In-situ heating device for diamond anvil cell press
By adopting a double-layer heating gasket structure in the diamond anvil press, the problem of space occupied by the heating ring is solved, the uniformity of sample heating and the experimental efficiency are improved, making it suitable for high-temperature and high-pressure experiments.
Patent Information
- Application Number
- CN202422469415.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-12
- Publication Date
- 2025-09-30
- Estimated Expiration
- 2034-10-12
AI Technical Summary
The existing heating ring assembly method of the diamond anvil press hinders the mass spectrometry detection of sample gas, and the traditional heating ring takes up a large space, affecting the experimental efficiency.
The in-situ heating gasket adopts a double-layer heating structure, including a metal gasket base layer, an insulating layer and a heating wire layer, which are integrated between the diamond anvils to provide centralized heating function and avoid the volume occupied by traditional resistance wire heating rings.
It improves the uniformity of sample heating, concentrates the heating power, simplifies the high-temperature and high-pressure experimental process, is suitable for specific experimental needs, and reduces the number of operating steps.
Smart Images
Figure CN223400740U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of in-situ measurement of physical quantities under high temperature and high pressure, and in particular to an in-situ heating device for a diamond anvil cell press. Background Art
[0002] The diamond anvil cell press (DAC) experimental technology has been rapidly developed and applied since the 1970s. Currently, its pressure can reach 550GPa and the temperature can reach 6000K. It has become an important means of modern scientific research. It is currently the only scientific device that can generate a static pressure of one million atmospheres and is the most important scientific instrument in the field of high-pressure science and technology research.
[0003] In addition to generating high pressure, the DAC typically requires a temperature environment to cooperate with the DAC. Currently, in high-temperature experiments with the DAC, to ensure a stable temperature field and high experimental temperatures, heating rings are often fixed to the upper and lower pads of the DAC, or are wound as a whole and placed between the diamond anvils, or are placed on the outside of the entire DAC. This assembly method requires consideration of the heating ring's impact on flatness and assembly portability when assembling the diamond anvil press. Furthermore, the traditional heating ring assembly method can only be removed after the DAC is slowly depressurized and the press sleeve and piston are separated.
[0004] The above form will hinder certain test experiments that require the pressurized sample to be heated, such as gas mass spectrometry detection, because the space occupied by the heating ring hinders the mass spectrometry detection of the gas released by the sample to be tested in the press.
[0005] Therefore, how to overcome the defects of the existing technology, obtain a heating device suitable for the specific high-temperature experimental requirements of DAC, and improve the application research and development direction and research environment of the diamond anvil press has become a technical problem that urgently needs to be solved in the existing technology. Utility Model Content
[0006] The purpose of the utility model is to provide an in-situ heating device for a diamond anvil press, which can simplify the in-situ heating device, reduce the volume occupied by a traditional resistance wire heating ring, and make the heating power more concentrated.
[0007] To achieve this purpose, the present invention adopts the following technical solutions:
[0008] An in-situ heating device for a diamond anvil cell press comprises a pair of upper and lower diamond anvil cell press (DAC) pads, a pair of diamond anvil cells, a sample to be heated, and an in-situ heating pad.
[0009] The pads are opposite to each other up and down, and support a pair of diamond anvils in the middle. The in-situ heating gasket is placed in the middle of the pair of diamond anvils. The sample to be heated is placed at the position corresponding to the diamond anvils. The in-situ heating gasket is a double-layer heating structure.
[0010] Optionally, the in-situ heating gasket includes a metal gasket base layer located in the middle, and the upper and lower sides of the metal gasket base layer respectively have an insulating layer and a heating wire layer, thereby forming the double-layer heating structure.
[0011] Optionally, the metal gasket base layer is made of various metal materials such as stainless steel, rhenium or tungsten.
[0012] Optionally, the insulating layer is an aluminum oxide insulating layer.
[0013] Optionally, the heating wire layer is made of various metal materials such as nickel-chromium, tungsten-rhenium, tungsten or silver.
[0014] Optionally, a positioning hole is reserved in the in-situ heating gasket for placing the sample to be heated.
[0015] The utility model can provide a convenient heating function for the diamond anvil press, with concentrated heating power, avoiding the additional large size of the traditional resistance wire heating ring; it can be used in specific situations where high requirements are placed on the uniformity of heating or specific experiments need to be continued on the pressurized sample after heating, reducing unnecessary operating procedures and making high-temperature and high-pressure experiments simpler. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a three-dimensional diagram of an in-situ heating device according to a specific embodiment of the utility model;
[0017] Figure 2 This is an exploded view of an in-situ heating device according to a specific embodiment of the present utility model;
[0018] Figure 3 This is an exploded view of an in-situ heating pad according to a specific embodiment of the present utility model;
[0019] Figure 4 is a cross-sectional view of an in-situ heating pad according to a specific embodiment of the utility model;
[0020] Figure 5 It is a three-dimensional diagram of an in-situ heating pad according to a specific embodiment of the utility model.
