CN1256450C - Silver-base electric contact head materials - Google Patents
Silver-base electric contact head materials Download PDFInfo
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- CN1256450C CN1256450C CN 03133585 CN03133585A CN1256450C CN 1256450 C CN1256450 C CN 1256450C CN 03133585 CN03133585 CN 03133585 CN 03133585 A CN03133585 A CN 03133585A CN 1256450 C CN1256450 C CN 1256450C
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- 239000000463 material Substances 0.000 title claims abstract description 52
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 119
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims abstract description 75
- 229910052709 silver Inorganic materials 0.000 claims abstract description 62
- 239000004332 silver Substances 0.000 claims abstract description 62
- 239000003575 carbonaceous material Substances 0.000 claims abstract description 36
- 229910021392 nanocarbon Inorganic materials 0.000 claims description 58
- 239000002041 carbon nanotube Substances 0.000 claims description 57
- 229910021393 carbon nanotube Inorganic materials 0.000 claims description 57
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 33
- 239000004917 carbon fiber Substances 0.000 claims description 33
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 32
- 239000000203 mixture Substances 0.000 claims description 17
- 239000002109 single walled nanotube Substances 0.000 claims description 15
- 239000000843 powder Substances 0.000 claims description 9
- 239000002245 particle Substances 0.000 claims description 2
- 229910002804 graphite Inorganic materials 0.000 abstract description 19
- 239000010439 graphite Substances 0.000 abstract description 19
- 238000005299 abrasion Methods 0.000 abstract description 8
- 230000003628 erosive effect Effects 0.000 abstract description 8
- 239000002131 composite material Substances 0.000 abstract description 5
- 238000010891 electric arc Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 23
- 238000002360 preparation method Methods 0.000 description 17
- 229910052799 carbon Inorganic materials 0.000 description 16
- 229920000642 polymer Polymers 0.000 description 16
- 239000004215 Carbon black (E152) Substances 0.000 description 15
- 229930195733 hydrocarbon Natural products 0.000 description 15
- 238000002156 mixing Methods 0.000 description 15
- 150000002430 hydrocarbons Chemical class 0.000 description 14
- 238000000354 decomposition reaction Methods 0.000 description 13
- 238000000498 ball milling Methods 0.000 description 11
- 238000004519 manufacturing process Methods 0.000 description 11
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 9
- 238000005096 rolling process Methods 0.000 description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 238000007731 hot pressing Methods 0.000 description 8
- 239000001257 hydrogen Substances 0.000 description 7
- 229910052739 hydrogen Inorganic materials 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 6
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- 229910052759 nickel Inorganic materials 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- 239000002079 double walled nanotube Substances 0.000 description 3
- 238000001192 hot extrusion Methods 0.000 description 3
- 230000008676 import Effects 0.000 description 3
- 239000000376 reactant Substances 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 239000002134 carbon nanofiber Substances 0.000 description 2
- 239000012159 carrier gas Substances 0.000 description 2
- 239000003610 charcoal Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 239000003085 diluting agent Substances 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000000713 high-energy ball milling Methods 0.000 description 2
- 150000002431 hydrogen Chemical class 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000005491 wire drawing Methods 0.000 description 2
- 229910001316 Ag alloy Inorganic materials 0.000 description 1
- 238000002679 ablation Methods 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 239000008204 material by function Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000002086 nanomaterial Substances 0.000 description 1
- 239000002105 nanoparticle Substances 0.000 description 1
- 125000002524 organometallic group Chemical group 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- -1 small molecules hydrocarbon Chemical class 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The present invention provides silver-base electric contact material with long service life, abrasion resistance and electric arc corrosive resistance. The present invention is characterized in that silver-base electric contact material is composed of 0.5 to 20 wt% of carbon material and silver as the rest. The present invention uses one-dimensional nanometer carbon material with current conducting performance and mechanical performance to partly or completely replace graphite to be added into a silver base and form one-dimensional nanometer carbon material /silver composite contact material. Compared with graphite silver contact head material, the new material guarantees high conductivity, high thermal conductivity, high strength and self-lubricating performance, simultaneously, greatly reduces the electrical erosion rate of material, and enhances the wear resistance of a contact. The present invention can completely replace the graphite silver contact head material.
