CN107058903B - Graphene/stainless steel composite armor material - Google Patents
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
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- C22C32/0084—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 carbon or graphite as the main non-metallic constituent
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- C22C33/02—Making ferrous alloys by powder metallurgy
- C22C33/0257—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements
- C22C33/0278—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements with at least one alloying element having a minimum content above 5%
- C22C33/0285—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements with at least one alloying element having a minimum content above 5% with Cr, Co, or Ni having a minimum content higher than 5%
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- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
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- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
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Abstract
The invention provides a graphene/stainless steel composite armor material, which comprises the following components in percentage by mass: c is less than or equal to 0.03 percent; si is less than or equal to 1.0 percent; mn is less than or equal to 2.0 percent; p is less than or equal to 0.045%; s is less than or equal to 0.03 percent; 10.0 to 14.0 percent of Ni; 16.0 to 18.0 percent of Cr; 2.0 to 3.0 percent of Mo; the balance being Fe and unavoidable impurities. The method comprises the following steps: preparing a graphene organic solution with the layer number less than 10, coating graphene on stainless steel powder, and mixing the coated graphene/stainless steel powder in a mixer for 20-100 min to obtain the graphene/stainless steel composite armor material. According to the method provided by the invention, graphene is more uniformly dispersed in the metal powder, and graphene nanosheets are uniformly coated on the surface of the stainless steel powder to form a high-quality interface combination; simple process, high production efficiency and contribution to large-scale industrialization.
Description
Technical Field
The invention relates to a composite material, in particular to a graphene/stainless steel composite armor material.
Background
Graphene is a two-dimensional nanomaterial composed of carbon atoms, and is in a single-layer sheet structure (with a thickness of only a few nanometers). Due to the unique two-dimensional honeycomb crystal structure and extremely high bond strength, the nano material is the hardest nano material with the highest specific strength in the world at present, and the breaking strength of the nano material is as high as 130 Gpa.
The graphene and metal composite process method mainly comprises two methods at present: melt casting and powder metallurgy. When the graphene stainless steel composite material is prepared by a melting casting method, due to the large density difference between graphene and metal, the graphene is difficult to be uniformly dispersed in stainless steel liquid, and in addition, the graphene and the metal can also have high-temperature interface reaction in the material preparation process, so that the material performance is deteriorated. Therefore, the graphene stainless steel composite material is prepared by a melting casting method less frequently. When the graphene stainless steel composite material is prepared by adopting a powder metallurgy method, powder with uniformly mixed graphene and stainless steel is obtained firstly, and then the graphene stainless steel composite block material is prepared by subsequent pressure processing, so that high-temperature interface reaction brought by the traditional melting casting method is inhibited to the maximum extent. Therefore, the graphene stainless steel composite material is generally prepared by a powder metallurgy method.
At present, light armored vehicles always adopt steel bulletproof armors, and armed helicopters adopt titanium alloy bulletproof armors. However, future war will put more and more demands on the remote delivery capability of the army and the payload capacity of the armed helicopter, which will put severe demands on the weight of the equipment, so that the steel armor and titanium alloy armor used before can not meet the development requirements of the future weaponry. It is therefore desirable to provide a composite armor material that is low in density, low in cost, and easy to mass produce.
For the stainless steel matrix composite material, whether the distribution of the reinforced phase in the stainless steel matrix is uniform, whether the reinforced phase is agglomerated and whether the interface combination is tight directly determines the performance of the composite material. The graphene has the problems of small size, large specific surface area, difficult dispersion and easy agglomeration, so that how to realize the uniform dispersion of the graphene in a stainless steel matrix is a key technology needing to be broken through for preparing the graphene stainless steel composite material. Particularly, when the graphene stainless steel composite material is prepared by adopting a powder metallurgy method, the premise and the basis for preparing the high-quality graphene stainless steel composite material are that how to obtain the mixed powder in which the graphene is uniformly dispersed in the stainless steel powder. In addition, the existing mixing equipment for preparing the composite material has poor wear resistance, large volume and short service life.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides the graphene/stainless steel composite armor material, the method is a new process and method by improving the mixing method of the graphene and the stainless steel powder, and the method can uniformly coat the graphene nanosheets on the surface of the metal powder to realize uniform mixing of the graphene and the metal powder.
