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Ion liquid polishing solution for electrochemically polishing magnesium alloy and preparation method thereof

A technology of ionic liquid and magnesium alloy, which is applied in the field of electrochemical polishing, can solve the problems of short life of polishing liquid, high operating cost, pitting corrosion, etc., and achieve the effect of low price, no environmental pollution, and good thermal stability

Inactive Publication Date: 2012-02-01
合肥金盟工贸有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide an ionic liquid polishing solution for electrochemically polishing magnesium alloys and a preparation method thereof, which solves the problem that the existing electrolytic polishing is easy to cause pitting on the surface of the magnesium alloy substrate, and the polishing solution has a short service life and is difficult to operate. high cost problem

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] An ionic liquid polishing solution for electrochemically polishing magnesium alloys, which is prepared by mass percentage of the following raw materials: 42% choline chloride, 50% urea, 5% thiourea leveling agent, 3.75% tartaric acid corrosion inhibitor %, glucose brightener 0.25%.

[0023] Preparation method: put choline chloride and urea in a container and heat magnetically in an oil bath at 75-85°C to form a colorless and transparent solution, then add thiourea leveling agent, tartaric acid corrosion inhibitor and glucose light agent, continue to ensure that the magnetic stirring is heated in an oil bath at 75-85°C until it is stirred into a colorless and transparent solution, and the finished polishing solution is obtained.

[0024] Polishing test: Before the test, first set the process parameters of electrochemical polishing as follows: pulse constant potential mode, duty ratio 5:1, pulse period 120s, temperature 65°C, voltage 8.0 V, maximum current density 10 mA / c...

Embodiment 2

[0026] An ionic liquid polishing solution for electrochemically polishing magnesium alloys, which is prepared by mass percentage of the following raw materials: choline chloride 42%, urea 50%, thiourea leveling agent 4%, tartaric acid corrosion inhibitor 3.5% %, glucose brightener 0.5%.

[0027] The preparation method is the same as in Example 1.

[0028] The polishing test was the same as in Example 1, and the surface of the electrochemically polished magnesium alloy was bright and free of pitting.

Embodiment 3

[0030] An ionic liquid polishing solution for electrochemically polishing magnesium alloys, which is prepared by mass percentage from the following raw materials: choline chloride 42%, urea 50%, thiourea leveler 3%, tartaric acid corrosion inhibitor 4 %, glucose brightener 1%.

[0031] The preparation method is the same as in Example 1.

[0032] The polishing test was the same as in Example 1, and the surface of the electrochemically polished magnesium alloy was bright and free of pitting.

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Abstract

The invention discloses an ion liquid polishing solution for electrochemically polishing magnesium alloy, which is prepared from the following raw materials in percentage by mass: 88-96% of depth eutectic ion liquid and 4-12% of additives. The polishing solution can be used for well polishing and leveling the magnesium alloy to achieve an effect of high brightness; besides, the magnesium alloy is environmental-friendly, naturally degradable and pollution-free.

Description

[0001] technical field [0002] The invention relates to the field of electrochemical polishing, in particular to an ionic liquid polishing solution for electrochemically polishing magnesium alloys and a preparation method thereof. Background technique [0003] Magnesium alloy has the advantages of good thermal conductivity, excellent anti-magnetic ability and easy recycling. It is one of the light-weight and high-strength materials with the most development and application potential. It has extremely broad application prospects in many fields such as aviation, electronics, and automobiles. . However, the chemical properties of magnesium alloy are extremely active, and it is particularly easy to react with water and be corroded. This is the key issue hindering its widespread application. [0004] When processing and manufacturing magnesium alloy workpieces, in order to meet the requirements for surface brightness or precision of the workpiece, it is usually necessary to po...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25F3/18
Inventor 孙皋飞时康
Owner 合肥金盟工贸有限公司
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