CN106623898A - Metal Cu powder and preparation method thereof - Google Patents
Metal Cu powder and preparation method thereof Download PDFInfo
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- CN106623898A CN106623898A CN201611174419.4A CN201611174419A CN106623898A CN 106623898 A CN106623898 A CN 106623898A CN 201611174419 A CN201611174419 A CN 201611174419A CN 106623898 A CN106623898 A CN 106623898A
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- copper
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- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- 239000000843 powder Substances 0.000 title abstract description 9
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims abstract description 55
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000001257 hydrogen Substances 0.000 claims abstract description 14
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 14
- 229910017604 nitric acid Inorganic materials 0.000 claims abstract description 13
- 239000000243 solution Substances 0.000 claims abstract description 13
- 229910052751 metal Inorganic materials 0.000 claims abstract description 11
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000002184 metal Substances 0.000 claims abstract description 10
- 239000012266 salt solution Substances 0.000 claims abstract description 7
- 239000002245 particle Substances 0.000 claims abstract description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 100
- 239000010949 copper Substances 0.000 claims description 54
- 229910052802 copper Inorganic materials 0.000 claims description 46
- 238000001556 precipitation Methods 0.000 claims description 15
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 14
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims description 14
- 239000012535 impurity Substances 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 13
- 238000000197 pyrolysis Methods 0.000 claims description 11
- 238000003756 stirring Methods 0.000 claims description 11
- 239000007864 aqueous solution Substances 0.000 claims description 10
- XTVVROIMIGLXTD-UHFFFAOYSA-N copper(II) nitrate Chemical class [Cu+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O XTVVROIMIGLXTD-UHFFFAOYSA-N 0.000 claims description 9
- 238000001035 drying Methods 0.000 claims description 7
- 238000005516 engineering process Methods 0.000 claims description 7
- 238000000498 ball milling Methods 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 5
- 238000010790 dilution Methods 0.000 claims description 5
- 239000012895 dilution Substances 0.000 claims description 5
- 206010013786 Dry skin Diseases 0.000 claims description 4
- 239000000428 dust Substances 0.000 claims description 4
- 239000007789 gas Substances 0.000 claims description 4
- 238000012360 testing method Methods 0.000 claims description 4
- -1 Nitric acid copper salt Chemical class 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 238000000227 grinding Methods 0.000 claims description 2
- 238000003801 milling Methods 0.000 claims description 2
- 239000013049 sediment Substances 0.000 claims 1
- 238000010146 3D printing Methods 0.000 abstract description 2
- 239000002244 precipitate Substances 0.000 abstract description 2
- 229910010293 ceramic material Inorganic materials 0.000 abstract 1
- 239000000047 product Substances 0.000 description 8
- 239000000463 material Substances 0.000 description 6
- 239000011195 cermet Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920002472 Starch Polymers 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005202 decontamination Methods 0.000 description 1
- 230000003588 decontaminative effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000004663 powder metallurgy Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000010561 standard procedure Methods 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
Classifications
-
- B22F1/0003—
-
- 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
-
- 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
- B22F9/24—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds starting from liquid metal compounds, e.g. solutions
-
- 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
- B22F9/30—Making metallic powder or suspensions thereof using chemical processes with decomposition of metal compounds, e.g. by pyrolysis
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C9/00—Alloys based on copper
- C22C9/06—Alloys based on copper with nickel or cobalt as the next major constituent
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
Abstract
Metal Cu powder comprises components in percentage by mass as follows: 65%-75% of Cu and 25%-35% of Co. A preparation method of the metal Cu powder comprises steps as follows: a Cu salt solution is prepared from a pretreated Cu plate by dissolving in nitric acid, then Cu is precipitated by adding an ethylene glycol solution, the Cu precipitate is washed, dried and placed into a reduction furnace to be subjected to reduction under hydrogen atmosphere shielding, and high-purity Cu powder is prepared. The Cu powder has the characteristics of uniform particle, good flowing property, high apparent density, stable quality and the like, is suitable for serving as a metal ceramic material and is applicable to 3D printing equipment.
