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A kind of electrolyte solution and electrolytic etching treatment method for high entropy alloy

A high-entropy alloy and electrolytic etching technology, applied in the field of electrolysis, can solve the problems of poor controllability and non-environmental protection, and achieve the effects of poor controllability, simple steps, and improved environmental protection and controllability

Inactive Publication Date: 2019-06-28
JIANGMEN POLYTECHNIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] High-entropy alloys have excellent corrosion resistance. At present, only aqua regia can be used for corrosion treatment, which is not only very environmentally friendly, but also has poor controllability

Method used

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  • A kind of electrolyte solution and electrolytic etching treatment method for high entropy alloy
  • A kind of electrolyte solution and electrolytic etching treatment method for high entropy alloy
  • A kind of electrolyte solution and electrolytic etching treatment method for high entropy alloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] (1) Prepare electrolyte and polish high-entropy alloy:

[0038] An electrolyte for high-entropy alloys, calculated as a percentage by weight, including the following components:

[0039]

[0040] Weigh 50 grams of nitric acid, 50 grams of hydrochloric acid, 20 grams of oxalic acid, 50 grams of ethanol, 2 grams of sodium lauryl sulfate, 3 grams of fatty alcohol polyoxyethylene ether, 5 grams of propylene thiourea, and 820 grams of distilled water. Electrolyte.

[0041] (2) Pour the electrolyte into a 1-liter electrolytic tank to polish the AlCoCrCu 0.5 FeMoNiTi high-entropy alloy is used as anode, carbon rod is used as cathode, at room temperature, 10A / dm 2 Electrolyze for 30 seconds under current density conditions.

[0042] (3) The high-entropy alloy after electrolysis in step (2) is ultrasonically cleaned for 25 seconds, then cleaned with ethanol, and finally dried with cold air.

[0043] (4) Test effect: Under a microscope of 50-800 times, the grain boundaries and other cryst...

Embodiment 2

[0045] (1) Prepare electrolyte and polish high-entropy alloy:

[0046] An electrolyte for high-entropy alloys, calculated as a percentage by weight, including the following components:

[0047]

[0048] Weigh 30 grams of nitric acid, 50 grams of hydrochloric acid, 10 grams of oxalic acid, 50 grams of ethanol, 2 grams of sodium lauryl sulfate, 3 grams of fatty alcohol polyoxyethylene ether, 5 grams of propylene thiourea, and 850 grams of distilled water. Electrolyte.

[0049] (2) Pour the electrolyte into a 1-liter electrolytic tank to obtain polished Al 2 CoCrCu 0.5 FeMoNiTi high-entropy alloy is used as anode, carbon rod is used as cathode, at room temperature, 10A / dm 2 Electrolyze for 30 seconds under current density conditions.

[0050] (3) The high-entropy alloy after electrolysis in step (2) is ultrasonically cleaned for 30 seconds, then cleaned with ethanol, and finally dried with cold air.

[0051] (4) Test effect: Under a microscope of 50-800 times, the grain boundaries and oth...

Embodiment 3

[0053] (1) Prepare electrolyte and polish high-entropy alloy:

[0054] An electrolyte for high-entropy alloys, calculated as a percentage by weight, including the following components:

[0055]

[0056]

[0057] Weigh 10 grams of nitric acid, 80 grams of hydrochloric acid, 20 grams of oxalic acid, 30 grams of ethanol, 2 grams of sodium lauryl sulfate, 3 grams of fatty alcohol polyoxyethylene ether, 5 grams of propylene thiourea, and 850 grams of distilled water. Electrolyte.

[0058] (2) Pour the electrolyte into a 1-liter electrolytic tank to obtain polished Al 3 CoCrCu 0.5 FeMoNi 3 Ti 3 High-entropy alloy as anode, carbon rod as cathode, at room temperature, 15A / dm 2 Electrolysis for 5 minutes under current density conditions.

[0059] (3) The high-entropy alloy after electrolysis in step (2) is ultrasonically cleaned for 30 seconds, then cleaned with ethanol, and finally dried with cold air.

[0060] (4) Test effect: In this example, the concave stripes formed after crystal defects ...

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Abstract

The invention discloses an electrolytic solution for a high-entropy alloy. The electrolytic solution comprises, by weight, 2-15% of nitric acid, 2-20% of hydrochloric acid, 2-20% of oxalic acid, 1-10%of ethyl alcohol, 0.1-1% of lauryl sodium sulfate, 0.1-1% of fatty alcohol-polyoxyethylene ether, 0.1-1% of allyl thiourea and the balance distilled water. An electrolysis etching treatment method ofthe electrolytic solution for the high-entropy alloy comprises the following steps that 1, the high-entropy alloy is subjected to grinding and / or polishing treatment; 2, the electrolytic solution ispoured into an electrolytic tank, the high-entropy alloy treated in the step 1 is placed into the electrolytic solution, an anode and a cathode are arranged, and direct currents are used for electrolysis etching; and 3, the high-entropy alloy treated in the step 2 is cleaned and aired. According to the method, the crystal boundary and other crystal defects shown on the high-entropy alloy treated through electrolysis etching can be observed clearly.

Description

Technical field [0001] The invention belongs to the technical field of electrolysis, and relates to an electrolyte for high-entropy alloys, and in particular to an electrolyte for high-entropy alloys and an electrolytic etching treatment method. Background technique [0002] Traditional alloys are based on one or two metals as the main body, and other alloying elements are added to obtain the required performance. Even for large-size amorphous materials, the design concept is to form a matrix with multiple elements and add other alloy elements. High-entropy alloy is a new type of alloy design concept, breaking the traditional alloy design concept. [0003] High-entropy alloys are alloys without a single main element, composed of 5 to 10 alloying elements, and the content of each element is between 5% and 35% by mole. It is a new alloy field other than traditional alloys, and has greater freedom in alloy design. Due to the high entropy effect of multiple principal elements, the ty...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25F3/02
CPCC25F3/02
Inventor 黄元盛温立哲
Owner JIANGMEN POLYTECHNIC