CN114029497A - Preparation of high-specific gravity tungsten nickel cobalt nano powder and alloy with uniform element distribution and small particle size - Google Patents
Preparation of high-specific gravity tungsten nickel cobalt nano powder and alloy with uniform element distribution and small particle size Download PDFInfo
- Publication number
- CN114029497A CN114029497A CN202111323520.2A CN202111323520A CN114029497A CN 114029497 A CN114029497 A CN 114029497A CN 202111323520 A CN202111323520 A CN 202111323520A CN 114029497 A CN114029497 A CN 114029497A
- Authority
- CN
- China
- Prior art keywords
- powder
- tungsten
- nickel
- cobalt
- alloy
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000956 alloy Substances 0.000 title claims abstract description 22
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 21
- YCOASTWZYJGKEK-UHFFFAOYSA-N [Co].[Ni].[W] Chemical compound [Co].[Ni].[W] YCOASTWZYJGKEK-UHFFFAOYSA-N 0.000 title claims abstract description 20
- 230000005484 gravity Effects 0.000 title claims abstract description 17
- 238000009826 distribution Methods 0.000 title claims abstract description 13
- 239000011858 nanopowder Substances 0.000 title claims abstract description 13
- 239000002245 particle Substances 0.000 title claims abstract description 12
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- 239000000843 powder Substances 0.000 claims abstract description 35
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000001257 hydrogen Substances 0.000 claims abstract description 18
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 claims abstract description 16
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229910052721 tungsten Inorganic materials 0.000 claims abstract description 15
- 239000010937 tungsten Substances 0.000 claims abstract description 15
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 238000005245 sintering Methods 0.000 claims abstract description 12
- 239000002243 precursor Substances 0.000 claims abstract description 10
- ZNOKGRXACCSDPY-UHFFFAOYSA-N tungsten trioxide Chemical compound O=[W](=O)=O ZNOKGRXACCSDPY-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910052786 argon Inorganic materials 0.000 claims abstract description 9
- 238000006243 chemical reaction Methods 0.000 claims abstract description 8
- 238000010438 heat treatment Methods 0.000 claims abstract description 8
- 238000000465 moulding Methods 0.000 claims abstract description 7
- 239000012159 carrier gas Substances 0.000 claims abstract description 5
- 150000002431 hydrogen Chemical class 0.000 claims abstract description 5
- 239000010935 stainless steel Substances 0.000 claims abstract description 5
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 5
- 238000002156 mixing Methods 0.000 claims abstract 2
- 238000007873 sieving Methods 0.000 claims abstract 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 18
- 229910017052 cobalt Inorganic materials 0.000 claims description 11
- 239000010941 cobalt Substances 0.000 claims description 11
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 11
- 238000001816 cooling Methods 0.000 claims description 10
- 229910052759 nickel Inorganic materials 0.000 claims description 9
- 229910000531 Co alloy Inorganic materials 0.000 claims description 5
- 150000001868 cobalt Chemical class 0.000 claims description 5
- 150000002815 nickel Chemical class 0.000 claims description 5
- QGLKJKCYBOYXKC-UHFFFAOYSA-N nonaoxidotritungsten Chemical compound O=[W]1(=O)O[W](=O)(=O)O[W](=O)(=O)O1 QGLKJKCYBOYXKC-UHFFFAOYSA-N 0.000 claims description 5
- 238000003825 pressing Methods 0.000 claims description 5
- 239000002994 raw material Substances 0.000 claims description 5
- 229910001930 tungsten oxide Inorganic materials 0.000 claims description 5
- 239000010419 fine particle Substances 0.000 claims description 4
- DZKDPOPGYFUOGI-UHFFFAOYSA-N tungsten(iv) oxide Chemical group O=[W]=O DZKDPOPGYFUOGI-UHFFFAOYSA-N 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 3
- 239000011812 mixed powder Substances 0.000 claims description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims 1
- 229910002651 NO3 Inorganic materials 0.000 claims 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims 1
- LGQLOGILCSXPEA-UHFFFAOYSA-L nickel sulfate Chemical compound [Ni+2].[O-]S([O-])(=O)=O LGQLOGILCSXPEA-UHFFFAOYSA-L 0.000 claims 1
- 229910000363 nickel(II) sulfate Inorganic materials 0.000 claims 1
- 230000000630 rising effect Effects 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 4
- 238000010521 absorption reaction Methods 0.000 abstract description 3
- 229910021586 Nickel(II) chloride Inorganic materials 0.000 abstract description 2
- GVPFVAHMJGGAJG-UHFFFAOYSA-L cobalt dichloride Chemical compound [Cl-].[Cl-].[Co+2] GVPFVAHMJGGAJG-UHFFFAOYSA-L 0.000 abstract description 2
- 238000000227 grinding Methods 0.000 abstract description 2