The purpose of the invention is realized by adopting the following technical scheme:
the graphene and stainless steel composite armor material is characterized by comprising the following components in percentage by mass: c is less than or equal to 0.03 percent; si is less than or equal to 1.0 percent; mn is less than or equal to 2.0 percent; p is less than or equal to 0.045%; s is less than or equal to 0.03 percent; 10.0 to 14.0 percent of Ni; 16.0 to 18.0 percent of Cr; 2.0 to 3.0 percent of Mo; the balance being Fe and unavoidable impurities.
Further, the stainless steel comprises the following components in percentage by mass: c is less than or equal to 0.12 percent; si is less than or equal to 1.0 percent; mn is less than or equal to 2.0 percent; s is less than or equal to 0.03 percent; p is less than or equal to 0.035%; cr: 18.0-19.0%; ni: 8.0-11.0%; ti: 0.1-0.8%; the balance Fe and inevitable impurities.
Further, the stainless steel comprises the following components in percentage by mass: cr:18.0 percent.
Further, the stainless steel comprises the following components in percentage by mass: ni:10.0 percent.
Further, the stainless steel comprises the following components in percentage by mass: ti: 0.6 percent.
The graphene/stainless steel composite armor material is characterized in that the preparation method of the material comprises the following steps:
1) preparing a nanosheet organic solution with the graphene layer number less than 10: treating the organic solution graphene dispersion in a centrifugal nano dispersion machine at the rotating speed of 7000-9000 rpm and the linear speed of 85-115 m/s;
2) graphene-coated stainless steel powder: spraying the organic solution graphene dispersion obtained in the step 1) on stainless steel powder rotating in a mixer by using a spraying device with a shower head mesh size of 60-280 microns;
3) and (3) mixing the stainless steel powder coated with the graphene in a mixer for 20-100 min to obtain the graphene and stainless steel composite armor material.
Further, the graphene-coated stainless steel powder prepared by the method comprises the following components in percentage by mass: 0.05 to 9 percent of graphene and 91 to 99.95 percent of stainless steel powder; the particle size of the stainless steel powder is 10-100 mu m; the mesh size of the shower head is 100-200 mu m.
Further, the rotation speed of the centrifugal nano dispersion machine is 8000rpm, and the linear speed is 100 m/s; the speed of the mixer was 1000 rpm.
Further, the organic solvent in the nanosheet organic solution is one or more of ethanol, NPM, polyethylene glycol and/or PVP, and the concentration of the organic solvent is 20-100%.
Further, the organic solvent in the nanosheet organic solution is absolute ethyl alcohol.
Compared with the closest prior art, the technical scheme provided by the invention has the following beneficial effects:
1. the graphene/stainless steel composite armor material provided by the invention realizes uniform coating of graphene on the surface of stainless steel powder, and is beneficial to formation of a high-quality graphene metal interface combination body by using the graphene metal composite material.
2. According to the preparation method of the graphene and stainless steel composite armor material, provided by the invention, the graphene is not easy to agglomerate, and the phenomena of secondary agglomeration and re-solidification and dispersion are avoided.
3. The preparation method of the graphene and stainless steel composite armor material provided by the invention does not need solidification or rolling, and avoids hardening or agglomeration.
4. According to the preparation method of the graphene and stainless steel composite armor material, vibration and screening are not needed, so that the defect of uneven distribution of graphene and stainless steel powder is overcome.
5. The graphene/stainless steel composite armor material provided by the invention is simple in process operation, low in manufacturing cost and high in production efficiency.
6. According to the graphene/stainless steel composite armor material provided by the invention, heating and drying are not needed, so that graphene is better coated on the surface of stainless steel powder, the graphene/stainless steel composite armor material is environment-friendly and safe, and the preparation period is shortened.
7. The nano dispersion machine prepared by the selected materials greatly prolongs the service life and reduces the volume.
Drawings
Fig. 1 is a schematic structural diagram of a centrifugal nano-disperser used in a method for preparing a graphene and stainless steel composite armor material according to an embodiment of the present invention;
FIG. 2 is a Scanning Electron Micrograph (SEM) of a graphene and stainless steel composite armor material made according to an embodiment of the present invention;
FIG. 3 is a Scanning Electron Micrograph (SEM) of a graphene and stainless steel composite armor material made according to a comparative example of the present invention.
Detailed Description
The present invention will be described in detail with reference to specific examples.
