CN115255387B - Preparation method of graphene-coated copper powder particle reinforced aluminum matrix composite - Google Patents
Preparation method of graphene-coated copper powder particle reinforced aluminum matrix composite Download PDFInfo
- Publication number
- CN115255387B CN115255387B CN202210867212.4A CN202210867212A CN115255387B CN 115255387 B CN115255387 B CN 115255387B CN 202210867212 A CN202210867212 A CN 202210867212A CN 115255387 B CN115255387 B CN 115255387B
- Authority
- CN
- China
- Prior art keywords
- graphene
- powder
- ball milling
- coated copper
- copper powder
- 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.)
- Active
Links
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 110
- 229910021389 graphene Inorganic materials 0.000 title claims abstract description 110
- 239000002245 particle Substances 0.000 title claims abstract description 86
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 68
- 239000002131 composite material Substances 0.000 title claims abstract description 36
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 35
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 32
- 239000011159 matrix material Substances 0.000 title claims abstract description 14
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- 239000000843 powder Substances 0.000 claims abstract description 107
- 238000000498 ball milling Methods 0.000 claims abstract description 57
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 55
- 238000000034 method Methods 0.000 claims abstract description 45
- 230000008569 process Effects 0.000 claims abstract description 37
- 229910000881 Cu alloy Inorganic materials 0.000 claims abstract description 21
- 238000005516 engineering process Methods 0.000 claims abstract description 18
- 238000000713 high-energy ball milling Methods 0.000 claims abstract description 17
- 238000002844 melting Methods 0.000 claims abstract description 15
- 230000008018 melting Effects 0.000 claims abstract description 15
- 239000011812 mixed powder Substances 0.000 claims abstract description 7
- 238000002156 mixing Methods 0.000 claims abstract description 6
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 30
- 229910052786 argon Inorganic materials 0.000 claims description 15
- 238000000227 grinding Methods 0.000 claims description 14
- 229910045601 alloy Inorganic materials 0.000 claims description 13
- 239000000956 alloy Substances 0.000 claims description 13
- 229910052751 metal Inorganic materials 0.000 claims description 11
- 239000002184 metal Substances 0.000 claims description 11
- 238000001816 cooling Methods 0.000 claims description 10
- 238000011068 loading method Methods 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 10
- 229910017526 Cu-Cr-Zr Inorganic materials 0.000 claims description 8
- 229910017810 Cu—Cr—Zr Inorganic materials 0.000 claims description 8
- 229910018134 Al-Mg Inorganic materials 0.000 claims description 5
- 229910018467 Al—Mg Inorganic materials 0.000 claims description 5
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 5
- 238000009837 dry grinding Methods 0.000 claims description 5
- 239000001301 oxygen Substances 0.000 claims description 5
- 229910052760 oxygen Inorganic materials 0.000 claims description 5
- 239000012798 spherical particle Substances 0.000 claims description 5
- 239000000758 substrate Substances 0.000 claims description 5
- 238000001291 vacuum drying Methods 0.000 claims description 5
- 238000001238 wet grinding Methods 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 4
- 238000003892 spreading Methods 0.000 claims description 3
- 230000007480 spreading Effects 0.000 claims description 3
- 229910021364 Al-Si alloy Inorganic materials 0.000 claims 1
- 230000007547 defect Effects 0.000 abstract description 5
- 230000003014 reinforcing effect Effects 0.000 abstract description 4
- 230000002776 aggregation Effects 0.000 abstract description 3
- 238000004220 aggregation Methods 0.000 abstract description 2
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 230000005540 biological transmission Effects 0.000 description 7
- 229910018125 Al-Si Inorganic materials 0.000 description 4
- 229910018520 Al—Si Inorganic materials 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000007711 solidification Methods 0.000 description 3
- 230000008023 solidification Effects 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000004663 powder metallurgy Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
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
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/20—Direct sintering or melting
- B22F10/28—Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
-
- 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
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/12—Metallic powder containing non-metallic particles
-
- 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
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Powder Metallurgy (AREA)
Abstract
The invention discloses a preparation method of a graphene-coated copper powder particle reinforced aluminum matrix composite, which comprises the following steps: carrying out high-energy ball milling on graphene and copper alloy powder by utilizing a ball mill, and uniformly mixing to form graphene coated copper powder particle powder; carrying out low-energy ball milling on the graphene coated copper powder particles and the aluminum alloy powder by utilizing a ball mill, so that the graphene coated copper powder particles are uniformly distributed in the aluminum alloy powder; and forming the obtained mixed powder by adopting a laser powder bed melting technology, introducing a laser remelting scanning mode, and changing a remelting scanning process to obtain the graphene coated copper powder particle reinforced aluminum-based composite material. According to the invention, copper powder particles coated by graphene are used as a reinforcing phase, so that the problem of aggregation of graphene is avoided; the remelting scanning process of the LPBF technology is regulated, so that internal defects of tissues are reduced, the conductivity is remarkably improved, the process applicability is high, and the cost is low.
