CN108330350A - A kind of foamed aluminium material and preparation method thereof with high-intensity magnetic field shielding properties - Google Patents
A kind of foamed aluminium material and preparation method thereof with high-intensity magnetic field shielding properties Download PDFInfo
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- CN108330350A CN108330350A CN201810077519.8A CN201810077519A CN108330350A CN 108330350 A CN108330350 A CN 108330350A CN 201810077519 A CN201810077519 A CN 201810077519A CN 108330350 A CN108330350 A CN 108330350A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/06—Alloys based on aluminium with magnesium as the next major constituent
- C22C21/08—Alloys based on aluminium with magnesium as the next major constituent with silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/08—Alloys with open or closed pores
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/08—Alloys with open or closed pores
- C22C1/083—Foaming process in molten metal other than by powder metallurgy
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/02—Alloys based on aluminium with silicon as the next major constituent
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
- C22F1/05—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys of the Al-Si-Mg type, i.e. containing silicon and magnesium in approximately equal proportions
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0073—Shielding materials
- H05K9/0075—Magnetic shielding materials
Abstract
The present invention relates to foamed aluminium and its preparing technical fields, more particularly to a kind of foamed aluminium material and preparation method thereof with high-intensity magnetic field shielding properties, the foamed aluminium material with high-intensity magnetic field shielding properties, on the basis of the total weight of foamed aluminium material is 1, the foamed aluminium material with high-intensity magnetic field shielding properties includes：3~12wt% of magnesium, 0.05~0.28wt% of niobium, 0.2~0.5wt% of iron, 0.02~0.1wt% of boron, 3~8wt% of silicon, 0.02~0.08wt% of carbon, 0.21~0.36wt% of titanium, surplus are aluminium；The present invention makes the magnetic field shielding effect of foam aluminium alloy enhance, expands the application range of foamed aluminium material by adding micro metallic element in aluminium alloy.
Description
Technical field
The present invention relates to foamed aluminium and its preparing technical fields, and in particular to a kind of foam with high-intensity magnetic field shielding properties
Aluminum material and preparation method thereof.
Background technology
Foam metal is that the ratio between the volume of all holes and porous body total volume reach 90% or more in porous body, has one
Determine the porous metals of strength and stiffness.The preparation of foam metal has powder metallurgic method and galvanoplastic, the former is by molten metal
It adds foaming agent and foam metal is made；The latter is copied into foam gold by electrodeposition technology on polyurethane foam plastics skeleton
Belong to.Foamed aluminium is after adding additives to pure aluminum or aluminum alloys, by containing a large amount of closure gaps made of foam process
Aluminium based metal material, while having metal and bubble feature concurrently, feature be density is small, high-selenium corn impact capacity is strong, high temperature resistant, fire prevention
Performance is strong, anticorrosive, sound insulation and noise reduction, thermal conductivity is low, electromagnetic wave shielding is high, weatherability is strong, has filter capacity, easy processing, Yi An
Dress, forming accuracy are high, can carry out external coating, be widely used in communications and transportation, building machinery, telecommunications, aerospace, ring
The multiple fields such as border protection.Although existing foamed aluminium material has good magnetic field shielding effect, cannot still meet strong
Application under magnetic field.
Invention content
In view of the deficiencies of the prior art, the object of the present invention is to provide a kind of with high-intensity magnetic field shielding properties and its preparations
Method so that foamed aluminium material has excellent magnetic field shielding effect.
The present invention provides a kind of foamed aluminium material with high-intensity magnetic field shielding properties, with the total weight of foamed aluminium material for 1
On the basis of, the foamed aluminium material with high-intensity magnetic field shielding properties includes：3~12wt% of magnesium, 0.05~0.28wt% of niobium, iron
0.2~0.5wt%, 0.02~0.1wt% of boron, 3~8wt% of silicon, 0.02~0.08wt% of carbon, titanium 0.21~0.36wt%, it is remaining
Amount is aluminium.