Description
Technical field
The invention belongs to electric field of functional materials, replace or part replaces graphite in graphite/silver contact material with nano-sized carbon prepared materials such as CNT (carbon nano-tube), nano carbon fibers, this electrical contact material is that the money base with high abrasion characteristic and anti-arc erosion characteristic electrically contacts head material.
Background technology
The graphite silver alloys has obtained application more and more widely in recent years; content of graphite is that 3～10% the topmost characteristic of silver-colored graphite contact is high resistance fusion welding; low contact resistance; temperature rise is little; self-lubricating property etc. is arranged when using as slider; thereby be applicable to and do switch contact that the typical case uses at (GB12940-1991) such as low-voltage circuit breaker, reactance protection switch, line protection switch, earth leakage circuit-breaker and slip ring transmodulators.Silver graphite can use with silver-colored nickel pairing, is applied to mould shell omnipotent breaker, medium and small contactor, vernier switch etc.Simultaneously, silver-colored graphite alloy also is a kind of important military project contact material, is applied to radar set, follows the tracks of measuring and control device etc.But silver-colored graphite contact is using the existence electricity to ablate seriously the disadvantage that electric life is short.Carbon has the tendency of stable arc, aerial poor heat stability, cause the contact surface embrittlement during arcing, even cease spark cover carbon distribution (mainly occurring in the silver-colored graphite contact of high-content graphite type), the inefficacy of silver graphite contact generally is because a large amount of ablations of graphite cause contact surface the spongy structure of a kind of class to occur on the one hand, while and airborne oxygen reaction effusion CO gas, two aspect actings in conjunction cause more serious spillage of material in cut-offfing operation.
CNT (carbon nano-tube) is the newcomer of the early 1990s found carbon family, is one of forward position research direction in the nano material, is subjected to the extensive concern and the attention of countries in the world owing to CNT (carbon nano-tube) structure uniqueness, excellent performance.CNT (carbon nano-tube) comprises Single Walled Carbon Nanotube and multiple-wall carbon nanotube, and diameter is respectively 1～100 nanometer.Because CNT (carbon nano-tube) has the particular structure feature, big as structure, the length-to-diameter ratio of nanoscale, textural defect is few, specific surface area is big etc., this makes CNT (carbon nano-tube) show excellent mechanics, electricity and chemical property.Simultaneously, the characteristic that the nano carbon fiber of diameter between CNT (carbon nano-tube) and vapor-grown carbon fibers not only has vapor-grown carbon fibers and had, similar to CNT (carbon nano-tube) again at aspects such as structure, performance and application, the easier suitability for industrialized production of nano carbon fiber ratio nano carbon pipe and cheap particularly, have better application prospect (national patent ZL96115390.3 and ZL01248689.2), its application may be more extensive.We call nano carbon material in one dimension to CNT (carbon nano-tube) and nano carbon fiber.Along with improvement of nano carbon material in one dimension technology of preparing and output progressively increase, its Application Areas is constantly being widened.Matrix material is made as additive exactly in one of field that nano carbon material in one dimension is used, as a small amount of nano carbon material in one dimension being joined in the polymkeric substance such as polymer, resin, can obviously improve the electroconductibility of this material, as in macromolecular material, adding a certain amount of nano carbon material in one dimension (about 2%), can make the resistivity of macromolecular material generally reduce by 3 more than the order of magnitude, make it have anti-static function.Utilize the good mechanical property of nano carbon material in one dimension, for metal-base composites, as CNT (carbon nano-tube)/iron, CNT (carbon nano-tube)/aluminium, CNT (carbon nano-tube)/nickel, its wear resistance of CNT (carbon nano-tube)/carbon/carbon-copper composite material is far longer than elemental metals.Therefore, if the carbon prepared material that people such as CNT (carbon nano-tube), nano carbon fiber, Nano graphite powder can be found recently adds in the silver-based contact as additive, make the novel high-performance silver based contact material.At present, this Ag-based electrical contact material does not appear in the newspapers as yet.
