CN112756603B - Aluminum-based alloy powder and preparation method and application thereof - Google Patents
Aluminum-based alloy powder and preparation method and application thereof Download PDFInfo
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- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 100
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 92
- 239000000843 powder Substances 0.000 title claims abstract description 76
- 239000000956 alloy Substances 0.000 title claims abstract description 59
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 58
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 57
- 229910021389 graphene Inorganic materials 0.000 claims abstract description 32
- 238000000498 ball milling Methods 0.000 claims abstract description 30
- 239000002994 raw material Substances 0.000 claims abstract description 7
- 238000005275 alloying Methods 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims description 12
- 229910000838 Al alloy Inorganic materials 0.000 claims description 11
- 239000007788 liquid Substances 0.000 claims description 11
- 235000011837 pasties Nutrition 0.000 claims description 10
- 238000003860 storage Methods 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 8
- 238000010146 3D printing Methods 0.000 claims description 6
- 239000002904 solvent Substances 0.000 claims description 5
- 238000011049 filling Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 4
- 239000004411 aluminium Substances 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 claims description 3
- 238000010924 continuous production Methods 0.000 claims 2
- 229910002804 graphite Inorganic materials 0.000 abstract description 8
- 239000010439 graphite Substances 0.000 abstract description 8
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 abstract description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 2
- 239000011248 coating agent Substances 0.000 abstract description 2
- 238000000576 coating method Methods 0.000 abstract description 2
- 239000002270 dispersing agent Substances 0.000 abstract description 2
- 238000000265 homogenisation Methods 0.000 abstract description 2
- 239000001257 hydrogen Substances 0.000 abstract description 2
- 229910052739 hydrogen Inorganic materials 0.000 abstract description 2
- 125000004435 hydrogen atom Chemical class [H]* 0.000 abstract description 2
- 239000012535 impurity Substances 0.000 abstract description 2
- 239000001301 oxygen Substances 0.000 abstract description 2
- 229910052760 oxygen Inorganic materials 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 18
- 230000008569 process Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 239000002131 composite material Substances 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- 239000011159 matrix material Substances 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 238000002156 mixing Methods 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- -1 aluminum alkene Chemical class 0.000 description 2
- 230000002180 anti-stress Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000001513 hot isostatic pressing Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 238000001291 vacuum drying Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000005234 chemical deposition Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 239000011156 metal matrix composite Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
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- 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
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y70/00—Materials specially adapted for additive manufacturing
-
- 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
- C22C1/04—Making non-ferrous alloys by powder metallurgy
- C22C1/0408—Light metal alloys
- C22C1/0416—Aluminium-based alloys
-
- 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
-
- 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
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
- B22F2009/043—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling by ball milling
-
- 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
- B22F2301/00—Metallic composition of the powder or its coating
- B22F2301/05—Light metals
- B22F2301/052—Aluminium
-
- 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
- B22F2302/00—Metal Compound, non-Metallic compound or non-metal composition of the powder or its coating
- B22F2302/40—Carbon, graphite
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Powder Metallurgy (AREA)
Abstract
The invention relates to aluminum-based alloy powder and a preparation method and application thereof. The aluminum-based alloy powder contains aluminum-based powder, multilayer graphene and a tissue formed by alloying the multilayer graphene and the aluminum-based powder; wherein the surface of the aluminum-based alloy powder is at least partially coated with a plurality of layers of graphene. According to the invention, low-cost graphite is used as a raw material instead of high-cost graphene, and the high-cost graphene is dried in a vacuum environment under the help of a dispersing agent by utilizing the homogenization function and the mechanical stripping function of ball milling, so that volatile harmful substances such as hydrogen, oxygen, chloride and the like in the aluminum-based powder are removed (or reduced), and the high-quality coating and alloying of the graphene and the aluminum-based powder are realized. Because air is isolated in the preparation process, the obtained finished product reduces the oxide impurity pollution, and has purer relative quality, better wettability and lower cost.
Description
Technical Field
The invention relates to aluminum-based alloy powder and a preparation method thereof, belonging to the field of alloy materials.
