CN111101112B - Graphene-aluminum composite material and preparation method thereof - Google Patents

Graphene-aluminum composite material and preparation method thereof Download PDF

Info

Publication number
CN111101112B
CN111101112B CN201911415984.9A CN201911415984A CN111101112B CN 111101112 B CN111101112 B CN 111101112B CN 201911415984 A CN201911415984 A CN 201911415984A CN 111101112 B CN111101112 B CN 111101112B
Authority
CN
China
Prior art keywords
graphene
aluminum
nickel
foamed aluminum
composite material
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
Application number
CN201911415984.9A
Other languages
Chinese (zh)
Other versions
CN111101112A (en
Inventor
边明勇
卢科伟
李辰鹏
王成军
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xinjiang Xijin Graphene Technology Co ltd
Original Assignee
Xinjiang Xijin Graphene Technology Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Xinjiang Xijin Graphene Technology Co ltd filed Critical Xinjiang Xijin Graphene Technology Co ltd
Priority to CN201911415984.9A priority Critical patent/CN111101112B/en
Publication of CN111101112A publication Critical patent/CN111101112A/en
Application granted granted Critical
Publication of CN111101112B publication Critical patent/CN111101112B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
    • C23C16/22—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the deposition of inorganic material, other than metallic material
    • C23C16/26—Deposition of carbon only
    • 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
    • C22C1/08—Alloys with open or closed pores
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Carbon And Carbon Compounds (AREA)

Abstract

The invention relates to a graphene-aluminum composite material and a preparation method thereof. The preparation method comprises the following steps: filling nickel salt into pores of the foamed aluminum, heating for the first time, and reducing the nickel salt into a nickel simple substance to obtain the foamed aluminum filled with the nickel simple substance; mixing the foamed aluminum filled with the nickel simple substance and the carbon-containing gas, and heating for the second time to obtain foamed aluminum containing graphene sheets; and pressurizing to densify the foamed aluminum containing the graphene sheet layers. The preparation method can reduce the oxygen content in the graphene aluminum-based composite material, improve the tensile strength of the graphene aluminum-based composite material, and realize uniform dispersion of graphene.