Summary of the invention
In order to improve the performance of silver contact, the object of the present invention is to provide a kind ofly to electrically contact head material based on money base nano carbon material in one dimension/silver, that have high abrasion characteristic and anti-arc erosion characteristic.
To achieve these goals, technical solution of the present invention is:
Employing has 0.5～20wt% carbonaceous material, all the other compositions are the silver-based electric contact material of silver, wherein said carbonaceous material comprises CNT (carbon nano-tube), nano carbon fiber, Nano graphite powder or bortz powder, the mixture that also comprises these carbonaceous materials, and the mixture of they and common graphite powder, the granularity of surplus silver can be from 10nm～500 μ m; CNT (carbon nano-tube) comprises Single Walled Carbon Nanotube and/or multiple-wall carbon nanotube, and its diameter range is at 1～100nm, and the diameter range of nano carbon fiber is at 100～500nm, and the Nano graphite powder particle diameter is from 10～500nm.
The present invention proposes to develop a kind of novel silver-based electric contact material with high abrasion characteristic and anti-arc erosion characteristic.By changing the charcoal constituent element structure of adding, add the money base composite head material that obtains in the silver to nano carbon material in one dimension such as CNT (carbon nano-tube), obtain having the Ag-based electrical contact material of excellent properties.
The present invention has following beneficial effect:
1. excellent performance.The present invention is based on nano carbon material in one dimension/silver (CNT (carbon nano-tube), nano carbon fiber, Nano graphite powder and/or bortz powder, the mixture that also comprises these carbonaceous materials, and the mixture of they and common graphite powder adds the money base composite head material that obtains in the silver to) reach the purpose of raising silver/charcoal contact performance, be in particular in its high abrasion characteristic and anti-arc erosion characteristic height; Compare with the graphite silver contact material, the present invention is guaranteeing high conductivity, high thermal conductivity, in the time of high strength and self-lubricating property, can reduce the electroerosion rate of material and the abrasion resistance properties of raising contact significantly, can replace silver-colored graphite contact material fully.
2. have the long lifetime characteristics.Because mechanical wear speed reduces, anti-arc erosion performance improves, contact has the longer life-span.
Description of drawings
Fig. 1 electrically contacts head material preparation process synoptic diagram for the money base of high abrasion characteristic of the present invention and anti-arc erosion characteristic.
Fig. 2 obtains nano carbon fiber/silver contact material microstructure for the embodiment of the invention 8.
Method below adopting respectively such as the Single Walled Carbon Nanotube among the embodiment, multiple-wall carbon nanotube and nano carbon fiber obtains, and wherein gas-phase decomposition hydrocarbon polymer method prepares the Single Walled Carbon Nanotube process and is:
Carbon source is low-melting water molecules hydrocarbon polymer, and carbonatoms is less than 10; Diluent gas is hydrogen, argon gas, nitrogen, and the mol ratio of carbon source and diluent gas is in 0.5～5 scope; Catalyzer is the organometallics of iron, platinum, nickel, the mol ratio 1/20～1/10 of catalyzer and carbon source; When catalyzer is iron, cobalt time-like, the temperature that imports carbon source is 400～500 ℃, and to 1050～1250 ℃ of end reaction temperature, used temperature rise rate is 20～30 ℃/min, is incubated 0.5～2 hour; When catalyzer was nickel, the temperature that imports carbon source was 250～350 ℃, and to 600～800 ℃ of end reaction temperature, used temperature rise rate is 20～30 ℃/min, is incubated 0.5～2 hour.
The single-wall carbon nanotube prepared by hydrogen arc process process is:
Adopt the preparation of hydrogen arc process to have macro length (centimetre-sized) rope pencil Single Walled Carbon Nanotube: 5 circular holes to be arranged as anodic graphite disk surface working, each fills reactant 2.0g, described reactant contains mixed uniformly 2.6at%Ni, 0.7at%Fe, 0.7at%Co, 0.75at%FeS, and all the other are Graphite Powder 99.φ 10mm graphite rod is as negative electrode.Charge into 200 torr hydrogen in the reactor, striking current is the 150A direct current, keeps the distance of 2mm between two electrodes, 3 minutes each hole reaction times, change the reaction indoor gas afterwards, and the rotating anode disk evaporates the reactant in the next hole.Total reaction time 30 minutes.