[0021] The technical features indicated by the reference numerals in the figures are:
[0022] 1. Heating wire layer; 2. Insulation layer; 3. Metal gasket base layer; 4. In-situ heating gasket; 5. Pad; 6. Diamond anvil; 7. Sample to be heated; 8. Positioning hole. DETAILED DESCRIPTION
[0023] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all of its components.
[0024] The utility model is characterized in that an in-situ heating pad with a double-layer heating function is arranged in the diamond anvil of DAC, thereby increasing the heating power, raising the heating limit temperature, and heating the upper and lower parts simultaneously so that the sample is heated more evenly.
[0025] For details, see Figure 1-Figure 5 , showing a schematic diagram of the in-situ heating device of the present invention, and a schematic diagram of the in-situ heating gasket therein.
[0026] An in-situ heating device for a diamond anvil cell press comprises a pair of upper and lower pads 5 of a diamond anvil cell press (DAC), a pair of diamond anvil cells 6, a sample to be heated 7, and an in-situ heating pad 4;
[0027] The pads are opposite to each other up and down, and support a pair of diamond anvils 6 in the middle. The in-situ heating gasket 4 is placed in the middle of the pair of diamond anvils 6. The sample 7 to be heated is placed at the position corresponding to the diamond anvils 6. The in-situ heating gasket 4 is a double-layer heating structure.
[0028] For details, see Figure 3-5 The in-situ heating pad 4 includes a central metal pad base 3, with an insulating layer 2 and a heating wire layer 1 on the upper and lower sides, respectively, forming a double-layer heating structure. This double-layer heating architecture increases heating power and the heating limit temperature, while simultaneously heating the sample from top to bottom for more uniform heating.
[0029] For further information, see Figure 5 A positioning hole 8 is reserved on the in-situ heating pad 4 for placing the sample 7 to be heated.
[0030] Under the action of the upper and lower diamond anvils 6, a high-pressure working condition is generated, and a high-temperature and high-pressure working condition is achieved in the subsequent heating process.
[0031] In a specific embodiment of the present invention, the metal gasket base layer 3 is made of various metal materials such as stainless steel, rhenium or tungsten.
[0032] The insulating layer 2 can be an aluminum oxide insulating layer, which is made by magnetron sputtering coating method. Its function is to construct a high-temperature resistant insulating layer to avoid direct conduction between the upper heating wire and the lower metal gasket base layer, thereby reducing the heating resistivity and thus having an adverse effect on the heating temperature or uniformity.
[0033] The heating wire layer 1 can be produced using screen printing, and the printed pattern can be customized based on the shape of the gasket and the shape of the reserved sample holes to accommodate different sizes and operating temperatures. The heating wire layer 1 can be made of a variety of metal materials, such as nickel-chromium, tungsten-rhenium, tungsten, or silver, to accommodate different heating temperature requirements based on the material's varying resistivity and physical properties.
[0034] Therefore, the utility model can provide a convenient heating function for the diamond anvil press, with concentrated heating power, avoiding the additional traditional resistance wire heating ring that occupies a large size; it can be used in specific situations where high requirements are placed on the uniformity of heating or where specific experiments need to be continued on the pressurized sample after heating, reducing unnecessary operating procedures and making high-temperature and high-pressure experiments simpler.
[0035] The above content is a further detailed description of the present invention in combination with a specific preferred embodiment. It cannot be determined that the specific embodiments of the present invention are limited to this. For ordinary technicians in the technical field to which the present invention belongs, they can make several simple deductions or substitutions without departing from the concept of the present invention, which should be regarded as belonging to the scope of protection of the present invention determined by the submitted claims.
Claims
1. An in-situ heating device for a diamond anvil press, characterized in that: It includes a pair of upper and lower blocks of a diamond anvil cell press (DAC), a pair of diamond anvil cells, a sample to be heated, and an in-situ heating pad; The pads are opposite to each other up and down, and support a pair of diamond anvils in the middle. The in-situ heating gasket is placed in the middle of the pair of diamond anvils. The sample to be heated is placed at the position corresponding to the diamond anvils. The in-situ heating gasket is a double-layer heating structure.
2. The in-situ heating device according to claim 1, characterized in that: The in-situ heating pad includes a metal pad base layer located in the middle, and the upper and lower sides of the metal pad base layer respectively have an insulating layer and a heating wire layer, thereby forming the double-layer heating structure.
3. The in-situ heating device according to claim 2, characterized in that: The metal gasket base layer is made of stainless steel, rhenium or tungsten.
4. The in-situ heating device according to claim 2, characterized in that: The insulating layer is an aluminum oxide insulating layer.
5. The in-situ heating device according to claim 2, characterized in that: The heating wire layer is made of nickel-chromium, tungsten-rhenium, tungsten or silver.
6. The in-situ heating device according to any one of claims 2 to 5, characterized in that: A positioning hole is reserved on the in-situ heating pad for placing the sample to be heated.