CN106676335A - Graphene, aluminum and silicon carbide composite material and preparation method and application thereof - Google Patents
Graphene, aluminum and silicon carbide composite material and preparation method and application thereof Download PDFInfo
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- CN106676335A CN106676335A CN201611199846.8A CN201611199846A CN106676335A CN 106676335 A CN106676335 A CN 106676335A CN 201611199846 A CN201611199846 A CN 201611199846A CN 106676335 A CN106676335 A CN 106676335A
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 184
- 229910021389 graphene Inorganic materials 0.000 title claims abstract description 181
- 229910010271 silicon carbide Inorganic materials 0.000 title claims abstract description 167
- 239000002131 composite material Substances 0.000 title claims abstract description 95
- 238000002360 preparation method Methods 0.000 title claims abstract description 24
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 22
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 22
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 title abstract description 22
- 239000000843 powder Substances 0.000 claims abstract description 44
- 238000000034 method Methods 0.000 claims abstract description 36
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 32
- 238000002156 mixing Methods 0.000 claims abstract description 28
- 239000000463 material Substances 0.000 claims abstract description 20
- KMWBBMXGHHLDKL-UHFFFAOYSA-N [AlH3].[Si] Chemical compound [AlH3].[Si] KMWBBMXGHHLDKL-UHFFFAOYSA-N 0.000 claims description 70
- 239000007788 liquid Substances 0.000 claims description 69
- 239000006185 dispersion Substances 0.000 claims description 63
- CSDREXVUYHZDNP-UHFFFAOYSA-N alumanylidynesilicon Chemical compound [Al].[Si] CSDREXVUYHZDNP-UHFFFAOYSA-N 0.000 claims description 54
- 239000011812 mixed powder Substances 0.000 claims description 51
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 50
- 238000001035 drying Methods 0.000 claims description 23
- 238000003825 pressing Methods 0.000 claims description 17
- 239000007921 spray Substances 0.000 claims description 15
- 239000000203 mixture Substances 0.000 claims description 13
- 239000002245 particle Substances 0.000 claims description 12
- 238000007493 shaping process Methods 0.000 claims description 12
- 230000008569 process Effects 0.000 claims description 9
- 150000001336 alkenes Chemical class 0.000 claims description 8
- 238000012545 processing Methods 0.000 claims description 7
- 229910052710 silicon Inorganic materials 0.000 claims description 7
- 238000003763 carbonization Methods 0.000 claims description 6
- 229910002804 graphite Inorganic materials 0.000 claims description 6
- 239000010439 graphite Substances 0.000 claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 5
- 230000002708 enhancing effect Effects 0.000 claims description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 239000010703 silicon Substances 0.000 claims description 4
- 239000011259 mixed solution Substances 0.000 claims description 3
- 239000000377 silicon dioxide Substances 0.000 claims description 3
- 239000002023 wood Substances 0.000 claims description 3
- 229910052725 zinc Inorganic materials 0.000 claims description 3
- 235000013312 flour Nutrition 0.000 claims description 2
- 230000014759 maintenance of location Effects 0.000 claims description 2
- 230000008901 benefit Effects 0.000 abstract description 10
- 239000000470 constituent Substances 0.000 abstract 1
- 238000004806 packaging method and process Methods 0.000 abstract 1
- 238000009849 vacuum degassing Methods 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 35
- 235000013399 edible fruits Nutrition 0.000 description 13
- 238000003860 storage Methods 0.000 description 13
- 229960000935 dehydrated alcohol Drugs 0.000 description 10
- 238000010792 warming Methods 0.000 description 9
- 229910052799 carbon Inorganic materials 0.000 description 8
- 239000008187 granular material Substances 0.000 description 7
- 238000005086 pumping Methods 0.000 description 7
- 238000002604 ultrasonography Methods 0.000 description 7
- 206010013786 Dry skin Diseases 0.000 description 6
- 229910003978 SiClx Inorganic materials 0.000 description 6
- 239000000919 ceramic Substances 0.000 description 6
- 238000009413 insulation Methods 0.000 description 6
- 230000002787 reinforcement Effects 0.000 description 6
- 229910000679 solder Inorganic materials 0.000 description 6
- 239000004411 aluminium Substances 0.000 description 5
- 230000007547 defect Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 239000004575 stone Substances 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000000498 ball milling Methods 0.000 description 4
- 235000015895 biscuits Nutrition 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000005245 sintering Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000007872 degassing Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 238000005728 strengthening Methods 0.000 description 3
- RQMIWLMVTCKXAQ-UHFFFAOYSA-N [AlH3].[C] Chemical compound [AlH3].[C] RQMIWLMVTCKXAQ-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 238000010306 acid treatment Methods 0.000 description 2
- 230000004913 activation Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000005538 encapsulation Methods 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000005204 segregation Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 238000010835 comparative analysis Methods 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- RGPUVZXXZFNFBF-UHFFFAOYSA-K diphosphonooxyalumanyl dihydrogen phosphate Chemical compound [Al+3].OP(O)([O-])=O.OP(O)([O-])=O.OP(O)([O-])=O RGPUVZXXZFNFBF-UHFFFAOYSA-K 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004100 electronic packaging Methods 0.000 description 1
- 229960004756 ethanol Drugs 0.000 description 1
- IDGUHHHQCWSQLU-UHFFFAOYSA-N ethanol;hydrate Chemical compound O.CCO IDGUHHHQCWSQLU-UHFFFAOYSA-N 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- -1 graphite Alkene Chemical class 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 238000001027 hydrothermal synthesis Methods 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000002905 metal composite material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 229910052752 metalloid Inorganic materials 0.000 description 1
- 150000002738 metalloids Chemical class 0.000 description 1
- 239000004530 micro-emulsion Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000002086 nanomaterial Substances 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000009715 pressure infiltration Methods 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
- 238000001132 ultrasonic dispersion Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- 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
-
- 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
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/12—Both compacting and sintering
- B22F3/14—Both compacting and sintering simultaneously
- B22F3/15—Hot isostatic pressing
-
- 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
- C22C1/05—Mixtures of metal powder with non-metallic powder
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
- C22C32/0047—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with carbides, nitrides, borides or silicides as the main non-metallic constituents
-
- 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
- B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
- B22F2998/10—Processes characterised by the sequence of their steps
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
- Carbon And Carbon Compounds (AREA)
- Powder Metallurgy (AREA)
Abstract
The invention relates to a graphene, aluminum and silicon carbide composite material and a preparation method thereof. The composite material is prepared from of constituents of 10-40 vol% of silicon carbide, 0.5-2 wt% of graphene, and the balance aluminum alloy. The composite material is prepared through a powder metallurgic method and can be obtained through proportioning, powder mixing, packaging, vacuum degassing and hot isostatic forming. The composite material has the advantages of low density, low weight, high hardness, high tensile strength and the like, the strength, fatigue resistance and toughness of the material are remarkably improved through addition of a proper amount of graphene, and thus the composite material has broader application prospects in the field of structural pieces.
