CN107146650B - A kind of Ag-MXene contact material and preparation method and purposes - Google Patents
A kind of Ag-MXene contact material and preparation method and purposes Download PDFInfo
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- CN107146650B CN107146650B CN201710303531.1A CN201710303531A CN107146650B CN 107146650 B CN107146650 B CN 107146650B CN 201710303531 A CN201710303531 A CN 201710303531A CN 107146650 B CN107146650 B CN 107146650B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/02—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of metals or alloys
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/04—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of carbon-silicon compounds, carbon or silicon
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
Abstract
The invention discloses a kind of Ag-MXene contact material and preparation method thereof and purposes.Wherein reinforced phase MXene includes Ti3C2,Ti2C, Ta4C3, Ti3CN, Nb2C, V2C, Nb4C3, (Ti0.5,Nb0.5)2C, (V0.5,Cr0.5)3C2.Preparation method is the following steps are included: 1. ratio by mass percentage weighs Ag powder and MXene powder；2. above-mentioned weighed Ag-MXene powder is sufficiently mixed, obtain a homogeneous mixture；3. mixed powder is placed in mold and is pressed into green body；4. green body is placed in sintering furnace, under inert atmosphere or vacuum protection, treatment temperature is heated to certain heating rate and is kept the temperature, contact material is obtained.Raw material according to the present invention is easy to get, and device therefor and preparation process are simple, and production process environmental protection, product is suitble to large-scale application in the low voltage switchs material such as contactor, relay, breaker.
Description
Technical field
The present invention relates to a kind of composite materials, and in particular to a kind of Ag-MXene contact material and preparation method and purposes,
Belong to contact material technical field.
Background technique
Contact is the core component of low tension switch, is responsible for connection, carrying and breaking current, performance and is directly related to electric appliance
The reliability of equipment.Ideal contact material should have good conductive, thermally conductive, anti-melting welding, the transfer of anti-material, anti electric arc corrosion
Energy and low and stable contact resistance.Ag base contact material is most widely used in low tension switch, it is common have Ag/CdO,
Ag/SnO2, Ag/ZnO, Ag/Ni, Ag/C, Ag/W, Ag/WC etc., properity and in terms of with their own characteristics.Its
In, omnipotent contact " Ag/CdO " performance is the most excellent, is most widely used, but the toxicity of Cd forces it to be gradually backed out contact city
?.And Ag/SnO2, there is also various problems for the alternative materials such as Ag/ZnO, Ag/Ni, Ag/C, Ag/W, Ag/WC, such as
Poor in processability, contact resistance are big, temperature rise is obvious, anti electric arc corrosion ability and resistance fusion welding energy difference etc..With the development of science and technology boat
Low tension switch Ag base is touched in the fast development of the industries such as its aviation, bullet train, electric car, smart grid, intelligent electric appliance
More stringent requirements are proposed for the performance of head material, and exploitation novel contact material is extremely urgent.
2011, a kind of novel transition metal carbide Ti3C2Into the visual field of people, it is named as " MXene "
(M.W.Barsoum etc., Adv.Mater., 2011,23 (37): 4248-4253).Up to the present, in addition to Ti3C2, made
The also Ti of standby and confirmation MXene2C, Ta4C3, Ti3CN, (Ti0.5,Nb0.5)2C, (V0.5,Cr0.5)3C2(M.Naguib etc.,
ACS Nano, 2012,6 (2): 1322-1331), Nb2C, V2C (M.Naguib etc., J.Am.Chem.Soc., 2013,135 (43):
15966-15969), Nb4C3(M.W.Barsoum, Chem.Commun., 2014,50 (67): 9517-9520) etc..MXene is one
Kind is similar to the nano lamellar material of graphene, and this special nanometer laminated structure imparts its new characteristic and application is latent
Power.Excellent electric conductivity and ductility allow MXene to match in excellence or beauty multi-layer graphene, are hopeful very much to be applied to lithium ion battery
(J.C.Lei, Front.Phys., 2015,10 (3): 276-286) and supercapacitor (M.Q.Zhao, Adv.Mater.,
2015,27 (2): 339-345) in.Surface-functionalized MXene has characteristic of semiconductor, can be used as energy conversion at high temperature
Material (M.Khazaei, Phys.Chem.Chem.Phys., 2014,16 (17): 7841-7849).In addition, multilayered structure and big
Specific surface area make MXene have potential absorption property, get a good chance of playing a role in heavy metal adsorption and hydrogen storage field
(Q.Hu,J.Phys.Chem.A,2013,117(51):14253-14260).In MXene, due to without A atomic layer,
Chemical property is more stable compared with MAX.In addition, structure makes MXene possess excellent rub similar to the layer structure of multi-layer graphene
Wiping and processing performance.Therefore, MXene special structure and property let us see it as Ag base contact material reinforced phase
Potentiality.Currently, there is not yet MXene is applied to the relevant report of contact material as reinforced phase, thus it is novel to develop one kind
Ag/MXene contact material means a great, and gets a good chance of substituting the conventional contacts material large-scale applications such as Ag/CdO in low in future
It compresses switch.
