Micro-focus CT (Computed Tomography) sample table

Abstract

The utility model discloses a microfocus CT sample stage which comprises a sample stage body and a fixing piece, a mounting part is arranged in the vertical direction of the sample stage body, the mounting part is used for mounting a sample to be processed, a fixing hole communicated with the mounting part is formed in the horizontal direction of the sample stage body, and the sample stage body is detachably connected with the fixing piece. The fixing part is used for fixing a to-be-treated sample. During use, an operator arranges a sample in the mounting part and penetrates the fixing piece through the fixing hole to enable the fixing piece to be matched with the sample, so that the position of the sample is fixed, and when the sample is treated and needs to be detached, only the fixing piece needs to be detached from the fixing hole, and the fixing piece does not fix the sample any more. Through the arrangement, after the sample is separated from the sample table body, the sample table body can still be continuously put into use and is applied to fixing other samples, so that the repeated use of the sample table is realized, and the repeated utilization rate of the sample table is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of small composite material CT scanning, in particular to a micro-focus CT sample table. Background Art

[0002] The high-temperature service performance of high-temperature thermal structural components of ceramic-based composites is affected by many factors, such as fiber type, interface phase type, and matrix type. When ceramic-based composites are used in high-temperature structural components, they need to be eroded by the high-temperature water-oxygen coupling environment for a long time during service, resulting in thermal physical and chemical damage coupling, which further destroys the internal network structure of the material and produces defects such as pores, cracks, delamination, and bundle breakage; and as the service time increases, the defects inside the material will gradually increase, resulting in a sharp decline in the stability of the components, or even failure. Therefore, it is of great significance to study the defects and structures of ceramic-based composites in high-temperature water-oxygen coupling environments and different water-oxygen assessment times to improve their high-temperature service performance. Microfocus CT scanning detection is currently the best non-destructive testing method for the internal quality of ceramic-based composites. It can effectively detect defects and structures such as delamination, cracks, and pores inside the material, which is of great significance to the study of the high-temperature service performance of ceramic-based composites.

[0003] The bulk ceramic matrix composite material is composed of multiple fiber bundles with different arrangements, while the small composite material specimen composed of a single fiber bundle and a matrix corresponds to the basic scale of the bulk composite material, and the failure mechanism and damage law in the high-temperature water-oxygen coupling environment are also very similar. Therefore, through the small composite material produced at a lower cost, its structure and defects in the high-temperature water-oxygen coupling environment and different water-oxygen test times can be accurately characterized.

[0004] At present, many scholars have carried out high-throughput experiments in the form of small composite materials, which can not only comprehensively study the influence of various factors such as fiber, interface phase, matrix, etc. on small composite materials, but also analyze the oxidation mechanism and damage mechanism of small composite materials with different fiber, interface phase, and matrix types in high-temperature water-oxygen coupling environment and different water-oxygen test time, which not only greatly reduces the cost of the experiment, but also improves the experimental efficiency. However, the existing sample stages compatible with micro-focus CT scanning and detection equipment all use the filling method to fix the sample, and the sample stage cannot be reused, resulting in energy waste.

[0005] Therefore, how to improve the reuse rate of the sample stage is a technical problem that technicians in this field currently need to solve. Utility Model Content

[0006] In view of this, the purpose of the utility model is to provide a micro-focus CT sample stage to improve the reuse rate of the sample stage;

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A microfocus CT sample stage comprises a sample stage body and a fixing piece. A mounting portion is provided in the vertical direction of the sample stage body, and the mounting portion is used to mount a sample to be processed. A fixing hole connected to the mounting portion is provided in the horizontal direction of the sample stage body. The sample stage body and the fixing piece are detachably connected, and the fixing piece is used to fix the sample to be processed.

[0009] Optionally, in the above-mentioned microfocus CT sample stage, the fixing member is a bolt, and the fixing hole is an internal threaded hole.

[0010] Optionally, in the above-mentioned microfocus CT sample stage, the sample stage body is cylindrical, the mounting portion is cylindrical, the diameter of the sample stage body is less than or equal to 30 mm, the thickness of the sample stage body is less than or equal to 10 mm, and the diameter of the mounting portion is 0.5 mm-5 mm.

[0011] Optionally, in the above-mentioned microfocus CT sample stage, the sample stage body and the fixing parts are made of high temperature resistant and oxidation resistant materials.

[0012] Optionally, in the above-mentioned microfocus CT sample stage, one mounting portion is connected to one or more fixing holes.

[0013] Optionally, in the above-mentioned microfocus CT sample stage, the number of the mounting parts is 1-20.

[0014] Optionally, in the above-mentioned microfocus CT sample stage, the mounting portion is a mounting through hole.