Background
The aluminum matrix composite has excellent strength and rigidity, high temperature resistance, wear resistance and low thermal expansion coefficient. At present, the reinforcing means of the aluminum matrix composite material adopts a fiber reinforcement body, which not only can improve the strength of the aluminum matrix composite material, but also can improve the plasticity of the aluminum matrix composite material.
Graphene is a novel two-dimensional material with the thickness of a monoatomic layer, is known to be the thinnest and the hardest nanometer material in the world, and therefore can be used as a filling material for modifying other materials. Due to the toughness, strength and surface activity of graphene, when used as a filler material, a chain bridge effect can be formed at a grain interface. The crystal grain interface of the base material is in a seamless connection form through the surface activity of the graphene. After the seamless connection is formed on the grain boundary in the base material, the grain boundary sliding phenomenon is reduced and the anti-stress capability is increased under the action of external force, so that the strength of the filled base material is enhanced along with the improvement of the anti-stress capability.
In the prior art, various forms of mixing processes are performed on finished graphene and aluminum particles. However, graphene has the problems of small size, large specific surface area, difficult dispersion and easy agglomeration, so that the existing graphene reinforced metal matrix composite material process has the problem of low yield and is difficult to realize large-scale production. Meanwhile, the production process of graphene is a complex, long-period and high-pollution process, and the conventional graphene is mainly produced in three ways: 1) Mechanically stripping graphene; 2) Carrying out chemical deposition on natural gas/methane gas and the like; 3) And reducing the graphite oxide. However, the existing graphene production processes have the following defects: the production process is long, the energy consumption is large, the environment is polluted, the cost is high, and the application of the composite material in enhancing other materials is limited.
Disclosure of Invention
Problems to be solved by the invention
In order to solve the above problems, the present invention provides an aluminum-based alloy powder and a method for preparing the same. According to the preparation method disclosed by the invention, the multilayer graphene can be fully dispersed in the aluminum-based alloy powder, meanwhile, the oxidation defect of the alloy can be prevented, and the high-quality and high-performance aluminum-based alloy powder can be obtained. The molded body obtained by using the aluminum-based alloy powder of the present invention has high tensile strength and high hardness.
Means for solving the problems
The invention provides an aluminum-based alloy powder, which contains aluminum-based powder, multilayer graphene and a tissue formed by alloying the multilayer graphene and the aluminum-based powder;
wherein the surface of the aluminum-based alloy powder is at least partially coated with multiple layers of graphene.
According to the aluminum-based alloy powder of the present invention, the average particle diameter of the aluminum-based alloy powder is 200 to 2000 mesh.
According to the aluminum-based alloy powder disclosed by the invention, the mass ratio of the multilayer graphene to the aluminum-based powder in the raw material of the aluminum-based alloy powder is 1.
According to the aluminum-based alloy powder of the present invention, the aluminum-based powder is aluminum metal powder or aluminum alloy powder.
The preparation method of the aluminum-based alloy powder comprises the following steps:
adding a solvent into graphite powder and aluminum-based powder to prepare a pasty liquid;
and putting the pasty liquid into a ball mill, closing the container, and carrying out continuous treatment to obtain the aluminum-based alloy powder.
According to the aluminum-based alloy powder, the purity of the graphite powder is more than 99.9wt%, and the graphite powder is flaky.
According to the aluminum-based alloy powder, the graphite powder is 3000-50000 meshes of graphite powder, and the aluminum-based powder is 150-1500 meshes of aluminum-based powder.
According to the aluminium-based alloy powder according to the invention, the continuous treatment comprises the following steps:
step A), ball milling for 12-48 hours at normal temperature and normal pressure;
step B), vacuumizing and ball-milling for 2-10 hours at normal temperature;
step C), heating to 180-540 ℃ under vacuum, and simultaneously performing ball milling;
step D), preserving heat and performing ball milling for 2-12 hours under vacuum, wherein the pressure of the vacuum is less than 1Pa;
and E), cooling, transferring to a vacuum tank for storage or directly using or filling protective gas for storage.
The invention also provides application of the aluminum-based alloy powder in 3D printing.