Description

Graphene-aluminum composite material and preparation method thereof
Technical Field
The invention relates to the technical field of composite materials, in particular to a graphene-aluminum composite material and a preparation method thereof.
Background
Graphene (graphene) is sp2The mixed rail domain forms a hexagonal honeycomb-arranged two-dimensional crystal, the thickness of the two-dimensional crystal is 0.335nm, the diameter of only one carbon atom is the thinnest and the hardest material in the world at present, and particularly the two-dimensional crystal has the outstanding electric conduction and heat conduction properties at the same time, wherein the mechanical strength can be hundreds of times higher than that of steel, and the specific gravity is only about one fourth of that of the steel. Therefore, graphene is one of the best choices for improving the characteristics of the composite material.
The aluminum-based composite material has the advantages of high specific strength, high specific rigidity and the like, and is easy to prepare and process, so the development of the aluminum-based composite material is particularly prominent in the whole field of metal-based composite materials. However, graphene as a nonmetal is difficult to achieve uniform dispersion in an aluminum matrix, which seriously affects the performance improvement of graphene as a reinforcing phase and is not beneficial to industrialization.
Patent CN109128148A discloses a preparation method of graphene aluminum-based composite material, which is to mix and stir a graphene oxide aqueous solution and aluminum powder/aluminum alloy powder, and then to obtain the graphene aluminum composite material through rapid spray drying. Although the method can control the oxidation degree of the metal powder by controlling the mixing temperature, the drying speed and the drying temperature, the problem of high oxygen content still exists in the composite material due to the large specific surface area of the aluminum powder/aluminum alloy powder, and the aluminum oxide is brittle and is not beneficial to improving the tensile strength of the composite material, and meanwhile, the method has high manufacturing cost.
Disclosure of Invention
Based on the above, the invention provides the preparation method of the graphene-aluminum composite material, which can reduce the oxygen content in the graphene-aluminum composite material, improve the tensile strength of the graphene-aluminum composite material, and realize uniform dispersion of graphene.
The specific technical scheme is as follows:
a preparation method of a graphene-aluminum composite material comprises the following steps:
filling nickel salt into pores of the foamed aluminum, heating for the first time, and reducing the nickel salt into a nickel simple substance to obtain the foamed aluminum filled with the nickel simple substance;
mixing the foamed aluminum filled with the nickel simple substance and the carbon-containing gas, and heating for the second time to obtain foamed aluminum containing graphene sheets;
and pressurizing to densify the foamed aluminum containing the graphene sheet layers.
The invention also provides the graphene aluminum composite material prepared by the preparation method.
Compared with the prior art, the invention has the following beneficial effects:
the foamed aluminum replaces aluminum powder/aluminum alloy and is used as an aluminum matrix material, so that part of oxygen content can be reduced, meanwhile, the foamed aluminum has a considerable number of pores, nickel salt is filled in the pores, under the condition, the foamed aluminum filled with the nickel salt is heated, the nickel salt can be reduced into a nickel simple substance at a high temperature, the filling of the nickel simple substance in the pores of the foamed aluminum is completed, the nickel simple substance is formed by adopting the redox mode, and the oxygen content can be further reduced. In addition, after a nickel elementary substance is formed in pores of the foamed aluminum, carbon-containing gas is mixed, a gaseous carbon source is introduced, the temperature is raised, the nickel elementary substance exerts a catalytic effect, the gaseous carbon source generates a graphene sheet layer on the foamed aluminum under the action of nickel catalysis, and the foamed aluminum is pressurized, hot-pressed and sintered to be densified, so that the graphene aluminum composite material is prepared. The method can well disperse the graphene in the foamed aluminum, can effectively reduce the oxygen content in the graphene-aluminum composite material, and the prepared graphene-aluminum composite material has the advantages of obviously improved tensile strength and good conductivity.
Detailed Description
The present invention will be described in further detail with reference to specific examples. The present invention may be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
A preparation method of a graphene-aluminum composite material comprises the following steps:
filling nickel salt into pores of the foamed aluminum, heating for the first time, and reducing the nickel salt into a nickel simple substance to obtain the foamed aluminum filled with the nickel simple substance;