Description
Technical Field
The invention relates to the field of particle reinforced aluminum-based composite materials, in particular to a preparation method of a graphene coated copper powder particle reinforced aluminum-based composite material.
Background
With the development of the technology in the field of power transmission, the requirements on power transmission equipment are higher and higher, and the structures of internal parts of the power transmission equipment are also more and more complex. Today, aluminum, which is more resource-intensive and inexpensive, has been increasingly applied as a material for conductive media and power transmission equipment instead of conventional copper. Pure aluminum has good conductivity, but has insufficient mechanical properties, and is easy to break and lose efficacy under the action of load in the transmission process; the aluminum alloy has good mechanical properties, but has insufficient conductivity, and a large amount of resource loss can be caused in the conveying process. The electric conductivity and the mechanical property of the aluminum power transmission equipment are difficult to cooperate.
Graphene is a monoatomic layer two-dimensional honeycomb structure crystal with carbon atoms connected in an sp2 hybridized mode, and has various excellent properties. Graphene is a material known to have the best conductivity at normal temperature, and has excellent strength and toughness. Therefore, graphene can be used as a reinforcing phase to reinforce the aluminum alloy, and the cooperative reinforcement of the mechanical strength and the electric conductivity of the aluminum alloy is realized at lower cost, but because the graphene has large specific surface area and high surface energy, is easy to agglomerate and is unfavorable for being uniformly dispersed in an aluminum alloy matrix, the graphene-coated copper powder particles are used as the reinforcing phase to reinforce the aluminum alloy, and the graphene-coated copper powder particles can be uniformly dispersed in aluminum alloy powder by optimizing a ball milling process.
The traditional preparation methods of the graphene particle reinforced aluminum matrix composite material comprise a powder metallurgy method, a stirring casting method, an extrusion casting method and the like, and each method has limitations and cannot be universally applied. The traditional processing method has low forming temperature, which is not beneficial to improving the wettability between the graphene and the aluminum matrix material; parts with complex shapes are difficult to process, and the precision is difficult to ensure; the process is complex, the reinforced particles cannot be uniformly distributed, the structure uniformity is poor, the crystal grains are easy to coarsen, and the defect rate is high. The laser powder bed melting (LPBF) technology can directly obtain parts with high density, higher dimensional accuracy and good metallurgical bonding, and realize near-net forming of high-performance metal parts with complex structures. The technology has high forming temperature, and is beneficial to improving the wettability between graphene and aluminum alloy powder; meanwhile, the method has a fast solidification speed, and is favorable for refining the grain structure of the aluminum alloy.
The invention aims to seek an optimized ball milling process and a laser powder bed melting (LPBF) processing method to manufacture the graphene coated copper powder particle reinforced aluminum matrix composite material with excellent mechanical and conductive properties, which is suitable for the field of power transmission.
