CN106180745B - A kind of foam copper powder and preparation method thereof - Google Patents
A kind of foam copper powder and preparation method thereof Download PDFInfo
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- CN106180745B CN106180745B CN201610776462.1A CN201610776462A CN106180745B CN 106180745 B CN106180745 B CN 106180745B CN 201610776462 A CN201610776462 A CN 201610776462A CN 106180745 B CN106180745 B CN 106180745B
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- cupric oxide
- copper powder
- foam copper
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/16—Making metallic powder or suspensions thereof using chemical processes
- B22F9/18—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds
- B22F9/20—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds starting from solid metal compounds
- B22F9/22—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds starting from solid metal compounds using gaseous reductors
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Powder Metallurgy (AREA)
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
Abstract
The invention discloses a kind of foam copper powders and preparation method thereof, are related to copper powder technical field.The foam copper powder of the present invention, it includes cupric oxide powder to prepare raw material, and the cupric oxide powder is mixed by the cupric oxide powder of different-grain diameter, and the grain size of the cupric oxide powder is 5~75 μm, and porosity is high, and aperture is small；The foam copper powder of the present invention, does not need or a small amount of pore creating material need to only be added, do not interfere with material property and the application of Copper substrate, and the foam copper powder porosity being prepared is high, and aperture is small.The foam copper powder of the present invention is the component that raw material is sintered out, and porosity is high, and aperture is smaller；And the cupric oxide powder mixing that its porosity and aperture can be distributed according to different-grain diameter be adjusted, the needs of to meet different product and client.The preparation method of the foam copper powder of the present invention, simple process and low cost is honest and clean, environmentally safe.
Description
Technical field
The present invention relates to copper powder technical fields more particularly to a kind of foam copper powder and preparation method thereof.
Background technology
Foam copper is a kind of novel and multifunctional material being evenly distributed with a large amount of connections or non-intercommunicating pore hole in Copper substrate,
Its specific surface area is high, while having the characteristics such as sound-absorbing, infiltration, filtering and energy absorption, in catalysis, chemical industry, the energy, thermal energy, ring
The fields such as guarantor, machinery all have huge market application potential.
The preparation method of foam copper product mainly has electrodeposition process, powder metallurgic method, solid-gas eutectic directional solidification method, with
And infiltration casting etc..Wherein, it is multiple all to there is technique in electrodeposition process, solid-gas eutectic directional solidification method and infiltration casting etc.
Miscellaneous, the shortcomings of technological parameter is more and uncontrollable, manufacturing cost is higher, and powder metallurgic method have it is simple for process, at low cost,
Aperture and controlled porosity, many advantages, such as mechanical property is good.Prepare the side of foam copper using powder metallurgic method both at home and abroad at present
In method, generally use pore creating material carries out pore-creating, and the pore creating material mainly selected has urea, sodium chloride, potassium carbonate.For preparing heat pipe
Foam copper needed for inner core, it is desirable that foam copper porosity is high, and aperture is small, and the foam copper prepared in the prior art, porosity
While high, aperture is often also larger.In addition, by the way that foam copper made of pore creating material sintering is added into metal powder, excessively
Pore creating material can remain in Copper substrate, to influence performance and the application of material.Therefore, a kind of novel foam copper powder is studied
Preparation method be very necessary.
Invention content
In view of the deficiencies of the prior art, one of the objects of the present invention is to provide a kind of foam copper powders, and porosity is high, hole
Diameter is small.
For this purpose, the present invention uses following technical scheme：
A kind of foam copper powder, it includes cupric oxide powder to prepare raw material, and the cupric oxide powder is mixed by the cupric oxide powder of different-grain diameter
It closes, cupric oxide powder is reduced in the reduction sintering furnace with reducing atmosphere, and internal oxygen atom is reduced away, is formed
Gaseous state H2O, gaseous state H2O sheds inside cupric oxide powder so that it is higher to restore sintered sintered copper porosity, and internal void
Aperture is smaller, and foam copper powder is made in sintered copper afterwards after crushing and screening again；The grain size of the cupric oxide powder is 5~75 μm, selects this
The cupric oxide powder pine of particle size range is than low, shrinking percentage is high, wherein different-grain diameter refers to that the grain size of cupric oxide powder can be millimeter
Grade, micron order, nanoscale.
Wherein, the raw material for preparing further includes pore creating material, and the mass ratio of the cupric oxide powder and the pore creating material is (8:2)
~(9:1), pore creating material addition is excessive, and pore creating material easily remains, and causes capillary not smooth, and pore creating material addition is very little, porosity effect
Bad, the amount that pore creating material is added is adjusted according to the requirement of porosity, for example, the cupric oxide powder and the pore creating material quality
Than being 8:2、8.5:1.5、9:1.
