Auxiliary tool suitable for sample preparation of XRD (X-Ray Diffraction) sample table and sample preparation device

Abstract

The utility model discloses an auxiliary tool suitable for sample preparation of an XRD (X-Ray Diffraction) sample table and a sample preparation device. The auxiliary tool or the sample preparation device can improve XRD sample preparation efficiency and detection precision. The auxiliary tool suitable for sample preparation of the XRD sample table is used for fixing the sample table with a sample containing groove, and the bottom wall of the sample containing groove extends in the radial direction to form a flange. The auxiliary tool comprises a supporting plate and a support connected to the bottom of the supporting plate, and the support is provided with a containing cavity capable of containing the sample table; a limiting mounting hole communicated with the accommodating cavity is formed in the supporting plate, can limit the flange in the accommodating cavity, and can be hermetically connected with the outer wall of the sample accommodating groove. According to the tool, sample scraping powder is prevented from diffusing towards the periphery through the physical barrier of the supporting plate, and sample spinning interference is eliminated. According to the scheme, the problem of low-angle diffraction data abnormity caused by peripheral pollution in traditional sample preparation is solved fundamentally, and the XRD detection accuracy is remarkably improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to material analysis detection field technical field more specifically, relate to a kind of auxiliary tool and sample preparation device suitable for XRD sample stage sample preparation. BACKGROUND

[0002] X-ray diffraction analysis is analyzed by the diffraction effect of crystal to X-ray, and the spatial distribution structure of internal atom is analyzed, and it is widely used in qualitative and quantitative and microstructure characterization of powder, polycrystal etc. However, in prior art, when sample preparation is tested before using automatic sample changer, sample is easily attached to the flange of sample containing groove, which causes sample spin to be blocked, especially when the sample on the flange causes additional diffraction line interference during low-angle test, which causes diffraction data anomaly and analysis result inaccuracy;And cleaning the flange of sample containing groove before testing is time-consuming and laborious, and problems such as insufficient flatness of sample surface in sample containing groove are easily caused, and the current sample stage cannot avoid the above problems, and there is no suitable auxiliary sample preparation tool on the market, which seriously restricts the detection accuracy and efficiency.

[0003] Therefore, it is urgent to develop an auxiliary sample preparation device that can improve sample preparation efficiency and detection accuracy. UTILITY MODEL CONTENT

[0004] The utility model aims at providing an auxiliary tool and sample preparation device suitable for XRD sample stage sample preparation, which can improve XRD sample preparation efficiency and detection accuracy.

[0005] The utility model provides an auxiliary tool suitable for XRD sample stage sample preparation for fixing sample stage with sample containing groove, and the bottom wall of sample containing groove is radially extended to form flange;Auxiliary tool includes:

[0006] Support plate and bracket connected to the bottom of support plate, wherein,

[0007] The bracket has a containing cavity that can accommodate the sample stage;

[0008] A limiting installation hole is formed in the support plate and is in communication with the containing cavity, the limiting installation hole can limit the flange in the containing cavity, and the limiting installation hole can be sealingly connected with the outer wall of the sample containing groove.

[0009] Optionally, the inner diameter of the limiting installation hole is matched with the outer diameter of the sample containing groove.

[0010] Further, the inner diameter of the limiting installation hole is d1, the outer diameter of the sample containing groove in the sample stage is d2, and 0≤d1-d2≤0.1mm is satisfied.

[0011] Optionally, a fixing member is further arranged in the limiting installation hole, and the fixing member is used for sealingly fixing the sample containing groove in the limiting installation hole.

[0012] Optionally, the fixing member is in interference fit with the outer wall of the sample accommodating groove.

[0013] Optionally, the fixing member comprises an elastic sealing ring adapted to be installed in the limiting installation hole.

[0014] Optionally, the elastic sealing ring is provided with an annular groove at the periphery thereof, which is used to be engaged on the support plate at the side of the limiting installation hole.

[0015] Optionally, the thickness of the support plate is less than or equal to the groove depth of the sample accommodating groove.

[0016] Optionally, the auxiliary tool further comprises a limiting bottom plate, which is detachably installed on the support relative to one end of the support plate.