The centrifugal nanometer dispersion machine comprises a centrifugal rotating disc 1, a fixed disc 2, a circulating stirring device 3 and a casing 5, wherein the centrifugal rotating disc 1 is positioned below a driving device 4 and driven by the driving device, the fixed disc 2 is arranged opposite to the centrifugal rotating disc 1 and is provided with a central hole, the circulating stirring device 3 is arranged below the fixed disc 2, a feeding hole of the circulating stirring device 3 is communicated with the central hole, and a discharging hole is positioned on one side of the fixed disc 2; the distance between the centrifugal rotating disc 1 and the fixed disc 2 is 0.2 mm; the circulation stirring device 3 is used for circulating and stirring the organic solution. The centrifugal rotating disc is prepared from the following components in percentage by mass: c: 0.12 to 0.20; si: less than or equal to 0.30; mn: 0.30 to 0.70; s: less than or equal to 0.045; p: less than or equal to 0.045; cr: the allowable residual content is less than or equal to 0.30; ni: the allowable residual content is less than or equal to 0.30; cu: the allowable residual content is less than or equal to 0.30. The circulating stirring device is a centrifugal stirrer for stirring outside the tank, and a stirring paddle of the centrifugal stirrer is prepared from the following components in percentage by mass: c is less than or equal to 0.08; mn is less than or equal to 2.00; p is less than or equal to 0.045; s is less than or equal to 0.030; si is less than or equal to 1.00; cr:18.0 to 20.0; 8.0 to 11.0% of Ni.
The shell is prepared from the following components in percentage by mass: 70 parts of polycarbonate and 30 parts of polyacrylonitrile alloy. The polyacrylonitrile alloy is prepared from the following components in percentage by mass: 15-35% of acrylonitrile, 5-30% of butadiene and 40-60% of styrene.
Example 1:
the embodiment provides a preparation method of a graphene and stainless steel composite armor material, which comprises the following specific steps:
the graphene-coated stainless steel powder comprises the following components in parts by mass: 0.05% of graphene and 99.95% of stainless steel. Graphene can be prepared by Hummer's method. The stainless steel comprises the following components in percentage by mass: c: 0.03 percent; si: 0.5 percent; mn: 2.0 percent; p: 0.04 percent; 12.0 percent of Ni; 16.0 percent of Cr; 3.0 percent of Mo; the balance of Fe and inevitable impurities; the particle size of the stainless steel powder was 10 μm.
1) Carrying out ultrasonic dispersion on graphene in an alcohol solution with the concentration of 95%, and then placing the graphene in a centrifugal nano dispersion machine with the rotation speed of 9000rpm and the linear speed of 115m/s to obtain a graphene alcohol solution after centrifugal dispersion, wherein the graphene alcohol solution contains more than 90% of all graphene nano sheets with the number of graphene nano sheet layers being less than 10;
2) atomizing the graphene nanosheet organic solution into small liquid drops through a spraying device with a shower head mesh size of 60 micrometers under pressure, and uniformly spraying the small liquid drops on stainless steel powder rotating in a high-efficiency mixer at 1200 rpm; wherein, the volatile solvent is recovered by the condensation recovery device, and the recovery and the reutilization can also be realized by other modes.
3) After the graphene alcohol solution is sprayed, the high-efficiency mixer continues to operate for 100 min;
4) and taking out the uniformly mixed graphene coated stainless steel powder from the efficient mixer.
Example 2:
the graphene-coated stainless steel powder comprises the following components in parts by weight: 9% of graphene and 91% of stainless steel. The stainless steel comprises the following components in percentage by mass: c: 0.02 percent; mn: 1.0 percent; s: 0.02 percent; 14.0 percent of Ni; 17.0 percent of Cr; 2.0 percent of Mo; the balance being Fe and unavoidable impurities. The particle size of the stainless steel powder was 100. mu.m.
1) Carrying out ultrasonic dispersion on graphene in an alcohol solution with the concentration of 95%, and then placing the graphene in a centrifugal nano dispersion machine with the rotation speed of 8000rpm and the linear speed of 100m/s to obtain a graphene alcohol solution after centrifugal dispersion, wherein the graphene nano sheet in the graphene alcohol solution has the number of layers below 10 and accounts for more than 90% of all graphene nano sheets;
2) atomizing the graphene nanosheet organic solution into small liquid drops through a spraying device with the mesh size of 100 micrometers of a shower head under pressure, and uniformly spraying the small liquid drops to stainless steel powder rotating in a high-efficiency mixer at 1000 rpm;
3) after the graphene alcohol solution is sprayed, the high-efficiency mixer continues to operate for 40 min;
4) and taking out the uniformly mixed powder of the graphene coated stainless steel from the high-efficiency mixer.