Disclosure of Invention
The invention aims to: in order to overcome the defects of the background technology, the invention discloses a preparation method of a graphene-coated copper powder particle reinforced aluminum-based composite material, which adopts an optimized ball milling process to obtain graphene-coated copper powder particles, can uniformly distribute the graphene-coated copper powder particles in aluminum alloy powder, avoids tissue defects caused by graphene agglomeration, is positioned at a high forming temperature and an extremely fast solidification speed in a laser powder bed melting technology, and can improve wettability between graphene and aluminum alloy powder and refine aluminum alloy grain structure, so that the conductivity of a sample is improved, and meanwhile, the overall mechanical strength of the sample is improved, so that the large-scale, rapid and effective preparation of the graphene-aluminum-based conductive composite material is possible.
The technical scheme is as follows: the invention discloses a preparation method of a graphene-coated copper powder particle reinforced aluminum matrix composite material, which comprises the following steps:
s1, carrying out high-energy ball milling on graphene and copper alloy powder by using a ball mill, and uniformly mixing to form graphene coated copper powder particle powder;
s2, carrying out low-energy ball milling on the graphene coated copper powder particles and the aluminum alloy powder by utilizing a ball mill, so that the graphene coated copper powder particles are uniformly distributed in the aluminum alloy powder;
and S3, forming the mixed powder obtained in the step S2 by adopting a laser powder bed melting technology, introducing a laser remelting scanning mode, and changing a remelting scanning process to obtain the graphene coated copper powder particle reinforced aluminum-based composite material.
Wherein the thickness of the graphene in S1 is 0.5-20nm, the sheet diameter of the graphene is 0.5-20 mu m, the copper alloy powder is Cu-Cr-Zr alloy powder, the particles are spherical, the particle size is 10-100 mu m, and the graphene is 0.5-10wt% of the copper alloy powder.
Further, the aluminum alloy powder in S2 comprises Al-Si (-Mg) alloy, al-Zn aluminum alloy and Al-Mg aluminum alloy, and is spherical particles with the particle size of 20-80 μm and the oxygen content of less than 300ppm.
Further, the ball mill is a planetary ball mill or a stirring ball mill.
Further, the high-energy ball milling in S1 comprises the following steps: loading graphene and copper alloy powder into a ball milling tank; vacuumizing, introducing argon, taking triethanolamine as a grinding aid, performing wet grinding in a ball milling process, wherein the adding amount of the grinding aid accounts for 1-3% of the mass fraction of the metal powder, the ball-material ratio is 8:1-12:1, the ball milling rotating speed is 200-500r/min, the high-energy ball milling is performed for 2-8h, the ball milling is performed alternately, the ball milling is stopped for cooling for 10min every 20min, and the vacuum drying is performed at 70-100 ℃ under the vacuum degree of-0.08 MPa for not less than 2h, so that the copper powder particles coated with the graphene are prepared.
Further, the low-energy ball milling in the step S2 comprises the following steps: loading copper powder particles coated by graphene and aluminum alloy powder into a ball milling tank; vacuumizing, introducing argon, performing dry grinding in the ball-milling process, wherein the ball-milling speed is 100-170r/min, performing low-energy ball milling for 1-5h, performing alternate rotation, and stopping rotating and cooling for 10min every 20min to obtain the aluminum alloy composite powder with uniformly distributed graphene coated copper powder particles.
Further, in the forming process of the laser powder bed melting technology in S3, argon is adopted for protection, and before powder spreading, the forming substrate is preheated to 100-150 ℃, and main processing parameters are as follows: laser power 180-260W, scanning speed: 800-1200mm/s, scanning interval: 80-100 μm, spot diameter: 100 μm, powder layer thickness: 30-40 μm;
the laser remelting scanning mode is to perform a secondary laser scanning process on the solidified layer, the laser power is 160-240W, other processing parameters are consistent with the first scanning, and the scanning path forms an included angle of 90 degrees with the first scanning.
Further, in the graphene-coated copper powder particle reinforced aluminum matrix composite, the graphene accounts for 0.1-1wt% of the total metal.
Working principle: according to the invention, copper powder particles coated by graphene are used as reinforcing particles, the aluminum-based composite powder prepared by adopting a low-energy ball milling process is not easy to agglomerate, the sphericity and the fluidity are good, the aluminum-based composite powder can meet the LPBF process requirements, smooth powder laying and powder feeding in the LPBF forming process are facilitated, and finally the graphene aluminum-based composite material with excellent electric conduction and mechanical properties can be prepared by adopting LPBF.
