical scheme provided by the embodiment of the application, a buffer piece is arranged between the pressurizing piece and the upper pressure-bearing sleeve, and is provided with a middle hole matched with the compression column for use; and the buffer connecting part matched with the pressurizing part for use is uniformly arranged on the buffer part along the circumferential direction.

According to the technical scheme provided by the embodiment of the application, a gasket is arranged between the pressurizing piece and the buffer piece, and is of a circular ring structure; and gasket connecting parts matched with the pressurizing parts for use are uniformly arranged on the gaskets along the circumferential direction.

According to the technical scheme provided by the embodiment of the application, the material of the lower pressure bearing head and the upper pressure bearing sleeve is high-strength non-magnetic nickel-chromium-aluminum alloy.

To sum up, this application is specific to disclose a specific structure of high strength no magnetism diamond anvil cell press. The technical scheme specifically designs a lower pressure-bearing head and an upper pressure-bearing sleeve which are matched for use; the lower pressure bearing head is provided with a disc and a pressing column arranged on the disc, and the pressing column and the disc are coaxial; the disc is uniformly provided with pressing parts arranged around the pressing column in the circumferential direction; the top surface of the pressing column is provided with a mounting surface for bonding a lower pressing anvil; the upper pressure-bearing sleeve is provided with a sample groove and a hollow disc annularly arranged at the notch of the sample groove, the hollow disc and the sample groove are coaxial, and the sample groove is sleeved on the compression column; the hollow disc is uniformly provided with connecting parts arranged around the sample groove in the circumferential direction, and the connecting parts are matched with the pressurizing parts for use; the inner top surface of the sample groove is provided with a mounting surface for bonding an upper anvil; after the pressing column is inserted into the sample groove, a sample gasket filled with a sample is placed between the lower anvil and the upper anvil, the connecting part and the pressurizing part are connected by using a pressurizing piece, and the pressure of the press is adjusted by adjusting the pressurizing piece; this press adaptation the majority magnetism measuring equipment, the structure is small and exquisite, intensity is high, can carry out the nonmagnetic experiment of superhigh pressure, simple structure and easily realization.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:

FIG. 1 is a schematic view of the overall structure of a high strength non-magnetic diamond anvil cell press provided herein;

FIG. 2 is a schematic view of a disassembled structure of a high strength non-magnetic diamond anvil cell press according to the present application;

fig. 3 is a schematic structural view of a lower pressure-bearing head of the present application;

fig. 4 is a schematic structural view of the upper pressure-bearing sleeve of the present application.

Reference numbers in the figures: 1. a lower pressure bearing head; 2. an upper pressure-bearing sleeve; 3. pressing the column; 4. a sample tank; 5. a pressurization part; 6. pressing the anvil downwards; 7. pressing the anvil upwards; 8. a connecting portion; 9. a sample pad; 10. a pressing member; 11. a tapered through hole; 12. a tapered hole; 13. a protection part; 14. a protective member; 15. an observation port; 16. a buffer member; 17. and (7) a gasket.

Detailed Description

The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

Example one

Referring to fig. 1, a schematic diagram of an embodiment of a high-strength non-magnetic diamond anvil cell press includes a lower pressure head 1 having a disk and a pressing column 3 disposed on the disk, wherein the pressing column 3 is coaxial with the disk; the disc is uniformly provided with pressurizing parts 5 arranged around the compression columns 3 in the circumferential direction; the top surface of the pressing column 3 is provided with a mounting surface for bonding a lower anvil 6;

the upper pressure-bearing sleeve 2 is provided with a sample groove 4 and a hollow disc annularly arranged at the notch of the sample groove 4, the hollow disc and the sample groove 4 are coaxial, and the sample groove 4 is sleeved on the compression column 3; the hollow disc is uniformly provided with connecting parts 8 arranged around the sample tank 4 in the circumferential direction, and the connecting parts 8 are matched with the pressurizing part 5; the inner top surface of the sample groove 4 is provided with a mounting surface for bonding an upper anvil 7;

a sample gasket 9 filled with a sample at the central circular hole position is arranged between the lower anvil 6 and the upper anvil 7; the pressing member 10 is, for example, a pressing screw, the pressing portion 5 is, for example, a pressing screw hole, the connecting portion 8 is, for example, a through hole, the pressing member 10 is screwed to the pressing portion 5 through the connecting portion 8, and the pressing force of the press is adjusted by adjusting the pressing member 10.