[0015] Optionally, in the above-mentioned microfocus CT sample stage, the mounting portion is a mounting groove.

[0016] Optionally, in the above-mentioned microfocus CT sample stage, when the number of the mounting parts is two or more, the distance between two adjacent mounting parts is 0.2 mm-2 mm.

[0017] When using the micro-focus CT sample stage provided by the utility model, the operator arranges the sample inside the mounting portion, and passes the fixing part through the fixing hole so that the fixing part cooperates with the sample, thereby fixing the position of the sample. When the sample is processed and needs to be removed, the fixing part only needs to be removed from the fixing hole, and the fixing part no longer fixes the sample. Such an arrangement enables the sample stage body to continue to be put into use after the sample is separated from the sample stage body, and is used to fix other samples, thereby realizing the reuse of the sample stage and improving the reuse rate of the sample stage. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 This is an overall structural diagram of the micro-focus CT sample stage disclosed in the embodiment of the utility model;

[0020] Figure 2 This is a structural diagram of the microfocus CT sample stage disclosed in an embodiment of the utility model after the sample is installed;

[0021] in:

[0022] The sample stage body 100 , the mounting portion 200 , the fixing hole 300 , the sample 400 , and the fixing member 500 . DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making novel work are within the scope of protection of the utility model.

[0024] In the description of the present invention, it should be understood that the terms "upper", "lower", "top surface", "bottom surface" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the positions or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limitations of the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0025] Microfocus CT: CT is computer tomography, which can be classified according to different criteria, microfocus CT (test object 1-30mm, resolution 0.5-5um);

[0026] Chip-based high-throughput characterization: A chip has many small circuits on a substrate. Chip-based is similar to a chip. Operators put many small samples on a template and then perform performance characterization and testing. In this way, many samples can be tested at one time, which can achieve high-throughput testing.

[0027] The micro-focus CT sample stage disclosed by the utility model can carry multiple small samples at the same time, and the micro-focus CT sample stage is sent to a micro-focus CT scanning device for scanning. The scanning result obtained by the micro-focus CT scanning device can analyze the influence of different factors on the sample.

[0028] like Figure 1 and Figure 2 As shown, the micro-focus CT sample stage disclosed in the utility model includes a sample stage body 100 and a fixing member 500. The sample stage body 100 is provided with a mounting portion 200 in the vertical direction, and the mounting portion 200 is used to mount the sample 400 to be processed. The sample stage body 100 is provided with a fixing hole 300 in the horizontal direction that is connected to the mounting portion 200. The fixing hole 300 and the fixing member 500 are detachably connected, and the fixing member 500 is used to fix the sample 400 to be processed. Specifically, after the sample stage body 100 and the sample 400 are fixed, the position of the sample 400 remains unchanged, and the sample stage body 100 can be tested multiple times with the sample 400 in a high-temperature water-oxygen coupling environment and at different water-oxygen test times, and after each water-oxygen test, the sample 400 can be subjected to micro-focus CT chip-based high-throughput characterization. Therefore, the microfocus CT sample stage can efficiently detect and analyze the internal changes of small composite materials with different types of fibers, interface phases, and matrices in a high-temperature water-oxygen coupling environment, and compare the structural and defect changes under different water-oxygen testing times, thereby further revealing their oxidation mechanism and damage mechanism.

[0029] When the micro-focus CT sample stage provided by the utility model is used, the operator arranges the sample 400 inside the mounting portion 200, and passes the fixing member 500 through the fixing hole 300, so that the fixing member 500 cooperates with the sample 400, thereby fixing the position of the sample 400. When the sample 400 is processed and needs to be removed, the fixing member 500 only needs to be removed from the fixing hole 300, and the fixing member 500 no longer fixes the sample 400. Such an arrangement enables the sample stage body 100 to continue to be put into use after the sample 400 is separated from the sample stage body 100, and is used to fix other samples 400, thereby realizing the reuse of the sample stage and improving the reuse rate of the sample stage.

[0030] In some embodiments of the utility model, the fixing member 500 is a bolt, and the fixing hole 300 is an internal threaded hole. Specifically, the fixing member 500 is connected to the sample stage body by bolts. Specifically, the fixing member 500 is a hexagon socket screw. When in use, the operator arranges the sample 400 inside the mounting portion 200, and then screws the bolt into the fixing hole 300 until the bolt is against the sample 400, thereby fixing the sample 400. Further, when the diameter of the sample 400 is greater than 3mm, the operator can groove the bottom of the sample 400 in the horizontal direction so that the bolt can be inserted into the groove to further fix the sample 400. Such an arrangement can make the fixing member 500 detachably connected to the sample stage body 100, and according to the diameter of the sample 400, the operator can adjust the distance of the bolt screwing in, so that the sample stage body 100 can be applied to a variety of samples 400, while improving the reuse rate of the micro-focus CT sample stage, it also improves the versatility of the micro-focus CT sample stage.