The beneficial effects are that: compared with the prior art, the invention has the advantages that:
1. graphene has very excellent conductivity and also has excellent strength and toughness. The method has the advantages that the copper powder particles coated by graphene are obtained by adopting a mode of combining a high-energy ball milling method and a low-energy ball milling method, the aggregation phenomenon of graphene can be avoided, and the copper powder particles can be uniformly dispersed in aluminum alloy powder, so that the graphene-aluminum-based composite material with excellent electric conduction and mechanical properties is obtained;
2. the copper powder particles are Cu-Cr-Zr alloy powder, and the Cu-Cr-Zr alloy powder has higher laser absorptivity compared with pure copper powder, and can absorb more energy to melt the alloy powder in a shorter time to obtain a powder molten pool. The Zr element in the Cu-Cr-Zr alloy powder can also react with the Al element in the aluminum alloy powder at the high forming temperature to generate reinforced phase particles Al 3 Zr, further enhancing the mechanical properties of the aluminum alloy;
3. the laser powder bed melting (LPBF) technology is adopted, and the forming temperature of a powder molten pool is high, so that the wettability between graphene and aluminum alloy powder can be improved, and the bonding strength between the graphene and the aluminum alloy powder can be enhanced; the solidification speed is extremely high, and the grain structure of the aluminum alloy can be thinned, so that the mechanical property of the graphene-aluminum-based composite material is improved;
4. the residual stress in the prepared graphene coated copper powder particle reinforced aluminum matrix composite component can be effectively reduced by adopting a laser remelting scanning mode, and meanwhile, the defects of internal spheroidization, pores, cracks and the like are reduced, and the compactness is improved.
Drawings
FIG. 1 is a schematic flow chart of the present invention;
fig. 2 is a schematic diagram of a mixed powder of graphene-coated copper powder particles and an aluminum alloy according to the present invention.
Detailed Description
The technical scheme of the invention is further described below with reference to the accompanying drawings and examples.
Example 1
Preparation of a 1# graphene coated copper powder particle reinforced aluminum matrix composite, as shown in fig. 1 and 2:
carrying out high-energy ball milling on graphene and copper alloy powder by adopting a planetary ball mill, and uniformly mixing to form graphene coated copper powder particle powder; wherein the thickness of the graphene is 0.5nm, the sheet diameter of the graphene is 0.5 mu m, the copper alloy powder is Cu-Cr-Zr alloy powder, the particles are spherical, the particle size is 10 mu m, and the graphene is 0.5wt% of the copper alloy powder.
The high-energy ball milling comprises the following steps: loading graphene and copper alloy powder into a ball milling tank; vacuumizing, introducing argon, taking triethanolamine as a grinding aid, performing wet grinding in the ball milling process, wherein the adding amount of the grinding aid accounts for 1% of the mass fraction of the metal powder, the ball-material ratio is 8:1, the ball milling rotating speed is 200r/min, the high-energy ball milling is performed for 2 hours, the alternating rotation is performed, the cooling is stopped for 10 minutes after 20 minutes of ball milling, and the graphene-coated copper powder particles are prepared by vacuum drying for 2 hours under the vacuum degree of-0.08 MPa at 70 ℃.
Carrying out low-energy ball milling on the graphene coated copper powder particles and the aluminum alloy powder by utilizing a ball mill, so that the graphene coated copper powder particles are uniformly distributed in the aluminum alloy powder; wherein the aluminum alloy powder comprises Al-Si (-Mg) alloy, al-Zn aluminum alloy and Al-Mg aluminum alloy, and is spherical particles with particle size of 20 μm and oxygen content of less than 300ppm.