Example 3
The graphene-coated stainless steel powder comprises the following components in parts by weight: 5% of graphene and 95% of stainless steel. The stainless steel comprises the following components in percentage by mass: si: 1.0 percent; p: 0.045%; s: 0.03 percent; 10.0 percent of Ni; 18.0 percent of Cr; 2.5 percent of Mo; the balance being Fe and unavoidable impurities. The stainless steel powder had a particle size of 60 μm.
1) Carrying out ultrasonic dispersion on graphene in an organic solvent (40% alcohol solution), and then placing the graphene in a centrifugal nano-dispersion machine with the rotation speed of 7000rpm and the linear speed of 85m/s to obtain a centrifugally dispersed graphene nano-sheet organic solution, wherein the graphene nano-sheet organic solution comprises more than 90% of all graphene nano-sheets with the number of graphene nano-sheet layers being less than 10;
2) atomizing the graphene nanosheet organic solution into small liquid drops through a spraying device with the size of 180 mu m of the mesh of a shower head under pressure, and uniformly spraying the small liquid drops on the rotating stainless steel powder in a high-efficiency mixer at 1100 rpm;
3) after all the organic solution of the graphene nanosheets is sprayed, the efficient mixing machine continues to operate for 100 min;
4) and taking out the uniformly mixed powder of the graphene coated stainless steel from the high-efficiency mixer.
Example 4
The graphene-coated stainless steel powder comprises the following components in parts by weight: 0.05% of graphene and 99.95% of stainless steel. The stainless steel comprises the following components in percentage by mass: c: 0.04 percent; mn: 2.0 percent; p: 0.03 percent; cr: 19.0 percent; ni: 9.0 percent; ti: 0.1 percent; the balance Fe and inevitable impurities. The particle size of the stainless steel powder was 10 μm.
1) Carrying out ultrasonic dispersion on graphene in an organic solvent (polyethylene glycol solution with the concentration of 100%), then placing the graphene in a centrifugal nano-dispersion machine with the rotation speed of 8000rpm and the linear speed of 100m/s to obtain a graphene nano-sheet organic solution after centrifugal dispersion, wherein the graphene nano-sheet organic solution comprises more than 90% of all graphene nano-sheets with the number of graphene nano-sheet layers being less than 10;
2) atomizing the graphene nanosheet organic solution into small liquid drops through a spraying device with the shower head mesh size of 280 microns under pressure, and uniformly spraying the small liquid drops to stainless steel powder rotating in a high-efficiency mixer at 1000 rpm;
3) after all the organic solution of the graphene nanosheets is sprayed, the efficient mixing machine continues to operate for 20 min;
4) and taking out the uniformly mixed powder of the graphene coated stainless steel from the high-efficiency mixer.
Example 5
The graphene-coated stainless steel powder comprises the following components in parts by weight: 9% of graphene and 91% of stainless steel. The stainless steel comprises the following components in percentage by mass: c: 0.12 percent; si: 0.4 percent; s: 0.03 percent; p: 0.035%; cr:17.0 percent; ni:8.0 percent; ti: 0.4 percent; the balance Fe and inevitable impurities. The particle size of the stainless steel powder was 100. mu.m.
1) Carrying out ultrasonic dispersion on graphene in an organic solvent (40% alcohol solution), and then placing the graphene in a centrifugal nano-dispersion machine with the rotation speed of 7000rpm and the linear speed of 85m/s to obtain a centrifugally dispersed graphene nano-sheet organic solution, wherein the graphene nano-sheet organic solution comprises more than 90% of all graphene nano-sheets with the number of graphene nano-sheet layers being less than 10;
2) atomizing the graphene nanosheet organic solution into small liquid drops through a spraying device with the shower head mesh size of 170 micrometers under pressure, and uniformly spraying the small liquid drops to stainless steel powder rotating in an efficient mixer at 800 rpm;
3) after the graphene nanosheet organic solution is completely sprayed, keeping the high-efficiency mixer to continue operating for 30 min;
4) and taking out the uniformly mixed graphene coated stainless steel powder from the high-efficiency mixer.