Description
Technical field
The invention belongs to metal powder metallurgy technical field, specifically a kind of copper powder and preparation method thereof.
Background technology
In recent years, with material technology fast development, in terms of material technology and cermet material is increased, due to copper powder
There is small-size effect, show the features such as interfacial effect, so that copper powder has higher surface-active, good conduction and leads
Hot property, market constantly rises to the demand of high-quality copper powder, makes institute of metal dust producer extensive concern.
At present, the preparation method of high-purity copper powder has a lot, but main with atomization, electrolysis, mechanical crushing method, reducing process
Etc. based on.
The content of the invention
It is an object of the invention to provide a kind of method flow is short, low cost, copper powder particle size is thin, and purity is high, good dispersion
Simple preparation method.
For achieving the above object, the technical solution used in the present invention is：
First pretreated copper coin is dissolved in salpeter solution, spent glycol solution precipitation after decontamination is refiltered, then will
Washing of precipitate, drying, are then pyrolyzed under hydrogen reducing atmosphere, finally crush reduzate, sieve prepared high-purity copper powder.
A kind of copper powder, it is characterised in that by mass percentage, including following components：
Cu:65-75%；Co:25-35%；
Granularity：270-325 mesh >=6.13%；
Mobility：12.32-12.47s；
Apparent density is 2.175-2.413g/cm3.
A kind of preparation method of copper powder, by mass percentage, comprises the following steps：
1）The copper coin for making pretreatment is dissolved in the aqueous solution of nitric acid of 60-70%, makes concentration for 1.55-1.65g/ml copper nitrates
The aqueous solution；
2）After copper nitrate aqueous solution is filtered, the removal of impurity is gone to add the ethylene glycol solution that percentage by weight is 30-40%, fully
Stirring makes to obtain copper precipitation after its reaction；
3）After washing copper precipitation, 60-120 minutes are clarified, then be placed in after drying in reduction furnace, it is 350-485 C to control temperature,
After hydrogen atmosphere regulation and control lower pyrolysis reduction 110-130 minutes, by step 2）Product after the reduction for acquiring is broken using ball mill
Broken, grinding, and with the metal woven screen of 270 mesh, it is the copper powder below 270 mesh to screen out particle diameter, obtains a copper reduction；
4）Copper reduction is reapposed in reduction furnace, and controls temperature for 540-580 C, under hydrogen atmosphere regulation and control
Pyrolysis reduction 120-160 minutes, the secondary reduction product of acquisition is placed on into ball milling crusher machine, and collects the copper powder after crushing
Grain, and the metal net using 270-325 mesh screens out the copper powder that particle diameter is 45-53 μm, that is, copper powder is obtained.
Described step 1）Pretreatment is to need removal of impurities to process on copper coin surface, removal of impurities pretreating process be copper coin is placed in it is dilute
In nitric acid or dilute sulfuric acid aqueous solution, dust technology, the weight percent concentration of dilute sulfuric acid are 10-15%.
Described step 3）With step 4）In, the milling time of the agitating ball mill is the 160-200 seconds, and ball mill turns
Speed is 800-950 rev/min.
Described step 2）Middle ethylene glycol is (NH4)2C2O4、K2C2O4In one of them, the concentration of ethylene glycol solution is
Percentage by weight 30-40%, is stirred continuously and obtains copper precipitation.
Described step 3）Reducing gas in middle reduction furnace is H2、CO、CH4In at least one, reducing gas and copper sink
The mass ratio of starch is 1:0.2-0.4.
Described step 1）In, the strength by weight percentage of aqueous solution of nitric acid is 10-20%.
Described step 3）In, copper deposit is adopted and is washed with deionized.
The invention has the beneficial effects as follows：
The present invention using the method for glycol copper pyrolysis reduction, copper powder is it is critical only that for the reduction treatment of copper precipitation.Research
It was found that, the method for secondary reduction and the control of reduction temperature can produce considerable influence to the size distribution of copper powder.Therefore, control is gone back
Former temperature becomes the committed step in whole technique.