Description
Technical field
The present invention relates to a kind of Graphene aluminum silicon carbide composite material and preparation method thereof and its application.
Background technology
Aluminum is the second largest metalloid for being only second to iron and steel, with light, intensity it is good, ductility is good, electric conductivity is strong, good
The advantages of corrosion stability, it is widely used in building, packs, electronics, the industry such as transport, aviation, national defence and automobile and other industries is to aluminum
Demand is increasing.
Aluminium silicon carbide is a kind of metal-base composites, and has merged the different advantages of silicon carbide ceramics and metallic aluminium, tool
There are little, lightweight density, high rigidity and high-tensile.But some have the structural member of particular/special requirement or for special
The structural member of working environment has requirements at the higher level to the performance of aluminium alloy and aluminum silicon carbide composite material.First, to have more excellent
Different mechanical property.Lightweight, high-strength, high specific strength, high elastic modelling quantity are the continuous targets pursued；Secondly, good is resistance to
Fatigue behaviour can also make structural member more competitive in some applications；Again, structural member should also have designing for performance
Property, need to consider the composite that different structural requirements design different performance.
Graphene be it is a kind of with high conductivity, high thermal conductivity, high-moduluss, high intensity two dimensional surface nano material, its
Excellent mechanical property and physical property makes it have great application prospect.Graphene is added into Al/SiC composites
In improving the report of material property.Graphene is added in Al/SiC composites, intensity, the plasticity of material is significantly improved
And toughness, improve the subsequent mechanical processing of material, make material that there is broader practice prospect in the application of structural member.
The A of CN 105924178 disclose a kind of method that pressure permeation method prepares aluminum silicon carbide composite material, by powder
Fill into mould, in the forming under the pressure of 10Mpa, form nearly molding biscuit.To sinter after the encapsulation of mould jacket with biscuit,
Biscuit forms prefabricated component.The mould jacket encapsulation leaching aluminum of prefabricated component is will be equipped with, aluminum silicon carbide composite material is obtained.The system of the method
Without paraffin microemulsion in standby raw material, and the amount of aluminium dihydrogen phosphate is reduced, the space of biscuit is high, and the aluminum body of composite is obtained
Fraction is big, improves thermal conductivity, and simplifies process route, saves cost, is adapted to large-scale production.But the method is present
There is anisotropy, and then affect its high-end utilization performance in silicon-carbide particle aggregation, enhancing distributed mutually inequality, material.
The A of CN 105801154 disclose a kind of Graphene strengthens aluminum silicon carbide composite material and preparation method thereof, and this is combined
Material wraps up one layer of SiO using hydro-thermal method with graphite oxide as carbon source on redox graphene surface2Granule so that graphite
Alkene forms good boundary layer with SiC, and is uniformly dispersed；Jing high temperature sinterings, in Graphene and SiO2Interface is gone back by carbon heat
Original reaction, growth in situ silicon carbide whisker and granule, improve boundary strength and oxidation resistance, produce interface enhancing effect, increase
Plus crack growth resistance, further improve ceramic fracture toughness, to overcome graphene/carbon SiClx composite technology of preparing in stone
The defect such as black alkene bad dispersibility and high-temperature oxidation resistance difference, by growth in situ, crackle self-healing and strengthening and toughening mechanism of stone is applied to
In the technology of preparing of black alkene/carbofrax material, and then obtain the excellent Graphene toughness reinforcing carbonization of mechanical performance, interfacial combined function
Silicon ceramics.But the method needs Jing high temperature sinterings and carbothermic reduction reaction, there is the defect that course of reaction is difficult to control.
CN104264000A discloses a kind of powder metallurgic method and prepares Graphene enhancing aluminium silicon carbide Electronic Packaging composite wood
The method of material, comprises the steps：1) reinforcement granule is soaked with strong acid solution, then deionized water is cleaned to neutrality, is gone
Except surface impurity, drying, the reinforcement granule of activation processing is obtained；2) the reinforcement granule of activation processing is added to into Graphene
In dispersion liquid, by mechanical agitation or ultrasonic disperse, in its Surface coating graphene nanometer sheet, the modified enhancing of Graphene is obtained
Body granule；3) the reinforcement granule that Graphene is modified is mixed with aluminum substrate powder, by pressed compact and sintering, prepared Graphene changes
The high thermal conductivity aluminum matrix composite of property.Composite material surface is rich in gloss obtained in the method, with isotropic, gas hole defect
Less, strengthen phase volume fraction to be easy to change, be easy to the advantages of regulating and controlling the performance of composite.But strong acid need to be used, there is safety hidden
Suffer from and environmental issue.