Summary of the invention
Technical problem: the present invention provides a kind of Ag-MXene contact material and its preparation method and application, the composite woods
Expect that environment-protecting and non-poisonous, preparation process is simple, Yi Shixian industrialization, is suitble to large-scale application in low tension switch field.The composite contact
Material can solve at present application in contact material there are the problem of: including toxic, temperature rise is big, contact resistance is high, arc resistant
Erosiveness is poor, resistance fusion welding is strong etc..
Technical solution: a kind of Ag-MXene contact material of the invention, in the contact material, Ag accounts for the contact material
Mass percent be the mass percent that 50~99%, MXene accounts for the contact material be 1~50%.
Wherein, the MXene includes following components: Ti3C2、Ti2C、Ta4C3, Ti3CN、Nb2C、V2C、Nb4C3、(Ti0.5,
Nb0.5)2C or (V0.5,Cr0.5)3C2。
The preparation method of Ag-MXene contact material of the invention includes the following steps:
Step S1: ratio by mass percentage weighs Ag powder and MXene powder；
Step S2: the Ag-MXene powder in step S1 is sufficiently mixed, be uniformly mixed powder；
Step S3: mixed powder obtained in step S2 is placed in mold and is pressed into green body；
Step S4: green body obtained in step S3 is placed in sintering furnace, under inert atmosphere or vacuum protection, with setting
Heating rate be heated to treatment temperature and keep the temperature, the contact material can be obtained.
Wherein, in step S1, the partial size of the Ag powder is 1~100 μm, and the MXene purity is greater than 90%, partial size 1
~100 μm.
In step S2, the powder, which is sufficiently mixed, refers to 5~25h of wet-mixing.
In step S3, the pressure of the compacting is 10~800MPa.
In step S4, the inert atmosphere is Ar gas or nitrogen.The heating rate is 1~50 DEG C/min.The place
Managing temperature is 500~1200 DEG C；The soaking time is 0.5~5h.
Ag-MXene contact material of the invention is suitable for the low voltage switch equipment of contactor, relay, breaker.
The utility model has the advantages that compared with prior art, the present invention having the advantage that
1) the reinforced phase MXene of contact material is mainly made of Ti, C, N, Nb, V etc., asepsis environment-protecting；
2) wet mixing process is utilized, being sufficiently mixed for raw material powder is conducive to；
3) it can be obtained the contact material under normal pressure and in ordinary sinter furnace, equipment is simple, low in cost, is suitble to big
Large-scale production；
4) the Ag-MXene composite contact material even tissue that the technology is prepared, soilless sticking phenomenon；
5) the Ag-MXene composite contact material density prepared is high, and hardness is moderate, excellent electric conductivity, anti electric arc corrosion and
Resistance fusion welding can be excellent, is suitble to large-scale application in the low tension switches such as contactor, relay, breaker field.