mixing the foamed aluminum filled with the nickel simple substance and the carbon-containing gas, and heating for the second time to obtain foamed aluminum containing graphene sheets;
and pressurizing to densify the foamed aluminum containing the graphene sheet layers.
The invention uses foamed aluminum to replace aluminum powder/aluminum alloy as aluminum matrix material, which can reduce partial oxygen content, and at the same time, the invention uses foamed aluminum with considerable pores, which can be filled with nickel salt.
Preferably, the aperture of the foamed aluminum is 0.1mm-1mm, and the porosity is 90% -95%.
It is understood that the dimensions of the foamed aluminum may be 7400 mm.
Preferably, the method for filling the nickel salt into the pores of the foamed aluminum is as follows:
immersing the foamed aluminum into a nickel salt solution, and performing ultrasonic treatment;
and taking out the foamed aluminum soaked with the nickel salt solution and drying.
Wherein the nickel salt includes, but is not limited to, nickel chloride.
Preferably, the mass ratio of the nickel salt to the foamed aluminum is (0.5-5): 100. further preferably, the mass ratio of the nickel salt to the foamed aluminum is (1-2): 100.
preferably, the solvent of the nickel salt solution is ethanol, preferably absolute ethanol.
Preferably, the mass volume ratio of the nickel salt to the solvent is (5-20) g: 200 mL.
Preferably, the time of sonication is between 0.5h and 2 h. More preferably, the ultrasound is performed for 1h and at a frequency of 50 Hz. Ensuring that all pores of the foamed aluminum are fully soaked with the nickel salt solution.
It will be understood that after the aluminum foam impregnated with the nickel salt solution is removed, the nickel salt solution adheres to the aluminum foam by capillary action without flowing out, and in this case, is dried.
The drying process parameters are as follows: drying at 79-100 deg.C for 1-3 h under vacuum or inert gas (including nitrogen).
Through the operation, the nickel salt is filled in the pores and is uniformly dispersed in the foamed aluminum. At this time, under the protection of vacuum or inert gas (including nitrogen), the foamed aluminum filled with the nickel salt is heated for the first time, so that the nickel salt is reduced into a nickel simple substance at a high temperature, and the filling of the nickel simple substance in the pores of the foamed aluminum is completed.
Preferably, the first temperature rise is carried out to a temperature of 500-600 ℃.
Preferably, after the temperature is raised to 500-600 ℃, the temperature is maintained for 40-60 min, so that the nickel salt is reduced into the nickel simple substance at high temperature, and the filling of the nickel simple substance in the pores of the foamed aluminum is completed.
The oxidation reduction mode is adopted to form a nickel simple substance, so that the oxygen content can be further reduced.
After a nickel elementary substance is formed in pores of the foamed aluminum, carbon-containing gas is mixed, a gaseous carbon source is introduced, and the temperature is raised for the second time under the protection of vacuum or inert gas (including nitrogen), at the moment, the nickel elementary substance exerts a catalytic effect, and the gaseous carbon source generates a graphene sheet layer on the foamed aluminum under the action of nickel catalysis.
It can be understood that after the gaseous carbon source is catalyzed by nickel to form graphene sheets on the foamed aluminum, the nickel element still remains in the material as a beneficial element to synergistically enhance the aluminum matrix.
Preferably, the second temperature rise is carried out to a temperature of 500-600 ℃.
Preferably, after the temperature is raised to 500-600 ℃, the temperature is kept for 10-20 min, and the growth of the graphene is completed.
The carbon-containing gas is selected from one or more of methane, ethylene and ethanol steam.
Compared with the method of introducing a carbon source by adopting a liquid or solid carbon-containing substance, the method adopts carbon-containing gas, and is more favorable for the graphene to have a good dispersion effect in the foamed aluminum.
After a graphene sheet layer is generated on the foamed aluminum, the foamed aluminum is pressurized under the protection of vacuum or inert gas (including nitrogen), so that the foamed aluminum is densified, and the graphene aluminum composite material is prepared.
Preferably, the pressure is applied for 10MPa-30MPa at the temperature of 500-600 ℃, and the pressure is maintained for 0.5h-2h, so that the foamed aluminum containing the graphene sheet layer is densified.
The method can well disperse the graphene in the foamed aluminum, can effectively reduce the oxygen content in the graphene-aluminum composite material, and the prepared graphene-aluminum composite material has the advantages of obviously improved tensile strength and good conductivity.
The following is a further description with reference to specific examples.
Example 1
The embodiment provides a graphene aluminum composite material and a preparation method thereof, and the preparation method comprises the following steps:
s1, dissolving 10g of nickel chloride in 100mL of absolute ethyl alcohol, and performing ultrasonic dispersion to obtain a nickel chloride solution.
1000g of foamed aluminum with the size of 7400mm, the pore diameter of 0.1mm and the porosity of 95 percent is immersed into the nickel chloride solution, and ultrasonic treatment is carried out for 1h at the frequency of 50Hz, so that all pores of the foamed aluminum are fully immersed into the nickel chloride solution.
And S2, taking out the foamed aluminum soaked with the nickel chloride solution, and drying at 80 ℃ for 2h under vacuum to complete the filling of the nickel chloride in the pores of the foamed aluminum.
S3, placing the foamed aluminum filled with the nickel chloride in the pores into a hot-pressing sintering furnace, heating to 500 ℃ under the protection of nitrogen, preserving the heat for 50min, and reducing the nickel chloride into a nickel simple substance at high temperature to obtain the foamed aluminum filled with the nickel simple substance.
And S4, introducing methane into the hot-pressing sintering furnace, heating to 600 ℃, preserving the heat for 15min, and catalyzing the methane by the nickel to form a graphene sheet layer on the foamed aluminum.
And S5, keeping the temperature in the hot-pressing sintering path at 550 ℃, applying 20MPa of pressure, and maintaining the pressure for 30min to densify the foamed aluminum containing the graphene sheet layer, thereby obtaining the graphene aluminum composite material.
Example 2
The present embodiment provides a graphene aluminum composite material and a preparation method thereof, which are different from those in embodiment 1 in that: the quality of the nickel salt and the foamed aluminum is different from that of the embodiment 1, and the specific steps are as follows:
s1, dissolving 20g of nickel chloride in 100mL of absolute ethyl alcohol, and performing ultrasonic dispersion to obtain a nickel chloride solution.
1000g of foamed aluminum with the size of 7400mm, the pore diameter of 0.1mm and the porosity of 95 percent is immersed into the nickel chloride solution, and ultrasonic treatment is carried out for 1h at the frequency of 50Hz, so that all pores of the foamed aluminum are fully immersed into the nickel chloride solution.
And S2, taking out the foamed aluminum soaked with the nickel chloride solution, and drying at 80 ℃ for 2h under vacuum to complete the filling of the nickel chloride in the pores of the foamed aluminum.
S3, placing the foamed aluminum filled with the nickel chloride in the pores into a hot-pressing sintering furnace, heating to 500 ℃ under the protection of nitrogen, preserving the heat for 50min, and reducing the nickel chloride into a nickel simple substance at high temperature to obtain the foamed aluminum filled with the nickel simple substance.
And S4, introducing methane into the hot-pressing sintering furnace, heating to 600 ℃, preserving the heat for 15min, and catalyzing the methane by the nickel to form a graphene sheet layer on the foamed aluminum.
And S5, keeping the temperature in the hot-pressing sintering path at 550 ℃, applying 20MPa of pressure, and maintaining the pressure for 30min to densify the foamed aluminum containing the graphene sheet layer, thereby obtaining the graphene aluminum composite material.
Example 3
The present embodiment provides a graphene aluminum composite material and a preparation method thereof, which are different from those in embodiment 1 in that: the quality of the nickel salt and the foamed aluminum is different from that of the embodiment 1, and the specific steps are as follows:
s1, dissolving 5g of nickel chloride in 100mL of absolute ethyl alcohol, and performing ultrasonic dispersion to obtain a nickel chloride solution.
1000g of foamed aluminum with the size of 7400mm, the pore diameter of 0.1mm and the porosity of 95 percent is immersed into the nickel chloride solution, and ultrasonic treatment is carried out for 1h at the frequency of 50Hz, so that all pores of the foamed aluminum are fully immersed into the nickel chloride solution.
And S2, taking out the foamed aluminum soaked with the nickel chloride solution, and drying at 80 ℃ for 2h under vacuum to complete the filling of the nickel chloride in the pores of the foamed aluminum.
S3, placing the foamed aluminum filled with the nickel chloride in the pores into a hot-pressing sintering furnace, heating to 500 ℃ under the protection of nitrogen, preserving the heat for 50min, and reducing the nickel chloride into a nickel simple substance at high temperature to obtain the foamed aluminum filled with the nickel simple substance.
And S4, introducing methane into the hot-pressing sintering furnace, heating to 600 ℃, preserving the heat for 15min, and catalyzing the methane by the nickel to form a graphene sheet layer on the foamed aluminum.
And S5, keeping the temperature in the hot-pressing sintering path at 550 ℃, applying 20MPa of pressure, and maintaining the pressure for 30min to densify the foamed aluminum containing the graphene sheet layer, thereby obtaining the graphene aluminum composite material.
Example 4
The present embodiment provides a graphene aluminum composite material and a preparation method thereof, which are different from those in embodiment 1 in that: the method is different from the method in the embodiment 1 in the following steps:
