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Nickel or nickel alloy perforated nanosphere and method for manufacturing same

A technology of perforated balls and nickel alloys, applied in the field of metal or alloy powder, can solve the technical problems of difficulty in obtaining powder and other problems, and achieve the effects of improving specific surface, simple and easy process operation and low cost

Inactive Publication Date: 2014-04-30
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a nickel or nickel alloy nano-perforated ball to solve the problem of pearl-like metal powder in the prior art. Generally, the metal is deposited on the surface of the oxide or polymer wire, and then removed by burning or other methods. The material coated in it is obtained, but the particle size of the powder obtained by this method is several microns or even tens of microns, and it is difficult to obtain the technical problem of powder with a particle size below microns

Method used

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  • Nickel or nickel alloy perforated nanosphere and method for manufacturing same
  • Nickel or nickel alloy perforated nanosphere and method for manufacturing same
  • Nickel or nickel alloy perforated nanosphere and method for manufacturing same

Examples

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Embodiment 1

[0042] Example 1 Preparation of nickel-phosphorus alloy nano-perforated spheres

[0043]Prepare nickel sulfate, sodium hypophosphite and sodium hydroxide into 2mol / L, 2mol / L and 2mol / L solutions respectively, take 7.5ml of nickel sulfate (2mol / L) in a 250ml beaker, and then add 45ml of deionized Water, heat the diluted nickel sulfate in a constant temperature water bath at 90±1°C for 8 minutes to make the temperature of nickel sulfate about 80°C, then slowly pour 7.5ml of sodium hydroxide (2mol / L) into the diluted nickel sulfate In the nickel sulfate solution, stir while pouring, and finally obtain a uniform nickel hydroxide colloid. Put the nickel hydroxide colloid in a 100ml reaction kettle, seal it, heat it up to 110°C in an oil bath at 120°C and keep it warm for 24 hours, cool it naturally, take it out and wash it with deionized water for 6 times, and get a concentration of 0.018mol / L Ni(SO 4 ) 0.3 (OH) 1.4 Nanowire suspension (which contains Ni(SO 4 ) 0.3 (OH) 1.4 ...

Embodiment 2

[0044] Example 2 Preparation of nickel-boron alloy nano-perforated spheres

[0045] Prepare nickel sulfate, sodium borohydride and ammonia water into 2mol / L, 2mol / L and 2mol / L solutions respectively, take 9ml of nickel sulfate (2mol / L) in a 250ml beaker, add 45ml of deionized water, and dilute Heat the finished nickel sulfate in a constant temperature water bath at 85±1°C to 70°C for 8 minutes, then slowly pour 9ml of ammonia water into the diluted nickel sulfate solution, stir while pouring, and finally obtain a uniform nickel hydroxide colloid . Put the nickel hydroxide colloid in a 100ml reaction kettle, seal it, keep it warm in an oil bath at 120°C for 24 hours, cool it naturally, take it out and wash it with deionized water for 6 times, and get nickel hydroxide with a concentration of 0.018mol / L Nanowire suspension (which contains 1.37 grams of nickel hydroxide nanowires). Get 10ml of the above-mentioned nickel hydroxide nanowire suspension, add 1 drop of palladium chlo...

Embodiment 3

[0046] Example 3 Preparation of Nickel-Cobalt-Phosphorus Alloy Nano-Perforated Balls

[0047] Prepare nickel sulfate, cobalt sulfate, sodium hypophosphite and sodium hydroxide into 2mol / L, 2mol / L, 2mol / L and 2mol / L solutions respectively, take 5ml nickel sulfate (2mol / L) and 2.5ml cobalt sulfate (2mol / L) in a 250ml beaker, then add 45ml of deionized water, heat the diluted nickel-cobalt sulfate in a constant temperature water bath at 90±1°C for 8 minutes, and then add 7.5ml of sodium hydroxide (2mol / L L) Slowly pour into the diluted nickel-cobalt sulfate solution, stir while pouring, and finally obtain a uniform nickel-cobalt hydroxide colloid. Put the nickel cobalt hydroxide colloid in a 100ml reaction kettle, seal it, keep it warm in an oil bath at 180°C for 12 hours, cool it down naturally, take it out and wash it with deionized water for 6 times, and get a hydroxide with a concentration of 0.018mol / L. Nickel-cobalt nanowire suspension (containing 1.17 grams of nickel-coba...

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Abstract

The invention relates to the technical field of metal or alloy powder, in particular to a nickel or nickel alloy perforated nanosphere and a method for manufacturing the same. The nickel or nickel alloy perforated nanosphere is powdery and contains water, nickel hydroxide, nickel oxide, hydrogen and steam, the aperture of the perforated nanosphere ranges from 20nm to 100nm, and the diameter of the perforated nanosphere ranges from 60nm to 300nm. Compared with the prior art, the nickel or nickel alloy perforated nanosphere and the method have the advantages that the diameter of the nickel or nickel alloy perforated nanosphere reaches a nanometer scale, perforated nano-pores are formed in the nickel or nickel alloy perforated nanosphere, accordingly, the specific surface areas of grains further can be increased, and the electromagnetic performance of nickel or nickel alloy powder can be greatly improved.

Description

technical field [0001] The invention relates to the technical field of metal or alloy powders, in particular to nickel or nickel alloy nano-perforated balls and a preparation method thereof. Background technique [0002] Nickel or nickel alloy powder has been widely used in industrial production as an efficient microwave absorbing material. The electromagnetic properties of nickel or nickel alloy powder are not only affected by the nanonization of the material, but also by the nano-perforation (hollowing) of the material. At present, the preparation of ultra-fine nickel powder is usually prepared by chemical reaction method, and nickel powder in the shape of spherical, granular, fibrous, etc. can be obtained. Making the powder into a hollow or nano-perforated structure further improves the specific surface of the particles, and can be used in industrial production as a high-efficiency microwave absorbing material. [0003] Micron-scale or nano-scale hollow / nano-perforated ...

Claims

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Application Information

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IPC IPC(8): B22F9/24B22F1/00B82Y40/00
Inventor 邓意达王浩然胡文彬刘磊沈彬仵亚停钟澄
Owner SHANGHAI JIAO TONG UNIV
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