ADVANTAGEOUS EFFECTS OF INVENTION
According to the invention, low-cost graphite is used as a raw material instead of high-cost graphene, and the high-cost graphene is dried in a vacuum environment under the help of a dispersing agent by utilizing the homogenization effect and the mechanical stripping effect of ball milling, so that volatile harmful substances such as hydrogen, oxygen, chloride and the like in the aluminum-based powder are removed (or reduced), and the high-quality coating and alloying of the graphene and the aluminum-based powder are realized. Because air is isolated in the preparation process, the obtained finished product reduces the oxide impurity pollution, and has purer relative quality, better wettability and lower cost.
Drawings
FIG. 1: scanning electron microscope picture of the aluminum-based alloy powder-I obtained in example 1.
FIG. 2 is a schematic diagram: scanning electron microscope picture of the aluminum-based alloy powder-II obtained in example 2.
FIG. 3: scanning electron microscope pictures of aluminum powder without graphite addition.
Detailed Description
The present invention will be described in detail below. The technical features described below are explained based on typical embodiments and specific examples of the present invention, but the present invention is not limited to these embodiments and specific examples. It should be noted that:
in the present specification, the numerical range represented by the expression "numerical value a to numerical value B" means a range including the end points of numerical values a and B.
In the present specification, "plural" in "plural", and the like means a numerical value of 2 or more unless otherwise specified.
In the present specification, the term "substantially", "substantially" or "essentially" means that the error is less than 5%, or less than 3% or less than 1% compared to the relevant perfect or theoretical standard.
In the present specification, "%" denotes mass% unless otherwise specified.
In the present specification, the meaning of "may" includes both the meaning of performing a certain process and the meaning of not performing a certain process.
In this specification, "optional" or "optionally" means that the subsequently described event or circumstance may or may not occur, and that the description includes instances where the event occurs and instances where it does not.
Reference in the specification to "some specific/preferred embodiments," "other specific/preferred embodiments," "embodiments," and so forth, means that a particular element (e.g., feature, structure, property, and/or characteristic) described in connection with the embodiment is included in at least one embodiment described herein, and may or may not be present in other embodiments. In addition, it is to be understood that the described elements may be combined in any suitable manner in the various embodiments.
The invention provides an aluminum-based alloy powder, which contains aluminum-based powder, multilayer graphene and a tissue formed by alloying the multilayer graphene and the aluminum-based powder;
wherein the surface of the aluminum-based alloy powder is at least partially coated with a plurality of layers of graphene.
According to the aluminum-based alloy powder of the present invention, the average particle diameter of the aluminum-based alloy powder is 200 to 2000 mesh.
According to the aluminum-based alloy powder disclosed by the invention, the mass ratio of the multilayer graphene to the aluminum-based powder in the aluminum-based alloy powder raw material is (1).
According to the aluminum-based alloy powder of the present invention, the aluminum-based powder is aluminum metal powder or aluminum alloy powder.
The invention also provides a preparation method of the aluminum-based alloy powder, which comprises the following steps:
adding a solvent into graphite powder and aluminum-based powder to prepare a pasty liquid;
and (4) putting the pasty liquid into a ball mill, closing the container, and carrying out continuous treatment to obtain the aluminum-based alloy powder.
According to the preparation method, the purity of the graphite powder is more than 99.9wt%, and the graphite powder is flaky.
According to the preparation method, the graphite powder is 3000-50000 meshes of graphite powder, and the aluminum-based powder is 200-800 meshes of aluminum-based powder.
According to the preparation method of the invention, the continuous treatment comprises the following steps:
step A), ball milling for 12-48 hours at normal temperature and normal pressure;
step B), at normal temperature, vacuumizing and ball-milling for 2-10 hours to remove the solvent;
step C), heating to 180-540 ℃ under vacuum, and simultaneously carrying out ball milling;
step D), preserving heat and carrying out ball milling for 2-12 hours in vacuum, wherein the pressure of the vacuum is less than 1Pa;
and E), cooling, transferring to a vacuum tank for storage or directly using.
Examples
Embodiments of the present invention will be described in detail below with reference to examples, but those skilled in the art will appreciate that the following examples are only illustrative of the present invention and should not be construed as limiting the scope of the present invention. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products commercially available.
Example 1
The method comprises the following steps of mixing 800-mesh graphite powder 3g with the purity of 99.9wt% and 500-mesh 1060 aluminum powder 600g as raw materials, and then adding a proper amount of 99% absolute ethyl alcohol to prepare a pasty solution, wherein the mass ratio of the material liquid is about 1.