Gas-phase decomposition hydrocarbon polymer method prepares multiple-wall carbon nanotube and nano carbon fiber process process is:
Carbon source and catalyzer be thorough mixing under gaseous state, at the uniform velocity imports reaction zone, and angle is 0～60 ° of variation between reaction zone and sea line, and wherein carbon source is a low melting point small molecules hydrocarbon polymer, is 4 * 10 for amount
-4～1.2 * 10
-3Gram equivalent carbon/centimetre
2Minute, carrier gas and carrier gas are hydrogen, and helium or nitrogen are 10～35 cm per minute for amount, and catalyzer is Fe, is 3 * 10 for amount
-7～2.5 * 10
-6The gram equivalent catalyzer/hour.
Embodiment
Below in conjunction with drawings and Examples the present invention is described in further detail.
Embodiment 1
As shown in Figure 1, the preparation process of nano carbon material in one dimension/Ag-based electrical contact is:
With the Ag powder of described ratio and second (CNT (carbon nano-tube), nano carbon fiber, Nano graphite powder or bortz powder) mutually, also comprise the mixture of these carbonaceous materials, and the mixture of they and common graphite powder, mix (ball milling 1～10 hour; Present embodiment is 5 hours) cold pressing respectively (under the 1000MPa pressure), sintering (300～600 ℃ are incubated 1～10 hour; Present embodiment is 500 ℃, is incubated 5 hours) and the following process densification (300～600 ℃, 800MPa repeats hot pressing many times; Present embodiment is with 300 ℃, 500 ℃, 600 ℃ 3 hot pressing), the money base that obtains having high abrasion characteristic and anti-arc erosion characteristic electrically contacts head material, and the basic parameter of the contact material that obtains is density 8.0～9.0g/cm
3, Rockwell hardness 110～130, specific conductivity 30～50m/ Ω mm of test contact
2
Gas-phase decomposition hydrocarbon polymer method is made multiple-wall carbon nanotube to be added in the silver-based contact as a kind of interpolation.Silver powder, 5wt% multiple-wall carbon nanotube (mean diameter is 10nm) uniform mixing with 95wt%, utilize the preparation process of present embodiment nano carbon material in one dimension/Ag-based electrical contact, mix through ball milling, coldmoulding, sinter base into, operations such as multiple pressure are prepared multiple-wall carbon nanotube/silver electric contact material.
Embodiment 2
Just gas-phase decomposition hydrocarbon polymer method makes multiple-wall carbon nanotube and is added in the silver-based contact as a kind of interpolation.Silver powder, 5wt% multiple-wall carbon nanotube (mean diameter is 40nm) uniform mixing with 95wt%, utilize the preparation process of embodiment 1 nano carbon material in one dimension/Ag-based electrical contact, through mixing, coldmoulding, sinter base into, hot extrusion, rolling, etc. multiple-wall carbon nanotube/silver electric contact material of preparing of conventional silver contact production process.
Embodiment 3
Gas-phase decomposition hydrocarbon polymer method is made Single Walled Carbon Nanotube to be added in the silver-based contact as a kind of interpolation.Silver powder, 1wt% Single Walled Carbon Nanotube uniform mixing with 99wt%, utilize the preparation process of embodiment 1 nano carbon material in one dimension/Ag-based electrical contact, mix coldmoulding through ball milling, sinter base into, Single Walled Carbon Nanotube/silver electric contact material that operations such as multiple pressure are prepared.