Specific embodiment
The present invention is described in detail below with reference to example:
Embodiment 1:
According to mass fraction shared by material: Ag (50%), Ti3C2(50%), Ag powder 5g, Ti are weighed3C2Powder 5g；Mixing
Afterwards, it is pressed into green body at 10MPa, under vacuum protection, is heated to 500 DEG C with the heating rate of 1 DEG C/min, keeps the temperature 0.5h,
Ag-50%Ti is obtained after cooling3C2Contact material.Density 8.621g/cm3, hardness HV60, resistivity 28 × 10-3μΩ·m。
Embodiment 2:
According to mass fraction shared by material: Ag (65%), Ta4C3(35%), Ag powder 9.29g, Ti are weighed3C2Powder 5g；It is mixed
After conjunction, green body is pressed at 50MPa；Under Ar atmosphere protection, 600 DEG C are heated to the heating rate of 6 DEG C/min, heat preservation
0.8h obtains Ag-35%Ta after cooling4C3Contact material.Density 8.651g/cm3, hardness HV62, resistivity 29 × 10-3μΩ·
m。
Embodiment 3:
According to mass fraction shared by material: Ag (70%), Ti3CN (30%) weighs Ag powder 11.67g, Ti3C2Powder 5g；
After mixing, green body is pressed at 100MPa；Under nitrogen atmosphere protection, 700 DEG C are heated to the heating rate of 10 DEG C/min, is protected
Warm 1h obtains Ag-30%Ti after cooling3CN contact material.Density 8.633g/cm3, hardness HV66, resistivity 30 × 10-3μ
Ω·m。
Embodiment 4:
According to mass fraction shared by material: Ag (75%), Ti2C (25%) weighs Ag powder 15g, Ti3C2Powder 5g；Mixing
Afterwards, green body is pressed at 200MPa；Under Ar atmosphere or vacuum protection, 800 DEG C are heated to the heating rate of 15 DEG C/min,
2h is kept the temperature, obtains Ag-25%Ti after cooling2C contact material.Density 8.627g/cm3, hardness HV63, resistivity 27 × 10-3μ
Ω·m。
Embodiment 5:
According to mass fraction shared by material: Ag (80%), Nb2C (20%) weighs Ag powder 20g, Ti3C2Powder 5g；Mixing
Afterwards, green body is pressed at 300MPa；Under nitrogen atmosphere or vacuum protection, 900 DEG C are heated to the heating rate of 20 DEG C/min,
3h is kept the temperature, obtains Ag-20%Nb after cooling2C contact material.Density 8.639g/cm3, hardness HV61, resistivity 31 × 10-3μ
Ω·m。
Embodiment 6:
According to mass fraction shared by material: Ag (85%), V2C (15%) weighs Ag powder 28.33g, Ti3C2Powder 5g；It is mixed
After conjunction, green body is pressed at 400MPa；Under Ar atmosphere protection, 1000 DEG C are heated to the heating rate of 30 DEG C/min, is protected
Warm 3.5h obtains Ag-15%V after cooling2C contact material.Density 8.642g/cm3, hardness HV65, resistivity 28 × 10-3μ
Ω·m。
Embodiment 7:
According to mass fraction shared by material: Ag (90%), Nb4C3(10%), Ag powder 45g, Ti are weighed3C2Powder 5g；Mixing
Afterwards, green body is pressed at 500MPa；Under nitrogen atmosphere or vacuum protection, 1100 are heated to the heating rate of 40 DEG C/min
DEG C, 4h is kept the temperature, obtains Ag-10%Nb after cooling4C3Contact material.Density 8.622g/cm3, hardness HV62, resistivity 32 × 10-3
μΩ·m。
Embodiment 8:
According to mass fraction shared by material: Ag (95%), (Ti0.5,Nb0.5)2C (5%) weighs Ag powder 95g, Ti3C2Powder
5g；After mixing, green body is pressed at 600MPa；Under Ar atmosphere or vacuum protection, heated with the heating rate of 45 DEG C/min
To 1150 DEG C, 5h is kept the temperature, obtains Ag-5% (Ti after cooling0.5,Nb0.5)2C contact material.Density 8.653g/cm3, hardness
HV67, resistivity 34 × 10-3μΩ·m。
Embodiment 9:
According to mass fraction shared by material: Ag (99%), (V0.5,Cr0.5)3C2(1%), Ag powder 495g, Ti are weighed3C2
Powder 5g；After mixing, green body is pressed at 800MPa；Under vacuum protection, 1200 are heated to the heating rate of 50 DEG C/min
DEG C, 3h is kept the temperature, obtains Ag-1% (V after cooling0.5,Cr0.5)3C2Contact material.Density 8.663g/cm3, hardness HV68, resistance
Rate 33 × 10-3μΩ·m。
Claims (9)
1. a kind of Ag-MXene contact material, which is characterized in that in the contact material, Ag accounts for the quality hundred of the contact material
Dividing than being the mass percent that 50~99%, MXene accounts for the contact material is 1~50%；
The MXene includes following components: Ti3C2、Ti2C、Ta4C3、Ti3CN、Nb2C、V2C、Nb4C3、(Ti0.5,Nb0.5)2C or
(V0.5,Cr0.5)3C2。
2. a kind of preparation method of Ag-MXene contact material as described in claim 1, which is characterized in that the preparation method packet
Include following steps:
Step S1: ratio by mass percentage weighs Ag powder and MXene powder；
Step S2: the Ag-MXene powder in step S1 is sufficiently mixed, be uniformly mixed powder；
Step S3: mixed powder obtained in step S2 is placed in mold and is pressed into green body；
Step S4: green body obtained in step S3 is placed in sintering furnace, under inert atmosphere or vacuum protection, with the liter of setting
Warm rate is heated to treatment temperature and keeps the temperature, and the contact material can be obtained.