CN104848748A discloses a kind of method that employing pressure permeation method prepares Graphene aluminum silicon carbide composite material,
The method mixes Graphene with ethanol solution, and homodisperse Graphene alcohol dispersion liquid is obtained, then should by SiC powder addition
In mixed solution, mixture is pressed into skeleton by ball milling, mix homogeneously, drying, and high temperature aluminium liquid is added in Pressure Infiltration mode
In skeleton, Graphene aluminum silicon carbide composite material is obtained.The method has shaping simple, excellent without the need for follow-up complicated machinery processing etc.
Point, but there are problems that strengthening distributed mutually uneven and exist, so cause material property exist anisotropy,
Surface is larger, uncontrollable carborundum volume addition and other strengthen phase (such as Graphene) content defects.Also, the method
Graphene/carbon SiClx reinforced aluminum matrix composites are prepared by preparing the method for SiC ceramic prefabricated component pressure impregnation, need to be by aluminum
Liquid is heated to 700~750 DEG C, there is control difficulty and safety issue；And using ball milling method (about 10~20 hours) by stone
Black alkene alcohol dispersion liquid is added in aluminum silicon carbide composite material, there is not uniform etc. enough defect of mixing.
The content of the invention
It is an object of the invention to provide a kind of Graphene aluminum silicon carbide composite material, it is characterised in that the composite wood
Expect by the material composition of following proportionings：The carborundum of 10~40vol%, the Graphene of 0.5~5wt%, balance of aluminium alloy.
In the preferred technical solution of the present invention, the content of the carborundum is 15-35vol%, preferably 20-30vol%,
More preferably 21-25vol%.
In the preferred technical solution of the present invention, the content of SiC is not less than 97% in the carborundum, and preferred content is not less than
98%, more desirably not less than 99%.
In the preferred technical solution of the present invention, the carborundum is consisted of, the content of SiC for 99.21%, C content
For 0.11%, Fe2O3Content be 0.13%.
In the preferred technical solution of the present invention, the carborundum is powdery, and it is 3~30 μm that particle diameter is worth preferably wherein, more excellent
Elect 8-25 μm, also preferably 10-20 μm as.
In the preferred technical solution of the present invention, the content of the Graphene is 0.5-4wt%, preferably 0.5-2wt%, is gone back
Preferably 1-1.5wt%.
In the preferred technical solution of the present invention, the Graphene is powdery, and it is 2~30 μm that particle diameter is worth preferably wherein, more excellent
Elect 5-20 μm, also preferably 8-12 μm as.
In the preferred technical solution of the present invention, the purity of the Graphene is not less than 90wt%, preferably not less than 95wt%,
More desirably not less than 98wt%.
In the preferred technical solution of the present invention, the aluminium alloy is powdery, and it is 5~90 μm that particle diameter is worth preferably wherein, more excellent
Elect 10-80 μm, also preferably 20-70 μm, another preferably 30-60 μm as.
In the preferred technical solution of the present invention, the composition (mass fraction) of the aluminium alloy is Cu 3.2~4.4%, Mg
1.0~1.6%, Zn≤0.1%, Fe≤0.05%, Si≤0.25%, O≤0.6%, single content≤0.05% of remaining element,
Remaining element adds up to total content≤0.15%.
Another object of the present invention is to the preparation method of Graphene aluminum silicon carbide composite material is provided, the composite
By the material composition of following proportionings：The carborundum of 10~40vol%, the Graphene of 0.5~5wt%, balance of aluminium alloy is described
Composite adopts powder metallurgic method, Jing dispensings, mixed powder, dress jacket, vacuum outgass, high temperature insostatic pressing (HIP) shaping to process and be obtained.
In the preferred technical solution of the present invention, the content of the carborundum is 15-35vol%, preferably 20-30vol%,
More preferably 20-25vol%.
In the preferred technical solution of the present invention, the content of SiC is not less than 97% in the carborundum, and preferred content is not less than
98%, more desirably not less than 99%.
In the preferred technical solution of the present invention, the carborundum is consisted of, the content of SiC for 99.21%, C content
For 0.11%, Fe2O3Content be 0.13%.
In the preferred technical solution of the present invention, the carborundum is powdery, and it is 3~40 μm that particle diameter is worth preferably wherein, more excellent
Elect 8-30 μm, also preferably 15-20 μm as.
In the preferred technical solution of the present invention, the content of the Graphene is 0.5-4wt%, preferably 0.5-2wt%, is gone back
Preferably 1-1.5wt%.
In the preferred technical solution of the present invention, the Graphene is powdery, and it is 2~30 μm that particle diameter is worth preferably wherein, more excellent
Elect 5-20 μm, also preferably 10-15 μm as.
In the preferred technical solution of the present invention, the purity of the Graphene is not less than 90wt%, preferably not less than 95wt%,
More desirably not less than 98wt%.
In the preferred technical solution of the present invention, the aluminium alloy is powdery, and it is 5~90 μm that particle diameter is worth preferably wherein, more excellent
Elect 15-80 μm, also preferably 25-70 μm, also preferably 35-60 μm as.
In the preferred technical solution of the present invention, the aluminium alloy consists of Cu 3.2~4.4%, Mg 1.0~1.6%,
Zn≤0.1%, Fe≤0.05%, Si≤0.25%, O≤0.6%, single content≤0.05% of remaining element, remaining element is closed
Meter total content≤0.15%.
In the preferred technical solution of the present invention, the dispensing is processed and weighs or measure the desired amount of carborundum, stone respectively
Black alkene, aluminium alloy, dehydrated alcohol, obtain final product.
In the preferred technical solution of the present invention, the mixed powder is processed and comprised the steps：1) by Al alloy powder and carborundum
Powder high-speed uniform mixes, and aluminium silicon carbide mixed powder is obtained；2) Graphene alcohol dispersion liquid is configured；3) by Graphene alcohol dispersion liquid
Atomized spray adds the aluminium silicon carbide mixed powder of rotation at a high speed so as to uniform mixing, and Graphene is obtained strengthens aluminium silicon carbide mixing
Dispersion liquid；4) Graphene is strengthened after aluminium silicon carbide mixed dispersion liquid cold drying process, then the mixing of Jing high-speed uniforms, stone is obtained
Black alkene strengthens aluminium silicon carbide powder body.