[0031] It should be noted that in the prior art, the gap between the sample 400 and the sample stage is filled with a filler to fix the sample 400. After the sample experiment is completed, the filler and the sample stage are often unable to be separated. Even if they are separated, the sample stage will be damaged. Therefore, the existing sample stages are all disposable tools and cannot be reused.

[0032] Furthermore, the fixing member 500 includes but is not limited to a bolted connection with the sample stage body 100. Other workpieces that can realize a detachable connection between the fixing member 500 and the sample stage body 100 are also within the protection scope of the present utility model and will not be described in detail herein.

[0033] In some embodiments of the present invention, the sample stage body 100 is cylindrical, the mounting portion 200 is cylindrical, and the diameter of the sample stage body 100 is less than or equal to 30 mm, the thickness of the sample stage body 100 is less than or equal to 10 mm, and the diameter of the mounting portion 200 is 0.5 mm-5 mm. Specifically, the fixing hole 300 is provided on the circumferential surface of the sample stage body. It should be noted that when the micro-focus CT scanning device scans the sample stage body 100, when it scans the same area of ​​the sample stage body 100, the closer the arrangement positions of the multiple samples 400 are, the higher the resolution of the image generated by the scan. Therefore, the overall volume of the micro-focus CT sample stage provided by the present invention is relatively small to improve the clarity of the scanning result.

[0034] Furthermore, the sample stage body 100 and the mounting portion 200 include, but are not limited to, cylindrical, rectangular, and other shapes, and other shapes capable of carrying the sample 400 are also within the protection scope of the present utility model, and will not be described in detail herein.

[0035] In order to optimize the above technical solution, the sample stage body 100 and the fixing part 500 are made of high temperature and oxidation resistant materials. Specifically, the materials of the sample stage body 100 and the fixing part 500 include but are not limited to aluminum oxide, boron nitride, etc., which will not be repeated here. Specifically, the above sample 400 can be made of small composite materials with different interface phases, fibers, and matrices, such as SiC f / SiC / SiC、SiC f / BN / SiC、C f / SiC / SiC、C f / BN / SiC、C f / SiC / C and other small composite materials. Specifically, under the premise that the sample stage body 100 and the fixing part 500 are both made of high temperature and oxidation resistant materials, the microfocus CT sample stage can be tested with the sample 400 in an environment with a high temperature of 900°C and a water-oxygen ratio of 9:1, and the test time is 10 hours; after 10 hours, a certain position of the sample 400 is subjected to microfocus CT characterization, and then the CT sample stage continues to be tested with the sample 400 in an environment with a high temperature of 900°C and a water-oxygen ratio of 9:1 for 10 hours, and after 10 hours, the same position of the sample is subjected to microfocus CT characterization again; in this way, the test can be repeated many times to obtain the microfocus CT characterization results of the sample 400 at different water-oxygen test times. Such an arrangement can realize high-throughput characterization of batches of small composite materials, such as small composite materials with different fibers, interface phases, and matrices can be fixed on a microfocus CT sample stage for water-oxygen environment test and microfocus CT characterization, thereby improving the test efficiency.

[0036] In order to optimize the above technical solution, one mounting portion 200 is connected to one or more fixing holes 300. Specifically, as the diameter of the sample 400 increases, the mounting portion 200 can be connected to two or more fixing holes 300. When the sample 400 is placed in the mounting portion 200, two or more fixing members 500 simultaneously fix the sample 400 to improve the stability of the fixed sample 400.

[0037] In order to optimize the above technical solution, the number of mounting parts 200 is 1-20. Specifically, when the sample stage body 100 is provided with two or more mounting parts 200, the diameters of the mounting parts 200 can be the same or different, and the shapes of the mounting parts 200 can be the same or different, so that the operator can simultaneously perform multiple assessments on samples 400 of different diameters and materials in a high-temperature water-oxygen coupling environment and at different water-oxygen assessment times, and simultaneously perform microfocus CT chip-based high-throughput characterization on samples 400 of different diameters and materials, that is, perform microfocus CT characterization on different samples 400 at one time, thereby greatly reducing the experimental cost, improving the experimental efficiency, shortening the experimental cycle, and expanding the scope of application of the microfocus CT sample stage.

[0038] In some embodiments of the present invention, the mounting portion 200 is a mounting through hole. Specifically, the mounting portion 200 is a through hole along the vertical direction of the sample stage body 100 .