Wherein, the pore creating material is sodium chloride particle, one kind of urea granules and potassium carbonate particle or at least two.
The second object of the present invention is to provide a kind of preparation method of foam copper powder, and simple process and low cost is honest and clean, to ring
Border is pollution-free, does not need or a small amount of pore creating material need to only be added, do not interfere with material property and the application of Copper substrate, including following
Step：
1) cupric oxide powder of different-grain diameter is uniformly mixed, mixed oxidization copper powder is prepared；
2) mixed oxidization copper powder made from step 1) is put into reduction sintering furnace and carries out reduction sintering, sintered copper is made；
3) foam copper powder is obtained after sintered copper made from step 2) being crushed and sieved.
Wherein, the porosity of the sintered copper is 60~85%.
Wherein, the grain size of the foam copper powder obtained is 106~250 μm.
In step 2), the atmosphere in the reduction sintering furnace is reducing atmosphere, the temperature 750 that the reduction is sintered~
900 DEG C, the time of the reduction sintering is 40min or more.
Wherein, the reducing atmosphere is ammonia dissolving atmosphere, simple for process, the preparation convenience of ammonia dissolving atmosphere, it is preferable that
The volume ratio of hydrogen and nitrogen is 3 in ammonia dissolving atmosphere:1.
Compared with prior art, beneficial effects of the present invention are：The foam copper powder of the present invention, it includes copper oxide to prepare raw material
Powder, the cupric oxide powder are mixed by the cupric oxide powder of different-grain diameter, and the grain size of the cupric oxide powder is 5~75 μm, hole
Gap rate is high, and aperture is small；Cupric oxide powder is reduced in the reduction sintering furnace with reducing atmosphere, and internal oxygen atom is reduced out
It goes, forms gaseous state H2O, gaseous state H2O sheds inside cupric oxide powder so that it is higher and interior to restore sintered sintered copper porosity
Portion hole aperture is smaller, and foam copper powder is made in sintered copper afterwards after crushing and screening again.The foam copper powder of the present invention, does not need or only needs
A small amount of pore creating material is added, does not interfere with material property and the application of Copper substrate；In addition, the preparation side of the foam copper powder of the present invention
Method, simple process and low cost is honest and clean, environmentally safe, and the foam copper powder porosity being prepared is high, and aperture is small.
Specific implementation mode
The technical solution further illustrated the present invention below by specific implementation mode.
Unless specific instructions, various raw materials of the invention are commercially available buys, or is prepared according to the conventional method of this field
It obtains.
Embodiment 1
1) it is that mixed oxidization copper powder is prepared after 38 μm~75 μm cupric oxide powders mix by grain size；
2) mixed oxidization copper powder made from step 1) is put into reduction sintering furnace and carries out reduction sintering, restored in sintering furnace
Atmosphere be reducing atmosphere, setting reduction 850 DEG C of sintering temperature, reduction sintering time 40min or more, be made sintered copper, burn
The porosity for tying copper is 75%, and reducing atmosphere uses ammonia dissolving atmosphere, hydrogen therein, nitrogen volume ratio be 3:1；
3) sintered copper is crushed to and is screened out the foam copper powder that grain size is distributed at 106~250 μm.
Embodiment 2
1) it is 6.5 μm~18 μm cupric oxide powders by grain size, grain size is 18 μm~75 μm cupric oxide powders, urea granules by 2:7:
Mixed oxidization copper powder is made after 1 mass ratio mixing；
2) mixed oxidization copper powder made from step 1) is put into reduction sintering furnace and carries out reduction sintering, restored in sintering furnace
Atmosphere be reducing atmosphere, setting reduction 800 DEG C of sintering temperature, reduction sintering time 50min or more, be made sintered copper, burn
The porosity for tying copper is 83%, and reducing atmosphere uses ammonia dissolving atmosphere, hydrogen therein, nitrogen volume ratio be 3:1；
3) sintered copper is crushed to and is screened out the foam copper powder that grain size is distributed at 106~250 μm.
Embodiment 3
1) it is 8 in mass ratio in 18 μm~75 μm cupric oxide powders and sodium chloride particle by particle diameter distribution:It is made after 2 mixing
Mixed oxidization copper powder；
2) mixed oxidization copper powder made from step 1) is put into reduction sintering furnace and carries out reduction sintering, restored in sintering furnace
Atmosphere be reducing atmosphere, setting reduction 750 DEG C of sintering temperature, reduction sintering time 60min or more, be made sintered copper, burn
The porosity for tying copper is 65%, and reducing atmosphere uses ammonia dissolving atmosphere, hydrogen therein, nitrogen volume ratio be 3:1；
3) sintered copper is crushed to and is screened out the foam copper powder that grain size is distributed at 106~250 μm.