s1, dissolving 10g of nickel chloride in 100mL of absolute ethyl alcohol, and performing ultrasonic dispersion to obtain a nickel chloride solution.
1000g of foamed aluminum with the size of 7400mm, the pore diameter of 0.1mm and the porosity of 95 percent is immersed into the nickel chloride solution, and ultrasonic treatment is carried out for 1h at the frequency of 50Hz, so that all pores of the foamed aluminum are fully immersed into the nickel chloride solution.
And S2, taking out the foamed aluminum soaked with the nickel chloride solution, and drying at 80 ℃ for 2h under vacuum to complete the filling of the nickel chloride in the pores of the foamed aluminum.
S3, placing the foamed aluminum filled with the nickel chloride in the pores into a hot-pressing sintering furnace, heating to 500 ℃ under the protection of nitrogen, preserving the heat for 50min, and reducing the nickel chloride into a nickel simple substance at high temperature to obtain the foamed aluminum filled with the nickel simple substance.
And S4, introducing ethylene into the hot-pressing sintering furnace, heating to 600 ℃, preserving the heat for 15min, and catalyzing the ethylene by nickel to form a graphene sheet layer on the foamed aluminum.
And S5, keeping the temperature in the hot-pressing sintering path at 550 ℃, applying 20MPa of pressure, and maintaining the pressure for 30min to densify the foamed aluminum containing the graphene sheet layer, thereby obtaining the graphene aluminum composite material.
Example 5
The present embodiment provides a graphene aluminum composite material and a preparation method thereof, which are different from those in embodiment 1 in that: the temperature of the first and second temperature increases is different from that of the embodiment 1, and the specific steps are as follows:
s1, dissolving 10g of nickel chloride in 100mL of absolute ethyl alcohol, and performing ultrasonic dispersion to obtain a nickel chloride solution.
1000g of foamed aluminum with the size of 7400mm, the pore diameter of 0.1mm and the porosity of 95 percent is immersed into the nickel chloride solution, and ultrasonic treatment is carried out for 1h at the frequency of 50Hz, so that all pores of the foamed aluminum are fully immersed into the nickel chloride solution.
And S2, taking out the foamed aluminum soaked with the nickel chloride solution, and drying at 80 ℃ for 2h under vacuum to complete the filling of the nickel chloride in the pores of the foamed aluminum.
S3, placing the foamed aluminum filled with the nickel chloride in the pores into a hot-pressing sintering furnace, heating to 400 ℃ under the protection of nitrogen, preserving the temperature for 50min, and reducing the nickel chloride into a nickel simple substance at a high temperature to obtain the foamed aluminum filled with the nickel simple substance.
And S4, introducing methane into the hot-pressing sintering furnace, heating to 600 ℃, preserving the heat for 15min, and catalyzing the methane by the nickel to form a graphene sheet layer on the foamed aluminum.
And S5, keeping the temperature in the hot-pressing sintering path at 550 ℃, applying 20MPa of pressure, and maintaining the pressure for 30min to densify the foamed aluminum containing the graphene sheet layer, thereby obtaining the graphene aluminum composite material.
Comparative example 1
The present embodiment provides a graphene aluminum composite material and a preparation method thereof, which are different from those in embodiment 1 in that: depositing metallic nickel on the surface of the foamed aluminum by adopting an electrochemical nickel plating method, which comprises the following specific steps:
s1, depositing a metal nickel layer on 1000g of foamed aluminum with the size of 7400mm, the pore diameter of 0.1mm and the porosity of 95% by adopting an electrochemical nickel plating method. Wherein the plating solution is 1M nickel sulfate solution, and simultaneously sulfuric acid is used for pH adjustment to ensure that the pH value is between 5.2 and 5.6 and the current density is 10-7A/cm2The temperature was controlled by a water bath to below 35 ℃.
And S2, placing the foamed aluminum deposited with the metallic nickel layer into a hot-pressing sintering furnace.
And S3, introducing methane into the hot-pressing sintering furnace, heating to 600 ℃, and preserving the temperature for 15min to form a graphene sheet layer on the foamed aluminum.
And S4, keeping the temperature in the hot-pressing sintering path at 550 ℃, applying 20MPa of pressure, and maintaining the pressure for 30min to densify the foamed aluminum containing the graphene sheet layer, thereby obtaining the graphene aluminum composite material.
Comparative example 2
The present embodiment provides a graphene aluminum composite material and a preparation method thereof, which are different from those in embodiment 1 in that: the method comprises the following steps of replacing metal nickel with copper:
s1, dissolving 10g of copper chloride in 100mL of absolute ethyl alcohol, and performing ultrasonic dispersion to obtain a copper chloride solution.