In the method for invention, crush this link and mobility, the apparent density even powder morphology of copper powder all can
Produce a very large impact.With high-energy stirring ball mill crusher machine, effectively increasing the mobility and apparent density of copper powder can subtract the present invention
It is few the patterns such as special-shaped powder, satellite powder occur.Pass through the Ball-milling Time of 160-200 seconds again to ensure granularity and high apparent density.
Copper powder prepared by the method for the present invention meets following technical requirements：
Cu+Co >=99.9% (weight/mass percentage composition)；
Granularity：270-325 mesh >=6.13% (weight/mass percentage composition)；
Mobility：12.32-12.47s；
Apparent density is 2.175-2.413g/cm3.
The copper powder purity of copper powder prepared by the present invention is high, steady quality, can reach the use for increasing material technology to copper powder
Require；Production equipment is simple, it is easy to operate.Granularity between 270-325 mesh have good mobility, high apparent density it is excellent
Benign energy.Go for cermet material, 3D printing etc. and increase material technical elements.
Description of the drawings
Fig. 1 is the process chart of the present invention.
Specific embodiment
It is exemplified below instantiation the present invention is expanded on further.
In the present invention, the detection of product powder property is carried out by following standard method：
ASTM B212-1999、ASTM B213-2013、ASTM B214-2016、ASTM B215-2015
Embodiment 1：
A kind of copper powder, it is characterised in that by mass percentage, including following components：
Cu:65%；Co:35%；
Embodiment 2：
A kind of copper powder, it is characterised in that by mass percentage, including following components：
Cu:70%；Co:30%；
Embodiment 3：
A kind of copper powder, it is characterised in that by mass percentage, including following components：
Cu:75%；Co:25%；Cu+Co≥99.9%；
Embodiment 4：Referring to Fig. 1, a kind of preparation method of copper powder, comprise the following steps：
1）First copper coin is placed in 10% dilute nitric acid solution and is pre-processed, remove surface impurity, it is molten in the nitric acid that concentration is 60%
Solution, makes the copper nitrate aqueous solution that concentration range is 1.55g/ml；
2）Copper nitrate aqueous solution is filtered, goes after the removal of impurity to add the ethylene glycol solution that concentration is 35%, be stirred continuously and obtain second two
Alcohol copper is precipitated；
3）Glycol copper precipitation is washed with deionized, and clarifies 60 minutes post-dryings, then glycol copper precipitation is placed in into reduction
In stove, it is 355 C to control temperature, reduces glycol copper 120 minutes under hydrogen atmosphere regulation and control；
By step 2）The reduzate of acquisition is ground 160 seconds with high-energy stirring ball mill machine, 800 revs/min of rotating speed, after 270 mesh sieves
A copper reduction is obtained after net；
4）The copper powder for once reducing is placed in reduction furnace, temperature is controlled for 550 C, 120 points of the reduction under hydrogen atmosphere regulation and control
Clock；
By the secondary reduction product high-energy stirring ball mill crusher machine 160 seconds for obtaining, after 270 mesh and 325 eye mesh screens, that is, make
Obtain copper powder；
Obtain the Testing index of copper powder：
Granularity：270-325 mesh >=6.13% (weight/mass percentage composition)；
Mobility：12.47s；
Apparent density is 2.413g/cm3。
Embodiment 5：A kind of preparation method of copper powder, comprises the following steps：
1）First copper coin is placed in 13% dilution heat of sulfuric acid and is pre-processed, remove surface impurity, then in the nitric acid that concentration is 65%
Dissolving, makes the nitric acid copper salt solution that concentration range is 1.60g/ml；
2）Nitric acid copper salt solution is filtered, goes after the removal of impurity to add the ethylene glycol solution that concentration is 35%, be stirred continuously and obtain second two
Alcohol copper is precipitated；
3）Glycol copper precipitation is washed with deionized, and clarifies 90 minutes post-dryings, then glycol copper precipitation is placed in into reduction
In stove, it is 400 C to control temperature, reduces glycol copper 125 minutes under hydrogen atmosphere regulation and control；Pyrolysis reduction product is high