The low-energy ball milling comprises the following steps: loading copper powder particles coated by graphene and aluminum alloy powder into a ball milling tank; and vacuumizing, introducing argon, performing dry grinding in the ball-milling process, wherein the ball-material ratio is 5:1, the ball-milling rotating speed is 100r/min, performing low-energy ball milling for 1h, alternately rotating, and cooling for 10min after 20min of ball milling, so as to obtain the aluminum alloy composite powder with uniformly distributed graphene coated copper powder particles.
Forming the obtained mixed powder by adopting a laser powder bed melting technology, introducing a laser remelting scanning mode, and changing a remelting scanning process to obtain the graphene coated copper powder particle reinforced aluminum-based composite material;
wherein, in the forming process of the laser powder bed melting technology, argon protection is adopted, and before powder laying, a forming substrate is preheated to 100 ℃, and main processing parameters are as follows: laser power 180W, scan speed: 800mm/s, scan pitch: 80 μm, spot diameter: 100 μm, powder layer thickness: 30 μm; the laser remelting scanning mode is to perform a secondary laser scanning process on the solidified layer, the laser power is 160W, other processing parameters are consistent with those of the first scanning, and a scanning path forms an included angle of 90 degrees with the first scanning.
In the obtained graphene-coated copper powder particle reinforced aluminum-based composite material, the graphene accounts for 0.1 weight percent of the total metal.
Example 2
Preparing a 2# graphene coated copper powder particle reinforced aluminum matrix composite:
carrying out high-energy ball milling on graphene and copper alloy powder by adopting a stirring ball mill, and uniformly mixing to form graphene coated copper powder particle powder; the thickness of the graphene is 20nm, the sheet diameter of the graphene is 20 mu m, the copper alloy powder is Cu-Cr-Zr alloy powder, the particles are spherical, the particle size is 100 mu m, and the graphene accounts for 10wt% of the copper alloy powder.
The high-energy ball milling comprises the following steps: loading graphene and copper alloy powder into a ball milling tank; vacuumizing, introducing argon, taking triethanolamine as a grinding aid, performing wet grinding in the ball milling process, wherein the adding amount of the grinding aid accounts for 3% of the mass fraction of the metal powder, the ball-material ratio is 12:1, the ball milling rotating speed is 500r/min, the high-energy ball milling is performed for 8 hours, the alternating rotation is performed, the cooling is stopped for 10 minutes after 20 minutes of ball milling, and the copper powder particles coated with graphene are prepared by performing vacuum drying at 100 ℃ and the vacuum degree of-0.08 MPa for 2.5 hours.
Carrying out low-energy ball milling on the graphene coated copper powder particles and the aluminum alloy powder by utilizing a ball mill, so that the graphene coated copper powder particles are uniformly distributed in the aluminum alloy powder; the aluminum alloy powder comprises Al-Si (-Mg) alloy, al-Zn aluminum alloy and Al-Mg aluminum alloy, and is spherical particles with the particle size of 80 μm and the oxygen content of less than 300ppm.
The low-energy ball milling comprises the following steps: loading copper powder particles coated by graphene and aluminum alloy powder into a ball milling tank; and vacuumizing, introducing argon, performing dry grinding in the ball-milling process, wherein the ball-material ratio is 8:1, the ball-milling rotating speed is 170r/min, the low-energy ball milling is performed for 5 hours, the alternating rotation is performed, and the cooling is stopped for 10 minutes every 20 minutes of ball milling, so that the aluminum alloy composite powder with uniformly distributed graphene coated copper powder particles is prepared.
And forming the obtained mixed powder by adopting a laser powder bed melting technology, introducing a laser remelting scanning mode, and changing a remelting scanning process to obtain the graphene coated copper powder particle reinforced aluminum-based composite material.
In the forming process of the laser powder bed melting technology, argon is adopted for protection, and before powder spreading, a forming substrate is preheated to 150 ℃, and main processing parameters are as follows: laser power 260W, scan speed: 1200mm/s, scan pitch: 100 μm, spot diameter: 100 μm, powder layer thickness: 40 μm; the laser remelting scanning mode is to perform a secondary laser scanning process on the solidified layer, the laser power is 240W, other processing parameters are consistent with those of the first scanning, and a scanning path forms an included angle of 90 degrees with the first scanning.