Putting the solution into an all-in-one machine for ball milling, vacuum drying and heat treatment, adding a stainless steel ball milling ball (ball material mass ratio is 12.
The continuous treatment process comprises the following steps:
a) Ball milling is carried out for 12 hours at normal temperature and normal pressure;
b) Gradually pumping to vacuum at normal temperature and ball-milling for 2 hours;
c) Heating at 1 degree/min and gradually vacuumizing and ball-milling to 460 ℃;
d) Ball milling at 460 ℃ under vacuum (< 1 Pa) for 2 hours;
e) Cooling and transferring to a vacuum tank for storage to obtain the aluminum-based alloy powder-I.
Example 2
The method comprises the following steps of mixing 30g of 300-mesh graphite powder with the purity of 99.9wt% and 600g of 500-mesh 1060 aluminum powder serving as raw materials, and then adding a proper amount of 99% absolute ethyl alcohol to prepare a pasty solution, wherein the mass ratio of the material liquid is about 1.
Putting the solution into an all-in-one machine for ball milling, vacuum drying and heat treatment, adding a stainless steel ball milling ball (ball material mass ratio is 12.
The continuous treatment process comprises the following steps:
a) Ball milling is carried out for 16 hours at normal temperature and normal pressure;
b) Gradually pumping to vacuum at normal temperature and ball-milling for 2 hours;
c) Heating at 0.5 deg.c/min while vacuum ball milling to 400 deg.c;
d) Ball milling at 400 ℃ under vacuum (< 1 Pa) for 2 hours;
e) Cooling and transferring into a vacuum tank for storage to obtain aluminum-based alloy powder-II.
Application example 1
And (3) continuously carrying out hot isostatic pressing on the aluminum-based alloy powder-I obtained in the example 1 to obtain an aluminum-olefin alloy-I, and carrying out a performance test on the aluminum-olefin alloy-I.
Comparative application example 1
The aluminum powder with the same composition and without graphite addition as that used in example 1 was subjected to hot isostatic pressing to obtain aluminum alloy-I, and the tensile strength of the aluminum-olefin alloy-I obtained in application example 1 was 342/221MPa, which was increased by 55% as compared with aluminum alloy-I.
Application example 2
The aluminum-based alloy powder-II obtained in example 2 is hot extruded into an aluminum-olefin alloy wire, and the aluminum-olefin alloy-II can be obtained by normal state storage after continuous extrusion into a wire without cooling.
Comparative application example 2
The aluminum powder with the same composition as that used in example 2 and without graphite addition was hot extruded into aluminum wire, and was continuously extruded into wire without cooling to obtain aluminum alloy-II.
The aluminum alloy is cast by adopting the alloy composition with the same components, the aluminum alkene alloy-II and the aluminum alloy-II are respectively used as intermediate alloys, the addition amount of 0.5wt% of the intermediate alloys is added into the aluminum molten liquid to produce the aluminum alloy, and the tensile strength of the aluminum alloy after the aluminum alkene alloy-II is added is improved by 27% compared with that of the aluminum alloy-2.
Application example 3
The aluminum-based alloy powder-I obtained in example 1 is used as a 3D printing material, and a 3D printer is used for printing a test piece which is marked as an aluminum-olefin alloy 3D-I.
Comparative application example 3
The same aluminum powder as that used in example 1, which was not added with graphite, was used as a 3D printing material, and a test piece was printed out with a 3D printer and recorded as aluminum alloy 3D-I.
Compared with the aluminum alloy 3D-I, the aluminum-olefin alloy 3D-I obtained in application example 3 has the tensile strength of 374/231MPa, which is improved by 62%.
Application example 4
The aluminum-based alloy powder-II obtained in the embodiment 2 is used as a 3D printing material, a test piece is printed by a 3D printer, and the test piece is marked as an aluminum-olefin alloy 3D-II.
Comparative application example 4
The aluminum powder with the same composition as that used in example 2 and without graphite addition was used as a 3D printing material, and a test piece was printed out with a 3D printer and recorded as an aluminum alloy 3D-II.