It is 300- by the revolution that Al alloy powder and carborundum powder high-speed uniform mix in the preferred technical solution of the present invention
1200rpm, more preferably 400-1000rpm, also preferably 500-900rpm.
In the preferred technical solution of the present invention, using ultrasonic disperse Graphene alcohol dispersion liquid so as to mix homogeneously, preferably
The concentration of Graphene alcohol dispersion liquid is 0.1-5g/ml, also preferably more preferably 0.5-4g/ml, 1-3g/ml.
In the preferred technical solution of the present invention, the supersonic frequency in ultrasonic disperse be 30-200Hz, preferably 50-150Hz,
Preferably 80-100Hz.
In the preferred technical solution of the present invention, the ultrasonic time in ultrasonic disperse is 10-120min, preferably 20-
100min, more preferably 30-80min.
In the preferred technical solution of the present invention, Graphene alcohol dispersion liquid atomized spray is added into the aluminum carbonization of rotation at a high speed
In silicon mixed powder so as to which uniform mixing, preferred mixed at high speed revolution is 300-1200rpm, more preferably 400-1000rpm, is gone back
Preferably 500-900rpm.
In the preferred technical solution of the present invention, the cold drying treatment temperature is 30-60 DEG C, preferably 40-50 DEG C.
In the preferred technical solution of the present invention, Graphene is strengthened after the cold drying of aluminium silicon carbide mixed solution is processed and is obtained
Powder body mixing revolution be 300-1200rpm, also preferably more preferably 400-1000rpm, 500-900rpm.
In the preferred technical solution of the present invention, obtained Graphene is strengthened into aluminium silicon carbide powder body and loads jacket, carried out true
Empty degassing process, wherein, described Fruit storage comprises the steps：1) 20-40 DEG C, 1-3 hours are evacuated；2) it is warming up to
300-500 DEG C, it is evacuated 1-3 hours；3) 400-600 DEG C is warming up to, pumping, until jacket vacuum reaches 1.0-5.0 × 10-3Pa
Afterwards, 3-5 hours are incubated；4) room temperature is cooled to, jacket is taken out.
In the preferred technical solution of the present invention, the jacket is aluminium alloy jacket.
In the preferred technical solution of the present invention, will be equipped with Graphene strengthens the jacket welding envelope of aluminium silicon carbide mix homogeneously powder
Mouthful, high temperature insostatic pressing (HIP) shaping process is carried out, wherein, the treatment temperature during the high temperature insostatic pressing (HIP) shaping is processed is 200-700 DEG C, preferably
For 300-580 DEG C, more preferably 400-550 DEG C, also preferably 450-500 DEG C.
In the preferred technical solution of the present invention, the processing pressure during the high temperature insostatic pressing (HIP) shaping is processed is 50-200MPa, excellent
Elect 100-180MPa, also preferably 110-140MPa as.
In the preferred technical solution of the present invention, temperature retention time is 1-5h, preferably 2- during the high temperature insostatic pressing (HIP) shaping is processed
4h。
The present invention prepares Graphene using powder metallurgic method strengthens aluminum-base silicon carbide composite, high-speed uniform mixing carbonization
Silica flour and Al alloy powder, are obtained aluminium silicon carbide mixed powder；Ultrasonic disperse prepares Graphene alcohol dispersion liquid, realizes Graphene in nothing
It is dispersed in water-ethanol, Graphene alcohol dispersion liquid is obtained；Graphene alcohol dispersion liquid atomized spray is added at a high speed again
In the aluminium silicon carbide mixed powder of rotation so that Graphene is dispersed in aluminium silicon carbide mixed powder, the carbonization of Graphene aluminum is obtained
Silicon mixed dispersion liquid；Graphene aluminium silicon carbide mixed dispersion liquid is Jing after cold drying, then Jing mixed at high speed, dress jacket, vacuum take off
After the process of air and heat hydrostatic pressing, Graphene is obtained strengthens aluminum silicon carbide composite material.
It is an object of the invention to provide the Graphene reinforced aluminum matrix composites of the present invention be used for make structural member or its
Application in product.
In the preferred technical solution of the present invention, the structural member is selected from heat resistanceheat resistant deformation structure part, abrasion-proof structure, aviation boat
Any one in its structural member, robot architecture's part, preferably lightweight aerospace structure part.
In order to clearly state protection scope of the present invention, the present invention is defined as follows to following terms.
Graphene alcohol dispersion liquid of the present invention using ultrasonic dispersion prepare, will Graphene ultrasound it is dispersed
Into dehydrated alcohol so as to mix homogeneously, and then Graphene alcohol dispersion liquid, the concentration of preferred Graphene alcohol dispersion liquid is obtained
For 0.1-5g/ml, also preferably more preferably 0.5-4g/ml, 1-3g/ml.
Graphene aluminium silicon carbide mixed dispersion liquid of the present invention is to add Graphene alcohol dispersion liquid atomized spray
At a high speed in the aluminium silicon carbide mixed powder of rotation so that Graphene is dispersed in aluminium silicon carbide mixed powder, and then graphite is obtained
Alkene aluminium silicon carbide mixed dispersion liquid.
The present invention the powder metallurgic method refer to produce metal dust or with metal dust (or metal dust with it is nonmetallic
The mixture of powder) as raw material, through shaping and sintering, and then prepare metal material, composite or its all kinds system
The method of product.
Pressure permeation method of the present invention refers to and produce in advance silicon carbide ceramics prefabricated component, then by pressure by high temperature aluminium liquid
Infiltrate into silicon carbide ceramics prefabricated component, and then the method that aluminum silicon carbide composite material is obtained.
Median particle diameter of the present invention measures powder granularity D with laser particle analyzer50Value is represented in powder in weighing
The powder amount of value particle diameter accounts for the 50% of powder total amount.