In the obtained graphene-coated copper powder particle reinforced aluminum-based composite material, the graphene accounts for 1 weight percent of the total metal.
Example 3
Preparation of 3# graphene coated copper powder particle reinforced aluminum matrix composite:
carrying out high-energy ball milling on graphene and copper alloy powder by adopting a planetary ball mill, and uniformly mixing to form graphene coated copper powder particle powder; the thickness of the graphene is 10nm, the sheet diameter of the graphene is 10 mu m, the copper alloy powder is Cu-Cr-Zr alloy powder, the particles are spherical, the particle size is 50 mu m, and the graphene is 5wt% of the copper alloy powder.
The high-energy ball milling comprises the following steps: loading graphene and copper alloy powder into a ball milling tank; vacuumizing, introducing argon, taking triethanolamine as a grinding aid, performing wet grinding in the ball milling process, wherein the adding amount of the grinding aid accounts for 2% of the mass fraction of the metal powder, the ball-material ratio is 10:1, the ball milling rotating speed is 350r/min, the high-energy ball milling is performed for 5h, the alternating rotation is performed, the cooling is stopped for 10min after 20min of ball milling, and the graphene-coated copper powder particles are prepared by vacuum drying for 3h under the vacuum degree of minus 0.08MPa at 85 ℃.
Carrying out low-energy ball milling on the graphene coated copper powder particles and the aluminum alloy powder by utilizing a ball mill, so that the graphene coated copper powder particles are uniformly distributed in the aluminum alloy powder; the aluminum alloy powder comprises Al-Si (-Mg) alloy, al-Zn aluminum alloy and Al-Mg aluminum alloy, and is spherical particles with particle size of 50 μm and oxygen content of less than 300ppm.
The low-energy ball milling comprises the following steps: loading copper powder particles coated by graphene and aluminum alloy powder into a ball milling tank; and vacuumizing, introducing argon, performing dry grinding in the ball grinding process, wherein the ball-material ratio is 6.5:1, the ball grinding rotating speed is 140r/min, performing low-energy ball grinding for 3 hours, and alternately rotating, and stopping rotating and cooling for 10 minutes every 20 minutes of ball grinding to obtain the aluminum alloy composite powder with uniformly distributed graphene coated copper powder particles.
And forming the obtained mixed powder by adopting a laser powder bed melting technology, introducing a laser remelting scanning mode, and changing a remelting scanning process to obtain the graphene coated copper powder particle reinforced aluminum-based composite material.
In the forming process of the laser powder bed melting technology, argon is adopted for protection, and before powder is paved, a forming substrate is preheated to 130 ℃, and main processing parameters are as follows: laser power 220W, scan speed: 1000mm/s, scan pitch: diameter of spot of 90 μm: 100 μm, powder layer thickness: 35 μm;
the laser remelting scanning mode is to perform a secondary laser scanning process on the solidified layer, the laser power is 200W, other processing parameters are consistent with those of the first scanning, and a scanning path forms an included angle of 90 degrees with the first scanning.
In the obtained graphene-coated copper powder particle reinforced aluminum-based composite material, the graphene accounts for 0.5 weight percent of the total metal.