The performance of the foam copper powder of Examples 1 to 3 preparation is tested, experimental result is as shown in table 1.
Table 1
The foam copper powder of the present invention is the component that raw material is sintered out, and porosity is high, and aperture is smaller；And its porosity and
The cupric oxide powder mixing that aperture can be distributed according to different-grain diameter be adjusted, the needs of to meet different product and client.
Applicant states that the present invention illustrates detailed process equipment and the technological process of the present invention by above-described embodiment,
But the invention is not limited in above-mentioned detailed process equipment and technological processes, that is, it is above-mentioned detailed not mean that the present invention has to rely on
Process equipment and technological process could be implemented.Person of ordinary skill in the field it will be clearly understood that any improvement in the present invention,
The addition of equivalence replacement and auxiliary element to each raw material of product of the present invention, the selection etc. of concrete mode all fall within the present invention's
Within protection domain and the open scope.
Claims (6)
1. a kind of foam copper powder, which is characterized in that it includes cupric oxide powder to prepare raw material, the cupric oxide powder by different-grain diameter oxygen
Change copper powder to mix, the grain size of the cupric oxide powder is 5~75 μm；
The raw material for preparing further includes pore creating material, and the mass ratio of the cupric oxide powder and the pore creating material is（8:2）~（9:1）；
The pore creating material is sodium chloride particle, one kind of urea granules and potassium carbonate particle or at least two.
2. a kind of preparation method of foam copper powder as described in claim 1, which is characterized in that include the following steps：
1）The cupric oxide powder of different-grain diameter is uniformly mixed, mixed oxidization copper powder is prepared；
2）By step 1）Mixed oxidization copper powder obtained is put into reduction sintering furnace and carries out reduction sintering, and sintered copper is made；
3）By step 2）Sintered copper obtained is crushed and obtains foam copper powder after sieving.
3. preparation method according to claim 2, which is characterized in that the porosity of the sintered copper is 60~85%.
4. preparation method according to claim 2, which is characterized in that the grain size of the foam copper powder obtained be 106~
250μm。
5. preparation method according to claim 2, which is characterized in that step 2）In, the atmosphere in the reduction sintering furnace
Time for reducing atmosphere, 750~900 DEG C of the temperature of the reduction sintering, the reduction sintering is 40min or more.
6. preparation method according to claim 2, which is characterized in that the reducing atmosphere is ammonia dissolving atmosphere.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610776462.1A CN106180745B (en) | 2016-08-31 | 2016-08-31 | A kind of foam copper powder and preparation method thereof |
| PCT/CN2017/099008 WO2018041032A1 (en) | 2016-08-31 | 2017-08-25 | Copper foam powder and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610776462.1A CN106180745B (en) | 2016-08-31 | 2016-08-31 | A kind of foam copper powder and preparation method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN106180745A CN106180745A (en) | 2016-12-07 |
| CN106180745B true CN106180745B (en) | 2018-07-27 |
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| CN201610776462.1A Active CN106180745B (en) | 2016-08-31 | 2016-08-31 | A kind of foam copper powder and preparation method thereof |
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| WO (1) | WO2018041032A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2818716C1 (en) * | 2023-10-24 | 2024-05-03 | федеральное государственное бюджетное образовательное учреждение высшего образования "Казанский национальный исследовательский технологический университет" (ФГБОУ ВО "КНИТУ") | Method of producing foamed copper |
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| CN106180745B (en) * | 2016-08-31 | 2018-07-27 | 昆山德泰新材料科技有限公司 | A kind of foam copper powder and preparation method thereof |
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| CN114619031A (en) * | 2022-03-14 | 2022-06-14 | 北京理工大学 | Preparation method of micron-aperture foamy copper |
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| CN114888288A (en) * | 2022-05-11 | 2022-08-12 | 江苏科技大学 | Solid phase preparation method of porous metal copper |
| CN115194153A (en) * | 2022-06-30 | 2022-10-18 | 瑞声科技（南京）有限公司 | Preparation method of foam copper |
| CN115156553A (en) * | 2022-08-05 | 2022-10-11 | 江苏亚威创科源激光装备有限公司 | Closed-cell foam steel and laser additive manufacturing technology preparation method thereof |
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| RU2818716C1 (en) * | 2023-10-24 | 2024-05-03 | федеральное государственное бюджетное образовательное учреждение высшего образования "Казанский национальный исследовательский технологический университет" (ФГБОУ ВО "КНИТУ") | Method of producing foamed copper |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2018041032A1 (en) | 2018-03-08 |
| CN106180745A (en) | 2016-12-07 |
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