Rpm (round per minute) of the present invention, represents revolutions per minute.
Thermal conductivity of the present invention is referred to determines unit temperature gradient (temperature reduces 1K in 1m length) in the unit interval
The heat that interior Jing units thermal conductive surface is transmitted.
Thermal coefficient of expansion of the present invention is mainly weighed with average coefficient of linear expansion.Linear expansion coefficient refers to that unit is long
The material of degree often raises average elongation amount once in a certain temperature range (25~150 DEG C) temperature.
Isotropism of the present invention refers to similar nature of the material in all directions.
Graphene of the present invention strengthens the thermal conductivity and thermal coefficient of expansion detection reference standard GB/ of aluminum-base silicon carbide composite
The regulation of T 22588-2008, using laser shine thermal conductivity coefficient measurement instrument detection.
Graphene of the present invention strengthens tensile strength, yield strength, percentage elongation of aluminum-base silicon carbide composite etc. with reference to GB/
T 228-2002 standards regulation is detected.
Unless otherwise stated, the present invention relates to during percentage ratio between liquid and liquid, described percentage ratio is volume/body
Product percentage ratio；The present invention relates to during percentage ratio between liquid and solid, the percentage ratio is volume/weight percentage ratio；This
It is bright be related between solid and liquid percentage ratio when, the percentage ratio be weight/volume percent；Remaining is w/w hundred
Divide ratio.
Compared with prior art, the present invention has following beneficial effects：
1st, the present invention prepares Graphene using powder metallurgic method strengthens aluminum-base silicon carbide composite, high-speed uniform mixing carbon
SiClx powder and Al alloy powder, are obtained aluminium silicon carbide mixed powder；Ultrasonic disperse prepares Graphene alcohol dispersion liquid, realizes that Graphene exists
It is dispersed in dehydrated alcohol, Graphene alcohol dispersion liquid is obtained；Graphene alcohol dispersion liquid atomized spray is added again high
In the aluminium silicon carbide mixed powder of speed rotation so that Graphene is dispersed in aluminium silicon carbide mixed powder, Graphene aluminum carbon is obtained
SiClx mixed dispersion liquid；Graphene aluminium silicon carbide mixed dispersion liquid is Jing after cold drying, then Jing mixed at high speed, dress jacket, vacuum
After degassing, high temperature insostatic pressing (HIP) shaping are processed, Graphene is obtained strengthens aluminum silicon carbide composite material.The method passes through mixed at high speed powder
And high temperature insostatic pressing (HIP) means direct forming, not only solving strengthens the problem of phase segregation, and the reunion of effectively solving Graphene so that
Graphene obtains more uniformly being distributed in the mixture, and simplifies production technology, has the advantages that easy to operate.
2nd, the present invention based on metallic aluminium, carborundum is particulates reinforcements, improve the strength of materials on the basis of and not
Its metallic character (such as ductility) is affected, then ultrasonic homodisperse Graphene alcohol dispersion liquid atomized spray is added into rotation at a high speed
In the aluminium silicon carbide powder for turning, obtained composite has little, lightweight density, high-ductility, high tenacity, high-tensile etc.
Advantage, and with excellent fatigue resistance, and its surface appearance is excellent, the subsequent mechanical for improving material is processed, and easily
Control strengthens the volume fraction change of phase, and then adjusts the performance of composite, as preparing high-end structural member.
It is 3rd, of the invention on the premise of the effective application performance of composite (such as thermal conductivity and thermal coefficient of expansion) is not reduced,
Adding the Graphene of certain content (0.5~5%) strengthens mutually to prepare aluminum silicon carbide composite material, improves the anti-of composite
Tensile strength (increase rate 15%~30%), yield strength (increase rate 10%~30%), fatigue resistance (increase rate 8%~
12%) and coefficient of friction (8-15%) etc., and there is high-strength light, isotropism, as preparing high-end structural member.
4th, need not to carry out strong acid treatment, ball milling dispersion mixed for the preparation method of Graphene aluminum silicon carbide composite material of the present invention
Conjunction, the infiltration of high temperature aluminum hydraulic coupling etc. are processed, obtained Graphene aluminum silicon carbide composite material excellent performance, and with the operation cycle
The short, three wastes are few, environmental protection, simple and safe operation the advantages of, beneficial to industrial scale production.
Specific embodiment
The present invention is illustrated below with reference to embodiment, embodiments of the invention are merely to illustrate the technical side of the present invention
Case, and the essence of the non-limiting present invention.
Embodiment 1The preparation of Graphene aluminum silicon carbide composite material
Graphene aluminum silicon carbide composite material is consisted of：
The preparation method of Graphene aluminum silicon carbide composite material, comprises the steps：
1st, by 1000g Graphenes ultrasound (frequency 50Hz, ultrasonic 40min) dispersed dehydrated alcohol to 1000ml, make
Obtain Graphene alcohol dispersion liquid；
2nd, 11.5kg Al alloy powders and 3.5kg carborundums are weighed, in being sequentially placed into batch mixer, 500rpm mixing
30min；850rpm is remixed after 1h, and aluminium silicon carbide mixed powder is obtained, and is divided into five equal portions；
3rd, 0ml, 15ml, 30ml, 45ml, 60ml Graphene alcohol dispersion liquid is measured respectively, under the conditions of 900rpm, respectively
Graphene alcohol dispersion liquid atomized spray is added in the aluminium silicon carbide mixed powder of five equal portions, 900rpm is remixed after 2h, be obtained
Graphene aluminium silicon carbide mixed dispersion liquid；
4th, after collecting the Graphene aluminium silicon carbide mixed dispersion liquid of five equal portions respectively, in 50 DEG C of dryings, Graphene aluminum is obtained
Carborundum combination drying powder；Again obtained Graphene aluminium silicon carbide combination drying powder is placed in into 900rpm mixing 1h, graphite is obtained
Alkene aluminium silicon carbide mixed powder；
5th, respectively by obtained five equal portions Graphene aluminium silicon carbide mixed powder loading aluminium alloy jacket (jacket size, Φ 100
× 200mm), Fruit storage is carried out, wherein, described Fruit storage comprises the steps：1) 25 DEG C, pumping 2 is little
When；2) 350 DEG C are warming up to, are evacuated 2.5 hours；3) 500 DEG C are warming up to, pumping, until jacket vacuum reaches 3.0 × 10-3Pa
Afterwards, 5 hours are incubated；4) room temperature is cooled to, jacket is taken out；
6th, by jacket solder up obtained in step 5,500 DEG C, 150MPa, insulation 2h under the conditions of carry out high temperature insostatic pressing (HIP) into
Shape process, machined prepared round billet ingot is obtained Graphene aluminum silicon carbide composite material.
