Method for manufacturing a high-pressure material that can be detached from a high-pressure device.

Abstract

The present invention relates to the field of materials, and specifically provides a method for producing a material in a high-pressure state that can be removed from a high-pressure apparatus, the method including putting a carbon material and a target material into a high-pressure apparatus, and obtaining a diamond pressurized capsule containing the material in a high-pressure state inside through high-temperature and high-pressure treatment. The present invention can encapsulate the material in a high-pressure state (including the substance and its pressurized state) inside the diamond pressurized capsule by mixing the carbon material and the target material and putting it into the sample chamber of a conventional high-pressure apparatus, and converting the carbon material into diamond using high-temperature and high-pressure treatment. The diamond pressurized capsule can be removed from the conventional high-pressure apparatus and maintain the high-pressure state inside, so that the material in a high-pressure state can be studied and used in a normal pressure environment.

Description

Technical Field

[0001] The present invention relates to the fields of high pressure and materials, and specifically to a method for manufacturing materials in a high-pressure state that can be detached from a high-pressure device.

[0002] [Cross-reference] This application claims priority based on Chinese Patent Application No. 202210515692.8, titled "Method for Manufacturing Materials in a High-Pressure State Detachable from a High-Pressure Device", filed on May 11, 2022, and incorporates the entire disclosure thereof herein by reference.

Background Art

[0003] Extremely high pressure (referring to a physical environment where the pressure is greater than 1 atmosphere, hereinafter abbreviated as "high pressure") can significantly change the structure of materials and their physicochemical properties. Many previous studies have shown that by utilizing high pressure, many new materials and excellent properties that cannot be obtained under normal pressure can be obtained. For example, under high pressure, significant improvements in the thermoelectric properties, optoelectronic properties, luminescent properties, superconducting properties, etc. of materials can be achieved. In addition to conventional solid-phase materials, substances that are gaseous or liquid under normal pressure can also be converted into solid state under high pressure. Many advancements have also been made in high-pressure research on these systems. For example, there is a possibility that hydrogen can be metallized under extremely high pressure, hydrogen sulfide compounds with a superconducting temperature reaching 203K, carbonaceous hydrogen sulfide with a superconducting temperature close to room temperature (15°C), polymeric nitrogen with a high energy density synthesized under high temperature and high pressure, etc. have been discovered.

[0004] However, these new materials synthesized under high pressure and the excellent properties obtained exist only in the high-pressure environment, and reversible changes often occur after decompression, and they cannot be stored under normal pressure in many cases. On the other hand, the stable generation and maintenance of high pressure depend on high-pressure devices such as diamond anvils and large-volume presses. Therefore, many new materials synthesized under high pressure cannot be detached from the high-pressure device and exist independently, so they cannot be conveniently studied and put into practical use.

Summary of the Invention

[0005] The object of the present invention is to provide a method for manufacturing a high-pressure material that can be detached from a high-pressure device. By synthesizing a diamond pressurized capsule, the present invention makes it possible to detach the material from conventional high-pressure devices and permanently store the high-pressure structure, physical properties, and pressure of the material in the diamond pressurized capsule, enabling the use of the high-pressure material at normal pressure.

[0006] The present invention provides a method for producing a material under high pressure that can be removed from a high-pressure device, which includes placing a carbon material and a target material into a high-pressure device, subjecting them to high-temperature and high-pressure treatment, and obtaining a diamond pressurized capsule containing the material under high pressure inside.

[0007] This invention allows for the sealing of a material under high pressure (including the substance and its pressurized state) inside a diamond pressurized capsule by mixing a carbon material and a target material, placing them in the sample chamber of a conventional high-pressure device, and converting the carbon material into diamond through high-temperature and high-pressure processing. This diamond pressurized capsule can exist independently of the conventional high-pressure device and maintain the high-pressure state inside, thereby enabling the study and use of high-pressure materials in an atmospheric pressure environment. By manufacturing a diamond pressurized capsule, this invention solves the problem that the pressurized state, high-pressure structure, and physical properties of materials cannot be preserved after they have left the high-pressure device, thereby enabling the study and use of high-pressure materials in an atmospheric pressure environment.