Adhering an upper anvil 7 and a lower anvil 6 by an optical microscope to align the anvil surfaces of the upper anvil and the lower anvil, wherein the deviation cannot exceed +/-0.002 mm, and preferably low-temperature epoxy resin is used as an adhesion medium; when the compression column 3 of the lower pressure bearing head 1 is inserted into the sample groove 4 of the upper pressure bearing sleeve 2, the direct fit clearance of the two is less than 0.02 mm.

As shown in fig. 1 and 2, the sample pad 9 has a circular through hole in the center, the diameter of which is the same as the diameter of the anvil faces of the upper anvil 7 and the lower anvil 6, and the anvil faces of the upper anvil 7 and the lower anvil 6 are fitted into the holes in the pad to form a metal seal.

As shown in fig. 3 and 4, a tapered through hole 11 is provided at a central position of the lower pressure bearing head 1; a tapered hole 12 provided at the center of the mounting surface of the upper anvil 7; in the optical measurement, the tapered through hole 11 is used as an incident hole of light for emitting incident light, and the tapered hole 12 is used as an emergent hole of light for a detector to receive emergent signals; two observation ports 15 are oppositely arranged on the outer side of the sample groove 4, are tangent to the mounting surface of the upper anvil 7 and are used for observing the contact condition of the upper anvil 7 and the lower anvil 6 with the sample gasket 9 during mounting and debugging.

As shown in fig. 1 and 2, the protection parts 13 are provided on the disk of the lower pressure head 1, symmetrically provided on both sides of the pressing part 5 with the symmetrical axis of the pressing part 5 as the center, and used for installing protection parts 14 to prevent the upper anvil 7 and the lower anvil 6 from colliding due to misoperation during installation and debugging, the protection parts 13 are for example protection screw holes, and the protection parts 14 are for example protection jackscrews; a buffer 16, arranged between the pressure element 10 and the upper pressure-bearing sleeve 2, having a central hole for cooperating with the compression leg 3; the buffer piece 16 is uniformly provided with buffer connecting parts matched with the pressurizing pieces 10 in the circumferential direction; the buffer 16 can be used for homogenizing the pressure distribution of the press in the pressurizing and pressure-releasing process, so that the pressure mutation in the pressure loading and unloading process is prevented; a gasket 17, which is arranged between the pressure member 10 and the buffer member 16 and has a circular ring structure; gasket connecting parts matched with the pressurizing piece 10 are uniformly arranged on the gasket 17 along the circumferential direction; the gasket 17 enables the press 10 to be non-slip fastened during the pressing process.

As shown in fig. 2, the disc of the lower pressure head 1 has, for example, an outer diameter of 23mm and a height of 5 mm; the compression column 3 of the lower pressure bearing head 1 has a height of 16-30 mm, preferably 20mm, and a diameter of 4-10 mm, preferably 8mm, for example; the hollow disc of the upper pressure-bearing sleeve 2 has an outer diameter of 23mm, for example; the sample groove 4 of the upper pressure-bearing sleeve 2 has a groove depth of 20-30 mm, for example; the lower anvil 6 and the upper anvil 7 are, for example, 16-edge cutting conical diamond anvils, and the size of the top anvil surface is 15-100 um (micrometers); the sample pad 9 is, for example, a circular metal sheet with a thickness of 0.2 to 0.8mm, and the material of the sample pad may be T301, a rhenium sheet, a tungsten sheet, a beryllium copper sheet, and the like, preferably a beryllium copper sheet; the four pressurizing parts 5 are, for example, pressurizing threaded holes of type M3; the connecting portion 8 is, for example, a through hole having a diameter of 4 mm; the diameter of the conical through hole 11 such as a hole tip is 1mm, and the angle is 15 degrees; the tapered hole 12, for example, has a hole tip diameter of 1mm and a hole taper of 90 degrees; the protection portion 13 is, for example, a protection threaded hole of model M4; the observation port 15 has a window opening angle of 90-140 degrees, preferably 120 degrees, and a height of 5 mm; the buffer piece 16 is, for example, a labyrinth disc spring made of beryllium copper, the thickness of the buffer piece is 5-15 mm, preferably 8mm, and the size of a middle hole is matched with the outer diameter of the cylindrical boss of the upper pressure-bearing sleeve 2; the gasket 17 is made of beryllium copper, for example.

The lower pressure-bearing head 1 and the upper pressure-bearing sleeve 2 are made of high-strength non-magnetic nickel-chromium-aluminum alloy, the yield strength of the high-strength non-magnetic nickel-chromium-aluminum alloy exceeds 2000MPa, the heat treatment hardness of the high-strength non-magnetic nickel-chromium-aluminum alloy exceeds 58HRC, the high-strength non-magnetic nickel-chromium-aluminum alloy is used as a material of a press, the integral ultimate strength of the press is improved, an ultrahigh pressure environment of more than 200GPa is easily obtained, the experimental upper limit of magnetic high pressure is improved, and the specially designed structure and size are suitable for most magnetic measurement equipment.