[0017] Optionally, the support is provided with a limiting bottom plate fixedly connected relative to one end of the support plate, and the limiting bottom plate is provided with an operation hole allowing the sample stage to enter and exit the accommodating cavity.

[0018] The second aspect of the utility model provides a kind of sample preparation tool, including sample stage and the auxiliary tool of any one of the first aspect of the utility model;

[0019] The sample stage has a sample accommodating groove, and the bottom wall of the sample accommodating groove is radially extended to form a flange, and the flange is provided with a magnetic body.

[0020] The support plate is made of ferromagnetic material, and when the outer wall of the sample accommodating groove is located in the limiting installation hole, the magnetic body is magnetically attracted to the support plate.

[0021] Further, the flange includes a mounting position, and the magnetic body is located in the mounting position and can be axially extended and retracted.

[0022] According to the technical content disclosed by the utility model, the following beneficial effects are achieved:

[0023] The auxiliary tool for sample preparation of the XRD sample stage provided by the utility model has the accommodating cavity for accommodating the sample stage; the limiting installation hole is formed in the support plate and communicates with the accommodating cavity; the flange is limited in the accommodating cavity by the limiting installation hole; when the sample stage is installed in the limiting installation hole from the accommodating cavity, the limiting installation hole is sealingly connected with the outer wall of the sample accommodating groove; the support plate covers the flange from above to completely cover the outer peripheral area of the sample accommodating groove, forms a physical isolation barrier, completely blocks the path of the sample powder spreading to the outer periphery, ensures that the sample stage is not interfered during spinning, fundamentally eliminates the low-angle diffraction interference source, and guarantees the accuracy and reproducibility of the XRD detection data.

[0024] Other features and advantages of the utility model will become clear through the following detailed description of exemplary embodiments of the utility model with reference to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0025] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the application and, together with the description, serve to explain the principles of the application.

[0026] Figure 1 It is an auxiliary tool structure for XRD sample table sample preparation.

[0027] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the application and, together with the description, serve to explain the principles of the application. DETAILED DESCRIPTION

[0028] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangements, numerical expressions, and numerical values of the components and steps set forth in these embodiments are not limiting to the scope of the present application unless otherwise specifically stated.

[0029] The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the scope of the application its application or uses.

[0030] Techniques, methods, and apparatus known to those of ordinary skill in the relevant art can not be discussed in detail herein. However, where appropriate, such techniques, methods, and apparatus can be considered part of the present application.

[0031] In all of the examples shown and discussed herein, any specific values should be interpreted as merely illustrative and not limiting. Thus, other examples of the exemplary embodiments can have different values.

[0032] It should be noted that like references and characters herein relate to like items throughout the figures and the written description, and therefore, once an item is defined in one figure, it need not be discussed further in subsequent figures.

[0033] The present application discloses an auxiliary tool for XRD sample table sample preparation, which is used for fixing a sample table with a sample accommodating groove.

[0034] Referring to Figure 1The auxiliary tool comprises a sample holder which is composed of a top support plate 1 and a support frame 2 vertically connected to the bottom of the support plate 1. The support frame 2 is a frame structure, and the top of the support frame 2 is fixedly connected to the bottom surface of the support plate 1 to form a containing cavity containing a sample stage. In this embodiment, the support plate 1 is a square panel with a side length of 53 mm. The height from the upper surface of the support plate 1 to the bottom of the support frame 2 is 12 mm. A circular hollow is formed in the center of the support plate 1, and the diameter of the circular hollow is 26 mm. A limiting installation hole 11 is formed in the circular hollow. A fixing member 4 is arranged in the limiting installation hole 11. The fixing member 4 is used to seal and fix the sample containing groove in the limiting installation hole 11. The fixing member 4 is in interference fit with the outer wall of the sample containing groove. Preferably, the fixing member 4 is an elastic sealing ring which is adapted to be installed in the limiting installation hole 11. The elastic sealing ring can be made of silica gel, and a ring-shaped groove with a certain depth is formed in the periphery of the elastic sealing ring. The cross-sectional shape of the ring-shaped groove is adapted to the edge profile of the central hollow of the support plate 1, and the ring-shaped groove is engaged on the support plate around the limiting installation hole 11. In the installed state, the ring-shaped groove is in interference fit with the edge of the support plate 1. The outer peripheral wall of the sample containing groove is in interference fit with the inner periphery of the elastic sealing ring.

