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Preparation method and device for nano porous metal or ceramic

A nanoporous, metal technology, applied in the field of porous materials, can solve the problems of difficult to widely use, limited to the laboratory stage, pollution of nano powders, etc., and achieve the effect of simple process, easy automation and large specific surface area.

Inactive Publication Date: 2010-10-06
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the preparation methods of nanoporous metal materials mainly include dealloying method, nano powder sintering method, oblique incidence deposition method and colloidal crystal method, etc., but due to the strict operating conditions of these methods, some chemical reactions will pollute the environment And the agglomeration of nano-powder itself makes it difficult for these methods to be widely used in actual production, and is currently only limited to the laboratory stage.

Method used

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  • Preparation method and device for nano porous metal or ceramic
  • Preparation method and device for nano porous metal or ceramic
  • Preparation method and device for nano porous metal or ceramic

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] 1) Select pure Mg metal powder with a particle size in the range of 120 μm-150 μm;

[0033] 2) Select carbon steel as the substrate for pure Mg powder to adhere to, and pre-treat it: polish with metallographic sandpaper, polish with polishing paste, then pickle and clean with organic solvents to remove surface oil, and finally use ultrasonic waves in alcohol Wash, remove and dry with a drying oven;

[0034]3) Put the carbon steel treated in step 2) one by one on the heating table and heat to 50°C, apply a layer of rosin resin evenly on the surface of the carbon steel, and after it is completely melted, use a metal sieve with a mesh number of 100 Spread the micron pure Mg metal powder provided by step 1) evenly on the carbon steel substrate, let it stand and dry, so that the metal powder is bonded on the carbon steel substrate, and the thickness of the obtained metal powder is 0.1mm;

[0035] 4) Place the carbon steel coated with pure Mg powder on the surface of the pro...

Embodiment 2

[0037] 1) Select Ti alloy powder with a particle size in the range of 60 μm-100 μm;

[0038] 2) Select austenitic stainless steel as the substrate for the Ti alloy powder to adhere to, and perform pretreatment on it: polish with metallographic sandpaper, polish with polishing paste, then pickle and clean with organic solvents to remove surface oil, and finally use it in alcohol Ultrasonic cleaning, take out and dry with drying oven;

[0039] 3) Place the stainless steel treated in step 2) one by one on a heating platform and heat to 60°C, evenly apply a layer of rosin resin on the surface of the stainless steel, and after it is completely melted, use a metal screen with a mesh number of 150 ) The micron Ti alloy powder provided by ) is evenly spread on the stainless steel substrate, left to stand and dried, so that the metal powder is bonded on the stainless steel substrate, and the thickness of the obtained metal powder is 0.2mm;

[0040] 4) Place the stainless steel coated ...

Embodiment 3

[0042] 1) Select pure Ti metal powder with a particle size in the range of 50 μm-80 μm;

[0043] 2) Select austenitic stainless steel as the substrate for the pure Ti powder to adhere to, and pre-treat it: polish with metallographic sandpaper, polish with polishing paste, then pickle and clean with organic solvents to remove surface oil, and finally use it in alcohol Ultrasonic cleaning, take out and dry with drying oven;

[0044] 3) Place the stainless steel treated in step 2) one by one on a heating platform and heat to 70°C, and evenly apply a layer of rosin resin on the surface of the stainless steel. After it is completely melted, use a metal screen with a mesh number of 200 ) The micron pure Ti metal powder provided by ) is evenly spread on the stainless steel substrate, left to stand and dried, so that the metal powder is bonded on the stainless steel substrate, and the thickness of the obtained metal powder is 0.3mm;

[0045] 4) Place the stainless steel coated with p...

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Abstract

The invention discloses a preparation method and a preparation device for nano porous metal or ceramic, and relates to the field of porous materials. The preparation method comprises the following steps of: adhering micron-sized metal powder to a processed substrate by using abietic resin; standing and air drying the substrate; controlling the temperature of the surface of the irradiated powder by adjusting laser processing parameters in different atmospheres with laser deep penetration welding technology and heating the micron-sized metal powder to be in the proximity of the melting point; and quickly melting and adhering the heated powder, curing and thinning the heated powder and volatizing the abietic resin to produce the nano porous metal or ceramic. The preparation device comprises a workbench, a glass container, a laser spot energy optimization device, a laser, a high-temperature-resistant temperature measurement probe or embedded temperature measurement line, a high-accuracy full-automatic computer temperature measurement and acquisition system and the like. The method and the device have the advantages of simple process, low cost, easy implementation of automation and suitability for batch production.

Description

technical field [0001] The invention relates to the field of porous materials, in particular to a preparation method and device for nanoporous metal or ceramics. Background technique [0002] Due to their unique pore structure and large internal surface area, porous materials have been widely used in many fields such as catalysis, adsorption, material assembly, medicine and biology. In the late 1980s, a new type of porous material—porous metal or ceramic material developed rapidly, and has attracted the attention and research of many scientific researchers. It is composed of a supporting frame and internal holes, and has excellent physical properties such as light weight, low density, large specific surface area, high specific strength, and high specific stiffness. Due to its functional characteristics such as good noise reduction and noise reduction effect, it has been applied to the fields of aviation, electronics and medical materials. [0003] The pore size of porous m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/08C04B38/00C04B35/632
Inventor 崔承云张永康崔熙贵张朝阳鲁金忠钱晓明管海兵
Owner JIANGSU UNIV
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