The experimental example data are as follows:

1. the diamond lower anvil 6 and the diamond upper anvil 7 with 50um (micrometer) anvil surfaces are adopted, the outer diameter of a disc of the lower pressure bearing sleeve 1 is 23mm, the height of the pressure column 3 is 16mm, the diameter of the pressure column is 6mm, the depth of the sample groove 4 is 16mm, and the highest pressure of 100GPa can be realized.

2. The diamond lower anvil 6 and the diamond upper anvil 7 with 20um (micron) anvil surfaces are adopted, the outer diameter of a disc of the lower pressure bearing sleeve 1 is 23mm, the height of the pressure column 3 is 20mm, the diameter is 8mm, the depth of the sample groove 4 is 20mm, and the highest pressure of 210GPa can be realized.

3. The diamond lower anvil 6 and the diamond upper anvil 7 with 50um (micron) anvil surfaces are adopted, the outer diameter of a disc of the lower pressure bearing sleeve 1 is 23mm, the height of the pressure column 3 is 20mm, the diameter is 5mm, the depth of the sample groove 4 is 20mm, and the highest pressure of 150GPa can be realized.

The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.

Claims

1. The utility model provides a high strength does not have magnetism diamond anvil cell press which characterized in that includes:

a lower pressure bearing head (1) having a disc and a compression leg (3) disposed on the disc, the compression leg (3) and the disc being coaxial; the disc is uniformly provided with pressurizing parts (5) arranged around the compression columns (3) in the circumferential direction; the top surface of the pressing column (3) is provided with a mounting surface for bonding a lower pressing anvil (6);

the upper pressure-bearing sleeve (2) is provided with a sample groove (4) and a hollow disc annularly arranged at the notch of the sample groove (4), the hollow disc and the sample groove (4) are coaxial, and the sample groove (4) is sleeved on the compression column (3); the hollow disc is uniformly provided with connecting parts (8) arranged around the sample groove (4) in the circumferential direction, and the connecting parts (8) are matched with the pressurizing part (5) for use; the inner top surface of the sample groove (4) is provided with a mounting surface for bonding an upper anvil (7);

a sample gasket (9) is arranged between the lower pressing anvil (6) and the upper pressing anvil (7), the connecting part (8) and the pressing part (5) are connected by a pressing part (10), and the pressure of the press is adjusted by adjusting the pressing part (10).

2. The high strength non-magnetic diamond anvil cell press of claim 1, wherein: the sample pad (9) has a circular through hole in the center, the diameter of which is identical to the diameter of the anvil faces of the upper anvil (7) and the lower anvil (6).

3. The high strength non-magnetic diamond anvil cell press of claim 1, wherein: the center position of the lower bearing head (1) is provided with a conical through hole (11).

4. The high strength non-magnetic diamond anvil cell press of claim 1, wherein: and a conical hole (12) is formed in the center of the mounting surface of the upper anvil (7).

5. The high strength non-magnetic diamond anvil cell press of claim 1, wherein: the disc is provided with protection parts (13) which are symmetrically arranged on two sides of the pressurizing part (5) by taking a symmetrical shaft of the pressurizing part (5) as a center, and the protection parts are used for installing protection parts (14).

6. The high strength non-magnetic diamond anvil cell press of claim 1, wherein: two observation ports (15) are oppositely arranged on the outer side of the sample groove (4) and are tangent to the mounting surface of the upper anvil (7).

7. The high strength non-magnetic diamond anvil cell press of claim 1, wherein: a buffer piece (16) is arranged between the pressurizing piece (10) and the upper pressure bearing sleeve (2) and is provided with a middle hole matched with the compression column (3) for use; and the buffer piece (16) is uniformly provided with buffer connecting parts matched with the pressurizing piece (10) in use along the circumferential direction.

8. The high strength non-magnetic diamond anvil cell press of claim 7, wherein: a gasket (17) is arranged between the pressurizing piece (10) and the buffer piece (16), and is of a circular ring structure; and gasket connecting parts matched with the pressurizing parts (10) are uniformly arranged on the gasket (17) along the circumferential direction.

9. The high strength non-magnetic diamond anvil cell press of claim 1, wherein: the lower pressure-bearing head (1) and the upper pressure-bearing sleeve (2) are made of high-strength non-magnetic nickel-chromium-aluminum alloy.