[0008] In some embodiments of the present invention, the pressure of the high-temperature, high-pressure treatment is 5 to 100 GPa, and the temperature is 400 to 3000°C.

[0009] More preferably, the pressure of the high-temperature, high-pressure treatment is 25 to 50 GPa, the temperature is 1500 to 2000°C, and the holding time is 1 to 20 minutes.

[0010] In some embodiments of the present invention, the carbon material is one or more of the following: graphite, carbon black, glassy carbon, graphene, fullerene, carbon nanotube, amorphous carbon, diamond, and adamantane.

[0011] In some embodiments of the present invention, the target material is a gas, liquid, or solid.

[0012] In some embodiments of the present invention, part or all of the target material is encased in the carbon material.

[0013] Specifically, by controlling the porous microstructure of the carbon material (some carbon materials, such as glassy carbon, contain sealed pores inside, and the target material enters these pores through high-pressure diffusion and further fills them), or by controlling the volume ratio of the carbon material to the target material involved in the mixing (the volume of the carbon material is much larger than that of the target material, for example, the volume ratio is 30:1), it is possible to ensure that the carbon material encases the target material.

[0014] In some embodiments of the present invention, the high-pressure generating device is a diamond anvil, a large-capacity press, and other equipment capable of generating high temperature and high pressure.

[0015] According to the method for producing a material under high pressure that can be detached from a high-pressure device provided by the present invention, the carbon material and the target material are mixed and then placed in the sample chamber of the high-pressure device, or the carbon material and the target material are placed in the sample chamber of the high-pressure device and then mixed.

[0016] According to the method for manufacturing a high-pressure material that can be detached from a high-pressure device provided by the present invention, the high-pressure material is a state in which the target material is placed at a pressure greater than 1 atmosphere. That is, the target material is the state in which the high-pressure material is at normal pressure.

[0017] In a preferred embodiment of the present invention, a method for manufacturing a high-pressure material that can be detached from the high-pressure device is: A process of placing carbon material and target material into the sample chamber of a high-pressure device and then mixing them, or a process of placing a mixture of carbon material and target material into the sample chamber of a high-pressure device, A process of applying high temperature and high pressure treatment to a carbon material and a target material at a pressure of 5 to 100 GPa and a temperature of 400 to 3000°C, The process involves obtaining a diamond pressurized capsule containing a material under high pressure inside after temperature reduction and depressurization. Includes.

[0018] In this specification, terms such as "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" mean that the specific features, structures, materials, or characteristics described in relation to that embodiment or example are included in at least one embodiment or example of the embodiment of the present invention. In this specification, the general expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in an appropriate manner in any one or more embodiments or examples. In addition, where there is no contradiction, those skilled in the art can combine and combine different embodiments or examples and features of different embodiments or examples described herein.

[0019] This invention provides a method for manufacturing a high-pressure material that can be detached from a high-pressure device. By manufacturing a diamond pressurized capsule containing a sample under high pressure, the problem of not being able to preserve the pressurized state, high-pressure structure, and physical properties of a material after detaching it from a high-pressure device is solved, thereby enabling research and use of high-pressure materials in a normal pressure environment. [Brief explanation of the drawing]

[0020] [Figure 1] This is the X-ray diffraction pattern of a diamond pressurized capsule containing the high-pressure material obtained in Example 1 of the present invention. [Figure 2]An image of a transmission electron microscope of a diamond anvil cell containing the material in a high-pressure state obtained in Example 1 of the present invention. The high-pressure argon crystallites are surrounded by a frame. [Figure 3] An X-ray diffraction pattern of a diamond anvil cell containing the material in a high-pressure state obtained in Example 2 of the present invention. [Figure 4] An energy spectrum of a scanning electron microscope of a diamond anvil cell containing the material in a high-pressure state obtained in Example 3 of the present invention.