Under optimum condition, on the basis of the total weight of foamed aluminium material is 1, the foam with high-intensity magnetic field shielding properties
Aluminum material includes：5.2~8.3wt% of magnesium, 0.12~0.15wt% of niobium, 0.23~0.32wt% of iron, 0.03~0.08wt% of boron,
3.5~6.2wt% of silicon, 0.03~0.05wt% of carbon, 0.26~0.32wt% of titanium, surplus are aluminium.
The present invention also provides a kind of preparation methods of the foamed aluminium material with high-intensity magnetic field shielding properties, including following step
Suddenly：
(1) by amino clay and dodecyldimethylamine oxide, dodecyl-dimethyl amine second lactone at 40~45 DEG C
0.5~1.5h of lower stirring, is then added niobium oxide, and 3-4h is then stirred at 80-100 DEG C, then crosses 800 mesh sieve, is added
Agent powder；
(2) aluminium ingot is heated to melting in atmosphere of inert gases, then into melt be added foaming agent, silicon carbide and on
Additive powder is stated, after keeping the temperature 10~15min at 700~800 DEG C, is proportionally added into magnesium ingot, boron source, circuit is then opened and shakes
Dynamic device makes alloy liquid be sufficiently mixed, and is then cooled to 650~670 DEG C with the rate of 5~10 DEG C/min, is added in melt
Deslagging agent adjusts melt ingredient, then cools to room temperature, obtain foamed aluminium precast body；
(3) solid solution and ageing treatment are carried out to foamed aluminium precast body, obtains the foamed aluminum materials with high-intensity magnetic field shielding properties
Material.
Under optimum condition, the foaming agent is selected from least one of titantium hydride, calcium carbonate and zircoium hydride.
Under optimum condition, the foaming agent includes titantium hydride, calcium carbonate and zircoium hydride, the titantium hydride, calcium carbonate and hydrogen
The mass ratio for changing zirconium is 1：(0.2~0.5)：(0.6~0.8).
Further include the pretreating process of foaming agent under optimum condition, the pretreating process of the foaming agent is：By foaming agent
In atmosphere of inert gases, 30-40min is heated at 480~500 DEG C of temperature.
Under optimum condition, the solid solution temperature is 620~630 DEG C.
Under optimum condition, the temperature of the ageing treatment is 200~230 DEG C, and the time of ageing treatment is 20~30min.
Compared with prior art, the present invention has the following technical effects：
The present invention makes the magnetic field shielding effect of foam aluminium alloy increase by adding micro metallic element in aluminium alloy
By force, the application range of foamed aluminium material is expanded；
The foamed aluminium material that preparation in accordance with the present invention obtains, the size of bubble, shape uniformity, yield rate
Height, intensity are high.
Specific implementation mode
In order to make the technical means, the creative features, the aims and the efficiencies achieved by the present invention be easy to understand, tie below
Specific embodiment is closed, the present invention is furture elucidated.
Embodiment 1
A kind of foamed aluminium material with high-intensity magnetic field shielding properties, it is described on the basis of the total weight of foamed aluminium material is 1
Foamed aluminium material with high-intensity magnetic field shielding properties includes：Magnesium 6.5wt%, niobium 0.13wt%, iron 0.28wt%, boron
0.05wt%, silicon 5.7wt%, carbon 0.04wt%, titanium 0.28wt%, surplus are aluminium.
The preparation method of the foamed aluminium material with high-intensity magnetic field shielding properties, includes the following steps：
(1) amino clay and dodecyldimethylamine oxide, dodecyl-dimethyl amine second lactone are stirred at 45 DEG C
1.5h is mixed, niobium oxide is then added, 3h is then stirred at 100 DEG C, 800 mesh sieve is then crossed, obtains additive powder；
(2) by foaming agent in atmosphere of inert gases, 30min is heated at 500 DEG C of temperature, the foaming agent is by hydrogenating
Titanium, calcium carbonate and zircoium hydride are 1 in mass ratio：0.5 composition；
Aluminium ingot is heated to melting in atmosphere of inert gases, foaming agent, silicon carbide and above-mentioned are then added into melt
Additive powder is proportionally added into magnesium ingot, boron source after keeping the temperature 15min at 800 DEG C, and then opening circuit vibrating device makes conjunction
Golden liquid is sufficiently mixed, and is then cooled to 650 DEG C with the rate of 5 DEG C/min, is added deslagging agent in melt, adjust melt at
Point, it then cools to room temperature, obtains foamed aluminium precast body；
(3) solid solution and ageing treatment are carried out to foamed aluminium precast body, obtains the foamed aluminum materials with high-intensity magnetic field shielding properties
Material, the solid solution temperature are 630 DEG C, and the temperature of the ageing treatment is 230 DEG C, and the time of ageing treatment is 30min.
