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Etchant used for displaying the internal microstructure of Zr-Al-Ni-Cu amorphous alloy

A zr-al-ni-cu, amorphous alloy technology, applied in the field of corrosive liquid, can solve the problems of limited microscopic understanding, hard work, and cost of money

Inactive Publication Date: 2014-03-26
HUNAN INSTITUTE OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Amorphous alloy is a new type of material with a structure of long-range disorder and short-range order. Its microstructure can usually only be observed with a high-power transmission electron microscope. The preparation of samples for transmission electron microscope observation is a It is a laborious, time-consuming, and money-consuming work, which greatly limits the microscopic understanding of researchers on this type of material; the microstructure of amorphous alloys and the types of alloys, preparation process conditions, types of alloying elements added and their purity Other factors are related

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Use an analytical balance to weigh 10±0.0001g of hydrofluoric acid and 15±0.0001g of nitric acid respectively, pour the hydrofluoric acid and nitric acid into a glass, and stir them fully with a glass rod to make them evenly mixed. Use a dropper to draw the mixed liquid drop on the polished Zr 65 al 8.7 Cu 14.4 Ni 11.9 Corrode the surface of the bulk amorphous alloy sample for 10 seconds, and test the corroded amorphous alloy surface with medical cotton dipped in absolute ethanol to obtain a clear microstructure.

Embodiment 2

[0012] Use an analytical balance to weigh 10±0.0001g of hydrofluoric acid and 15±0.0001g of nitric acid respectively, pour the hydrofluoric acid and nitric acid into a glass, and stir them fully with a glass rod to make them evenly mixed. Use a dropper to draw the mixed liquid drop on the polished Zr 60.5 al 12.1 Cu 10.95 Ni 16.45 Corrode the surface of the bulk amorphous alloy sample for 10 seconds, and test the corroded amorphous alloy surface with medical cotton dipped in absolute ethanol to obtain a clear microstructure.

Embodiment 3

[0014] Use an analytical balance to weigh 10±0.0001g of hydrofluoric acid and 15±0.0001g of nitric acid respectively, pour the hydrofluoric acid and nitric acid into a glass, and stir them fully with a glass rod to make them evenly mixed. Use a dropper to draw the mixed liquid drop on the polished Zr 63.5 al 10.7 Cu 10.7 Ni 15.1 Corrode the surface of the bulk amorphous alloy sample for 10 seconds, and test the corroded amorphous alloy surface with medical cotton dipped in absolute ethanol to obtain a clear microstructure.

[0015]

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PUM

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Abstract

The invention discloses an etchant used for displaying the internal microstructure of a Zr-Al-Ni-Cu amorphous alloy. The etchant is characterized by comprising steps of (1) respectively weighing hydrofluoric acid having a concentration larger than 40 wt% and nitric acid having a concentration larger than 96 wt% by using a balance according to a weight ratio of 2:3; and (2) mixing the weighed hydrofluoric acid and the weighed nitric acid and stirring with a glass bar to fully mix the two compounds. The etchant is advantaged by rapidly etching the Zr-Al-Ni-Cu amorphous alloy and clearly displaying the internal microstructure of the Zr-Al-Ni-Cu amorphous alloy.

Description

technical field [0001] The invention relates to an etching solution for displaying the internal microstructure of Zr-Al-Ni-Cu amorphous alloy. Background technique [0002] Amorphous alloy is a new type of material with a structure of long-range disorder and short-range order. Its microstructure can usually only be observed with a high-power transmission electron microscope. The preparation of samples for transmission electron microscope observation is a It is a laborious, time-consuming, and money-consuming work, which greatly limits the microscopic understanding of researchers on this type of material; the microstructure of amorphous alloys and the types of alloys, preparation process conditions, types of alloying elements added and their purity and other factors are related. Therefore, how to easily display the microstructure of amorphous alloys is of great significance. Contents of the invention [0003] The object of the present invention is to provide an etching s...

Claims

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Application Information

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IPC IPC(8): C23F1/16C23F1/26G01N1/32
Inventor 蔡安辉熊翔刘咏安伟科周果君罗云李铁林李小松
Owner HUNAN INSTITUTE OF SCIENCE AND TECHNOLOGY