1000g of foamed aluminum with the size of 7400mm, the pore diameter of 0.1mm and the porosity of 95 percent is immersed into the copper chloride solution, and the ultrasonic treatment is carried out for 1h at the frequency of 50Hz, so as to ensure that all pores of the foamed aluminum are fully immersed with the copper chloride solution.
And S2, taking out the foamed aluminum soaked with the copper chloride solution, and drying at 80 ℃ for 2h under vacuum to complete the filling of the copper chloride in the pores of the foamed aluminum.
And S3, placing the foamed aluminum filled with the copper chloride in the pores into a hot-pressing sintering furnace, heating to 500 ℃ under the protection of nitrogen, preserving the heat for 50min, and reducing the copper chloride into a copper simple substance at high temperature to obtain the foamed aluminum filled with the copper simple substance.
And S4, introducing methane into the hot-pressing sintering furnace, heating to 600 ℃, and preserving the temperature for 15min to form a graphene sheet layer on the foamed aluminum.
And S5, keeping the temperature in the hot-pressing sintering path at 550 ℃, applying 20MPa of pressure, and maintaining the pressure for 30min to densify the foamed aluminum containing the graphene sheet layer, thereby obtaining the graphene aluminum composite material.
Comparative example 3
The present embodiment provides a graphene aluminum composite material and a preparation method thereof, which are different from those in embodiment 1 in that: the method comprises the following steps of replacing carbon-containing gas with glucose:
s1, dissolving 10g of nickel chloride in 100mL of absolute ethyl alcohol, and performing ultrasonic dispersion to obtain a nickel chloride solution.
1000g of foamed aluminum with the size of 7400mm, the pore diameter of 0.1mm and the porosity of 95 percent is immersed into the nickel chloride solution, and ultrasonic treatment is carried out for 1h at the frequency of 50Hz, so that all pores of the foamed aluminum are fully immersed into the nickel chloride solution.
And S2, taking out the foamed aluminum soaked with the nickel chloride solution, and drying at 80 ℃ for 2h under vacuum to complete the filling of the nickel chloride in the pores of the foamed aluminum.
S3, placing the foamed aluminum filled with the nickel chloride in the pores into a hot-pressing sintering furnace, heating to 500 ℃ under the protection of nitrogen, preserving the heat for 50min, and reducing the nickel chloride into a nickel simple substance at high temperature to obtain the foamed aluminum filled with the nickel simple substance.
And S4, uniformly mixing the foamed aluminum filled with the nickel simple substance and glucose, heating to 600 ℃, preserving the temperature for 15min, and catalyzing the glucose by the nickel to form a graphene sheet layer on the foamed aluminum.
And S5, keeping the temperature in the hot-pressing sintering path at 550 ℃, applying 20MPa of pressure, and maintaining the pressure for 30min to densify the foamed aluminum containing the graphene sheet layer, thereby obtaining the graphene aluminum composite material.
Performance testing
The graphene aluminum composites prepared in examples 1 to 5 and comparative examples 1 to 3 were subjected to conductivity and tensile strength tests. Wherein the content of the first and second substances,
the conductivity test method comprises the following steps: and mechanically polishing the surface of the material, and testing by using an eddy current conductivity meter.
The tensile strength test is: the material was wire cut into a "dog bone" shape with a stretch zone of 18mm, and after surface polishing, tensile testing was performed with a universal laboratory stretcher at a stretch rate of 0.5mm/min, with the results shown in table 1.
TABLE 1
Conductivity/% IACS Tensile strength/MPa
Example 1 61.72 110.79
Example 2 59.76 109.36
Example 3 60.79 103.12
Example 4 60.05 108.26
Example 5 60.96 109.95
Comparative example 1 56.22 109.95
Comparative example 2 61.53 109.95
Comparative example 3 57.64 102.16
As can be seen from table 1, the graphene aluminum composite materials of examples 1 to 5 have good electrical conductivity and high tensile strength, and in the graphene aluminum composite materials prepared in examples 1 to 5, graphene can be uniformly dispersed in aluminum foam, and the composite materials have low oxygen content and high tensile strength.
Comparative example 1, a nickel metal layer is deposited on the surface of the foamed aluminum by using an electrochemical nickel plating method, which is not favorable for uniform dispersion of subsequent graphene on the foamed aluminum and has high oxygen content compared with example 1. The prepared graphene-aluminum composite material is low in conductivity and tensile strength.
Comparative example 2 formed elemental copper in the pores of the foamed aluminum, the tensile strength was slightly poor, and copper also had a potential to affect the corrosion resistance of the aluminum matrix in the aluminum matrix.
Comparative example 3 introduces a solid carbon source, which is not conducive to the formation of uniformly dispersed graphene, and has lower conductivity and lower tensile strength.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (11)