Energy stirring ball-milling crusher machine 180 seconds, is obtained a copper reduction after 270 eye mesh screens；
4）The copper powder for once reducing is placed in reduction furnace, temperature is controlled for 560 C, 140 points of the reduction under hydrogen atmosphere regulation and control
Clock；
By pyrolysis reduction product high-energy stirring ball mill crusher machine 200 seconds, after 270 mesh and 325 eye mesh screens, that is, metal is obtained
Copper powder；
Obtain the Testing index of copper powder
Granularity：270-325 mesh >=6.20% (weight/mass percentage composition)
Mobility：12.41s
Apparent density is 2.312g/cm3。
A kind of embodiment 6, preparation method of copper powder, comprises the following steps：
1）First copper coin is placed in 15% dilution heat of sulfuric acid and is pre-processed, remove surface impurity, then in the nitric acid that concentration is 70%
Dissolving, makes the nitric acid copper salt solution that concentration range is 1.62g/ml；
2）Nitric acid copper salt solution is filtered, goes after the removal of impurity to add the ethylene glycol solution that concentration is 40%, be stirred continuously and obtain second two
Alcohol copper is precipitated；
3）Glycol copper precipitation is washed with deionized, and clarifies 120 minutes post-dryings, then glycol copper precipitation is placed in into reduction
In stove, it is 485 C to control temperature, reduces glycol copper 130 minutes under hydrogen atmosphere regulation and control；Pyrolysis reduction product is high
Energy stirring ball-milling crusher machine 180 seconds, is obtained a copper reduction after 270 eye mesh screens；
4）The copper powder for once reducing is placed in reduction furnace, temperature is controlled for 580 C, 160 points of the reduction under hydrogen atmosphere regulation and control
Clock；
By pyrolysis reduction product high-energy stirring ball mill crusher machine 200 seconds, after 270 mesh and 325 eye mesh screens, that is, metal is obtained
Copper powder；
Obtain the Testing index of copper powder：
Granularity：270-325 mesh >=6.75% (weight/mass percentage composition)；
Mobility：12.32s；
Apparent density is 2.175g/cm3。
Claims (10)
1. a kind of copper powder, it is characterised in that by mass percentage, including following components：
Cu:65-75%；Co:25-35%；
Granularity：270-325 mesh >=6.13%；
Mobility：12.32-12.47s；
Apparent density is 2.175-2.413g/cm3。
2. a kind of copper powder according to claim 1, it is characterised in that by mass percentage, including following components：
Cu:65%；Co:35%.
3. a kind of copper powder according to claim 1, it is characterised in that by mass percentage, including following components：
Cu:70%；Co:30%.
4. a kind of copper powder according to claim 1, it is characterised in that by mass percentage, including following components：
Cu:75%；Co:25%.
5. a kind of preparation method of copper powder, it is characterised in that by mass percentage, comprise the following steps：
1）The copper coin for making pretreatment is dissolved in the aqueous solution of nitric acid of 60-70%, makes concentration for 1.55-1.65g/ml copper nitrates
The aqueous solution；
2）After copper nitrate aqueous solution is filtered, the removal of impurity is gone to add the ethylene glycol solution that percentage by weight is 30-40%, fully
Stirring makes to obtain copper precipitation after its reaction；
3）After washing copper precipitation, 60-120 minutes are clarified, then be placed in after drying in reduction furnace, it is 350-485 C to control temperature,
After hydrogen atmosphere regulation and control lower pyrolysis reduction 110-130 minutes, by step 2）Product after the reduction for acquiring is broken using ball mill
Broken, grinding, and with the metal woven screen of 270 mesh, it is the copper powder below 270 mesh to screen out particle diameter, obtains a copper reduction；
4）Copper reduction is reapposed in reduction furnace, and controls temperature for 540-580 C, under hydrogen atmosphere regulation and control
Pyrolysis reduction 120-160 minutes, the secondary reduction product of acquisition is placed on into ball milling crusher machine, and collects the copper powder after crushing
Grain, and the metal net using 270-325 mesh screens out the copper powder that particle diameter is 45-53 μm, that is, copper powder is obtained.
