Powder sample preparation device for scanning electron microscope

Abstract

The utility model discloses a powder sample preparation device for a scanning electron microscope, which comprises a sample seat, a conductive adhesive tape and a plurality of sample preparation tables, and a sample preparation groove with an opening on the upper surface is arranged on the sample seat; the conductive adhesive tape is adhered to the groove bottom of the sample preparation groove; the sample preparation tables are sequentially placed in the sample preparation groove and are all located above the conductive adhesive tape, so that the interior of the sample preparation groove is divided into a plurality of sample preparation sections, and different powder samples are bonded to the conductive adhesive tape in each sample preparation section. The sample preparation device has the beneficial effects that a plurality of samples can be prepared on one sample seat at the same time, the sample preparation efficiency is improved, the mutual pollution among different powder samples can be avoided, and the reliability and the accuracy of a test result are ensured.

Description

Technical Field

[0001] This utility model relates to the field of powder sample preparation technology, and in particular to a powder sample preparation device for scanning electron microscope. Background Technology

[0002] Powder properties, such as particle shape, size, composition, surface microstructure, and internal structure, are important physical properties. Scanning electron microscopy (SEM) has unique advantages and characteristics for studying the various complex structures and properties of powders, especially in observing the particle shape, size, and surface microstructure, which is both convenient and intuitive.

[0003] For conductive powder samples, the testing volume is large in materials testing laboratories. In the sample preparation process, conductive tape is first adhered to the sample holder, then the powder sample is evenly sprinkled onto the conductive tape, allowing the powder sample to adhere to the surface of the conductive tape. The unadhered powder sample is then blown away, allowing for observation under an electron microscope. Existing powder sample preparation devices for scanning electron microscopes (such as the one disclosed in application number 201621229398.7) can only prepare one sample at a time on one sample holder. However, this method greatly reduces sample preparation efficiency. When testing a large number of samples, preparing each sample individually consumes a significant amount of time, severely impacting testing speed and failing to meet the requirements of efficient testing. To accelerate testing, if multiple samples are prepared simultaneously on one sample holder, the lack of effective isolation measures during sample preparation and the removal of unadhered powder makes it easy for powders from different samples to mix, leading to cross-contamination. This severely affects the accurate observation and analysis of individual samples, reducing the reliability and accuracy of test results. Utility Model Content

[0004] The purpose of this invention is to overcome the above-mentioned technical deficiencies and propose a powder sample preparation device for scanning electron microscope, which solves the technical problems of single sample preparation affecting testing speed and multiple sample preparation being prone to contamination.

[0005] To achieve the above-mentioned technical objectives, the present invention provides a powder sample preparation device for scanning electron microscopy, comprising:

[0006] A sample holder, wherein a sample preparation groove is provided on the sample holder with an open upper surface;

[0007] Conductive tape is attached to the bottom of the sample preparation tank;

[0008] Multiple sample preparation stages are placed sequentially in the sample preparation tank, all located above the conductive tape, to divide the sample preparation tank into multiple sample preparation areas, with different powder samples adhered to the conductive tape in each sample preparation area.

[0009] Furthermore, the bottom of the sample preparation tank is provided with multiple insertion holes, and the bottom of each sample preparation stage is engaged with each insertion hole in a corresponding manner.

[0010] Furthermore, the sample preparation stage includes a stage body and a pin. The upper end of the pin is fixedly connected to the bottom of the stage body. When the stage body is placed in the sample preparation slot, the pin is inserted into the insertion hole.

[0011] Furthermore, the conductive tape avoids each of the sockets.

[0012] Furthermore, the sample preparation groove has a ring structure.

[0013] Furthermore, the bottom of the sample preparation tank has a stepped structure, the conductive tape is attached to the lowest bottom of the sample preparation tank, and the insertion hole is opened on the lowest bottom of the sample preparation tank.

[0014] Furthermore, each of the aforementioned platforms is a fan-ring structure.

[0015] Furthermore, adjacent platforms abut against each other.

[0016] Furthermore, the width of the platform is equal to the width of the lowest bottom of the sample preparation tank.

[0017] Furthermore, the sample holder includes an upper plate, a lower plate, a connecting column, and a base rod. The upper plate and the lower plate are spaced apart vertically. The connecting column is located between the upper plate and the lower plate and is fixedly connected to both the upper plate and the lower plate. The base rod is vertically located below the lower plate. The top of the base rod is fixedly connected to the lower plate, and the bottom of the base rod is used to connect to the machine body. The sample preparation slot is formed on the upper plate.

[0018] Compared with the prior art, the beneficial effects of this utility model include: during use, conductive tape is pasted to the bottom of the sample preparation tank, and then each sample preparation stage is placed in the sample preparation tank in sequence, thereby dividing the sample preparation tank into multiple sample preparation areas. During the sample preparation and blowing away of unbonded powder, each sample preparation stage can be taken out individually, so that the powder sample can be evenly sprinkled on the conductive tape in the corresponding sample preparation area or the unbonded powder sample on the conductive tape in the corresponding sample preparation area can be blown away. This can ensure the effectiveness of sample preparation and blowing without affecting other samples. This sample preparation device can prepare multiple samples on one sample holder at the same time, improving sample preparation efficiency, and can also avoid cross-contamination between different powder samples, ensuring the reliability and accuracy of test results. Attached Figure Description

[0019] Figure 1This is a three-dimensional structural schematic diagram of a powder sample preparation device for scanning electron microscope provided by this utility model;

[0020] Figure 2 yes Figure 1 A schematic diagram of the three-dimensional structure of a powder sample preparation device for scanning electron microscope after omitting a sample preparation stage.