- QMMRZOWCJAIUJA-UHFFFAOYSA-L nickel dichloride Chemical compound Cl[Ni]Cl QMMRZOWCJAIUJA-UHFFFAOYSA-L 0.000 abstract description 2
- 238000004663 powder metallurgy Methods 0.000 abstract description 2
- 238000003756 stirring Methods 0.000 abstract 2
- 239000008367 deionised water Substances 0.000 abstract 1
- 229910021641 deionized water Inorganic materials 0.000 abstract 1
- 238000001035 drying Methods 0.000 abstract 1
- 238000001704 evaporation Methods 0.000 abstract 1
- 238000011068 loading method Methods 0.000 abstract 1
- 239000004570 mortar (masonry) Substances 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 229910017709 Ni Co Inorganic materials 0.000 description 4
- 229910003267 Ni-Co Inorganic materials 0.000 description 4
- 229910003262 Ni‐Co Inorganic materials 0.000 description 4
- 238000000280 densification Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000006698 induction Effects 0.000 description 3
- 238000001000 micrograph Methods 0.000 description 3
- 238000004321 preservation Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000000975 co-precipitation Methods 0.000 description 2
- 238000005242 forging Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000005551 mechanical alloying Methods 0.000 description 2
- 238000003980 solgel method Methods 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910001030 Iron–nickel alloy Inorganic materials 0.000 description 1
- 238000002441 X-ray diffraction Methods 0.000 description 1
- OWUGOENUEKACGV-UHFFFAOYSA-N [Fe].[Ni].[W] Chemical compound [Fe].[Ni].[W] OWUGOENUEKACGV-UHFFFAOYSA-N 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 150000001805 chlorine compounds Chemical class 0.000 description 1
- UFMZWBIQTDUYBN-UHFFFAOYSA-N cobalt dinitrate Chemical compound [Co+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O UFMZWBIQTDUYBN-UHFFFAOYSA-N 0.000 description 1
- 229910001981 cobalt nitrate Inorganic materials 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- KBJMLQFLOWQJNF-UHFFFAOYSA-N nickel(ii) nitrate Chemical compound [Ni+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O KBJMLQFLOWQJNF-UHFFFAOYSA-N 0.000 description 1
- 150000002823 nitrates Chemical class 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Images
Classifications
-
- 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
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y40/00—Manufacture or treatment of nanostructures
Abstract
A preparation method of high specific gravity tungsten nickel cobalt nano powder and alloy with uniform element distribution and small particle size belongs to the technical field of shielding materials and powder metallurgy. The method comprises the following steps: dissolving tungsten trioxide, cobalt chloride and nickel chloride in deionized water, uniformly mixing and stirring, heating, stirring and evaporating to dryness, drying in an oven, grinding the dried agglomerates by using a mortar, and sieving to obtain precursor powder. And then, sending the precursor powder into an argon plasma torch through carrier gas hydrogen, collecting powder at each part after the reaction is finished, loading the powder into a stainless steel mold, performing cold press molding, and performing tube furnace sintering in hydrogen atmosphere to obtain the tungsten-nickel-cobalt heavy alloy block. The grain diameter of the tungsten-nickel-cobalt nano powder prepared by the invention is about 25nm, the relative density of the sintered tungsten-based heavy alloy is more than 99%, and the shielding test result shows that the linear absorption coefficient is 1.31 times of that of lead.
Description
Technical Field
The invention belongs to the technical field of powder metallurgy, and relates to a high-specific gravity tungsten nickel cobalt nano powder with uniform element distribution and small particle size and a preparation method of an alloy thereof.
Background
The tungsten-based high specific gravity alloy is a two-phase composite material which is composed of tungsten as a matrix and nickel, cobalt, iron, copper and the like as main binding phases, has the advantages of high strength, good plasticity, strong impact resistance and penetration capability, good corrosion resistance and high-temperature oxidation resistance, small thermal expansion coefficient, good electric and heat conductivity, strong ray absorption capability, capability of performing machining such as driving, milling, grinding, planing, drilling, tapping and the like, and capability of performing large deformation strengthening treatment such as rolling, rotary forging, forging and the like, and is widely applied to modern military industry and civil industry, such as armor piercing bullets and armor breaking bullets in the weapon industry, gyroscope outer edge rotors of navigation instruments in aviation, anti-ray shielding materials in the nuclear industry, anvil block materials and the like.