Embodiment 2
A kind of foamed aluminium material with high-intensity magnetic field shielding properties, it is described on the basis of the total weight of foamed aluminium material is 1
Foamed aluminium material with high-intensity magnetic field shielding properties includes：Magnesium 8.3wt%, niobium 0.12wt%, iron 0.32wt%, boron
0.03wt%, silicon 6.2wt%, carbon 0.03wt%, titanium 0.32wt%, surplus are aluminium.
The preparation method of the foamed aluminium material with high-intensity magnetic field shielding properties, includes the following steps：
(1) amino clay and dodecyldimethylamine oxide, dodecyl-dimethyl amine second lactone are stirred at 40 DEG C
0.5h is mixed, niobium oxide is then added, 3h is then stirred at 80 DEG C, 800 mesh sieve is then crossed, obtains additive powder；
(2) by foaming agent in atmosphere of inert gases, 30min is heated at 480 DEG C of temperature, the foaming agent is by hydrogenating
Titanium, calcium carbonate and zircoium hydride are 1 in mass ratio：0.3：0.6 composition；
Aluminium ingot is heated to melting in atmosphere of inert gases, foaming agent, silicon carbide and above-mentioned are then added into melt
Additive powder is proportionally added into magnesium ingot, boron source after keeping the temperature 15min at 750 DEG C, and then opening circuit vibrating device makes conjunction
Golden liquid is sufficiently mixed, and is then cooled to 650 DEG C with the rate of 8 DEG C/min, is added deslagging agent in melt, adjust melt at
Point, it then cools to room temperature, obtains foamed aluminium precast body；
(3) solid solution and ageing treatment are carried out to foamed aluminium precast body, obtains the foamed aluminum materials with high-intensity magnetic field shielding properties
Material, the solid solution temperature are 620 DEG C, and the temperature of the ageing treatment is 200 DEG C, and the time of ageing treatment is 20min.
Embodiment 3
A kind of foamed aluminium material with high-intensity magnetic field shielding properties, it is described on the basis of the total weight of foamed aluminium material is 1
Foamed aluminium material with high-intensity magnetic field shielding properties includes：Magnesium 5.2wt%, niobium 0.15wt%, iron 0.23wt%, boron
0.08wt%, silicon 3.5wt%, carbon 0.05wt%, titanium 0.26wt%, surplus are aluminium.
The preparation method of the foamed aluminium material with high-intensity magnetic field shielding properties, includes the following steps：
(1) amino clay and dodecyldimethylamine oxide, dodecyl-dimethyl amine second lactone are stirred at 45 DEG C
1h is mixed, niobium oxide is then added, 4h is then stirred at 100 DEG C, 800 mesh sieve is then crossed, obtains additive powder；
(2) by foaming agent in atmosphere of inert gases, 40min is heated at 500 DEG C of temperature, the foaming agent is by hydrogenating
Titanium, calcium carbonate and zircoium hydride are 1 in mass ratio：0.5：0.8 composition；
Aluminium ingot is heated to melting in atmosphere of inert gases, foaming agent, silicon carbide and above-mentioned are then added into melt
Additive powder is proportionally added into magnesium ingot, boron source after keeping the temperature 10min at 800 DEG C, and then opening circuit vibrating device makes conjunction
Golden liquid is sufficiently mixed, and is then cooled to 660 DEG C with the rate of 5 DEG C/min, is added deslagging agent in melt, adjust melt at
Point, it then cools to room temperature, obtains foamed aluminium precast body；
(3) solid solution and ageing treatment are carried out to foamed aluminium precast body, obtains the foamed aluminum materials with high-intensity magnetic field shielding properties
Material, the solid solution temperature are 630 DEG C, and the temperature of the ageing treatment is 220 DEG C, and the time of ageing treatment is 25min.
