XRD powder sample preparation clamp

Abstract

The utility model relates to the technical field of X-ray diffraction test, in particular to an XRD (X-ray diffraction) powder sample preparation clamp, which comprises a main board, a plurality of X-ray diffraction test blocks, a plurality of X-ray diffraction test blocks, a plurality of X-ray diffraction test blocks, a plurality of X-ray diffraction test blocks and a plurality of X-ray diffraction test blocks, the upper clamping plate is movably arranged on the upper surface of the main plate; the lower clamping plate is movably arranged on the lower surface of the main plate, and when the end face of one end and the end face of one end of the main plate in the length direction are located in the same plane, the lower clamping plate covers the sample groove, and the end face of the other end and the edge of the sample groove are located in the same plane in the length direction of the main plate. According to the XRD powder sample preparation clamp provided by the utility model, the problem of over-insertion of a conventional XRD powder sample preparation objective table caused by misoperation of personnel can be effectively avoided through limiting of the lower clamping plate, and the situation that the flatness of the surface of a sample is damaged due to over-insertion is prevented, so that the test stability of XRD powder sample preparation is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of X-ray diffraction testing, in particular to an XRD powder sample preparation fixture. Background Art

[0002] XRD testing is a research method that uses X-ray diffraction to analyze the diffraction pattern of the material to obtain information such as the composition of the material, the structure of the atoms or molecules inside the material, and the morphology. XRD testing can be performed for both qualitative and quantitative analysis. Among them, qualitative analysis can determine whether a phase exists, and can identify or verify a single phase and a mixture; quantitative analysis can determine the relative content of each phase based on the intensity distribution of the diffraction line. The testing principle is: when a beam of monochromatic X-rays is incident on a crystal, since the crystal is composed of unit cells arranged in atomic specifications, the spacing between these regularly arranged atoms is of the same order of magnitude as the wavelength of the incident X-rays, so the X-rays scattered by different atoms interfere with each other, and strong X-ray diffraction is generated in certain special directions. The orientation and intensity of the diffraction line in the space distribution are closely related to the crystal structure. Since XRD characterizes the internal microstructure of the material, the sample preparation requirements for XRD are relatively strict. Conventionally, the sample preparation requirements for XRD are powdered. The most commonly used conventional XRD powder stage directly equipped by the manufacturer has a size of 5.5cm×3.5cm, and the diameter of the circular sample slot located in the center is 2.5cm, and the depth of the sample stage installation slot is 2cm. In the process of placing the sample, it is necessary to insert the stage into the installation slot and move the sample slot to a position close to the installation slot to ensure that the center of the sample overlaps with the center of the X-ray scan, thereby avoiding X-rays from hitting non-test objects and affecting the XRD test results. However, it is easy to cause over-insertion problems due to human error, which in turn causes the entire surface of the sample to be tested to be affected by external forces to varying degrees, thereby damaging the sample surface and affecting the final XRD test results of the sample. Utility Model Content

[0003] Therefore, the technical problem to be solved by the utility model is to overcome the defect that the existing conventional XRD powder sample preparation fixture is easily prone to over-insertion due to human error, thereby providing an XRD powder sample preparation fixture that solves the above problem.

[0004] In order to achieve the above object, the utility model provides the following technical solutions:

[0005] An XRD powder sample preparation fixture, comprising:

[0006] A main board, on which a sample slot is provided, the sample slot penetrating through the upper and lower surfaces of the main board along the thickness direction of the main board;

[0007] An upper clamping plate, movably arranged on the upper surface of the main board;

[0008] The lower clamping plate is movably arranged on the lower surface of the main board. When the end surface of one end is in the same plane as the end surface of one end of the main board along the length direction, the lower clamping plate covers the sample groove and the end surface of the other end is in the same plane as the edge of the sample groove along the length direction of the main board.

[0009] Preferably, the upper clamping plate has the same specifications as the main board and does not have a sample groove.

[0010] Preferably, the sample groove is located at the center position of the main board.

[0011] Preferably, the sample groove is a circular sample groove.

[0012] Preferably, the main board is connected to the upper clamping plate and the lower clamping plate through an "I"-shaped slide rail.

[0013] Preferably, the "I"-shaped slide rail includes a slider fixed on the main board, and an "I"-shaped structure respectively arranged on the upper clamping plate and the lower clamping plate and cooperating with the slider.

