A sample preparation and pressing device for XRD back-mounting method

Abstract

This utility model discloses a sample preparation and pressing device for XRD back-mounted method, relating to the field of powder X-ray diffraction analysis technology. It includes a sample preparation plate and a pressing rod. The sample preparation plate has a through-hole. The pressing rod includes a pressing block and a handle. The handle is a rod, and the pressing block is fixedly connected to the bottom of the handle. The bottom surface of the pressing block is flat, and the outer contour of the pressing block matches the size and shape of the sample preparation hole. This utility model solves three major problems of the traditional glass slide pressing method: uneven surface, difficulty in forming small samples, and powder overflow during pressing.

Description

Technical Field

[0001] This utility model relates to the field of powder X-ray diffraction analysis technology, and in particular to an XRD back-mounted sample preparation and pressing device. Background Technology

[0002] An XRD (Extracorporeal Ratio) diffractometer is an analytical instrument based on the principle of interaction between X-rays and crystalline materials. It utilizes the diffraction phenomenon produced when X-rays irradiate crystalline materials, recording the position, intensity, and shape of diffraction peaks with a detector. By combining this with Bragg's equation to calculate interplanar spacing, it determines the crystal structure, unit cell parameters, and atomic arrangement of the material. Analysis of diffraction data can further infer grain size, preferred orientation, and internal stress distribution within the material. The pellet method is a commonly used XRD sample testing method. When using this method, sample powder is evenly sprinkled into the window of the sample preparation plate, spreading it evenly within the window. The powder is then gently pressed down with a glass slide, and finally, excess powder is scraped off with the broken edge of the slide, resulting in a flat sample powder surface. However, scraping off excess powder with the slide can easily damage the surface formed by sample pressing, leading to poor surface flatness for the powder. Furthermore, some excess powder may spill out during the pressing process, contaminating the test surface. To solve the above-mentioned technical problems, this application proposes an XRD back-mounted sample preparation press based on the tableting method. Utility Model Content

[0003] This invention provides a sample preparation and pressing device for XRD back-mounted method, which can solve three major problems of traditional glass slide pressing method: uneven surface, difficulty in forming micro-samples, and powder overflow during pressing.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: An XRD back-mounted sample preparation and pressing device includes a sample preparation plate and a pressing rod; the sample preparation plate has a sample preparation hole that runs vertically through the sample preparation plate; the pressing rod includes a pressing block and a pressing rod handle, the pressing rod handle is a rod, and the pressing block is fixedly connected to the bottom of the pressing rod handle; the bottom surface of the pressing block is flat, and the outer periphery of the pressing block matches the size and shape of the sample preparation hole.

[0005] Furthermore, the sample preparation hole is a circular hole structure.

[0006] Furthermore, the pressing block has a cylindrical structure, and the outer periphery of the pressing block is in clearance fit with the sample preparation hole.

[0007] Furthermore, the XRD back-mounted sample preparation and pressing device further includes a scraper rod, which includes a scraper block and a scraper handle. The scraper handle is a rod-like component. The scraper block is fixedly connected to the bottom of the scraper handle. The scraper block includes a cylindrical portion and several scraper portions. The several scraper portions are distributed at equal angles around the axis of the cylindrical portion on the outer periphery of the cylindrical portion. The extending direction of each scraper portion is different from the radial direction of the cylindrical portion. The bottom surfaces of the cylindrical portion and the several scraper portions are flat.

[0008] Furthermore, the diameter of the cylindrical portion is smaller than the diameter of the sample preparation hole.

[0009] The beneficial effects of this utility model are: 1) This utility model requires two glass slides for use. The sample preparation plate is stacked on one glass slide, and the sample preparation hole of the sample preparation plate is changed to a through design to form a temporary sample groove with the glass slide. The sample is pressed and shaped using a pressure rod, which makes the shaping easier. After pressing and shaping, the other glass slide is placed on top. During testing, the sample preparation plate and the two glass slides are rotated 180°, and the sample surface on the back of the sample preparation plate is used as the testing surface. This surface has not been subjected to any contact operations such as scratching or cleaning. The powder surface on the back is flat, undamaged, and free of powder overflow, which can improve the sample testing accuracy and solve the three major pain points of the traditional glass slide pressing method: uneven surface, difficulty in shaping micro-samples, and powder overflow during pressing.