[0035] Of course, in some embodiments, the fixing member 4 can not be arranged. The inner diameter of the limiting installation hole 11 is adapted to the outer diameter of the sample containing groove. As long as the size is appropriate, the limiting installation hole and the outer peripheral wall of the sample containing groove can be directly in interference fit. Preferably, the material of the support plate 1 is selected from materials with certain elastic deformation ability. The inner diameter of the limiting installation hole is d1, and the outer diameter of the sample containing groove in the sample stage is d2, and 0≤d1-d2≤0.1 mm is satisfied.

[0036] In some embodiments, at least one side operation port is arranged on the side surface of the support frame 2. The side operation port is in communication with the containing cavity in the support frame 2, so that the sample stage can be moved into the support frame from the side of the support frame through the side operation port, and the sample stage can be installed on the limiting installation hole 11 from below the support plate. In the installed state, when the sample stage is fixed to the support plate 1, the support plate 1 covers the area outside the outer peripheral wall of the sample containing groove, that is, the support plate 1 covers the flange of the sample stage. The thickness of the support plate 1 is less than or equal to the groove depth of the sample containing groove, so that the top surface of the sample containing groove is flush with or higher than the upper surface of the support plate. In this way, in the installed state, after the sample in the sample containing groove is scraped and cleaned with a glass sheet, the excess sample falls on the surface of the support plate 1. Since the support plate 1 covers the flange of the sample stage, the falling sample will not fall on the flange, so that the outer periphery of the sample stage is free of attachments, and the sample stage is easy to take by the bottom taking mode, which further avoids the spilling of the sample and facilitates the taking of the sample stage.

[0037] It should be noted that the vertical height of the support frame 2 is greater than the height of the sample stage, so that the sample stage can be moved into or out of the support frame from the side of the support frame through the side operation port, and positioned to the support plate 1.

[0038] Further, in some embodiments, the fixing mode of the sample table also includes a magnetic mode, the outer periphery of the limiting installation hole 11 in the center of the support plate 1 is uniformly distributed with four magnetic units 3, the magnetic units 3 are embedded in the support plate 1, adjacent magnetic units are spaced apart by 90 degrees, the outer peripheral wall of the sample accommodating groove is made of ferromagnetic material, and the outer peripheral wall of the sample accommodating groove is magnetically attracted to the four magnetic units 3.

[0039] In some embodiments, the support plate 1 can be provided as a magnetic unit as a whole or in part.

[0040] In some embodiments, the sample table has a sample accommodating groove, the bottom wall of the sample accommodating groove extends radially to form a flange, and a magnetic body is arranged on the flange; the support plate 1 is made of ferromagnetic material, and when the outer wall of the sample accommodating groove is located in the limiting installation hole 11, the magnetic body is magnetically attracted to the support plate 1. Further, the flange includes a mounting position, and the magnetic body is located in the mounting position and can be axially extended and retracted and limited by the flange.

[0041] Of course, it is conceivable that, in order to improve the magnetic attraction stability, the support plate 1 is arranged with the magnetic units 3, and the flange is also provided with a magnetic body, and the magnetic units 3 and the magnetic body are oppositely attracted to each other.

[0042] In some embodiments, the auxiliary tool further includes a limiting bottom plate made of ABS material, the limiting bottom plate is detachably arranged at the bottom of the bracket 2 (one end of the bracket 2 relative to the support plate 1), and the top surface is provided with a positioning hole matched with the outer contour of the sample table bottom disc, and the positioning hole of the bottom plate can limit the sample table to increase the stability of sample preparation, and the detachable bottom plate design facilitates taking. At this time, the side surface of the bracket 2 does not need to be provided with a side operation port, and after the bottom plate is disassembled, the sample table enters and exits the accommodating cavity from the bottom of the bracket 2.

[0043] In some embodiments, the limiting bottom plate is fixedly connected with the bottom of the bracket, and the limiting bottom plate is provided with an operation hole allowing the sample table to enter and exit the accommodating cavity. At this time, the side surface of the bracket 2 does not need to be provided with a side operation port, and the sample table enters and exits the accommodating cavity from the operation hole.

