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Chromium-titanium alloy treatment method and application of chromium-titanium alloy treatment method in metallographic structure display

A technology of chromium-titanium alloy and processing method, which is applied in the field of material corrosion, can solve the problems of poor metallographic structure display effect, uncontrollable, uneven dyeing, etc., and achieve the effect of good display effect, improved flatness, and stable process

Pending Publication Date: 2020-08-25
KONFOONG MATERIALS INTERNATIONAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the performance of titanium alloy is relatively stable, it is difficult to dye or dye unevenly, and the display effect of the metallographic structure is poor. The method is complicated to operate, and the process is unstable and uncontrollable.

Method used

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  • Chromium-titanium alloy treatment method and application of chromium-titanium alloy treatment method in metallographic structure display

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] The present embodiment provides a chromium-titanium alloy processing method, the method comprising the following steps:

[0050] (1) Take the chromium-titanium alloy target blank, use 400# water-based sandpaper, 1000# water-based sandpaper and 2000# water-based sandpaper to mechanically polish in sequence, and use water as a wetting agent, and polish for 5 minutes until the surface is bright;

[0051] (2) Immerse the mechanically polished chromium-titanium alloy in the electrolytic polishing solution, perform electrolytic corrosion at a voltage of 42V, keep the temperature at 25°C for 55s, and form a corrosion surface;

[0052] The electrolytic polishing liquid comprises perchloric acid, ethanol, n-butanol and water;

[0053] Taking the volume of the polishing liquid as 100%, the volume fraction of the perchloric acid is 5%, the volume fraction of the ethanol is 65%, the volume fraction of the n-butanol is 5%, and the volume fraction of the water The volume fraction is...

Embodiment 2

[0055] The present embodiment provides a chromium-titanium alloy processing method, the method comprising the following steps:

[0056] (1) Take the chromium-titanium alloy target blank, use 400# water-based sandpaper, 1000# water-based sandpaper and 2000# water-based sandpaper to perform mechanical polishing in sequence, use water as a wetting agent, polish for 8 minutes until the surface is bright, and rinse the mechanically polished chrome with water Titanium alloy surface, blow dry;

[0057] (2) Immerse the mechanically polished chromium-titanium alloy in the electrolytic polishing solution, perform electrolytic corrosion at a voltage of 42V, keep the temperature at 25°C for 55s, and form a corroded surface, take out the electrolytically etched chromium-titanium alloy, rinse it with water, blow Dry;

[0058] The electrolytic polishing liquid comprises perchloric acid, ethanol, n-butanol and water;

[0059] Taking the volume of the polishing liquid as 100%, the volume fra...

Embodiment 3

[0061] The present embodiment provides a chromium-titanium alloy processing method, the method comprising the following steps:

[0062] (1) Take the chromium-titanium alloy target blank, use 400# water-based sandpaper, 1000# water-based sandpaper and 2000# water-based sandpaper to perform mechanical polishing in sequence, use water as a wetting agent, polish for 8 minutes until the surface is bright, and rinse the mechanically polished chrome with water Titanium alloy surface, drying;

[0063] (2) Immerse the mechanically polished chromium-titanium alloy in the electrolytic polishing solution, perform electrolytic corrosion at a voltage of 42V, keep the temperature at 25°C for 55s, and form a corroded surface, take out the electrolytically etched chromium-titanium alloy, and rinse it with water. drying;

[0064] The electrolytic polishing liquid comprises perchloric acid, ethanol, n-butanol and water;

[0065] Taking the volume of the polishing liquid as 100%, the volume fra...

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Abstract

The invention relates to a chromium-titanium alloy treatment method and application thereof in metallographic structure display. The method comprises the following steps that (1) the surface of the chromium-titanium alloy is subjected to mechanical polishing; and (2) the chromium-titanium alloy obtained after mechanical polishing is immersed in an electrolytic polishing solution, electrolytic corrosion is conducted, a corrosion face is formed, and the electrolytic polishing solution comprises perchloric acid. According to the method, substances such as an oxide layer on the surface of the chromium-titanium alloy are removed through mechanical polishing, the real metallographic structure of the chromium-titanium alloy is exposed, meanwhile, the flatness of the surface of the chromium-titanium alloy is improved, and metallographic display errors are reduced; and the chromium-titanium alloy obtained after mechanical polishing is immersed in an electrolytic polishing solution containing perchloric acid for electrolytic corrosion, titanium atoms located on the grain boundary of the chromium-titanium alloy react with perchloric acid preferentially, selective dissolution occurs, and a corrosion surface with the clear grain boundary morphology is formed. The method is good in metallographic structure grain boundary display effect, stable in process and high in controllability.

Description

technical field [0001] The invention relates to the technical field of material corrosion, in particular to a chromium-titanium alloy treatment method and its application in metallographic structure display. Background technique [0002] Titanium alloy has the characteristics of high specific strength, corrosion resistance, low density, good weldability and good biocompatibility, and is widely used in aviation, aerospace, weapons, marine and chemical industries. With the continuous expansion of the amount and application range of titanium alloys, more stringent requirements are put forward for the comprehensive mechanical properties of titanium alloys such as hardness, strength, and ductility. The internal structure of materials is directly and closely related to material properties such as hardness, strength, and ductility, and metallographic observation is the most direct and effective method for studying the internal structure of metal materials. Chemical composition and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/28G01N1/32G01N21/84C25F3/26
CPCG01N1/286G01N1/32G01N21/84C25F3/26G01N2001/2866
Inventor 姚力军潘杰边逸军王学泽胡淼锡
Owner KONFOONG MATERIALS INTERNATIONAL CO LTD
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