Example 6
The graphene-coated stainless steel powder comprises the following components in parts by weight: 5% of graphene and 95% of stainless steel. The stainless steel comprises the following components in percentage by mass: si: 1.0 percent; mn: 1.0 percent; s: 0.02 percent; cr:18.0 percent; ni: 11.0 percent; ti: 0.8 percent; the balance Fe and inevitable impurities. The stainless steel powder had a particle size of 60 μm.
1) Carrying out ultrasonic dispersion on graphene in an organic solvent (40% alcohol solution), and then placing the graphene in a centrifugal nano-dispersion machine with the rotation speed of 7000rpm and the linear speed of 85m/s to obtain a centrifugally dispersed graphene nano-sheet organic solution, wherein the graphene nano-sheet organic solution comprises more than 90% of all graphene nano-sheets with the number of graphene nano-sheet layers being less than 10;
2) atomizing the graphene nanosheet organic solution into small liquid drops through a spraying device with the mesh size of 200 mu m of a shower head under pressure, and uniformly spraying the small liquid drops to stainless steel powder rotating in an efficient mixer at 800 rpm;
3) after the graphene nanosheet organic solution is completely sprayed, keeping the efficient mixing machine to continuously operate for 100 min;
4) and taking out the uniformly mixed graphene coated stainless steel powder from the high-efficiency mixer.
Comparative example 1
1) Mixing stainless steel atomized powder with the granularity of 40 mu m and graphene (the addition amount is 0.1-5.0 wt.% of the graphene/stainless steel composite material) in a powder mixer with the rotation speed of 10-30 r/min for 24-48 h;
2) putting the mixed powder prepared in the step (1) into a mixer with the rotating speed of 100-200 r/min for mixing for 10-30 min;
3) putting the prepared mixed powder, grinding balls and stearic acid into a stirring type ball mill, filling liquid nitrogen, and beginning ball milling when all the grinding balls are immersed by the liquid nitrogen, wherein the ball-material ratio is 40: 1;
4) and (4) after ball milling is carried out for 2-4 hours at a low temperature, taking out the powder, placing the powder in an inert gas protection box, and taking out the powder after the temperature is restored to the room temperature.
As can be seen from fig. 2 to 3, the stainless steel powder is not coated with graphene in the mixed powder obtained by the method provided by the comparative example, but the mixed powder obtained by the method provided by the embodiment of the present invention is completely and uniformly coated with graphene on the surface of the stainless steel powder, and forms a good interface combination with the substrate.
According to the method provided by the embodiment of the invention, the graphene is coated on the surface of the stainless steel powder, so that high-quality graphene metal interface combination can be formed in the graphene metal composite material; the graphene is not easy to agglomerate, and the phenomena of secondary agglomeration and re-solidification dispersion are avoided; solidification and rolling are not needed, and hardening or agglomeration is avoided; vibration and screening are not needed, so that uneven distribution of graphene and stainless steel powder caused by the vibration is avoided; the process operation is simple, the manufacturing cost is low, and the production efficiency is high; the graphene is better coated on the surface of the stainless steel powder without heating or drying, so that the graphene is environment-friendly and safe, and the preparation period is shortened.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: modifications and equivalents may be made to the embodiments of the invention without departing from the spirit and scope of the invention, which is to be covered by the claims.
Claims (9)
1. The graphene/stainless steel composite armor material is characterized in that the stainless steel comprises the following components in percentage by mass: c is less than or equal to 0.03 percent; si is less than or equal to 1.0 percent; mn is less than or equal to 2.0 percent; p is less than or equal to 0.045%; s is less than or equal to 0.03 percent; 10.0 to 14.0 percent of Ni; 16.0 to 18.0 percent of Cr; 2.0 to 3.0 percent of Mo; the balance of Fe and inevitable impurities;
the preparation method of the graphene/stainless steel composite armor material comprises the following steps:
1) preparing a nanosheet organic solution with the graphene layer number less than 10: treating the organic solution graphene dispersion in a centrifugal nano dispersion machine at the rotating speed of 7000-9000 rpm and the linear speed of 85-115 m/s;
2) graphene-coated stainless steel powder: spraying the organic solution graphene dispersion obtained in the step 1) on stainless steel powder rotating in a mixer by using a spraying device with a shower head mesh size of 60-280 microns;
3) and (3) mixing the stainless steel powder coated with the graphene in a mixer for 20-100 min to obtain the graphene and stainless steel composite armor material.