The aluminum alloy 3D-II obtained in application example 4 had hardness increased from HB90 to HB147, as compared with the aluminum alloy 3D-II.
It should be noted that, although the technical solutions of the present invention are described in the specific embodiments, those skilled in the art can understand that the present invention should not be limited thereto.
While embodiments of the present invention have been described above, the above description is illustrative, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen in order to best explain the principles of the embodiments, the practical application, or improvements made to the technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.
Claims (6)
1. The aluminum-based alloy powder is characterized by comprising aluminum-based powder, multilayer graphene and a tissue formed by alloying the multilayer graphene and the aluminum-based powder;
wherein at least part of the surface of the aluminum-based alloy powder is coated by multi-layer graphene, the average particle size of the aluminum-based alloy powder is 200-2000 meshes, the mass ratio of the multi-layer graphene to the aluminum-based powder in the raw material of the aluminum-based alloy powder is 1,
the aluminum-based alloy powder is prepared by the following preparation method:
adding a solvent into graphite powder and aluminum-based powder to prepare a pasty liquid;
putting the pasty liquid into a ball mill, closing a container, carrying out continuous treatment to obtain aluminum-based alloy powder,
the continuous process comprises the following steps:
step A), ball milling for 12-48 hours at normal temperature and normal pressure;
step B), vacuumizing and ball-milling for 2-10 hours at normal temperature;
step C), heating to 180-540 ℃ under vacuum, and simultaneously carrying out ball milling;
step D), preserving heat and carrying out ball milling for 2-12 hours in vacuum, wherein the pressure of the vacuum is less than 1Pa;
and E), cooling, transferring to a vacuum tank for storage or directly using or filling protective gas for storage.
2. The aluminum-based alloy powder according to claim 1, wherein the aluminum-based powder is an aluminum metal powder or an aluminum alloy powder.
3. A method for preparing an aluminium-based alloy powder according to claim 1 or 2, characterized in that it comprises the following steps:
adding a solvent into graphite powder and aluminum-based powder to prepare a pasty liquid;
putting the pasty liquid into a ball mill, closing a container, carrying out continuous treatment to obtain aluminum-based alloy powder,
the continuous process comprises the steps of:
step A), ball milling for 12-48 hours at normal temperature and normal pressure;
step B), vacuumizing and ball-milling for 2-10 hours at normal temperature;
step C), heating to 180-540 ℃ under vacuum, and simultaneously carrying out ball milling;
step D), preserving heat and performing ball milling for 2-12 hours under vacuum, wherein the pressure of the vacuum is less than 1Pa;
and E), cooling, transferring to a vacuum tank for storage or directly using or filling protective gas for storage.
4. A method of preparation according to claim 3, characterized in that the graphite powder is >99.9wt% pure and flaky.
5. The production method according to claim 3 or 4, wherein the graphite powder is 3000 to 50000 mesh graphite powder, and the aluminum-based powder is 150 to 1500 mesh aluminum-based powder.
6. Use of the aluminium based alloy powder according to claim 1 or 2 for 3D printing.
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| DE102012109404A1 (en) * | 2012-10-02 | 2014-04-03 | Byk-Chemie Gmbh | Graphene-containing suspension, process for their preparation, graphene plates and use |
| CN104556002B (en) * | 2014-12-19 | 2017-05-24 | 林前锋 | Method for preparing high-purity graphene |
| CN105063401A (en) * | 2015-06-25 | 2015-11-18 | 中国航空工业集团公司北京航空材料研究院 | Preparation method of aluminum base graphene alloy |
| CN106115679A (en) * | 2016-07-04 | 2016-11-16 | 济南大学 | A kind of low cost prepares the method for Graphene |
| CN108396166B (en) * | 2018-04-09 | 2019-10-29 | 西安交通大学 | A kind of preparation method of three-dimensional grapheme network structure high-strength abrasion-proof aluminum alloy |
| CN109266914B (en) * | 2018-12-10 | 2020-07-03 | 南昌航空大学 | Preparation method of graphene reinforced metal matrix composite material |
| CN109554566B (en) * | 2018-12-10 | 2020-01-10 | 南昌航空大学 | Method for improving performance of composite material by controlling structural damage of high-energy ball-milling powder-mixed graphene |
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