[0014] Preferably, limiting grooves are provided on the upper and lower surfaces of the main board along the length direction, and the "I"-shaped structure is embedded in the limiting grooves, so that the "I"-shaped structure can move repeatedly along the direction in which the limiting grooves are provided.

[0015] The technical solution of the present utility model has the following advantages:

[0016] 1. An XRD powder sample preparation fixture, comprising: a main board, on which a sample groove is provided, and the sample groove penetrates through the opposite upper and lower surfaces of the main board along the thickness direction of the main board; an upper clamping plate, movably arranged on the upper surface of the main board; a lower clamping plate, movably arranged on the lower surface of the main board. When the end surface of one end is in the same plane as the end surface of one end of the main board along the length direction, the lower clamping plate covers the sample groove and the end surface of the other end is in the same plane as the edge of the sample groove along the length direction of the main board. The XRD powder sample preparation fixture provided by the present utility model can effectively avoid the occurrence of over-insertion problems that are prone to occur in conventional XRD powder sample preparation carriers due to human misoperation through the limitation of the lower clamping plate, prevent the flatness of the sample surface from being damaged by over-insertion, and thus improve the test stability of XRD powder sample preparation.

[0017] 2. In the XRD powder sample preparation fixture of the present utility model, the upper clamping plate, the lower clamping plate and the main board are connected through an "I"-shaped slide rail, thereby effectively improving the convenience of XRD powder sample preparation. Description of the Drawings

[0018] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 It is a side structural view of an XRD powder sample preparation fixture provided in Embodiment 1 of the present invention;

[0020] Figure 2 It is a top structural view of the main board in an XRD powder sample preparation fixture provided in Embodiment 1 of the present invention;

[0021] Figure 3 It is a side structural view of the upper and lower clamping plates of an XRD powder sample preparation fixture provided in Embodiment 2 of the present invention;

[0022] Figure 4 It is a side structural view of the main board in an XRD powder sample preparation fixture provided in Embodiment 2 of the present invention.

[0023] Reference numerals: 1 - main board, 2 - upper clamping plate, 3 - lower clamping plate. Specific embodiments

[0024] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the drawings. Obviously, the described embodiments are some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0025] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0026] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0027] In addition, the technical features involved in different embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0028] Embodiment 1

[0029] This embodiment provides an XRD powder sample preparation fixture. Referring to Figure 1 and Figure 2 , it includes a main board 1, an upper clamping plate 2 and a lower clamping plate 3 which are respectively movably arranged on the upper and lower surfaces of the main board 1. The main board is rectangular and a circular sample groove penetrating through the opposite two surfaces of the main board 1 along the thickness direction of the main board 1 is provided at the central position. The specification of the upper clamping plate 2 is the same as that of the main board 1, but no sample groove is provided. When one end face of the lower clamping plate 3 and one end face of the main board 1 along the length direction are in the same plane, the lower clamping plate 3 covers the sample groove and the other end face is in the same plane as the edge of the sample groove along the length direction of the main board 1.

[0030] The XRD powder sample preparation fixture of this embodiment can effectively avoid the occurrence of over-insertion phenomenon caused by the too short carrier stage through the limitation of the lower clamping plate 3, and improves the test stability of XRD powder sample preparation. The working principle of the XRD powder sample preparation fixture of this embodiment is as follows: Place the upper clamping plate 2 under the main board 1, then evenly sprinkle the powder sample to be measured in the sample groove of the main board 1, and gently chop it tightly with the edge of a small spatula to make the powder sample to be measured evenly spread in the sample groove. Then, gently press the powder sample to be measured with the small spatula, finally wipe off the excess powder sample to be measured, cover the lower clamping plate 3, then turn over the XRD powder sample preparation fixture, remove the upper clamping plate 2, insert the XRD powder sample preparation fixture (the end without overlap between the main board 1 and the lower clamping plate 3) into the installation groove of the XRD test equipment and avoid over-insertion of the XRD powder sample preparation fixture through the limitation of the lower clamping plate, and then the test can be carried out.

