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A method for preparing macro-sized porous ZNO by electrochemical corrosion

An electrochemical and dimensional technology, used in manufacturing tools, heat treatment equipment, furnaces, etc., can solve the problems of high sintering temperature and high cost, and achieve the effect of uniform distribution, overall integrity and great application value.

Active Publication Date: 2022-04-22
XIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has high sintering temperature and high cost

Method used

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  • A method for preparing macro-sized porous ZNO by electrochemical corrosion
  • A method for preparing macro-sized porous ZNO by electrochemical corrosion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The present invention prepares a method for macroscopic porous ZnO by electrochemical corrosion, and the specific operation steps are as follows:

[0036] Step 1, raw material preparation:

[0037] According to Zn mass fraction 20%, weigh 20g industrial pure Zn and 80g industrial pure Al;

[0038] Step 2, alloy profile preparation:

[0039] First heat the resistance furnace to 200°C, put Al in the crucible when melting, and add Zn to the melt after part of the charge is melted. The melting temperature is 700°C, after Zn and Al are uniformly mixed, the alloy liquid is rolled and pressed into sheets, and the thickness of the alloy sheet is 1mm;

[0040] Step 3, alloy solution treatment:

[0041] Heating the alloy sheet in step 2 for solution treatment, then subjecting the alloy sheet after solution treatment at 380°C for 4 hours to water quenching to obtain a profile;

[0042] Step 4, electrochemical corrosion dealloying treatment:

[0043] The alloy profiles obtaine...

Embodiment 2

[0047] The present invention prepares a method for macroscopic porous ZnO by electrochemical corrosion, and the specific operation steps are as follows:

[0048] Step 1, raw material ratio:

[0049] According to Zn content 20%, weigh 20g industrial pure Zn and 80g industrial pure Al;

[0050] Step 2, alloy profile preparation:

[0051] First heat the resistance furnace to 200°C, put Al in the crucible when melting, and add Zn to the melt after part of the charge is melted. The melting temperature is 700°C, after Zn and Al are uniformly mixed, the alloy liquid is rolled and pressed into sheets, and the thickness of the alloy sheet is 1mm;

[0052] Step 3, alloy solution treatment:

[0053] Heating the alloy sheet in step 2 for solution treatment, then subjecting the alloy sheet after solution treatment at 380°C for 4 hours to water quenching to obtain a profile;

[0054] Step 4, electrochemical corrosion dealloying treatment:

[0055] The alloy profiles obtained in step 3 ...

Embodiment 3

[0059]The present invention prepares a method for macroscopic porous ZnO by electrochemical corrosion, and the specific operation steps are as follows:

[0060] Step 1, raw material preparation:

[0061] According to the Zn content of 30%, weigh 30g industrial pure Zn and 70g industrial pure Al;

[0062] Step 2, alloy profile preparation:

[0063] First heat the resistance furnace to about 200°C, put Al in the crucible when melting, and add Zn to the melt when part of the charge is melted. The melting temperature is 700°C, after Zn and Al are uniformly mixed, the alloy liquid is rolled and pressed into sheets, and the thickness of the alloy sheet is 0.8mm;

[0064] Step 3, alloy solution treatment:

[0065] Heating the alloy sheet in step 2 for solution treatment, then subjecting the alloy sheet after solution treatment at 380°C for 4 hours to water quenching to obtain a profile;

[0066] Step 4, electrochemical corrosion dealloying treatment:

[0067] The alloy sheet obt...

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Abstract

The invention discloses a method for preparing macro-sized porous ZnO by electrochemical corrosion, which specifically includes the following steps: step 1, according to the weight percentage of industrial pure Zn block accounting for 20%-70% of the whole raw material, the preparation is made of industrial pure Zn block and industrial Raw material composed of pure Al blocks; step 2, heating and smelting pure Al and pure Zn into alloys and then rolling into sheets; step 3, heating the alloy sheets obtained in step 2 for solution treatment, and then heating and solution treating The alloy sheet is subjected to quenching treatment to obtain an alloy profile; step 4, the alloy profile in step 3 is subjected to de-alloying corrosion by an electrochemical method; step 5, the profile obtained after de-alloying corrosion in step 4 is placed in a crucible , put the crucible into a heating furnace to heat and carry out oxidation treatment, and the ZnO material with nanoporous structure can be obtained. The porous ZnO ceramic sheet prepared by the invention has low cost and can be produced on a large scale.

Description

technical field [0001] The invention belongs to the technical field of inorganic non-metallic materials, and relates to a method for preparing macroscopic porous ZnO by electrochemical corrosion. Background technique [0002] In recent years, porous ZnO materials have been widely used in photocatalysis, gas sensors, and light-emitting components due to their good permeability, large specific surface area, low density, high hardness, low thermal conductivity, high temperature resistance, and corrosion resistance. Not only that, ZnO also has very important application value in magnetic materials, piezoelectric materials and sensor materials. [0003] The application number is 201610292949.2, the publication number is CN105948809A, and the publication number is 2016.0921. The invention patent named a preparation method of porous ZnO block discloses a preparation method of porous ZnO block material. Zinc acetate is used as raw material, and acetic acid Zinc is dissolved in the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25F3/04C25F3/02C23C8/10C22F1/16C22F1/053C22C21/10C22C18/04C21D9/46
CPCC25F3/04C23C8/10C22C21/10C22F1/053C22F1/002C21D9/46C25F3/02C22C18/04C22F1/165
Inventor 颜国君苏金阳王苗欣美小煜杨永高许欣敏邱昱
Owner XIAN UNIV OF TECH
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