Mode for Carrying Out the Invention

[0021] In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be described clearly and completely below. It is clear that the described embodiments are some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without creative labor are all included in the scope that the present invention intends to protect.

[0022] Unless otherwise specified, all raw materials according to the embodiments of the present invention are available from commercial routes.

[0023] The vitreous carbon used in the following examples is manufactured by Alfa Aesar, and the graphite powder, fullerene powder, sodium chloride powder, and potassium chloride powder are manufactured by Aladdin.

[0024] Example 1 This example provides a method for manufacturing a material in a high-pressure state that can be detached from a high-pressure device. The specific steps are as follows.

[0025] Glassy carbon was cut into small pieces with a length and width of 50 μm each and a thickness of 15 μm, and placed in the sample chamber of a diamond anvil. Argon gas was introduced into the sample chamber using a high-pressure gas filling device, and the pressure of the high-pressure gas filling device was 21,000 psi. The pressure of the diamond anvil was increased to 50 GPa, and it was heated to 1800°C and held for 3 minutes to obtain a diamond pressurized capsule containing high-pressure crystalline argon.

[0026] X-ray diffraction using synchrotron radiation was performed on the synthesized sample, and the results are shown in Figure 1. It was revealed that the sample contained diamond and high-pressure crystalline argon with a lattice constant of 4.2 A (corresponding to the pressure at which high-pressure argon is placed, which is approximately 22 GPa). Analysis of the synthesized diamond-pressurized capsule sample using a high-resolution electron microscope was performed, and the results are shown in Figure 2. It was revealed that the sample contained diamond and high-pressure crystalline argon with an average interplanar spacing of approximately 2.5 A between the (111) planes encased in diamond.

[0027] Example 2 This embodiment provides a method for manufacturing a high-pressure material that can be detached from a high-pressure device, and the specific steps are as follows.

[0028] Glassy carbon was cut into small pieces with a length and width of 50 μm each and a thickness of 20 μm, and placed in the sample chamber of a diamond anvil. Liquid argon was injected into the sample chamber of the high-pressure device at atmospheric pressure using a cryogenic apparatus. Subsequently, the pressure of the diamond anvil was increased to 35 GPa, heated to 1900°C and held for 1 minute, to obtain a diamond pressurized capsule sample containing high-pressure crystalline argon.

[0029] The results of X-ray diffraction using synchrotron radiation on the synthesized sample are shown in Figure 3, revealing that the sample contains diamond and high-pressure crystalline argon.

[0030] Example 3 This embodiment provides a method for manufacturing a high-pressure material that can be detached from a high-pressure device, and the specific steps are as follows.

[0031] Glassy carbon was cut into small pieces with a length and width of 40 μm each and a thickness of 10 μm, and placed in the sample chamber of a diamond anvil. Neon gas was introduced into the sample chamber using a high-pressure gas filling device, and the pressure of the high-pressure gas filling device was 23,000 psi. The pressure of the diamond anvil was increased to 49 GPa, and it was heated to 1700°C and held for 1 minute to obtain a diamond pressurized capsule containing high-pressure crystalline neon.

[0032] The results of component analysis of the synthesized sample using energy spectroscopy with a scanning electron microscope are shown in Figure 4, revealing that the sample mainly contains two elements: carbon and neon.

[0033] Example 4 This embodiment provides a method for manufacturing a high-pressure material that can be detached from a high-pressure device, and the specific steps are as follows.

[0034] Graphite powder (99.95% purity) and sodium chloride powder (99.99% purity) were uniformly mixed in a molar ratio of 30:1, pressed into small pieces approximately 100 μm in diameter and 20 μm thick, and placed in the sample chamber of a diamond anvil. Magnesium oxide sheets approximately 10 μm thick were placed above and below the sample. The pressure in the diamond anvil was increased to 40 GPa, heated to 1800°C and held for 5 minutes to obtain a diamond pressurized capsule containing high-pressure sodium chloride.

[0035] The diamond pressurized capsule, which contains high-pressure sodium chloride, can be removed from the high-pressure generator, making it convenient for the research and use of high-pressure sodium chloride.