[0010] 2) After using the pressure bar to press the sample, this utility model requires adding sample powder and pressing the sample once. At this time, the pressure bar can be replaced with a scraper. The scraper is used to repeatedly rotate forward and backward, pressing the powder sample while rotating. This can improve the pressing and forming effect of the sample powder, and the scraping part of the scraper can be used to clean up the overflowing pressed sample powder. When rotating clockwise, the excess sample powder is collected at the acute angle between the scraping part and the cylindrical part while the powder sample is flattened. When rotating counterclockwise, the collected excess sample powder is spread out. Repeating this process multiple times can clean up the excess sample powder and fill the edge of the sample hole, keeping the front of the sample flat and intact. When the glass slide is flipped over, it can ensure that the inside of the sample is not easily deformed or damaged, and maintain the flatness of the back of the sample. Attached Figure Description

[0011] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, wherein: Figure 1 This is a perspective view of all the objects required for use in the embodiments of this utility model; Figure 2 This is a perspective view of the sample being pressed using a pressure bar in an embodiment of this utility model; Figure 3 This is a perspective view of the sample being pressed using a hanging rod in an embodiment of this utility model; Figure 4 This is a perspective view of two glass slides clamped together to make a sample in an embodiment of this utility model; Figure 5 This is a schematic diagram of the structure at the bottom of the scraper rod in an embodiment of this utility model; Attached image labels: 1-Sample plate, 2-Pressure bar, 11-Sample hole, 21-Pressure block, 22-Pressure bar handle, 3-Slide, 4-Scraper bar, 41-Scraper block, 42-Scraper handle, 411-Cylindrical part, 412-Scraper part. Detailed Implementation

[0012] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0013] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a central component. When a component is described as "connected to" another component, it can be directly connected to the other component or may have a central component. When a component is described as "set on" another component, it can be directly set on the other component or may have a central component. When a component is described as "set in the middle," it is not simply set in the exact center, as long as it is not set within the area defined by both ends being in the middle. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0014] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0015] Reference Figures 1 to 5As shown, an XRD back-mounted sample preparation and pressing device includes a sample preparation plate 1 and a pressing rod 2. The sample preparation plate 1 has a sample preparation hole 11 that runs vertically through the sample preparation plate. The sample preparation hole 11 is a circular hole structure, and the upper and lower surfaces of the sample preparation plate 1 are flat. The pressing rod 2 includes a pressing block 21 and a pressing rod handle 22. The pressing rod handle 22 is a rod, and the pressing block 21 is fixedly connected to the bottom of the pressing rod handle 22. The pressing block 21 has a cylindrical structure with a flat bottom surface. The outer periphery of the pressing block 21 matches the size and shape of the sample preparation hole 11, and the outer periphery of the pressing block 21 is clearance-fitted with the sample preparation hole 11, allowing it to be smoothly embedded into the sample preparation hole. This invention requires two glass slides 3 for use. The sample preparation plate is approximately the same size as the glass slide. During use, the sample preparation plate 1 is stacked on one of the glass slides 3, and clamps are used to secure the glass slide 3 to the sample preparation plate 1. Sample powder is added to the sample preparation hole 11, spread evenly, and then the pressure rod 2 is used to align with and insert into the sample preparation hole to press the sample powder firmly. Figure 2 As shown; repeat the sample powder addition and compaction operation once more, using another glass slide 3 to slide and push it in from one side of the sample preparation plate 1 to push away the remaining powder protruding from the sample preparation hole 11 until the sample preparation hole 11 is covered. At this time, the two glass slides 3 together clamp the sample preparation plate 1, as shown. Figure 3 As shown, the two glass slides 3, together with the sample preparation plate 1, are clamped and rotated 180°. The first glass slide 3 is removed, and the powder surface at the bottom of the original sample preparation hole 11 is used as the detection surface. The sample preparation plate 1 and the second glass slide 3 are clamped and fixed together to complete the sample preparation. This utility model changes the sample preparation hole of the sample preparation plate 1 to a through design, which, together with the glass slide 3, forms a temporary sample groove. The pressure rod 2 is used to press and shape the sample, making it easier to form. During the test, the sample surface on the back of the sample preparation plate 1 is used as the detection surface. This surface has not been subjected to any contact operations such as scratching or cleaning. The powder surface on the back is flat, undamaged, and free of powder overflow, which can improve the sample detection accuracy and solve the three major pain points of the traditional glass slide pressing method: uneven surface, difficulty in forming micro-samples, and powder overflow during pressing.