With the development of science and technology, the requirements on the performance of tungsten-based high-specific gravity alloy are higher, such as higher compactness, better mechanical property, ray shielding capability and the like. At present, the problems of large tungsten grains and uneven structure exist, research shows that the brittle phase precipitation probability of the tungsten-nickel-cobalt alloy is lower than that of the traditional tungsten-nickel-iron alloy, the cobalt is used for replacing iron to reduce the sintering wetting angle and improve the sintering densification speed, the nickel and cobalt can play a role in synergistic strengthening, and the tungsten-based high-specific gravity alloy with fine grains can be obtained after sintering. Therefore, the tungsten nickel cobalt nano powder with uniform element distribution and fine particle size and the preparation method of the alloy thereof are beneficial to the improvement of the performance of the tungsten-based high-specific gravity alloy.
At present, the traditional method for preparing the tungsten-based high-specific gravity alloy powder mainly comprises a mechanical alloying method, a chemical coprecipitation method, a sol-gel method and the like. The mechanical alloying method is easy to introduce impurity elements because the spherical tank and the spherulites are easy to wear, and the performance of the sintered alloy material is reduced. Although the chemical coprecipitation method has simple process, the powder is seriously agglomerated, thereby slowing down the sintering densification rate and leading the material to be difficult to achieve densification. The sol-gel method requires a long time, is simple to operate and is difficult to produce in batches. Compared with the traditional preparation method, the tungsten-nickel-cobalt nano powder can be synthesized in one step by utilizing the high-frequency induction thermal plasma reduction technology, has good element dispersibility, uniform structure, fine particle size and higher sintering reaction activity, and is more favorable for obtaining the high-proportion tungsten-nickel-cobalt alloy with uniform compactness and excellent performance.
Disclosure of Invention
The invention aims to provide a method for preparing high-specific gravity tungsten nickel cobalt nano powder with uniform element distribution and fine particle size and an alloy thereof, and solves the problems of uneven particle size distribution and easy agglomeration of the powder prepared by the traditional method. The high-specific gravity tungsten nickel cobalt nano powder with uniform element distribution and small particle size is prepared by adopting a high-frequency induction thermal plasma technology and taking tungsten oxide, cobalt salt and nickel salt as raw materials through high-frequency induction thermal plasma equipment, and the tungsten nickel cobalt heavy alloy with excellent performance is obtained through traditional sintering.
The invention relates to a method for preparing high-specific gravity tungsten nickel cobalt nano powder and alloy thereof with uniform element distribution and small particle size, which is characterized by comprising the following steps:
(1) according to a certain proportion, a certain amount of tungsten oxide, cobalt salt and nickel salt are mechanically mixed, and the mixed powder is sieved by an 80-mesh sieve, so that precursor powder is obtained.
(2) Sending the precursor powder obtained in the step (1) into an argon plasma torch through carrier gas hydrogen, and collecting powder at each part after the whole system is completely cooled after the reaction is finished; the whole system maintains a micro-negative pressure state by adjusting the induced air negative pressure in the charging process, and the stability of equipment parameters and plasma arc is ensured. After the reaction is finished and the whole system is completely cooled, collecting powder at each part, wherein the particle size of the powder is about 25 nm.
(3) And (3) putting the powder obtained in the step (2) into a stainless steel mold, and performing cold press molding.
(4) And (4) heating the pressed blank obtained in the step (3) to a certain temperature in a hydrogen atmosphere, preserving the temperature for a certain time, and then cooling the pressed blank along with a furnace or cooling the pressed blank to room temperature at a certain rate to obtain the tungsten-nickel-cobalt alloy.
In the step (1), the tungsten oxide is selected from tungsten dioxide, tungsten trioxide and the like, and the cobalt salt and the nickel salt can be sulfates, nitrates, chlorides and the like of cobalt and nickel. The sum of the nickel and cobalt in the three raw materials accounts for 0-20% of the total sum of the tungsten, the nickel and the cobalt, and the contents of the nickel and the cobalt are not 0 at the same time.