[0039] In some other embodiments of the present invention, the mounting portion 200 is a mounting groove. Specifically, the mounting portion 200 is a shallow groove along the vertical direction of the sample stage body 100 .

[0040] It should be noted that when the mounting portion 200 is a mounting through hole and / or a mounting groove, after the fixing member 500 fixes the sample 400, the operator can fill and fix the mounting portion 200 according to actual use needs. Because the mounting portion 200 has the fixing member 500 inside, when the fixing member 500 is screwed out of the fixing hole 300, the connection strength between the filler and the mounting portion 200 will be reduced, thereby making it easy for the filler to detach from the mounting portion 200, thereby improving the reuse rate of the sample stage.

[0041] In order to optimize the above technical solution, when the number of the mounting parts 200 is two or more, the distance between two adjacent mounting parts 200 is 0.2 mm-2 mm. Specifically, when the micro-focus CT scanning device scans the same area of ​​the sample stage body 100, the more samples 400 there are in this area, the higher the resolution of the image generated by the scanning, and the clearer the image, so by reducing the distance between two adjacent mounting parts 200, the clarity of the image generated by the micro-focus CT scanning device can be improved.

[0042] The preferred sample stage body 100 of the utility model is provided with five mounting parts 200, and the mounting parts 200 penetrate the sample stage body 100, the diameter of the sample stage body 100 is 20 mm, the thickness is 10 mm, the diameter of the mounting part 200 is 3 mm, the fixing part 500 is a hexagon socket screw, and the material of the sample stage body 100 and the hexagon socket screw is high temperature resistant and oxidation resistant aluminum oxide material. The sample stage body 100 is provided with five fixing holes 300, and each fixing hole 300 is connected to a mounting part 200. After the sample 400 is placed in the mounting part 200, the hexagon socket screw is screwed into the fixing hole 300 and enters the mounting part 200 until the hexagon socket screw presses against and fixes the sample 400.

[0043] The microfocus CT sample stage provided by the utility model can test multiple samples 400 of different types of small composite materials in one CT scan, and can perform multiple tests in a high-temperature water-oxygen coupling environment and at different water-oxygen test times, so as to conduct high-throughput research on the changes in structure and defects of different small composite materials at different water-oxygen test times, and help material workers improve experimental efficiency and shorten experimental cycles. It can also observe and compare the scanning results of multiple samples at the same time, thereby accelerating the pace of material research and development. By detachably connecting the sample stage body 100 and the fixing part 500, the sample stage body 100 can continue to be put into use after the sample 400 is separated from the sample stage body 100, and is used to fix other samples 400, thereby realizing the reuse of the sample stage and improving the reuse rate of the sample stage.

[0044] The advantages of the utility model are:

[0045] (1) Improved the reuse rate of the sample stage;

[0046] (2) High testing efficiency;

[0047] (3)Wide scope of application.

[0048] It should be noted that the micro-focus CT sample stage provided by the present invention can be used in the field of small composite material CT scanning technology or other fields. Other fields are any fields other than the field of small composite material CT scanning technology. The above is only an example and does not limit the application field of the micro-focus CT sample stage provided by the present invention.

[0049] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0050] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

[0051] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0052] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A micro-focus CT sample stage, characterized in that: It includes a sample stage body and a fixing part. The sample stage body is provided with a mounting part in the vertical direction, and the mounting part is used to mount the sample to be processed. The sample stage body is provided with a fixing hole connected to the mounting part in the horizontal direction. The sample stage body and the fixing part are detachably connected, and the fixing part is used to fix the sample to be processed.

2. The microfocus CT sample stage according to claim 1, characterized in that: The fixing piece is a bolt, and the fixing hole is an internal threaded hole.

3. The microfocus CT sample stage according to claim 1, characterized in that: The sample stage body is cylindrical, the mounting portion is cylindrical, the diameter of the sample stage body is less than or equal to 30 mm, the thickness of the sample stage body is less than or equal to 10 mm, and the diameter of the mounting portion is 0.5 mm-5 mm.

4. The microfocus CT sample stage according to claim 1, characterized in that: The sample stage body and the fixing member are made of high temperature resistant and oxidation resistant materials.

5. The microfocus CT sample stage according to claim 1, characterized in that: One of the mounting portions is communicated with one or more of the fixing holes.

6. The microfocus CT sample stage according to claim 1, characterized in that: The number of the mounting parts is 1-20.

7. The microfocus CT sample stage according to claim 1, characterized in that: The mounting portion is a mounting through hole.

8. The microfocus CT sample stage according to claim 1, characterized in that: The mounting portion is a mounting groove.

9. The microfocus CT sample stage according to claim 6, characterized in that: When the number of the mounting parts is two or more, the distance between two adjacent mounting parts is 0.2 mm-2 mm.

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