6. a kind of preparation method of copper powder according to claim 5, it is characterised in that described step 1）Pretreatment
It is need removal of impurities to process on copper coin surface, removal of impurities pretreating process is that copper coin is placed in into dust technology or dilution heat of sulfuric acid, dust technology,
The strength by weight percentage 10-15% of dilution heat of sulfuric acid；
Described step 3）With step 4）The milling time of middle agitating ball mill is the 160-200 seconds, and drum's speed of rotation is
800-950 rev/min.
7. a kind of preparation method of copper powder according to claim 5, it is characterised in that described step 2）Middle second two
Alcohol is (NH4)2C2O4、K2C2O4In one of them.
8. a kind of preparation method of copper powder according to claim 5, it is characterised in that step 1）In middle reduction furnace
Reducing gas is H2、CO、CH4In at least one, the mass ratio of reducing gas and copper sediment is 1:0.2-0.4.
9. a kind of preparation method of copper powder according to claim 4, it is characterised in that described step 3）In, copper
Deposit is adopted and is washed with deionized.
10. the preparation method of a kind of copper powder according to claim 4, it is characterised in that comprise the following steps：
1）First copper coin is placed in 13% dilution heat of sulfuric acid and is pre-processed, remove surface impurity, then in the nitric acid that concentration is 65%
Dissolving, makes the nitric acid copper salt solution that concentration range is 1.60g/ml；
2）Nitric acid copper salt solution is filtered, goes after the removal of impurity to add the ethylene glycol solution that concentration is 35%, be stirred continuously and obtain second two
Alcohol copper is precipitated；
3）Glycol copper precipitation is washed with deionized, and clarifies 90 minutes post-dryings, then glycol copper precipitation is placed in into reduction
In stove, it is 400 C to control temperature, reduces glycol copper 125 minutes under hydrogen atmosphere regulation and control；Pyrolysis reduction product is high
Energy stirring ball-milling crusher machine 180 seconds, is obtained a copper reduction after 270 eye mesh screens；
4）The copper powder for once reducing is placed in reduction furnace, temperature is controlled for 560 C, 140 points of the reduction under hydrogen atmosphere regulation and control
Clock；
By pyrolysis reduction product high-energy stirring ball mill crusher machine 200 seconds, after 270 mesh and 325 eye mesh screens, that is, metal is obtained
Copper powder；
Obtain the Testing index of copper powder
Granularity：270-325 mesh >=6.20% (weight/mass percentage composition)
Mobility：12.41s
Apparent density is 2.312g/cm3。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611174419.4A CN106623898A (en) | 2016-12-19 | 2016-12-19 | Metal Cu powder and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611174419.4A CN106623898A (en) | 2016-12-19 | 2016-12-19 | Metal Cu powder and preparation method thereof |
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Family
ID=58823773
Family Applications (1)
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|---|---|---|---|
| CN201611174419.4A Pending CN106623898A (en) | 2016-12-19 | 2016-12-19 | Metal Cu powder and preparation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107971501A (en) * | 2017-11-29 | 2018-05-01 | 江西理工大学 | The method that secondary atmosphere reduction prepares superfine cupper powder |
| CN108360024A (en) * | 2018-01-24 | 2018-08-03 | 江南大学 | A kind of preparation method of 3D printing copper powder |
| CN108517412A (en) * | 2018-05-21 | 2018-09-11 | 阙南平 | Production system based on pyrolysis and the industrial copper powder of hydrogen embrittlement principle production |
| CN112828299A (en) * | 2020-12-24 | 2021-05-25 | 北京有研粉末新材料研究院有限公司 | Loose porous copper powder and preparation method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107971501A (en) * | 2017-11-29 | 2018-05-01 | 江西理工大学 | The method that secondary atmosphere reduction prepares superfine cupper powder |
| CN108360024A (en) * | 2018-01-24 | 2018-08-03 | 江南大学 | A kind of preparation method of 3D printing copper powder |
| CN108517412A (en) * | 2018-05-21 | 2018-09-11 | 阙南平 | Production system based on pyrolysis and the industrial copper powder of hydrogen embrittlement principle production |
| CN112828299A (en) * | 2020-12-24 | 2021-05-25 | 北京有研粉末新材料研究院有限公司 | Loose porous copper powder and preparation method thereof |
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