[0031] Embodiment 2

[0032] This embodiment provides an XRD powder sample preparation fixture. Referring to Figures 1-4, including a main board 1, an upper clamping plate 2 and a lower clamping plate 3 that are respectively movably arranged on the upper and lower surfaces of the main board 1. The main board is rectangular and has a circular sample groove that penetrates the opposite two surfaces of the main board 1 along the thickness direction of the main board 1 at the central position. The specifications of the upper clamping plate 2 are the same as those of the main board 1, but no sample groove is provided. When one end face of the lower clamping plate 3 and one end face of the main board 1 along the length direction are in the same plane, the lower clamping plate 3 covers the sample groove and the other end face is in the same plane as the edge of the sample groove along the length direction of the main board 1. The main board 1 is connected to the upper clamping plate 2 and the lower clamping plate 3 through an "I"-shaped slide rail. Specifically, the "I"-shaped slide rail includes a slider fixed on the main board, and an "I"-shaped structure respectively arranged on the upper clamping plate 2 and the lower clamping plate and cooperating with the slider. Limit grooves are opened along the length direction on the upper and lower surfaces of the main board 1. The "I"-shaped structures on the upper clamping plate 2 and the lower clamping plate 3 are respectively embedded in the limit grooves on the upper surface and the lower surface of the main board, and the "I"-shaped structure can move repeatedly along the direction in which the limit groove is opened.

[0033] The XRD powder sample preparation fixture of this embodiment can effectively avoid the occurrence of over-insertion phenomenon caused by the too short loading platform through the limitation of the lower clamping plate, improving the test stability of XRD powder sample preparation. At the same time, the upper clamping plate, the lower clamping plate and the main board are connected through an "I"-shaped slide rail, which can also effectively improve the convenience of XRD powder sample preparation. The working principle of the XRD powder sample preparation fixture of this embodiment is as follows: Place the upper clamping plate 2 under the main board 1, then evenly sprinkle the powder sample to be tested in the sample groove of the main board 1, and gently chop it tightly with the edge of a small spatula to make the powder sample to be tested evenly spread in the sample groove. Then gently press the powder sample to be tested with the small spatula, and finally wipe off the excess powder sample to be tested. Cover the lower clamping plate 3, then turn over the XRD powder sample preparation fixture, remove the upper clamping plate 2, insert the XRD powder sample preparation fixture (the end without overlap between the main board 1 and the lower clamping plate 3) into the installation groove of the XRD test equipment, and avoid over-insertion of the XRD powder sample preparation fixture through the limitation of the lower clamping plate, and then it can be tested.

[0034] Obviously, the above embodiments are only examples for clear illustration and not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or variations can be made based on the above description. It is not necessary and impossible to list all the implementation manners here. And the obvious changes or variations derived therefrom are still within the protection scope of the present invention.

Claims

1. An XRD powder sample preparation fixture, characterized in that: include: A main board (1) is provided with a sample groove, the sample groove penetrating the upper and lower surfaces of the main board (1) along the thickness direction of the main board (1); An upper clamping plate (2) movably arranged on the upper surface of the main plate (1); A lower clamping plate (3) is movably arranged on the lower surface of the main board (1), and when the end surface of one end thereof is located in the same plane as the end surface of one end of the main board (1) along the length direction, the lower clamping plate (3) covers the sample slot and the end surface of the other end thereof is located in the same plane as the edge of the sample slot along the length direction of the main board (1).

2. The XRD powder sample preparation fixture according to claim 1, characterized in that: The upper clamping plate (2) has the same specifications as the main plate (1) and does not have a sample slot.

3. The XRD powder sample preparation fixture according to claim 1, characterized in that: The sample slot is located at the center of the main board (1).

4. The XRD powder sample preparation fixture according to claim 1, characterized in that: The sample slot is a circular sample slot.

5. The XRD powder sample preparation fixture according to claim 1, characterized in that: The main board (1) is connected to the upper clamping board (2) and the lower clamping board (3) via an I-shaped slide rail.

6. The XRD powder sample preparation fixture according to claim 5, characterized in that: The "I"-shaped slide rail comprises a sliding block fixed on a main board (1), and an "I"-shaped structure respectively arranged on an upper clamping plate (2) and a lower clamping plate (3) and cooperating with the sliding block.

7. The XRD powder sample preparation fixture according to claim 6, characterized in that: The upper and lower surfaces of the main board (1) are provided with limiting grooves along the length direction, and the "I"-shaped structure is embedded in the limiting groove, so that the "I"-shaped structure can move repeatedly along the direction in which the limiting groove is provided.

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