1. The preparation method of the graphene-aluminum composite material is characterized by comprising the following steps:
(1) filling nickel salt into pores of the foamed aluminum, enabling the temperature to be 500-600 ℃, and reducing the nickel salt into a nickel simple substance to obtain the foamed aluminum filled with the nickel simple substance;
(2) mixing the foamed aluminum filled with the nickel simple substance and the carbon-containing gas to ensure that the temperature is 500-600 ℃ to obtain the foamed aluminum containing the graphene sheet layer;
pressurizing to densify the foamed aluminum containing graphene sheet layers;
the nickel salt is nickel chloride;
the aperture of the foamed aluminum is 0.1mm-1 mm;
the carbon-containing gas is selected from one or more of methane, ethylene and ethanol steam;
the mass ratio of the nickel salt to the foamed aluminum is (0.5-5): 100, respectively;
the technological parameters of the pressurization are as follows: pressurizing at 10-30 MPa for 0.5-2 hr.
2. The method for preparing the graphene aluminum composite material according to claim 1, wherein the method for filling the nickel salt into the pores of the foamed aluminum is as follows:
immersing the foamed aluminum into a nickel salt solution, and performing ultrasonic treatment;
and taking out the foamed aluminum soaked with the nickel salt solution and drying.
3. The preparation method of the graphene-aluminum composite material according to claim 2, wherein the time of the ultrasonic treatment is 0.5h-2 h.
4. The method for preparing the graphene-aluminum composite material according to claim 2, wherein the solvent of the nickel salt solution is ethanol.
5. The method for preparing the graphene aluminum composite material according to claim 4, wherein the mass-to-volume ratio of the nickel salt to the solvent is (5-20) g: 200 mL.
6. The preparation method of the graphene aluminum composite material according to claim 1, wherein the mass ratio of the nickel salt to the foamed aluminum is (1-2): 100.
7. the preparation method of the graphene aluminum composite material according to claim 6, wherein the porosity of the foamed aluminum is 90% -95%.
8. The method for preparing a graphene-aluminum composite material according to any one of claims 1 to 7, wherein the temperature of the step (1) is 500 ℃.
9. The method for preparing a graphene aluminum composite material according to any one of claims 1 to 7, wherein the temperature of the step (2) is 600 ℃.
10. The method for preparing the graphene aluminum composite material according to any one of claims 1 to 7, wherein the aluminum foam containing the graphene sheet layers is densified under a pressure of 20MPa for 0.5 h.
11. A graphene-aluminum composite material prepared by the preparation method according to any one of claims 1 to 10.
CN201911415984.9A 2019-12-31 2019-12-31 Graphene-aluminum composite material and preparation method thereof Active CN111101112B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911415984.9A CN111101112B (en) 2019-12-31 2019-12-31 Graphene-aluminum composite material and preparation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911415984.9A CN111101112B (en) 2019-12-31 2019-12-31 Graphene-aluminum composite material and preparation method thereof