Embodiment 4
Single-wall carbon nanotube prepared by hydrogen arc process is got Single Walled Carbon Nanotube to be added in the silver-based contact as a kind of interpolation.Silver powder, 1wt% Single Walled Carbon Nanotube uniform mixing with 99wt%, utilize the preparation process of embodiment 1 nano carbon material in one dimension/Ag-based electrical contact, mix through ball milling, coldmoulding, sinter base into, Single Walled Carbon Nanotube/silver electric contact material that hot extrusion, conventional silver contact production process such as rolling are prepared.
Embodiment 5
Just the double-wall carbon nano-tube of hydrogen arc process preparation is added in the silver-based contact as a kind of interpolation.Silver powder, 1wt% double-wall carbon nano-tube uniform mixing with 99wt%, utilize the preparation process of embodiment 1 nano carbon material in one dimension/Ag-based electrical contact, through high-energy ball milling, coldmoulding, sinter base into, double-wall carbon nano-tube/silver electric contact material that operations such as multiple pressure are prepared.
Embodiment 6
Gas-phase decomposition hydrocarbon polymer method is made multiple-wall carbon nanotube (mean diameter is 50nm) and Nano graphite powder (median size 40nm) is added in the silver-based contact as a kind of compound interpolation.Silver powder, 5wt% multiple-wall carbon nanotube/Nano graphite powder uniform mixing with 95wt%, utilize the preparation process of embodiment 1 nano carbon material in one dimension/Ag-based electrical contact, through ball milling, coldmoulding, sinter base into, multiple-wall carbon nanotube-Nano graphite powder/silver electric contact material that hot extrusion, conventional silver contact production process such as rolling are prepared.
Embodiment 7
Gas-phase decomposition hydrocarbon polymer method is made multiple-wall carbon nanotube (mean diameter is 50nm) and bortz powder is added in the silver-based contact as a kind of compound interpolation.Silver powder, 5wt% multiple-wall carbon nanotube/bortz powder uniform mixing with 95wt%, utilize the preparation process of embodiment 1 nano carbon material in one dimension/Ag-based electrical contact, through ball milling, coldmoulding, sinter base into, multiple-wall carbon nanotube-bortz powder/silver electric contact material that hot pressing, conventional silver contact production process such as rolling are prepared.
Embodiment 8
Gas-phase decomposition hydrocarbon polymer method is made nano carbon fiber to be added in the silver-based contact as a kind of interpolation.Silver powder, 5wt% nano carbon fiber (mean diameter is 300nm) uniform mixing with 95wt%, utilize the preparation process of embodiment 1 nano carbon material in one dimension/Ag-based electrical contact, through ball milling, coldmoulding, sinter base into, nano carbon fiber/silver electric contact material that hot pressing, conventional silver contact production process such as rolling are prepared.Its result is referring to Fig. 2.
Embodiment 9
Gas-phase decomposition hydrocarbon polymer method is made nano carbon fiber to be added in the silver-based contact as a kind of interpolation.Silver powder, 5wt% nano carbon fiber (mean diameter is 500nm) uniform mixing with 95wt%, utilize the preparation process of embodiment 1 nano carbon material in one dimension/Ag-based electrical contact, through ball milling, coldmoulding, sinter base into, nano carbon fiber/silver electric contact material that hot pressing, conventional silver contact production process such as rolling are prepared.
Embodiment 10
Gas-phase decomposition hydrocarbon polymer method is made nano carbon fiber to be added in the silver-based contact as a kind of interpolation.Silver powder, 10wt% nano carbon fiber (mean diameter is 100nm) uniform mixing with 90wt%, utilize the preparation process of embodiment 1 nano carbon material in one dimension/Ag-based electrical contact, through ball milling, coldmoulding, sinter base into, nano carbon fiber/silver electric contact material that hot pressing, conventional silver contact production process such as rolling are prepared.
Embodiment 11
Gas-phase decomposition hydrocarbon polymer method is made nano carbon fiber to be added in the silver-based contact as a kind of interpolation.Silver powder, 1wt% nano carbon fiber (mean diameter is 300nm) uniform mixing with 99wt%, utilize the preparation process of embodiment 1 nano carbon material in one dimension/Ag-based electrical contact, through high-energy ball milling, coldmoulding, sinter base into, nano carbon fiber/silver electric contact material that the conventional silver contact production process of multiple pressure or the like is prepared.