[0021] Figure 3 This is a three-dimensional structural schematic diagram of the sample preparation stage of a powder sample preparation device for scanning electron microscope provided by this utility model.

[0022] In the figure: 100 - sample holder, 110 - sample preparation groove, 111 - insertion hole, 120 - upper plate, 130 - lower plate, 140 - connecting column, 150 - bottom rod, 200 - sample preparation stage, 210 - stage body, 220 - pin. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0024] This invention provides a powder sample preparation device for scanning electron microscopy, the structure of which is as follows: Figure 1 and Figure 2 As shown, the device includes a sample holder 100, conductive tape, and multiple sample preparation stages 200. The sample holder 100 has a sample preparation groove 110 with an open upper surface. The conductive tape is adhered to the bottom of the sample preparation groove 110. Each of the sample preparation stages 200 is placed sequentially in the sample preparation groove 110 and is located above the conductive tape, thereby dividing the sample preparation groove 110 into multiple sample preparation areas. Different powder samples are respectively adhered to the conductive tape in each sample preparation area.

[0025] In use, the conductive tape is attached to the bottom of the sample preparation tank 110, and then each of the sample preparation stages 200 is placed sequentially in the sample preparation tank 110, thereby dividing the sample preparation tank 110 into multiple sample preparation areas. During the sample preparation and blowing away of unbonded powder, each of the sample preparation stages 200 is taken out individually, so that the powder sample can be evenly sprinkled on the conductive tape in the corresponding sample preparation area or the unbonded powder sample on the conductive tape in the corresponding sample preparation area can be blown away. This ensures the effectiveness of sample preparation and blowing without affecting other samples. This sample preparation device can prepare multiple samples on one sample holder 100 at the same time, improving sample preparation efficiency, and can also avoid cross-contamination between different powder samples, ensuring the reliability and accuracy of test results.

[0026] As a preferred embodiment, please refer to Figure 2 The bottom of the sample preparation tank 110 is provided with a plurality of insertion holes 111. The bottom of each sample preparation stage 200 is engaged with each insertion hole 111 in a corresponding manner. The sample preparation stage 200 can be limited by engaging with the insertion holes 111 to prevent the sample preparation stage 200 from moving within the sample preparation tank 110.

[0027] As a preferred embodiment, please refer to Figure 2 and Figure 3 The sample preparation stage 200 includes a stage body 210 and a pin 220. The upper end of the pin 220 is fixedly connected to the bottom of the stage body 210. When the stage body 210 is placed in the sample preparation groove 110, the pin 220 is inserted into the insertion hole 111. The stage body 210 is limited by the insertion of the pin 220 into the insertion hole 111, preventing the stage body 210 from moving within the sample preparation groove 110.

[0028] In a preferred embodiment, the conductive tape avoids each of the sockets 111. To ensure that the conductive tape can avoid each of the sockets 111, multiple slots need to be opened on the conductive tape. The conductive tape is pasted to the bottom of the sample preparation slot 110, and each slot corresponds to each of the sockets 111.

[0029] As a preferred embodiment, please refer to Figure 1 and Figure 2 The sample preparation groove 110 has a ring structure, which facilitates electron microscopy observation.

[0030] As a preferred embodiment, please refer to Figure 2 The bottom of the sample preparation groove 110 has a stepped structure. The conductive tape is attached to the lowest bottom of the sample preparation groove 110. The insertion hole 111 is opened on the lowest bottom of the sample preparation groove 110, so that when the platform 210 is placed in the sample preparation groove 110, a gap can be formed between the inner side of the platform 210 and the inner wall of the sample preparation groove 110, thereby facilitating the removal of the platform 210.

[0031] As a preferred embodiment, please refer to Figure 2 and Figure 3 Each of the platform bodies 210 has a fan-ring structure, which can be adapted to the sample preparation groove 110.

[0032] As a preferred embodiment, please refer to Figure 2 The adjacent stage bodies 210 abut against each other, so that the stage body 210 can completely abut against the powder sample on the conductive tape in the corresponding sample preparation area.

[0033] As a preferred embodiment, please refer to Figure 2 The width of the platform 210 is equal to the width of the lowest bottom of the sample preparation groove 110, so that when the platform 210 is placed in the sample preparation groove 110, a gap can be formed between the inner side of the platform 210 and the inner wall of the sample preparation groove 110, thereby facilitating the removal of the platform 210.