[0016] Considering that after using the pressure bar 2 to press the sample, sample powder needs to be added and pressed at the same time, the traditional scraping operation is to use the broken edge of the glass slide to push away the excess sample powder. During the pushing process, the front of the sample may be damaged, and the sample shape may be damaged when flipping over. Therefore, in order to improve the forming quality of the front of the sample, this utility model also designed a scraper bar 4. The scraper rod 4 includes a scraper block 41 and a scraper handle 42, the scraper handle 42 being a rod; the scraper block 41 is fixedly connected to the bottom of the scraper handle 42; the scraper block 41 includes a cylindrical portion 411 and a plurality of scraper portions 412; the plurality of scraper portions 412 are distributed at equal angles around the axis of the cylindrical portion 411 on the outer periphery of the cylindrical portion 411; the extending direction of each scraper portion 412 is different from the radial direction of the cylindrical portion 411, and the cylindrical portion 411 and the scraper portions 412 are integrally formed; the bottom surfaces of the cylindrical portion 411 and the scraper portions 412 are flat, such as... Figure 5 As shown. The diameter of the cylindrical part is smaller than the diameter of the sample preparation hole. In this invention, after using the pressure rod 2 to press the sample, a single addition of sample powder and pressing operation is required. At this time, the pressure rod 2 can be replaced with a scraper rod 4. The scraper rod 4 can be used to repeatedly rotate forward and backward while pressing the sample preparation hole, as shown. Figure 3 As shown, rotating while pressing the powder sample can improve the pressing and forming effect of the sample powder, and the scraper part 411 of the scraper rod 4 can be used to clean up the overflowing pressed sample powder. When rotating clockwise, while scraping the powder sample, the excess sample powder can be collected at the acute angle side of the scraper part 411 and the cylindrical part 412. When rotating counterclockwise, the collected excess sample powder can be spread out. After repeating this process multiple times, the excess sample powder can be cleaned up and the edge of the sample preparation hole 11 can be filled, keeping the front of the sample flat and intact. When the glass slide is flipped over, it can be ensured that the inside of the sample is not easily deformed or damaged, and the back of the sample can be kept flat and intact.

[0017] The above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Any modifications or equivalent substitutions that do not depart from the spirit and scope of this utility model should be covered within the scope of the technical solution of this utility model.

Claims

1. A sample preparation and pressing device for XRD back-mounted method, characterized in that, It includes a sample preparation plate and a pressure rod; the sample preparation plate has a sample preparation hole that runs through it from top to bottom; the pressure rod includes a pressure block and a pressure rod handle, the pressure rod handle is a rod, and the pressure block is fixedly connected to the bottom of the pressure rod handle; the bottom surface of the pressure block is flat, and the outer periphery of the pressure block matches the size and shape of the sample preparation hole.

2. The XRD back-mounted sample preparation and pressing device according to claim 1, characterized in that, The sample preparation hole is a circular hole structure.

3. The XRD back-mounted sample preparation and pressing device according to claim 2, characterized in that, The pressing block has a cylindrical structure, and the outer periphery of the pressing block is fitted with the sample preparation hole with a clearance.

4. The XRD back-mounted sample preparation and pressing device according to claim 2, characterized in that, The XRD back-mounted sample preparation and pressing device further includes a scraper rod, which includes a scraper block and a scraper handle. The scraper handle is a rod. The scraper block is fixedly connected to the bottom of the scraper handle. The scraper block includes a cylindrical part and several scraper parts. The several scraper parts are distributed at equal angles around the axis of the cylindrical part on the outer periphery of the cylindrical part. The extension direction of each scraper part is different from the radial direction of the cylindrical part. The bottom surfaces of the cylindrical part and the several scraper parts are flat.

5. The XRD back-mounted sample preparation and pressing device according to claim 4, characterized in that, The diameter of the cylindrical portion is smaller than the diameter of the sample preparation hole.

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