Embodiment 2The preparation of Graphene aluminum silicon carbide composite material
Graphene aluminum silicon carbide composite material is consisted of：
The preparation method of Graphene aluminum silicon carbide composite material, comprises the steps：
1st, by 1000g Graphenes ultrasound (frequency 60Hz, ultrasonic 45min) dispersed dehydrated alcohol to 1000ml, make
Obtain Graphene alcohol dispersion liquid；
2nd, 2.5kg Al alloy powders and 0.5kg carborundums are weighed, in being sequentially placed into batch mixer, 600rpm mixing
30min；950rpm is remixed after 1h, and aluminium silicon carbide mixed powder is obtained；
3rd, under the conditions of 950rpm, 30ml Graphene alcohol dispersion liquids atomized spray is added in aluminium silicon carbide mixed powder,
950rpm is remixed after 2h, and Graphene aluminium silicon carbide mixed dispersion liquid is obtained；
4th, collect after Graphene aluminium silicon carbide mixed dispersion liquid, in 55 DEG C of dryings, then obtained drying mixed powder is placed in
950rpm mixing 1h, are obtained Graphene aluminium silicon carbide mixed powder；
5th, obtained Graphene aluminium silicon carbide mixed powder is loaded into aluminium alloy jacket (jacket size, 100 × 200mm of Φ),
Fruit storage is carried out, wherein, described Fruit storage comprises the steps：1) 30 DEG C, it is evacuated 2 hours；2) heat up
To 360 DEG C, it is evacuated 2.5 hours；3) 550 DEG C are warming up to, pumping, until jacket vacuum is reached after 2.5 × 10-3Pa, is incubated
4.5 hour；4) room temperature is cooled to, jacket is taken out；
6th, by jacket solder up obtained in step 5, under the conditions of 460 DEG C, 120MPa, insulation 2.5h high temperature insostatic pressing (HIP) is carried out
Shaping is processed, machined prepared round billet ingot, and Graphene aluminum silicon carbide composite material is obtained.
Embodiment 3The preparation of Graphene aluminum silicon carbide composite material
Graphene aluminum silicon carbide composite material is consisted of：
The preparation method of Graphene aluminum silicon carbide composite material, comprises the steps：
1st, it is 1000g Graphenes ultrasound (supersonic frequency 70Hz, ultrasonic 30min) is dispersed to 1000ml dehydrated alcohol
In, Graphene alcohol dispersion liquid is obtained；
2nd, 2.3kg Al alloy powders and 0.7kg carborundums are weighed, in being sequentially placed into batch mixer, 650rpm mixing
30min；After 1000rpm mixing 1h, aluminium silicon carbide mixed powder is obtained；
3rd, under the conditions of 1000rpm, 30ml Graphene alcohol dispersion liquids atomized spray is added in aluminium silicon carbide mixed powder,
1000rpm is remixed after 2h, and Graphene aluminium silicon carbide mixed dispersion liquid is obtained；
4th, collect after Graphene aluminium silicon carbide mixed dispersion liquid, in 45 DEG C of dryings, then obtained drying mixed powder is placed in
1000rpm mixing 1h, Graphene is obtained strengthens aluminium silicon carbide mixed powder；
5th, obtained Graphene aluminium silicon carbide mixed powder is loaded into aluminium alloy jacket (jacket size, 100 × 200mm of Φ),
Fruit storage is carried out, wherein, described Fruit storage comprises the steps：1) 21 DEG C, it is evacuated 2 hours；2) heat up
To 380 DEG C, it is evacuated 2 hours；3) 600 DEG C are warming up to, pumping, until jacket vacuum is reached after 4.0 × 10-3Pa, is incubated 4.5
Hour；4) room temperature is cooled to, jacket is taken out；
6th, by jacket solder up obtained in step 5,550 DEG C, 130MPa, insulation 3h under the conditions of carry out high temperature insostatic pressing (HIP) into
Shape process, machined prepared round billet ingot is obtained Graphene aluminum silicon carbide composite material.
Embodiment 4The preparation of Graphene aluminum silicon carbide composite material
Graphene aluminum silicon carbide composite material is consisted of：
The preparation method of Graphene aluminum silicon carbide composite material, comprises the steps：
1st, it is 1000g Graphenes ultrasound (supersonic frequency 80Hz, ultrasonic 40min) is dispersed to 1000ml dehydrated alcohol
In, Graphene alcohol dispersion liquid is obtained；
2nd, 2.15kg Al alloy powders and 0.85kg carborundums are weighed, in being sequentially placed into batch mixer, 650rpm mixing
30min；After 1100rpm mixing 1h, aluminium silicon carbide mixed powder is obtained；
3rd, under the conditions of 1100rpm, 30ml Graphene alcohol dispersion liquids atomized spray is added in aluminium silicon carbide mixed powder,
1100rpm is remixed after 2h, and Graphene aluminium silicon carbide mixed dispersion liquid is obtained；
4th, collect after Graphene aluminium silicon carbide mixed dispersion liquid, in 50 DEG C of dryings, then obtained drying mixed powder is placed in
1000rpm mixing 1h, are obtained Graphene aluminium silicon carbide mixed powder；
5th, obtained Graphene aluminium silicon carbide mixed powder is loaded into aluminium alloy jacket (jacket size, 100 × 200mm of Φ),
Fruit storage is carried out, wherein, described Fruit storage comprises the steps：1) 28 DEG C, it is evacuated 2 hours；2) heat up
To 370 DEG C, it is evacuated 2 hours；3) 510 DEG C are warming up to, pumping, until jacket vacuum is reached after 2.8 × 10-3Pa, is incubated 4 little
When；4) room temperature is cooled to, jacket is taken out；
6th, by jacket solder up obtained in step 5,520 DEG C, 140MPa, insulation 2h under the conditions of carry out high temperature insostatic pressing (HIP) into
Shape process, machined prepared round billet ingot is obtained Graphene aluminum silicon carbide composite material.