Embodiment 12
Gas-phase decomposition hydrocarbon polymer method is made nano carbon fiber (mean diameter is 100nm) and general goods Graphite Powder 99 (its nano carbon fiber/Graphite Powder 99 weight ratio is 1: 1) is added in the silver-based contact as a kind of interpolation.Silver powder, 10wt% nano carbon fiber/Graphite Powder 99 mixture uniform mixing with 90wt%, utilize the preparation process of embodiment 1 nano carbon material in one dimension/Ag-based electrical contact, through ball milling, coldmoulding, sinter base into, nano carbon fiber-graphite/silver electric contact material that conventional silver contact production process such as hot pressing, rolling, wire drawing is prepared.
Embodiment 13
Gas-phase decomposition hydrocarbon polymer method is made nano carbon fiber (mean diameter is 300nm) and general goods Graphite Powder 99 (its nano carbon fiber/Graphite Powder 99 weight ratio is 3: 1) is added in the silver-based contact as a kind of interpolation.Silver powder, 10wt% nano carbon fiber/Graphite Powder 99 mixture uniform mixing with 90wt%, utilize the preparation process of embodiment 1 nano carbon material in one dimension/Ag-based electrical contact, through ball milling, coldmoulding, sinter base into, nano carbon fiber graphite/silver electric contact material that conventional silver contact production process such as hot pressing, rolling, wire drawing is prepared.
The present invention can also adopt Nano graphite powder or bortz powder, and (mixture that comprises the mixture of these carbonaceous materials and they and Graphite Powder 99) is carbonaceous material, and wherein said CNT (carbon nano-tube) can be the combination of Single Walled Carbon Nanotube and multiple-wall carbon nanotube.
Claims (4)
1. a silver-based electric contact material is characterized in that consisting of of this material: have 0.5～20wt% carbonaceous material, the silver of surplus; Described carbonaceous material is Single Walled Carbon Nanotube and/or multiple-wall carbon nanotube, and its diameter range is 1～100nm; Perhaps, described carbonaceous material is the mixture of the mixture of at least two kinds of CNT (carbon nano-tube), nano carbon fiber, Nano graphite powder or bortz powders and they and Graphite Powder 99.
2. according to the described silver-based electric contact material of claim 1, it is characterized in that: the granularity of described surplus silver is from 10nm～500 μ m.
3. according to the described silver-based electric contact material of claim 1, it is characterized in that: wherein said nano carbon fiber diameter range is 100～500nm.
4, according to the described silver-based electric contact material of claim 1, it is characterized in that: wherein said Nano graphite powder particle size range is 10～500nm.
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| CN 03133585 CN1256450C (en) | 2003-06-04 | 2003-06-04 | Silver-base electric contact head materials |
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| CN 03133585 CN1256450C (en) | 2003-06-04 | 2003-06-04 | Silver-base electric contact head materials |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP2413337A4 (en) * | 2009-03-24 | 2014-08-20 | Almt Corp | Electrical contact material |
| CN103421970B (en) * | 2012-03-30 | 2017-11-17 | 施耐德电器工业公司 | A kind of preparation method of silver-based electric contact material |
| CN104741616B (en) * | 2013-12-31 | 2017-05-17 | 施耐德电器工业公司 | electric contact material and preparation method thereof |
| CN106834783A (en) * | 2017-02-17 | 2017-06-13 | 昆明贵金属研究所 | A kind of Ti2AlN CNT composite strengthening silver-based electric contact materials and preparation method thereof |
| CN107254598A (en) * | 2017-05-10 | 2017-10-17 | 昆明贵金属研究所 | A kind of preparation method of silver-colored MAX phases sliding contact material |
| CN108300889A (en) * | 2017-12-20 | 2018-07-20 | 柳州智臻智能机械有限公司 | A kind of electrical contact material and preparation method thereof |
| CN112779436A (en) * | 2020-12-23 | 2021-05-11 | 佛山市诺普材料科技有限公司 | AgNi electrical contact material and preparation method thereof |
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