Claims (1)
1. The preparation method of the graphene-coated copper powder particle reinforced aluminum matrix composite material is characterized by comprising the following steps of:
s1, carrying out high-energy ball milling on graphene and copper alloy powder by using a ball mill, and uniformly mixing to form graphene coated copper powder particle powder;
s2, carrying out low-energy ball milling on the graphene coated copper powder particles and the aluminum alloy powder by utilizing a ball mill, so that the graphene coated copper powder particles are uniformly distributed in the aluminum alloy powder;
s3, forming the mixed powder obtained in the S2 by adopting a laser powder bed melting technology, introducing a laser remelting scanning mode, and changing a remelting scanning process to obtain the graphene coated copper powder particle reinforced aluminum-based composite material;
the thickness of the graphene in the S1 is 0.5-20nm, the sheet diameter of the graphene is 0.5-20 mu m, the copper alloy powder is Cu-Cr-Zr alloy powder, the particles are spherical, the particle diameter is 10-100 mu m, and the graphene is 0.5-10wt% of the copper alloy powder;
the aluminum alloy powder in S2 comprises Al-Si alloy, al-Zn aluminum alloy and Al-Mg aluminum alloy, and is spherical particles with the particle size of 20-80 mu m and the oxygen content of less than 300ppm;
the ball mills in the S1 and the S2 are planetary ball mills or stirring ball mills;
the high-energy ball milling in S1 comprises the following steps: loading graphene and copper alloy powder into a ball milling tank; vacuumizing, introducing argon, taking triethanolamine as a grinding aid, performing wet grinding in a ball milling process, wherein the adding amount of the grinding aid accounts for 1-3% of the mass fraction of the metal powder, the ball-material ratio is 8:1-12:1, the ball milling rotating speed is 200-500r/min, high-energy ball milling is performed for 2-8h, the ball milling is performed alternately, each ball milling is performed for 20min, the cooling is stopped for 10min, and vacuum drying is performed at 70-100 ℃ under the vacuum degree of-0.08 MPa for not less than 2h to obtain graphene-coated copper powder particles;
the low-energy ball milling in S2 comprises the following steps: loading copper powder particles coated by graphene and aluminum alloy powder into a ball milling tank; vacuumizing, introducing argon, performing dry grinding in a ball-milling process, wherein the ball-milling speed is 100-170r/min, performing low-energy ball milling for 1-5h, and performing alternate rotation, and stopping rotating and cooling for 10min every 20min to obtain the aluminum alloy composite powder with uniformly distributed graphene coated copper powder particles;
in the forming process of the laser powder bed melting technology in the step S3, argon is adopted for protection, and before powder spreading, a forming substrate is preheated to 100-150 ℃, and main processing parameters are as follows: laser power 180-260W, scanning speed: 800-1200mm/s, scanning interval: 80-100 μm, spot diameter: 100 μm, powder layer thickness: 30-40 μm;
the laser remelting scanning mode is to perform a secondary laser scanning process on the solidified layer, wherein the laser power is 160-240W, other processing parameters are consistent with the first scanning, and a scanning path forms an included angle of 90 degrees with the first scanning;
in the graphene-coated copper powder particle reinforced aluminum-based composite material, the graphene accounts for 0.1-1wt% of the total metal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210867212.4A CN115255387B (en) | 2022-07-22 | 2022-07-22 | Preparation method of graphene-coated copper powder particle reinforced aluminum matrix composite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210867212.4A CN115255387B (en) | 2022-07-22 | 2022-07-22 | Preparation method of graphene-coated copper powder particle reinforced aluminum matrix composite |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115255387A CN115255387A (en) | 2022-11-01 |
| CN115255387B true CN115255387B (en) | 2024-01-23 |
Family
ID=83767529
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210867212.4A Active CN115255387B (en) | 2022-07-22 | 2022-07-22 | Preparation method of graphene-coated copper powder particle reinforced aluminum matrix composite |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115255387B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106674931A (en) * | 2015-11-10 | 2017-05-17 | 韩国科学技术研究院 | A composite material, a molded product including the same and a method of preparing a polymer filament |
| CN109108298A (en) * | 2018-09-20 | 2019-01-01 | 宁夏大学 | A kind of preparation method of high tough hierarchical structure metal-base composites |