Embodiment 4
A kind of foamed aluminium material with high-intensity magnetic field shielding properties, it is described on the basis of the total weight of foamed aluminium material is 1
Foamed aluminium material with high-intensity magnetic field shielding properties includes：Magnesium 12wt%, niobium 0.05wt%, iron 0.5wt%, boron 0.02wt%,
Silicon 8wt%, carbon 0.02wt%, titanium 0.36wt%, surplus are aluminium.
The preparation method of the foamed aluminium material with high-intensity magnetic field shielding properties, includes the following steps：
(1) amino clay and dodecyldimethylamine oxide, dodecyl-dimethyl amine second lactone are stirred at 45 DEG C
1.5h is mixed, niobium oxide is then added, 4h is then stirred at 80 DEG C, 800 mesh sieve is then crossed, obtains additive powder；
(2) by foaming agent in atmosphere of inert gases, 40min is heated at 500 DEG C of temperature, the foaming agent is by hydrogenating
Titanium, calcium carbonate and zircoium hydride are 1 in mass ratio：0.2：0.6 composition；
Aluminium ingot is heated to melting in atmosphere of inert gases, foaming agent, silicon carbide and above-mentioned are then added into melt
Additive powder is proportionally added into magnesium ingot, boron source after keeping the temperature 15min at 750 DEG C, and then opening circuit vibrating device makes conjunction
Golden liquid is sufficiently mixed, and is then cooled to 650 DEG C with the rate of 10 DEG C/min, is added deslagging agent in melt, adjust melt at
Point, it then cools to room temperature, obtains foamed aluminium precast body；
(3) solid solution and ageing treatment are carried out to foamed aluminium precast body, obtains the foamed aluminum materials with high-intensity magnetic field shielding properties
Material, the solid solution temperature are 620 DEG C, and the temperature of the ageing treatment is 210 DEG C, and the time of ageing treatment is 25min.
Embodiment 5
A kind of foamed aluminium material with high-intensity magnetic field shielding properties, it is described on the basis of the total weight of foamed aluminium material is 1
Foamed aluminium material with high-intensity magnetic field shielding properties includes：Magnesium 3wt%, niobium 0.28wt%, iron 0.2wt%, boron 0.1wt%, silicon
3wt%, carbon 0.08wt%, titanium 0.21wt%, surplus are aluminium.
The preparation method of the foamed aluminium material with high-intensity magnetic field shielding properties, includes the following steps：
(1) amino clay and dodecyldimethylamine oxide, dodecyl-dimethyl amine second lactone are stirred at 45 DEG C
1h is mixed, niobium oxide is then added, 4h is then stirred at 100 DEG C, 800 mesh sieve is then crossed, obtains additive powder；
(2) by foaming agent in atmosphere of inert gases, 40min is heated at 500 DEG C of temperature, the foaming agent is by titantium hydride
It is 1 in mass ratio with zircoium hydride：1 composition；
Aluminium ingot is heated to melting in atmosphere of inert gases, foaming agent, silicon carbide and above-mentioned are then added into melt
Additive powder is proportionally added into magnesium ingot, boron source after keeping the temperature 10min at 800 DEG C, and then opening circuit vibrating device makes conjunction
Golden liquid is sufficiently mixed, and is then cooled to 670 DEG C with the rate of 10 DEG C/min, is added deslagging agent in melt, adjust melt at
Point, it then cools to room temperature, obtains foamed aluminium precast body；
(3) solid solution and ageing treatment are carried out to foamed aluminium precast body, obtains the foamed aluminum materials with high-intensity magnetic field shielding properties
Material, the solid solution temperature are 630 DEG C, and the temperature of the ageing treatment is 200 DEG C, and the time of ageing treatment is 30min.
Test：Magnetic field shielding performance test, experimental result such as table 1 are carried out to the foamed aluminium material prepared by Examples 1 to 5
It is shown.
