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Electrochemical polishing electrolytic solution of zirconium alloy and electrochemical polishing method of electrochemical polishing electrolytic solution

An electrochemical and zirconium alloy technology, applied in the electrochemical polishing electrolyte of zirconium alloy and the field of electrochemical polishing, can solve the problems of high risk, unfavorable environmental protection and the like

Active Publication Date: 2014-08-13
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Traditional electrochemical polishing electrolytes often contain highly corrosive or toxic electrolytes such as hydrofluoric acid and chromic anhydride, which are highly dangerous and not conducive to environmental protection

Method used

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  • Electrochemical polishing electrolytic solution of zirconium alloy and electrochemical polishing method of electrochemical polishing electrolytic solution
  • Electrochemical polishing electrolytic solution of zirconium alloy and electrochemical polishing method of electrochemical polishing electrolytic solution

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] This example adopts this electrochemical polishing electrolyte and surface polishing technology, to Zr 64.13 Cu 15.75 Ni 10.12 Al 10 The (atomic ratio) alloy surface is polished to give it a specular luster and to obtain very little surface roughness.

[0027] Step 1: Apply 1.5 mm thick Zr 64.13 Cu 15.75 Ni 10.12 Al 10 The alloy sheet was polished with 400-mesh, 600-mesh, 800-mesh, 1000-mesh and 1200-mesh silicon carbide sandpaper in sequence, and ultrasonically cleaned with acetone, ethanol and deionized water in sequence.

[0028] Step 2: Measure 900 ml of anhydrous acetic acid and 100 ml of propionic acid solution in a fume hood and mix to form a solution. Then measure 7 ml of perchloric acid and slowly add it into the above solution under stirring (the above raw materials are all of analytical grade).

[0029] Step 3: Put 1 cm 2 Area of ​​Zr 64.13 Cu 15.75 Ni 10.12 Al 10 alloy sheet, and 3 cm 2 The pure titanium sheet was immersed in the electrolyte so...

Embodiment 2

[0033] This example adopts this electrochemical polishing electrolyte and surface polishing technology, to Zr 62.5 Cu 22.5 Fe 5 Al 10 The (atomic ratio) alloy surface is polished to give it a specular luster and to obtain very little surface roughness.

[0034] Step 1: Apply 1.5 mm thick Zr 62.5 Cu 22.5 Fe 5 Al 10 The alloy sheet was polished with 400 mesh, 600 mesh, 800 mesh, 1000 mesh and 1200 mesh silicon carbide sandpaper in sequence, and ultrasonically cleaned with acetone, absolute ethanol and deionized water in sequence.

[0035] Step 2: Measure 900 ml of anhydrous acetic acid and 100 ml of propionic acid solution in a fume hood and mix to form a solution. Then measure 6 ml of perchloric acid and slowly add it into the above solution under stirring (the above raw materials are all of analytical grade).

[0036] Step 3: Put 1 cm 2 Area of ​​Zr 62.5 Cu 22.5 Fe 5 Al 10 alloy sheet, and 3 cm 2 The pure titanium sheet was immersed in the electrolyte, the temper...

Embodiment 3

[0040] This example adopts this electrochemical polishing electrolyte and surface polishing technology, to Zr 46 Cu 37.6 Ag 8.4 Al 8 The (atomic ratio) alloy surface is polished to give it a specular luster and to obtain very little surface roughness.

[0041] Step 1: Apply 1.5 mm thick Zr 46 Cu 37.6 Ag 8.4 Al 8The alloy sheet was polished with 400 mesh, 600 mesh, 800 mesh, 1000 mesh and 1200 mesh silicon carbide sandpaper in sequence, and ultrasonically cleaned with acetone, absolute ethanol and deionized water in sequence.

[0042] Step 2: Measure 900 ml of anhydrous acetic acid and 100 ml of propionic acid solution in a fume hood and mix to form a solution. Then measure 5 ml of perchloric acid and slowly add it into the above solution under stirring (the above raw materials are all of analytical grade).

[0043] Step 3: Put 1 cm 2 Area of ​​Zr 46 Cu 37.6 Ag 8.4 al 8 alloy sheet, and 3 cm 2 The pure titanium sheet was immersed in the electrolyte solution, the t...

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Abstract

The invention discloses an electrochemical polishing electrolytic solution of zirconium alloy and an electrochemical polishing method of the electrochemical polishing electrolytic solution. The formula is composed of perchloric acid, anhydrous acetic acid and propanoic acid, and is an anhydrous formula; the formula can effectively remove small scratches on the surface of the zirconium alloy and impurities generated in a sand papering polishing process and the like at room temperature, thereby obtaining a good polishing surface and having the advantages of strong practicability, high efficiency, long service life of the solution and the like; and the formula also can be used for zirconium alloy with different components and different shapes. The electrochemical polishing method of the formula can be used for surface pretreatment during operations such as sputtering, electroplating and the like of zirconium alloy, and also can be used for final treatment of devices made of zirconium alloy, thus the application range is wide..

Description

technical field [0001] The invention relates to an electrochemical polishing electrolyte and a polishing method thereof, in particular to an electrochemical polishing electrolyte of a zirconium alloy and an electrochemical polishing method thereof. Background technique [0002] Zirconium alloys have good corrosion resistance, moderate mechanical properties, and low atomic thermal neutron absorption cross section (zirconium is 0.18 barn) in high temperature and high pressure water and steam at 300-400 ° C, and have good compatibility with nuclear fuel Therefore, it can be used as the core structure material (fuel cladding, pressure tube, bracket and tunnel tube) of water-cooled nuclear reactor, which is the main purpose of zirconium alloy. Zirconium has excellent corrosion resistance to various acids (such as hydrochloric acid, nitric acid, sulfuric acid and acetic acid), alkali and salt, so zirconium alloys are also used to make corrosion-resistant parts and pharmaceutical d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25F3/26
Inventor 蒋建中聂西鹏吴振福
Owner ZHEJIANG UNIV
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