| CN109759578A (en) * | 2019-01-28 | 2019-05-17 | 华南理工大学 | The 3D printing aluminium-based powder composite and the preparation method and application thereof of two kinds of superfine ceramic particle assembling modifications |
| CN110125389A (en) * | 2019-05-31 | 2019-08-16 | 天津大学 | A kind of preparation method of copper-graphite alkene collaboration reinforced aluminum matrix composites |
| CN111961926A (en) * | 2020-07-08 | 2020-11-20 | 南京思锐迪科技有限公司 | 3D printed nanoparticle reinforced aluminum-based composite powder and preparation method thereof |
-
2022
- 2022-07-22 CN CN202210867212.4A patent/CN115255387B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106674931A (en) * | 2015-11-10 | 2017-05-17 | 韩国科学技术研究院 | A composite material, a molded product including the same and a method of preparing a polymer filament |
| CN109108298A (en) * | 2018-09-20 | 2019-01-01 | 宁夏大学 | A kind of preparation method of high tough hierarchical structure metal-base composites |
| CN109759578A (en) * | 2019-01-28 | 2019-05-17 | 华南理工大学 | The 3D printing aluminium-based powder composite and the preparation method and application thereof of two kinds of superfine ceramic particle assembling modifications |
| CN110125389A (en) * | 2019-05-31 | 2019-08-16 | 天津大学 | A kind of preparation method of copper-graphite alkene collaboration reinforced aluminum matrix composites |
| CN111961926A (en) * | 2020-07-08 | 2020-11-20 | 南京思锐迪科技有限公司 | 3D printed nanoparticle reinforced aluminum-based composite powder and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 镀铝石墨烯/铝基复合粉末制备及其选择性激光熔化成形;谭乐;中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑;第15-22页和第65-66页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115255387A (en) | 2022-11-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113215441B (en) | SLM (Selective laser melting) -molding-based nanoparticle reinforced titanium-based composite material and preparation method thereof | |
| CN100478474C (en) | Particle reinforced aluminium-based composite material and workpiece therefrom and its forming process | |
| WO2022041255A1 (en) | Method for preparing nano-phase reinforced nickel-based high-temperature alloy using micron ceramic particles | |
| CN109321767B (en) | Method for preparing hybrid particle reinforced aluminum matrix composite material by composite reinforcement method | |
| CN110744047A (en) | Preparation method of aluminum-based composite material | |
| CN110846530B (en) | Preparation method of in-situ dual-phase reinforced aluminum-based composite material | |
| CN110744058A (en) | Preparation method for in-situ synthesis of copper-based composite material | |
| CN109554565A (en) | A kind of interface optimization method of carbon nanotube enhanced aluminium-based composite material | |
| CN111349805B (en) | High-temperature structure function integrated Mg (Al) B2And B4C-co-enhanced aluminum-based neutron absorption material and preparation method thereof | |
| CN106799496A (en) | A kind of graphite and alusil alloy composite electron encapsulating material and preparation method thereof | |
| WO2021035774A1 (en) | Preparation method for lithium-containing magnesium/aluminum-based composite material | |
| CN115074566B (en) | Method for improving performance of titanium-based composite material through modified and dispersed oxygen-containing graphene | |
| CN113881873B (en) | High-density trans-scale solid solution ceramic reinforced aluminum matrix composite and preparation method thereof | |
| Ji et al. | Influence of characteristic parameters of SiC reinforcements on mechanical properties of AlSi10Mg matrix composites by powder metallurgy | |
| CN115255387B (en) | Preparation method of graphene-coated copper powder particle reinforced aluminum matrix composite | |
| CN112974842A (en) | Nano multiphase reinforced aluminum matrix composite material and preparation method thereof | |
| CN106048287B (en) | A kind of preparation method of particle enhanced aluminum-based composite material | |
| CN116716508A (en) | TiB (titanium-boron) 2 TiC ceramic reinforced aluminum alloy matrix composite piston and preparation method thereof | |
| CN112609180A (en) | In-situ synthesized nano TiC particle reinforced gradient composite coating and preparation method thereof | |
| CN112077307A (en) | Preparation method of 3D printing graphene-doped high-strength titanium alloy part | |
| CN115430843A (en) | Double-phase particle reinforced additive aluminum alloy and preparation method thereof | |
| CN112941358B (en) | Preparation method of graphene-reinforced Mg-Al-Zn alloy | |
| CN106636708A (en) | Method for preparing nano intermetallic compound particles and application of particles | |
| CN114713818A (en) | Aluminum-based composite powder material for laser additive manufacturing and preparation method thereof | |
| CN103898343A (en) | Method for preparing aluminum-rich intermetallic compound reinforced aluminum-based composite material |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |