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Display method of pure tin metallographic phase

A display method and display surface technology, applied in the field of mechanical processing, can solve problems such as easy formation of deformed layers, interference with deformed layers and pseudo structures, twinning, and polishing into mirror images, etc., to achieve clear and beautiful metallographic structures, simple and efficient corrosion, Simple operation effect

Pending Publication Date: 2021-10-19
先导薄膜材料(安徽)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The hardness and recrystallization temperature of pure tin are low, and it is easy to form a deformed layer. Therefore, tin and its alloys are likely to cause deformed layers, pseudostructures, twins, etc. that interfere with metallographic determination during the sample preparation process.
During metallographic preparation, it is easy to embed silicon carbide in the sandpaper during the grinding process, and it is easy to embed the polishing agent during the polishing process, making it difficult to polish the sample into a mirror image
During metallographic observation, due to the difficulty of controlling the polishing quality and chemical corrosion process, good results cannot be obtained

Method used

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  • Display method of pure tin metallographic phase
  • Display method of pure tin metallographic phase
  • Display method of pure tin metallographic phase

Examples

Experimental program
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Effect test

Embodiment 1

[0026] The method for displaying the metallographic phase of pure tin described in this embodiment comprises the following steps:

[0027] Provide pure tin samples to be tested: use water cutting equipment for sampling, and draw lines on the samples before sampling to ensure that the water cutting sampling surface is flat, and the sample cross section is 15*15mm;

[0028] The surface of the pure tin sample to be tested is sequentially polished with the first water-based sandpaper, the second water-based sandpaper and the third water-based sandpaper to form a first polishing surface. The first water-based sandpaper, the second water-based sandpaper and the third water-based sandpaper They are: 600# water-based sandpaper, 1200# water-based sandpaper and 2500# water-based sandpaper; the grinding speed of the first water-based sandpaper is 400r / min, and the grinding time is 2min. Grinding process: the grinding speed of the second water-based sandpaper is 400r / min. Grind until the ...

Embodiment 2

[0032] The method for displaying the metallographic phase of pure tin described in this embodiment comprises the following steps:

[0033] Provide pure tin samples to be tested: use water cutting equipment for sampling, and draw lines on the samples before sampling to ensure that the water cutting sampling surface is flat, and the sample cross section is 15*15mm;

[0034] The surface of the pure tin sample to be tested is sequentially polished with the first water-based sandpaper, the second water-based sandpaper and the third water-based sandpaper to form a first polishing surface. The first water-based sandpaper, the second water-based sandpaper and the third water-based sandpaper They are: 600# water-based sandpaper, 1200# water-based sandpaper and 2500# water-based sandpaper; the grinding speed of the first water-based sandpaper is 450r / min, and the grinding time is 2min. Grinding process: the grinding speed of the second water-based sandpaper is 450r / min. Grind until the ...

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PUM

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Abstract

The invention discloses a display method of a pure tin metallographic phase. The display method comprises the steps of providing a pure tin sample to be detected; sequentially grinding the surface of the pure tin sample to be detected by adopting first water-based abrasive paper, second water-based abrasive paper and third water-based abrasive paper to form a first polished surface; performing first electrolytic polishing on the first polished surface through a first electrolytic polishing solution to form a second polished surface; and carrying outsecond electrolytic polishing on the second polished surface through a second electrolytic polishing solution to form a pure tin metallographic phase display surface. According to the display method of the pure tin metallographic phase, the first electrolytic polishing and the second electrolytic polishing are combined, operation is easy, consumed time is short, the grain boundary of tin can be corroded easily and efficiently, and the metallographic structure is clear and attractive.

Description

technical field [0001] The invention relates to a mechanical processing method, in particular to a method for displaying the metal phase of pure tin. Background technique [0002] Tin target has strong heat absorption capacity, high strength, stable mechanical properties, and excellent electrical conductivity. It is widely used in tin plating and diffusion doping processes in the microelectronics industry, semiconductors and manufacturing superconducting alloys, etc., serving electronics, optoelectronics, Military, decorative plating and functional films, etc. [0003] The hardness and recrystallization temperature of pure tin are low, and it is easy to form a deformed layer. Therefore, tin and its alloys are likely to cause deformed layers, pseudostructures, twins, etc. that interfere with metallographic determination during the sample preparation process. During metallographic preparation, it is easy to embed silicon carbide in the sandpaper during the grinding process, a...

Claims

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Application Information

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IPC IPC(8): G01N1/32G01N21/84
CPCG01N1/32G01N21/84
Inventor 余飞周荣艳文崇斌
Owner 先导薄膜材料(安徽)有限公司