In the step (2), the power of the plasma device is 30KW, the hydrogen flow is 0.5-5L/h, the argon flow is 20-30L/h, and the powder feeding speed is 1-40 g/min.
In the step (3), the cold press molding pressing pressure is 200-600MPa, the pressure maintaining time is 0.5-10min, the optimal pressing pressure is 400MPa, and the optimal pressure maintaining time is 5 min.
In the step (4), the hydrogen flow is 50-300ml/min, the heating rate is 1-20 ℃/min, the heat preservation time is 0.5-3h, the sintering temperature is 1300-.
The invention has the beneficial effects that:
the invention provides a preparation method of high-specific gravity tungsten nickel cobalt nano powder with uniform element distribution and small particle size. The particle size of the prepared nano-grade powder is about 25nm, and the tungsten-based high-specific gravity alloy obtained by sintering has high density, fine crystal grains and uniform distribution of a tungsten matrix phase and a bonding phase. The relative density of the sintered tungsten-based heavy alloy is more than 99 percent, and the shielding test result shows that the linear absorption coefficient is 1.31 times of that of lead.
Description of the drawings (corresponding to example 1)
FIG. 1 is a scanning electron microscope image of W-Ni-Co powder.
FIG. 2 is an X-ray diffraction pattern of W-Ni-Co powder.
FIG. 3 is a transmission electron microscope image and an element distribution diagram of W-Ni-Co powder.
FIG. 4 is a scanning electron microscope image of the fracture of sintered W-Ni-Co heavy alloy.
Detailed Description
To further illustrate the invention, the following examples are given. These examples are merely illustrative of the present invention and are not intended to limit the scope of the invention as claimed.
Example 1
(1) According to the mass fraction W: ni: and Co is 90: 7: 3, the raw materials of tungsten trioxide, cobalt chloride and nickel chloride are mechanically and uniformly mixed and sieved by a sieve of 80 meshes, thereby obtaining precursor powder.
(2) And (2) feeding the precursor powder obtained in the step (1) into an argon plasma torch through carrier gas hydrogen, wherein the power of a plasma device is 30KW, the hydrogen flow is 2L/h, the argon is 20L/h, the powder feeding speed is 10g/min, and after the reaction is finished, completely cooling the whole system and collecting the powder at each part.
(3) And (3) putting the powder obtained in the step (2) into a stainless steel mold, and carrying out cold press molding, wherein the pressing pressure is 400Mpa, and the pressure maintaining time is 5 min.
(4) And (4) placing the pressed blank obtained in the step (3) into a burning boat, then sending into a tube furnace, sintering in hydrogen atmosphere, wherein the hydrogen flow is 250ml/min, heating to 1400 ℃ at the heating rate of 5 ℃/min, preserving heat for 60min, cooling to 600 ℃ at the speed of 10 ℃/min after heat preservation, and then cooling to room temperature along with the furnace to obtain the tungsten-based heavy alloy block.
Example 2
(1) According to the mass fraction W: ni: co 93: 5: 2, the raw materials of tungsten trioxide, cobalt nitrate and nickel nitrate are mechanically and uniformly mixed and sieved by a 140-mesh sieve, thereby obtaining precursor powder.
(2) And (2) feeding the precursor powder obtained in the step (1) into an argon plasma torch through carrier gas hydrogen, wherein the power of a plasma device is 30KW, the hydrogen flow is 3L/h, the argon is 25L/h, the powder feeding speed is 20g/min, and after the reaction is finished, completely cooling the whole system and collecting the powder at each part.
(3) And (3) putting the powder obtained in the step (2) into a stainless steel mold, and carrying out cold press molding under the pressure of 200MPa for 5 min.
(4) And (4) placing the pressed blank obtained in the step (3) into a burning boat, then sending into a tube furnace, sintering in hydrogen atmosphere, wherein the hydrogen flow is 300ml/min, heating to 1450 ℃ at the heating rate of 5 ℃/min, preserving heat for 60min, cooling to 600 ℃ at the speed of 5 ℃/min after heat preservation, and then cooling to room temperature along with the furnace to obtain the tungsten-based heavy alloy block.
