Preparation method of magnetic powder particle transmission electron microscope sample

A technology of transmission electron microscope samples and powder particles, which is applied in the preparation of test samples, the application of conductive/insulating/magnetic materials on magnetic films, the magnetism of inorganic materials, etc., and can solve problems such as cutting powder particles

Pending Publication Date: 2021-05-11
SHENYANG JIANZHU UNIVERSITY
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  • Abstract
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Problems solved by technology

[0003] In order to solve the above technical problems, the present invention provides a method for preparing a magnetic powder particle transmission electron microscope sample, which can effectively solve the problems of magnetic powder particle transmission electron microscope sample thickness, powder particle cutting, etc.

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  • Preparation method of magnetic powder particle transmission electron microscope sample
  • Preparation method of magnetic powder particle transmission electron microscope sample
  • Preparation method of magnetic powder particle transmission electron microscope sample

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Embodiment 1

[0026] like Figure 1-Figure 7 As shown, the clamp includes a fixture upper end fixing piece 1 , a fixture lower end fixing piece 2 , a bolt 3 and a pressure block 4 . The fixed piece 1 at the upper end of the fixture and the fixed piece 2 at the lower end of the fixture are square pieces with a side length of 50 mm and a thickness of 3 mm. The four corners are formed with arcs with a radian of 5, and the corresponding positions 10 mm away from the central axis are equidistant. There are four bolt holes with a diameter of 4.5 mm. Bolts 3 are provided in the bolt holes. The upper end of the fixture 1 and the lower end of the fixture 2 are adjusted by bolts 3. The pressure block 4 is placed on the upper end of the fixture for fixation. Between sheet 1 and fixed sheet 2 at the lower end of the fixture, the pressurized block is a square block with a side length of 16 mm and a thickness of 4 mm.

[0027]Spread the magnetic powder particles on the TEM sample support net and add the...

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Abstract

The invention provides a preparation method of a magnetic powder particle transmission electron microscope sample, and belongs to the technical field of transmission electron microscope sample preparation. The method comprises the following steps: embedding magnetic powder particles in a transmission electron microscope sample supporting net, further fixing by using ion thinning special resin, respectively arranging film materials on an upper layer and a lower layer, and applying pressure by using a clamp, uniformly distributing the ion thinning special resin, completely wrapping the transmission electron microscope sample supporting net and the magnetic powder particles, discharging existing air, heating, preserving heat, cooling, taking out the supporting net, preparing a thin area, and preparing the magnetic powder particle transmission electron microscope sample. According to the method, the magnetic powder particles can be subjected to transmission electron microscope microstructure observation, it is guaranteed that the magnetic powder particles can be stable and immovable under the high-intensity magnetic field condition, and transmission electron microscope observation of the microstructure of the magnetic powder particles becomes possible.

Description

technical field [0001] The invention belongs to the technical field of transmission electron microscope sample preparation, in particular to a method for preparing a magnetic powder particle transmission electron microscope sample. Background technique [0002] The preparation of the existing powdered TEM samples first needs to mix the powder with the special resin for ion thinning of the TEM sample and solidify it, then cut it into thin slices with cutting equipment and process them into discs, and finally pass the ion thinning method Prepare the thin area required for TEM observation. This method cannot guarantee that the cut sheet is thin enough, and also requires a long-term mechanical thinning process. At the same time, due to the existence of powder particles, the hardness of the powder particles is significantly different from that of the special resin for TEM ion thinning, which will cause the resin to soften and deform during the cutting process, making the thickne...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F1/06H01F41/32G01N23/04G01N1/28
CPCH01F1/06H01F41/32G01N23/04G01N1/28G01N2223/03G01N2223/102G01N2223/312
Inventor 谢锐吕铮徐长伟王晴李晓刘春明
Owner SHENYANG JIANZHU UNIVERSITY
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