[0034] As a preferred embodiment, please refer to Figure 1 and Figure 2 The sample holder 100 includes an upper plate 120, a lower plate 130, a connecting post 140, and a base rod 150. The upper plate 120 and the lower plate 130 are arranged vertically at intervals. The connecting post 140 is disposed between the upper plate 120 and the lower plate 130 and is fixedly connected to the upper plate 120 and the lower plate 130. The base rod 150 is vertically disposed below the lower plate 130. The top of the base rod 150 is fixedly connected to the lower plate 130, and the bottom of the base rod 150 is used to connect to the machine body. The sample preparation slot 110 is formed on the upper plate 120 to facilitate the installation of the sample holder 100.

[0035] To better understand this utility model, the following is combined with... Figure 1 - Figure 3 The working principle of the technical solution of this utility model will be described in detail below:

[0036] In use, the conductive tape is adhered to the lowest bottom of the sample preparation groove 110, and then each of the platform bodies 210 is placed sequentially in the sample preparation groove 110. When the platform body 210 is placed in the sample preparation groove 110, the pin 220 is inserted into the socket 111. The platform body 210 is limited by the insertion of the pin 220 into the socket 111, preventing the platform body 210 from moving within the sample preparation groove 110. This allows multiple sample preparation areas to be separated within the sample preparation groove 110, facilitating sample preparation and... During the process of blowing away unbonded powder, each of the stage bodies 210 is removed individually, so that the powder sample can be evenly sprinkled on the conductive tape in the corresponding sample preparation area or the unbonded powder sample on the conductive tape in the corresponding sample preparation area can be blown away. This ensures the effectiveness of sample preparation and purging without affecting other samples. This sample preparation device can prepare multiple samples on one sample holder 100 at the same time, improving sample preparation efficiency, and can also avoid cross-contamination between different powder samples, ensuring the reliability and accuracy of test results.

[0037] The powder sample preparation device for scanning electron microscopy provided by this utility model has the following beneficial effects:

[0038] (1) The width of the platform 210 is equal to the width of the lowest bottom of the sample preparation groove 110, so that when the platform 210 is placed in the sample preparation groove 110, the inner side of the platform 210 can form a gap with the inner wall of the sample preparation groove 110, thereby facilitating the removal of the platform 210.

[0039] (2) When the platform 210 is placed in the sample preparation groove 110, the pin 220 is inserted into the insertion hole 111. The platform 210 can be limited by the insertion of the pin 220 into the insertion hole 111 to prevent the platform 210 from moving in the sample preparation groove 110.

[0040] (3) This sample preparation device can simultaneously prepare multiple samples on one sample holder 100, improving sample preparation efficiency, and can also avoid cross-contamination between different powder samples, ensuring the reliability and accuracy of test results.

[0041] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A powder sample preparation device for a scanning electron microscope, characterized by, The application relates to a sample seat. The sample seat comprises a sample seat body, a sample making groove with an open upper surface arranged on the sample seat body, a conductive adhesive tape arranged on the groove bottom of the sample making groove, a plurality of sample making platforms arranged in the sample making groove in sequence and above the conductive adhesive tape, a plurality of sample making intervals divided in the sample making groove, and different powder samples respectively adhered on the conductive adhesive tape in each sample making interval. The groove bottom of the sample making groove is provided with a plurality of insertion holes, and the bottom of each sample making platform is correspondingly clamped with each insertion hole. The sample making platform comprises a platform body and a plug, the upper end of the plug is fixedly connected with the bottom of the platform body, and when the platform body is arranged in the sample making groove, the plug is inserted into the insertion hole.

2. The powder sample preparation device for a scanning electron microscope according to claim 1, characterized by, The conductive adhesive tape avoids each insertion hole.

3. The powder sample preparation device for a scanning electron microscope according to claim 2, characterized by, The sample making groove is in a ring structure.

4. The powder sample preparation device for a scanning electron microscope according to claim 2, characterized by, The groove bottom of the sample making groove is in a stepped structure, the conductive adhesive tape is adhered on the lowest groove bottom of the sample making groove, and the insertion hole is arranged on the lowest groove bottom of the sample making groove.

5. The powder sample preparation device for a scanning electron microscope according to claim 3, characterized by Each platform body is in a fan ring structure.

6. The powder sample preparation device for a scanning electron microscope according to claim 5, characterized by The adjacent platform bodies abut against each other.

7. The powder sample preparation device for a scanning electron microscope according to claim 6, characterized by The width of the platform body is equal to the width of the lowest groove bottom of the sample making groove.

8. The powder sample preparation device for a scanning electron microscope according to claim 7, characterized by The sample seat comprises an upper disc, a lower disc, a connecting column and a bottom rod, the upper disc and the lower disc are arranged in a vertical mode, the connecting column is arranged between the upper disc and the lower disc and fixedly connected with the upper disc and the lower disc, the bottom rod is vertically arranged below the lower disc, the top of the bottom rod is fixedly connected with the lower disc, the bottom of the bottom rod is used for being connected with a machine body, and the sample making groove is arranged on the upper disc.

9. The powder sample preparation device for a scanning electron microscope according to claim 7, characterized by ​ 10. The powder sample preparation device for a scanning electron microscope according to claim 1, characterized by, ​

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