Claims (7)
1. The preparation method of the high-specific gravity tungsten nickel cobalt nano powder and the alloy with uniform element distribution and fine particle size is characterized by comprising the following steps of:
(1) mechanically mixing a certain amount of tungsten oxide, cobalt salt and nickel salt according to a certain proportion, and sieving the mixed powder by using a 80-mesh sieve to obtain precursor powder;
(2) sending the precursor powder obtained in the step (1) into an argon plasma torch through carrier gas hydrogen, and collecting powder at each part after the whole system is completely cooled after the reaction is finished; the whole system maintains a micro-negative pressure state by adjusting the induced air negative pressure in the charging process, so that the stability of equipment parameters and a plasma arc is ensured; after the reaction is finished and the whole system is completely cooled, collecting the powder at each part.
2. The method of claim 1, wherein the powder particle size is 25 nm.
3. The method according to claim 1, wherein in step (1), the tungsten oxide is selected from tungsten dioxide, tungsten trioxide, etc., and the cobalt salt and nickel salt can be cobalt, nickel sulfate, nitrate, chloride, etc. The sum of the nickel and cobalt in the three raw materials accounts for 0-20% of the total sum of the tungsten, the nickel and the cobalt, and the contents of the nickel and the cobalt are not 0 at the same time.
4. The method according to claim 1, wherein in the step (2), the power of the plasma device is 30KW, the hydrogen flow rate is 0.5-5L/h, the argon flow rate is 20-30L/h, and the powder feeding rate is 1-40 g/min.
5. A preparation method of high specific gravity tungsten nickel cobalt alloy is characterized in that the high specific gravity tungsten nickel cobalt nano powder with uniform element distribution and small particle size prepared by the method of any one of claims 1 to 4 specifically comprises the following steps: putting the powder into a stainless steel mold, and performing cold press molding; and heating the obtained pressed blank to a certain temperature in a hydrogen atmosphere, preserving the heat for a certain time, and then cooling the pressed blank along with a furnace or cooling the pressed blank to room temperature at a certain speed to obtain the tungsten-nickel-cobalt alloy.
6. The method according to claim 5, wherein the cold press molding pressing pressure is 200MPa and 600MPa, the dwell time is 0.5-10min, the optimal pressing pressure is 400MPa, and the optimal dwell time is 5 min.
7. The method as claimed in claim 5, wherein the hydrogen flow rate is 50-300ml/min, the temperature rising rate is 1-20 ℃/min, the holding time is 0.5-3h, the sintering temperature is 1300-.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111323520.2A CN114029497A (en) | 2021-11-09 | 2021-11-09 | Preparation of high-specific gravity tungsten nickel cobalt nano powder and alloy with uniform element distribution and small particle size |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111323520.2A CN114029497A (en) | 2021-11-09 | 2021-11-09 | Preparation of high-specific gravity tungsten nickel cobalt nano powder and alloy with uniform element distribution and small particle size |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114029497A true CN114029497A (en) | 2022-02-11 |
Family
ID=80137044
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111323520.2A Pending CN114029497A (en) | 2021-11-09 | 2021-11-09 | Preparation of high-specific gravity tungsten nickel cobalt nano powder and alloy with uniform element distribution and small particle size |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114029497A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007211333A (en) * | 2006-02-13 | 2007-08-23 | Sumitomo Metal Mining Co Ltd | Tungsten ultrafine powder and production method therefor |
| CN101407014A (en) * | 2008-10-28 | 2009-04-15 | 北京钨钼材料厂 | Manufacturing method of tungsten-yttrium electrode |
| JP2010084199A (en) * | 2008-09-30 | 2010-04-15 | Nisshin Seifun Group Inc | METHOD FOR PRODUCING FINE PARTICLE OF Ni-W-BASED ALLOY, AND METHOD FOR PRODUCING FINE PARTICLE OF Ni-W ALLOY |
| CN108486398A (en) * | 2018-05-29 | 2018-09-04 | 昆明理工大学 | A kind of preparation method of W-Co carbide hard metals |
| RU2707455C1 (en) * | 2019-01-18 | 2019-11-26 | Федеральное государственное бюджетное учреждение науки Институт металлургии и материаловедения им. А.А. Байкова Российской академии наук (ИМЕТ РАН) | Tungsten-based pseudoalloy powder and method of its production |