[0044] The utility model also provides a kind of sample preparation tool, including above-mentioned sample table and above-mentioned auxiliary tool.

[0045] Sample preparation tool use method:

[0046] Installation: the sample table is pushed into the cavity of bracket 2 from one of side operation port 21, the bottom of bracket 2 or operation hole, and the sample table is fixed on annular connecting portion by interference fit or magnetic cooperation;

[0047] Sample preparation: scrape the sample flat with the upper surface of sample accommodating groove as reference;And clean the excess sample scattered with brush;

[0048] Disassembly: interference fit light push unlock, magnetic match directly pull out.

[0049] In conclusion, the auxiliary tool for sample preparation of XRD sample table provided by the utility model has the limiting installation hole communicated with the containing cavity arranged on the supporting plate, the limiting installation hole can limit the flange in the containing cavity, when the sample table is installed in the limiting installation hole from the containing cavity, the limiting installation hole is in sealing connection with the outer wall of the sample containing groove, the sealing connection refers to that the limiting installation hole can directly or indirectly cooperate with the sample containing groove, the containing cavity is sealed, and the sample is prevented from falling on the flange limited in the containing cavity. It can be seen that the supporting plate 1 shields the flange of the sample table, the interference or magnetic connection structure is combined, the fixing stability is obviously improved, and the powder leakage is reduced. The horizontal non-interference taking and placing is realized through the side operation port design, and the operation convenience is better than that of the traditional tool. The elastic sealing ring and the limiting bottom plate further optimize the sealing and positioning precision.

[0050] Although some specific embodiments of the utility model have been described in detail through examples, those skilled in the art should understand that the above examples are only for illustration, and are not intended to limit the scope of the utility model. Those skilled in the art should understand that the above embodiments can be modified without departing from the scope and spirit of the utility model. The scope of the utility model is defined by the appended claims.

Claims

1. An auxiliary tool for sample preparation of an XRD sample stage, for fixing a sample stage having a sample accommodating groove, a bottom wall of the sample accommodating groove being extended radially to form a flange; characterized in that The auxiliary tool comprises: a support plate and a support frame connected to the bottom of the support plate, wherein the support frame has a containing cavity capable of containing the sample stage; a limiting installation hole is formed in the support plate and communicates with the containing cavity, the limiting installation hole can limit the flange in the containing cavity, and the limiting installation hole can be sealingly connected with the outer wall of the sample containing groove.

2. The aid according to claim 1, characterized in that The inner diameter of the limiting installation hole is matched with the outer diameter of the sample containing groove.

3. The aid according to claim 1, characterized in that The limiting installation hole is further provided with a fixing member, and the fixing member is used for sealingly fixing the sample containing groove in the limiting installation hole.

4. The aid according to claim 3, characterized in that The fixing member is in interference fit with the outer wall of the sample containing groove.

5. The aid according to claim 4, characterized in that The fixing member comprises an elastic sealing ring matched with the limiting installation hole.

6. The aid according to claim 5, characterized in that An annular groove is formed in the periphery of the elastic sealing ring and is used for being engaged on the support plate on the side of the limiting installation hole.

7. The aid according to any one of claims 1 to 6, characterized in that The thickness of the support plate is less than or equal to the groove depth of the sample containing groove.

8. The aid according to any one of claims 1 to 6, characterized in that The auxiliary tool further comprises a limiting bottom plate, and the limiting bottom plate is detachably installed on one end of the support frame relative to the support plate.

9. The aid according to any one of claims 1 to 6, characterized in that One end of the support frame relative to the support plate is provided with a limiting bottom plate fixedly connected thereto, and the limiting bottom plate is provided with an operation hole allowing the sample stage to enter and exit the containing cavity.

10. A sample preparation tool, characterized by, The sample stage and the auxiliary tool according to any one of claims 1 to 9 are comprised. The sample stage has a sample containing groove, the bottom wall of the sample containing groove extends radially to form a flange, and the flange is provided with a magnetic body. The support plate is made of ferromagnetic material, and when the outer wall of the sample containing groove is located in the limiting installation hole, the magnetic body is magnetically attracted to the support plate.

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