Publications (2)

Publication Number Publication Date
CN111101112A CN111101112A (en) 2020-05-05
CN111101112B true CN111101112B (en) 2022-03-18

Family

ID=70425384

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201911415984.9A Active CN111101112B (en) 2019-12-31 2019-12-31 Graphene-aluminum composite material and preparation method thereof

Country Status (1)

Country Link
CN (1) CN111101112B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112768139B (en) * 2020-12-29 2022-09-09 国家高速列车青岛技术创新中心 High-conductivity aluminum wire cable core and preparation method thereof
CN113964297B (en) * 2021-10-21 2024-04-09 中国石油天然气股份有限公司 Porous silicon anode material of lithium ion battery and preparation method and application thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104846230A (en) * 2015-05-27 2015-08-19 苏州阿罗米科技有限公司 Preparation method of aluminum-base graphene composite material
CN105769121A (en) * 2016-02-18 2016-07-20 南京清辉新能源有限公司 Three-dimensional carbon-based pressure sensor making method
US20170317336A1 (en) * 2014-08-07 2017-11-02 Nanotek Instruments, Inc. Process for graphene foam-protected anode active materials for lithium batteries

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170317336A1 (en) * 2014-08-07 2017-11-02 Nanotek Instruments, Inc. Process for graphene foam-protected anode active materials for lithium batteries
CN104846230A (en) * 2015-05-27 2015-08-19 苏州阿罗米科技有限公司 Preparation method of aluminum-base graphene composite material
CN105769121A (en) * 2016-02-18 2016-07-20 南京清辉新能源有限公司 Three-dimensional carbon-based pressure sensor making method

Also Published As

Publication number Publication date
CN111101112A (en) 2020-05-05

Similar Documents

Publication Publication Date Title
CN111101112B (en) Graphene-aluminum composite material and preparation method thereof
CN103328693B (en) There is porous metal bodies and the manufacture method thereof of high corrosion resistance
CN111074292A (en) Electro-catalytic hydrogen production porous high-entropy alloy electrode material and preparation method thereof
CN101709419A (en) Tantalum foam and preparation method thereof
CN105272259A (en) Preparation method of titanium carbide foam ceramic
CN107208294A (en) The manufacture method of nickel alloy porous body
CN111020329A (en) Method for preparing porous tungsten material based on W-Fe-C system corrosion method
CN106756242A (en) A kind of porous foam nickel base alloy and preparation method
CN108609603B (en) Carbon foam containing graphene coating and preparation method thereof
CN107973612B (en) Preparation C by combined use of PCS/LPVCSfMethod for preparing/SiC composite material
CN111318685B (en) Preparation method of titanium-aluminum alloy material, titanium-aluminum alloy material and application thereof
CN109609984A (en) A kind of preparation method of layered carbon nano pipe enhancing Cu-base composites
JPS6123780A (en) Oxygen cathode for electrolyzing alkali chloride and its manufacture
CN111005047B (en) Preparation method of uniform copper electroplating layer of carbon fiber
CN109926588B (en) Preparation method of carbon nano tube reinforced foamed aluminum-based composite material
CN109939716B (en) Nitrogen vacancy carbon-based catalyst for hydrogen production and preparation method thereof
CN113843416B (en) Preparation method and application of copper-coated chromium composite powder based on high-pressure hydrogen reduction method
CN116715219A (en) Negative electrode material, preparation method thereof, negative electrode sheet, battery cell and sodium ion battery
CN102136577A (en) Metal porous body, electrode using the metal porous body for a battery and the method of manufacturing the metal porous body
CN113698220A (en) Preparation method of fiber-reinforced silicon carbide composite material and fiber-reinforced silicon carbide composite material
KR101274979B1 (en) Method for forming coating having carbon nanotube on aluminum alloy and aluminum alloy having the coating
CN114976097B (en) Layered composite graphite polar plate for fuel cell and preparation method thereof
CN112919462B (en) Preparation method of nano activated carbon
CN109252113B (en) High-density supporting plate
CN112647064B (en) Method for carbonizing surface of metal mesh

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