Table 1：
| Magnetic field intensity (mT) | Shield effectiveness (%) | |
| Embodiment 1 | 0.12 | 36.9% |
| Embodiment 2 | 0.13 | 42.5% |
| Embodiment 3 | 0.16 | 33.3% |
| Embodiment 4 | 0.12 | 31.5% |
| Embodiment 5 | 0.13 | 32.5% |
The basic principles and main features and the features of the present invention of the present invention have been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement is both fallen in the range of claimed invention.The scope of protection of present invention is by appended claims
And its equivalent thereof.
Claims (8)
1. a kind of foamed aluminium material with high-intensity magnetic field shielding properties, which is characterized in that the total weight with foamed aluminium material is 1 to be
Benchmark, the foamed aluminium material with high-intensity magnetic field shielding properties include：3~12wt% of magnesium, 0.05~0.28wt% of niobium, iron
0.2~0.5wt%, 0.02~0.1wt% of boron, 3~8wt% of silicon, 0.02~0.08wt% of carbon, titanium 0.21~0.36wt%, it is remaining
Amount is aluminium.
2. the foamed aluminium material according to claim 1 with high-intensity magnetic field shielding properties, which is characterized in that with foamed aluminum materials
On the basis of the total weight of material is 1, the foamed aluminium material with high-intensity magnetic field shielding properties includes：5.2~8.3wt% of magnesium, niobium
0.12~0.15wt%, 0.23~0.32wt% of iron, 0.03~0.08wt% of boron, 3.5~6.2wt% of silicon, carbon 0.03~
0.05wt%, 0.26~0.32wt% of titanium, surplus are aluminium.
3. the preparation method of the foamed aluminium material according to claim 1 or 2 with high-intensity magnetic field shielding properties, feature exist
In including the following steps：
(1) amino clay and dodecyldimethylamine oxide, dodecyl-dimethyl amine second lactone are stirred at 40~45 DEG C
0.5~1.5h is mixed, niobium oxide is then added, 3-4h is then stirred at 80-100 DEG C, 800 mesh sieve is then crossed, obtains additive powder
End；
(2) aluminium ingot is heated to melting in atmosphere of inert gases, foaming agent, silicon carbide are then added into melt and above-mentioned added
Add agent powder, after keeping the temperature 10~15min at 700~800 DEG C, be proportionally added into magnesium ingot, boron source, then opens circuit vibration dress
Setting makes alloy liquid be sufficiently mixed, and is then cooled to 650~670 DEG C with the rate of 5~10 DEG C/min, and slagging-off is added in melt
Agent adjusts melt ingredient, then cools to room temperature, obtain foamed aluminium precast body；
(3) solid solution and ageing treatment are carried out to foamed aluminium precast body, obtains the foamed aluminium material with high-intensity magnetic field shielding properties.
4. the preparation method of the foamed aluminium material according to claim 3 with high-intensity magnetic field shielding properties, which is characterized in that
The foaming agent is selected from least one of titantium hydride, calcium carbonate and zircoium hydride.
5. the preparation method of the foamed aluminium material according to claim 4 with high-intensity magnetic field shielding properties, which is characterized in that
The foaming agent includes titantium hydride, calcium carbonate and zircoium hydride, and the mass ratio of the titantium hydride, calcium carbonate and zircoium hydride is 1：(0.2
~0.5)：(0.6~0.8).
6. the preparation method of the foamed aluminium material according to claim 3 with high-intensity magnetic field shielding properties, which is characterized in that
Further include the pretreating process of foaming agent, the pretreating process of the foaming agent is：By foaming agent in atmosphere of inert gases,
30-40min is heated at 480~500 DEG C of temperature.
7. the preparation method of the foamed aluminium material according to claim 3 with high-intensity magnetic field shielding properties, which is characterized in that
The solid solution temperature is 620~630 DEG C.
8. the preparation method of the foamed aluminium material with high-intensity magnetic field shielding properties according to claim 3 or 7, feature exist
In the temperature of the ageing treatment is 200~230 DEG C, and the time of ageing treatment is 20~30min.
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Application publication date: 20180727 |