Embodiment 5The preparation of Graphene aluminum silicon carbide composite material
Graphene aluminum silicon carbide composite material is consisted of：
The preparation method of Graphene aluminum silicon carbide composite material, comprises the steps：
1st, it is 1000g Graphenes ultrasound (supersonic frequency 90Hz, ultrasonic 40min) is dispersed to 1000ml dehydrated alcohol
In, Graphene alcohol dispersion liquid is obtained；
2nd, 2.0kg Al alloy powders and 1.0kg carborundums are weighed, in being sequentially placed into batch mixer, 650rpm mixing
30min；After 950rpm mixing 1h, aluminium silicon carbide mixed powder is obtained；
3rd, under the conditions of 1000rpm, 30ml Graphene alcohol dispersion liquids atomized spray is added in aluminium silicon carbide mixed powder,
900rpm is remixed after 2h, and Graphene aluminium silicon carbide mixed dispersion liquid is obtained；
4th, collect after Graphene aluminium silicon carbide mixed dispersion liquid, in 60 DEG C of dryings, then obtained drying mixed powder is placed in
1000rpm mixing 1h, are obtained Graphene aluminium silicon carbide mixed powder；
5th, obtained Graphene aluminium silicon carbide mixed powder is loaded into aluminium alloy jacket (jacket size, 100 × 200mm of Φ),
Fruit storage is carried out, wherein, described Fruit storage comprises the steps：1) 30 DEG C, it is evacuated 2 hours；2) heat up
To 400 DEG C, it is evacuated 3 hours；3) 510 DEG C are warming up to, pumping, until jacket vacuum is reached after 3.5 × 10-3Pa, is incubated 3.5
Hour；4) room temperature is cooled to, jacket is taken out；
6th, by jacket solder up obtained in step 5,520 DEG C, 110MPa, insulation 2h under the conditions of carry out high temperature insostatic pressing (HIP) into
Shape process, machined prepared round billet ingot is obtained Graphene aluminum silicon carbide composite material.
Embodiment 6Graphene strengthens the preparation of phase aluminum silicon carbide composite material
Graphene strengthens consisting of for phase aluminum silicon carbide composite material：
The preparation method of Graphene aluminum silicon carbide composite material, comprises the steps：
1st, it is 1000g Graphenes ultrasound (supersonic frequency 75Hz, ultrasonic 40min) is dispersed to 1000ml dehydrated alcohol
In, Graphene alcohol dispersion liquid is obtained；
2nd, 2.0kg Al alloy powders and 1.0kg carborundums are weighed, in being sequentially placed into batch mixer, 650rpm mixing
30min；After 1000rpm mixing 1h, aluminium silicon carbide mixed powder is obtained；
3rd, under the conditions of 1000rpm, 30ml Graphene alcohol dispersion liquids atomized spray is added in aluminium silicon carbide mixed powder,
1000rpm is remixed after 2h, and Graphene aluminium silicon carbide mixed dispersion liquid is obtained；
4th, collect after Graphene aluminium silicon carbide mixed dispersion liquid, in 58 DEG C of dryings, then obtained drying mixed powder is placed in
1000rpm mixing 1h, are obtained Graphene aluminium silicon carbide mixed powder；
5th, obtained Graphene aluminium silicon carbide mixed powder is loaded into aluminium alloy jacket (jacket size, 100 × 200mm of Φ),
Fruit storage is carried out, wherein, described Fruit storage comprises the steps：1) 26 DEG C, it is evacuated 3 hours；2) heat up
To 360 DEG C, it is evacuated 3 hours；3) 530 DEG C are warming up to, jacket vacuum are pumped to and are reached after 3.5 × 10-3Pa, be incubated 4 hours；
4) room temperature is cooled to, jacket is taken out；
6th, by jacket solder up obtained in step 5,510 DEG C, 130MPa, insulation 2h under the conditions of carry out high temperature insostatic pressing (HIP) into
Shape process, machined prepared round billet ingot is obtained Graphene aluminum silicon carbide composite material.
Detect according to detection method of the present invention, Graphene aluminum silicon carbide composite material obtained in embodiment 1-6
Performance parameter is shown in Table 1.
Table 1
From table 1, the present invention has following Advantageous Effects relative to prior art：
1st, the present invention prepares Graphene using powder metallurgic method strengthens aluminum-base silicon carbide composite, high-speed uniform mixing carbon
SiClx powder and Al alloy powder, are obtained aluminium silicon carbide mixed powder；Ultrasonic disperse prepares Graphene alcohol dispersion liquid, realizes that Graphene exists
It is dispersed in dehydrated alcohol, Graphene alcohol dispersion liquid is obtained；Graphene alcohol dispersion liquid atomized spray is added again high
In the aluminium silicon carbide mixed powder of speed rotation so that Graphene is dispersed in aluminium silicon carbide mixed powder, Graphene aluminum carbon is obtained
SiClx mixed dispersion liquid；Graphene aluminium silicon carbide mixed dispersion liquid is Jing after cold drying, then Jing mixed at high speed, dress jacket, vacuum
After degassing, high temperature insostatic pressing (HIP) shaping are processed, Graphene is obtained strengthens aluminum silicon carbide composite material.The method is by mixed-powder and heat
Isostatic pressed means direct forming, not only solving strengthens the problem of phase segregation, and the reunion of effectively solving Graphene so that graphite
Alkene obtains more uniformly being distributed in the mixture, and simplifies production technology, has the advantages that easy to operate.