[0036] Example 5 This embodiment provides a method for manufacturing a high-pressure material that can be detached from a high-pressure device, and the specific steps are as follows.

[0037] Fullerene powder (99.9% purity) and potassium chloride powder (99.99% purity) were uniformly mixed in a 2:1 molar ratio, pressed into small pieces approximately 100 μm in diameter and 20 μm thick, and placed in the sample chamber of a diamond anvil. Magnesium oxide sheets approximately 10 μm thick were placed above and below the sample. The pressure in the diamond anvil was increased to 25 GPa, heated to 1500°C and held for 10 minutes to obtain a diamond pressurized capsule containing high-pressure potassium chloride.

[0038] The diamond pressurized capsule containing high-pressure potassium chloride can be removed from the high-pressure device, making it convenient for research and use of high-pressure potassium chloride.

[0039] Finally, the above embodiments are merely for illustrating the technical ideas of the present invention and are not intended to limit them. Furthermore, although the present invention has been described in detail with reference to the above embodiments, the technical ideas described in each of the above embodiments may be modified, or some of their technical features may be substituted, and those skilled in the art will understand that the essence of the technical ideas obtained by such modifications or substitutions will not deviate from the spirit and scope of the technical ideas of each embodiment of the present invention. [Industrial applicability]

[0040] The present invention provides a method for manufacturing a high-pressure material that can be detached from a high-pressure device, the method comprising placing a carbon material and a target material into a high-pressure device, and obtaining a diamond pressurized capsule containing the high-pressure material through high-temperature and high-pressure treatment. The present invention allows for the sealing of a high-pressure material (including the substance and its pressurized state) inside a diamond pressurized capsule by mixing a carbon material and a target material, placing them in the sample chamber of a conventional high-pressure device, and converting the carbon material into diamond using high-temperature and high-pressure treatment. Since the diamond pressurized capsule can exist detached from a conventional high-pressure device and maintain the high-pressure state inside, the high-pressure material can be studied and used in an atmospheric pressure environment, offering relatively good economic value and prospects for use.

Claims

1. The process includes placing a carbon material and a target material into a high-pressure device, and after high-temperature and high-pressure treatment, obtaining a diamond pressurized capsule containing material at a pressure higher than 1 atmosphere inside. The high-pressure device is a diamond anvil cell or a large-capacity press. The carbon material is glassy carbon and contains a sealed porous structure inside for enclosing the target material. The target material is a gas or liquid at 1 atmosphere. The pressure of the aforementioned high-temperature and high-pressure treatment is 5 to 100 GPa, and the temperature is 400 to 3000°C. A method for manufacturing a material in which the pressure state is higher than 1 atmosphere and which allows for detachment from a high-pressure device.

2. A method for producing a material in which the pressure state at which the material can be released from the high-pressure device is higher than 1 atmosphere, characterized in that the pressure of the high-temperature and high-pressure treatment is 25 to 50 GPa, the temperature is 1500 to 2000°C, and the holding time is 1 to 20 minutes, as described in claim 1.

3. A method for producing a material at a pressure higher than 1 atmosphere that allows it to be released from a high-pressure device, characterized in that the carbon material and the target material are placed in the sample chamber of the high-pressure device, the target material is allowed to enter the pores of the carbon material by diffusion due to the pressure generated by the high-pressure device, the pores are filled with the material under high pressure, and the carbon material completely encloses the target material under high pressure.

4. The method described above is A process in which a carbon material and a target material are placed in the sample chamber of a high-pressure device, the target material is diffused by the pressure generated by the high-pressure device into the pores of the carbon material, filling the pores as a high-pressure material, and the carbon material completely envelops the high-pressure target material. A process of applying high temperature and high pressure treatment to a carbon material and a target material at a pressure of 5 to 100 GPa and a temperature of 400 to 3000°C, The process involves obtaining a diamond pressurized capsule containing a material with a pressure higher than 1 atmosphere inside after temperature reduction and depressurization. A method for producing a material that can be detached from a high-pressure device according to claim 1, characterized by including the following:

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