2. The graphene/stainless steel composite armor material is characterized in that the stainless steel comprises the following components in percentage by mass: c is less than or equal to 0.12 percent; si is less than or equal to 1.0 percent; mn is less than or equal to 2.0 percent; s is less than or equal to 0.03 percent; p is less than or equal to 0.035%; cr: 18.0-19.0%; ni: 8.0-11.0%; ti: 0.1-0.8%; the balance Fe and inevitable impurities;
the preparation method of the graphene/stainless steel composite armor material comprises the following steps:
1) preparing a nanosheet organic solution with the graphene layer number less than 10: treating the organic solution graphene dispersion in a centrifugal nano dispersion machine at the rotating speed of 7000-9000 rpm and the linear speed of 85-115 m/s;
2) graphene-coated stainless steel powder: spraying the organic solution graphene dispersion obtained in the step 1) on stainless steel powder rotating in a mixer by using a spraying device with a shower head mesh size of 60-280 microns;
3) and (3) mixing the stainless steel powder coated with the graphene in a mixer for 20-100 min to obtain the graphene and stainless steel composite armor material.
3. The graphene/stainless steel composite armor material according to any of claim 1 or claim 2, wherein said stainless steel comprises the following components in mass percent: cr:18.0 percent.
4. The graphene/stainless steel composite armor material according to any of claim 1 or claim 2, wherein said stainless steel comprises the following components in mass percent: ni:10.0 percent.
5. The graphene/stainless steel composite armor material of claim 2, wherein said stainless steel comprises the following components in mass percent: ti: 0.6 percent.
6. The graphene/stainless steel composite armor material according to any of claim 1 or claim 2, wherein said method produces a graphene-coated stainless steel powder comprising, in mass percent: 0.05 to 9 percent of graphene and 91 to 99.95 percent of stainless steel powder; the particle size of the stainless steel powder is 10-100 mu m; the mesh size of the shower head is 100-200 mu m.
7. The graphene/stainless steel composite armor material of any of claims 1 or 2, wherein the centrifugal nano-disperser has a rotation speed of 8000rpm and a linear velocity of 100 m/s; the speed of the mixer was 1000 rpm.
8. The graphene/stainless steel composite armor material according to claim 1, wherein the organic solvent in the nanosheet organic solution is one or more of ethanol, NPM, polyethylene glycol and/or PVP, and the concentration of the organic solvent is 20-100%.
9. The graphene/stainless steel composite armor material of claim 1, wherein the organic solvent in said nanosheet organic solution is absolute ethanol.
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| CN102496721A (en) * | 2011-12-21 | 2012-06-13 | 浙江大学 | Graphene-based composite lithium ion battery film cathode material and preparation method thereof |
| CN105861865A (en) * | 2016-06-03 | 2016-08-17 | 南昌航空大学 | Method for preparing graphene reinforced aluminum matrix composite material by microwave sintering |
| CN105908053A (en) * | 2016-05-27 | 2016-08-31 | 天津平高智能电气有限公司 | Graphene-stainless steel composite material and preparation method and application thereof |
| CN105903953A (en) * | 2016-06-17 | 2016-08-31 | 武汉科技大学 | Stainless steel/graphene composite powder for powder metallurgy and preparing method of stainless steel/graphene composite powder |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102496721A (en) * | 2011-12-21 | 2012-06-13 | 浙江大学 | Graphene-based composite lithium ion battery film cathode material and preparation method thereof |
| CN105908053A (en) * | 2016-05-27 | 2016-08-31 | 天津平高智能电气有限公司 | Graphene-stainless steel composite material and preparation method and application thereof |
| CN105861865A (en) * | 2016-06-03 | 2016-08-17 | 南昌航空大学 | Method for preparing graphene reinforced aluminum matrix composite material by microwave sintering |
| CN105903953A (en) * | 2016-06-17 | 2016-08-31 | 武汉科技大学 | Stainless steel/graphene composite powder for powder metallurgy and preparing method of stainless steel/graphene composite powder |
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