2nd, from embodiment 1, the present invention adds Graphene to significantly improve the performance of composite.When Graphene addition
At 1%, composite property is lifted relatively more excellent.
3rd, comparative analysiss embodiment 2~6 is visible, when the content of Graphene is fixed, with the volume fraction of carborundum
Increase (increasing to 35% from 15%), except coefficient of friction gradually increases therewith, other performance parameter is presented and first increases becoming of subtracting afterwards
Gesture, when the volume fraction of carborundum is 20% peak value is reached.
4th, the present invention based on metallic aluminium, carborundum is particulates reinforcements, improve the strength of materials on the basis of and not
Destroying infection its metallic character (such as ductility), then ultrasonic homodisperse Graphene alcohol dispersion liquid atomized spray is added high
Speed rotation aluminium silicon carbide powder in, obtained composite have little, lightweight high-ductility, high tenacity, density, high rigidity,
The advantages of high-tensile, and with excellent intensity, modulus, wear and corrosion behavior, fatigue resistance, and its surface appearance is excellent
It is good, the subsequent mechanical processing of material is improved, and the volume fraction change for strengthening phase is easily controlled, and then regulation composite
Performance, as preparing high-end structural member.
It is 5th, of the invention on the premise of the effective application performance of composite (such as thermal conductivity and thermal coefficient of expansion) is not reduced,
Adding the Graphene of certain content (0.5~5%) strengthens mutually to prepare aluminum silicon carbide composite material, improves the anti-of composite
Tensile strength (increase rate 15%~30%), yield strength (increase rate 10%~30%), fatigue resistance (increase rate 8%~
12%) and coefficient of friction (8-15%) etc., and there is high-strength light, isotropism, as preparing high-end structural member.
6th, need not to carry out strong acid treatment, ball milling dispersion mixed for the preparation method of Graphene aluminum silicon carbide composite material of the present invention
Conjunction, the infiltration of high temperature aluminum hydraulic coupling etc. are processed, obtained Graphene aluminum silicon carbide composite material excellent performance, and with the operation cycle
The short, three wastes are few, environmental protection, simple and safe operation the advantages of, beneficial to industrial scale production.
It is above the preferred embodiment of the present invention, but the enforcement of the present invention is not limited to examples detailed above.Those skilled in the art read
After the above, any for the modifications and substitutions of the present invention, the claim that can all considered to be in the present invention limits model
In enclosing.
Claims (10)
1. a kind of Graphene aluminum silicon carbide composite material, it is characterised in that the composite by following proportionings material composition：
The carborundum of 10~40vol%, the Graphene of 0.5~5wt%, balance of aluminium alloy.
2. Graphene aluminum silicon carbide composite material according to claim 1, the content of carborundum is in the composite
15-35vol%, preferably 20-30vol%, more preferably 21-25vol%.
3. the Graphene aluminum silicon carbide composite material according to any one of claim 1-2, carborundum in the composite
For powdery, it is 3~30 μm, more preferably 8-25 μm, also preferably 10-20 μm that particle diameter is worth preferably wherein.
4. the Graphene aluminum silicon carbide composite material according to any one of claim 1-3, aluminium alloy in the composite
For powdery, it is 5~90 μm that particle diameter is worth preferably wherein, more preferably 10-80 μm, also preferably 20-70 μm, is separately preferably 30-60 μ
m。
5. the Graphene aluminum silicon carbide composite material according to any one of claim 1 or 2, aluminium alloy in the composite
Composition (mass fraction) be Cu 3.2~4.4%, Mg 1.0~1.6%, Zn≤0.1%, Fe≤0.05%, Si≤
0.25%, O≤0.6%, single content≤0.05% of remaining element, remaining element adds up to total content≤0.15%.
6. the preparation method of the Graphene aluminum silicon carbide composite material described in a kind of any one of claim 1-5, the composite wood
Expect by the material composition of following proportionings：The carborundum of 10~40vol%, the Graphene of 0.5~5wt%, balance of aluminium alloy, institute
Stating composite adopts powder metallurgic method, Jing dispensings, mixed powder, dress jacket, vacuum outgass, high temperature insostatic pressing (HIP) shaping to process and be obtained.
7. preparation method according to claim 6, the mixed powder is processed and comprised the steps：1) by Al alloy powder and carbonization
Silica flour high-speed uniform mixes, and aluminium silicon carbide mixed powder is obtained；2) Graphene alcohol dispersion liquid is configured；3) Graphene ethanol is disperseed
Liquid atomized spray adds the aluminium silicon carbide mixed powder of high speed rotation so as to uniform mixing, Graphene enhancing aluminium silicon carbide is obtained and mixes
Close dispersion liquid；4) Graphene is strengthened after aluminium silicon carbide mixed dispersion liquid cold drying process, then Jing rotates at a high speed uniform mixing,
Prepared Graphene strengthens aluminium silicon carbide powder body.
8. the preparation method according to any one of claim 6 or 7, during the mixed powder is processed, by Graphene aluminum carbonization is strengthened
The silicon mixed solution cold drying revolution that obtained powder body mixes after processing is 300-1200rpm, more preferably 400-
1000rpm, also preferably 500-900rpm.
9. the preparation method according to any one of claim 6-8, temperature retention time is 1- during the high temperature insostatic pressing (HIP) shaping is processed
5h, preferably 2-4h.
10. Graphene aluminum silicon carbide composite material described in claim 1-5 or graphite obtained in any one of claim 6-9
Alkene aluminum silicon carbide composite material is used to make structural member or the application in its product.
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