3. the preparation method of Ag-MXene contact material according to claim 2, which is characterized in that described in step S1
The partial size of Ag powder is 1~100 μm, and the MXene purity is greater than 90%, and partial size is 1~100 μm.
4. the preparation method of Ag-MXene contact material according to claim 2, which is characterized in that described in step S2
Powder, which is sufficiently mixed, refers to 5~25h of wet-mixing.
5. the preparation method of Ag-MXene contact material according to claim 2, which is characterized in that described in step S3
The pressure of compacting is 10~800MPa.
6. the preparation method of Ag-MXene contact material according to claim 2, which is characterized in that described in step S4
Inert atmosphere is Ar gas or nitrogen.
7. the preparation method of Ag-MXene contact material according to claim 2, which is characterized in that described in step S4
Heating rate be 1~50 DEG C/min.
8. the preparation method of Ag-MXene contact material according to claim 2, which is characterized in that described in step S4
Treatment temperature is 500~1200 DEG C；The soaking time is 0.5~5h.
9. a kind of purposes of Ag-MXene contact material as described in claim 1, which is characterized in that the contact material is applicable in
In contactor, relay, breaker low voltage switch equipment.
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| CN110628155B (en) * | 2019-09-27 | 2022-01-04 | 中国科学院深圳先进技术研究院 | MXene/metal composite aerogel, preparation method and application thereof, and thermal interface material comprising MXene/metal composite aerogel |
| WO2021172415A1 (en) * | 2020-02-26 | 2021-09-02 | Murata Manufacturing Co., Ltd. | Paste and conductive film and their production methods |
| CN116194236A (en) * | 2020-09-17 | 2023-05-30 | 株式会社村田制作所 | Electrode or wiring, electrode pair, and method for manufacturing electrode or wiring |
| CN113131307B (en) * | 2021-03-26 | 2023-01-24 | 上海联影医疗科技股份有限公司 | Slip ring carbon brush preparation method and slip ring carbon brush |
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| CN105624458A (en) * | 2016-02-29 | 2016-06-01 | 东南大学 | Preparation method for Ti3AlC2-strenghted Ag-based electrical contact material |
| CN105895385A (en) * | 2016-05-31 | 2016-08-24 | 陕西科技大学 | Titanium oxide columnar array/two-dimensional lamellar titanium carbide electrode material and preparation and application thereof |
| CN106119593A (en) * | 2016-08-05 | 2016-11-16 | 东南大学 | A kind of Ti2snC strengthens the preparation method of Ag base electric contact material |
| WO2017011044A2 (en) * | 2015-04-20 | 2017-01-19 | Drexel University | Two-dimensional, ordered, double transition metals carbides having a nominal unit cell composition m'2m"nxn+1 |
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| WO2017011044A2 (en) * | 2015-04-20 | 2017-01-19 | Drexel University | Two-dimensional, ordered, double transition metals carbides having a nominal unit cell composition m'2m"nxn+1 |
| CN105624458A (en) * | 2016-02-29 | 2016-06-01 | 东南大学 | Preparation method for Ti3AlC2-strenghted Ag-based electrical contact material |
| CN105895385A (en) * | 2016-05-31 | 2016-08-24 | 陕西科技大学 | Titanium oxide columnar array/two-dimensional lamellar titanium carbide electrode material and preparation and application thereof |
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