| CN111036931A (en) * | 2019-12-04 | 2020-04-21 | 上大新材料(泰州)研究院有限公司 | Tungsten-cobalt alloy powder and preparation method thereof |
| CN113106281A (en) * | 2021-04-08 | 2021-07-13 | 北京工业大学 | Preparation method of yttrium oxide doped tungsten-based nano composite powder and alloy thereof |
-
2021
- 2021-11-09 CN CN202111323520.2A patent/CN114029497A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007211333A (en) * | 2006-02-13 | 2007-08-23 | Sumitomo Metal Mining Co Ltd | Tungsten ultrafine powder and production method therefor |
| JP2010084199A (en) * | 2008-09-30 | 2010-04-15 | Nisshin Seifun Group Inc | METHOD FOR PRODUCING FINE PARTICLE OF Ni-W-BASED ALLOY, AND METHOD FOR PRODUCING FINE PARTICLE OF Ni-W ALLOY |
| CN101407014A (en) * | 2008-10-28 | 2009-04-15 | 北京钨钼材料厂 | Manufacturing method of tungsten-yttrium electrode |
| CN108486398A (en) * | 2018-05-29 | 2018-09-04 | 昆明理工大学 | A kind of preparation method of W-Co carbide hard metals |
| RU2707455C1 (en) * | 2019-01-18 | 2019-11-26 | Федеральное государственное бюджетное учреждение науки Институт металлургии и материаловедения им. А.А. Байкова Российской академии наук (ИМЕТ РАН) | Tungsten-based pseudoalloy powder and method of its production |
| CN111036931A (en) * | 2019-12-04 | 2020-04-21 | 上大新材料(泰州)研究院有限公司 | Tungsten-cobalt alloy powder and preparation method thereof |
| CN113106281A (en) * | 2021-04-08 | 2021-07-13 | 北京工业大学 | Preparation method of yttrium oxide doped tungsten-based nano composite powder and alloy thereof |
Non-Patent Citations (1)
| Title |
|---|
| 陈颢等: "《等离子束表面冶金强化硬面材料设计、制备及性能》", vol. 1, 冶金工业出版社, pages: 25 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104630532B (en) | A kind of preparation method of carbide and rare earth oxide complex intensifying carefully brilliant tungsten material | |
| CN100411779C (en) | Prepn process of composite W-Cu powder for preparing high density alloy | |
| CN110560700B (en) | Method for preparing high-density ultrafine-grained rare earth oxide doped tungsten alloy | |
| CN108080649B (en) | Method for preparing superfine iron powder by low-temperature hydrocarbon duplex reduction | |
| CN113579246B (en) | Preparation method of nano high-entropy alloy powder | |
| WO2021027824A1 (en) | Tungsten-base alloy material and preparation method therefor | |
| CN109261980B (en) | Preparation method of tungsten powder for high-density alloy | |
| Hu et al. | Refined microstructure and enhanced mechanical properties in Mo-Y2O3 alloys prepared by freeze-drying method and subsequent low temperature sintering | |
| CN103924111B (en) | The preparation method of a kind of Wimet nanometer particle size powder and high performance sintered block materials | |
| CN102424919A (en) | Method for preparing carbon nanotube reinforced aluminum-based composite material | |
| CN105154702A (en) | Aluminum-based amorphous/high-entropy alloy composite and preparation method thereof | |
| CN106216705A (en) | A kind of preparation method of 3D printing fine grained simple substance globular metallic powder | |
| CN113106281B (en) | Preparation method of yttrium oxide doped tungsten-based nano composite powder and alloy thereof | |
| CN105441765B (en) | Bullet high-specific gravity tungsten alloy and preparation method thereof | |
| CN113073250B (en) | Preparation method of high-melting-point high-entropy soft magnetic alloy | |
| CN112222418B (en) | Method for preparing nano tungsten powder by regulating nucleation and growth processes and application | |
| CN112831733B (en) | Amorphous coated Y2O3Composite material and powder preparation method thereof | |
| CN105063457A (en) | Nano-graphite compounded high-capacity RE-Mg-Ni-based hydrogen storage material and preparation method thereof | |
| CN114293051B (en) | Preparation method of high-temperature softening resistant high-strength high-conductivity copper-based composite material formed part | |
| CN111041318A (en) | Tungsten-copper alloy and preparation method thereof | |
| Zhou et al. | Effect of sodium carbonate on phase transformation of high-magnesium laterite ore | |
| CN103331451A (en) | Method for preparing aluminum oxide (Al2O3) dispersed and strengthened copper alloy powder | |
| CN114029497A (en) | Preparation of high-specific gravity tungsten nickel cobalt nano powder and alloy with uniform element distribution and small particle size | |
| CN110066952B (en) | Preparation method of zirconium oxide reinforced molybdenum alloy bar | |
| CN106399742A (en) | Cu-NbC nanometer dispersion strengthened copper alloy and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |