CN108559867A - A kind of high conductivity CuCr30 contact materials and preparation method thereof - Google Patents
A kind of high conductivity CuCr30 contact materials and preparation method thereof Download PDFInfo
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- CN108559867A CN108559867A CN201810463988.3A CN201810463988A CN108559867A CN 108559867 A CN108559867 A CN 108559867A CN 201810463988 A CN201810463988 A CN 201810463988A CN 108559867 A CN108559867 A CN 108559867A
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- 239000000463 material Substances 0.000 title claims abstract description 38
- 238000002360 preparation method Methods 0.000 title abstract description 13
- 239000000843 powder Substances 0.000 claims abstract description 68
- 238000005245 sintering Methods 0.000 claims abstract description 55
- 238000000034 method Methods 0.000 claims abstract description 36
- 239000000956 alloy Substances 0.000 claims abstract description 34
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 32
- 238000000498 ball milling Methods 0.000 claims abstract description 9
- 239000002994 raw material Substances 0.000 claims abstract description 9
- 238000010438 heat treatment Methods 0.000 claims description 15
- 238000002791 soaking Methods 0.000 claims description 13
- 238000013461 design Methods 0.000 claims description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 8
- 229910002804 graphite Inorganic materials 0.000 claims description 8
- 239000010439 graphite Substances 0.000 claims description 8
- 238000005070 sampling Methods 0.000 claims description 8
- 238000010792 warming Methods 0.000 claims description 8
- 238000005516 engineering process Methods 0.000 abstract description 4
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000003912 environmental pollution Methods 0.000 abstract description 2
- 238000007796 conventional method Methods 0.000 abstract 1
- 239000011812 mixed powder Substances 0.000 abstract 1
- 238000005498 polishing Methods 0.000 abstract 1
- 238000001291 vacuum drying Methods 0.000 abstract 1
- 238000002474 experimental method Methods 0.000 description 5
- 239000002131 composite material Substances 0.000 description 3
- 239000000470 constituent Substances 0.000 description 3
- 238000002844 melting Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000012071 phase Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000678 plasma activation Methods 0.000 description 1
- 238000004663 powder metallurgy Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 238000002490 spark plasma sintering Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C9/00—Alloys based on copper
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/10—Sintering only
- B22F3/105—Sintering only by using electric current other than for infrared radiant energy, laser radiation or plasma ; by ultrasonic bonding
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/04—Making non-ferrous alloys by powder metallurgy
- C22C1/0425—Copper-based alloys
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/02—Contacts characterised by the material thereof
- H01H1/021—Composite material
- H01H1/025—Composite material having copper as the basic material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/10—Sintering only
- B22F3/105—Sintering only by using electric current other than for infrared radiant energy, laser radiation or plasma ; by ultrasonic bonding
- B22F2003/1051—Sintering only by using electric current other than for infrared radiant energy, laser radiation or plasma ; by ultrasonic bonding by electric discharge
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
- B22F2998/10—Processes characterised by the sequence of their steps
Abstract
The invention discloses a kind of high conductivity CuCr30 contact materials and preparation method thereof, this method prepares CuCr alloy powder, wherein raw material powder Cu using mechanical attrition method：Cr in mass ratio 7:3 are placed in ball grinder, rotational speed of ball-mill 80r/min, and Ball-milling Time is 5 6h, alloy powder after vacuum drying carries out discharge plasma sintering, sintering pressure 40MPa, 800 950 DEG C of sintering temperature again, 5min is kept the temperature in maximum temperature, after sample is cooled to room temperature, finished product is slightly obtained after polishing.The beneficial effects of the invention are as follows：The present invention prepares CuCr30 mixed powder for alloy by mechanical attrition method and realizes CuCr30 alloy sinterings using discharge plasma sintering technology, can prepare high-densit, excellent mechanical performance CuCr alloys.Compared with the conventional method, this method also has the advantages that preparation process is convenient, saves energy consumption, reduces environmental pollution, function admirable.
Description
Technical field
The invention belongs to contact alloy field of material preparation, and in particular to a kind of high conductivity CuCr30 contact materials and
Preparation method.
Background technology
The stability of operation of power networks, safety are the significant problem to involve the interests of the state and the people, safety of the vacuum switch in power grid
Very important effect is played in operation.Vacuum switch be it is a kind of with breaker that vacuum environment be insulation and arc-extinguishing medium, bear
The general name of the device for switching such as lotus switch, contactor and disconnecting switch, the disjunction of electric current is realized using vacuum characteristic, is had and is divided
Cutting capacity is strong, reliability is high, simple in structure, small, light-weight, Environmental Safety, long lifespan, to be easy to maintenance etc. a series of
Advantage, therefore as industrial ideal switchgear of new generation.By the research of many decades, contact material is formd with CuCr
Based on, and continue to optimize the trend of technological parameter and composition design.Its advantage is derived from dissolving each other with very little between Cu and Cr
Degree.CuCr alloys are actually two phase alloys, to make Cu and Cr all be sufficiently reserved respective good performance, i.e.,:With relatively low
The Cu constituent elements of fusing point, high conductivity and thermal conductivity are conducive to the breaking capacity for improving vacuum switch；Cr constituent elements have higher molten
Point, mechanical strength and lower value of shutting off ensure that vacuum switch with good proof voltage, anti-scorching, anti-melting welding and low section
The characteristics such as stream.With it is traditional prepare the technique of composite material compared with, such as powder metallurgy process, vacuum induction melting method etc. are put
Electric plasma agglomeration (Spark Plasma Sintering, SPS) technique may be implemented to make material at relatively low temperature
Fast Sintering is molded, and the consistency of material is higher, thus has hardness high, conductive using composite material prepared by SPS techniques
The advantages that good with heat conductivility.SPS techniques have the conventional process that very big potentiality become CuCr alloy electrical contact materials.This examination
Test the shadow that CuCr alloy materials, Main Analysis sintering temperature and technique are prepared to microstructure of composite and performance using SPS techniques
It rings.
CuCr alloys are widely used in contact material due to its excellent electric conductivity and superior economy.The conduction of Cu
Rate is high, and electric property is good, and the hardness of Cr is high, and mechanical property is good, and what CuCr contact materials leaned on is solid solution extremely low between two elements
Degree, forms equally distributed two-phase pseudo-alloy, is effectively compounded with the superiority of the respective constituent element of Cu and Cr.It is high with possessing
Breaking capacity, lower shut off value and excellent fusion welding resisting ability, while there is high intensity and hardness, good conductive and heat-conductive
Many advantages, such as property.In recent years, as device for switching is to large capacity, the development in high voltage direction, it is desirable that contact material has more
High electric conductivity and mechanical property.
Invention content
To solve the above-mentioned problems, the object of the present invention is to provide a kind of preparation processes simply, reduces energy consumption, reduces environment
The high conductivity CuCr30 contact materials and preparation method thereof of the advantages of pollution, superior performance.
The technical scheme is that：A kind of high conductivity CuCr30 contact materials, each component of the contact material
Mass percent is：Cu powder 70%wt and Cr powder 30%wt.
Further, the grain size of the Cu powder is not less than -300 mesh, and the grain size of Cr powder is not less than -300 mesh.
It is a further object of the present invention to provide a kind of methods preparing above-mentioned contact material, and this method specifically includes following
Step：
Step 1：It uses Cu powder (- 300 mesh), Cr powder (- 300 mesh) as raw material, design proportion mass fraction is：Cu
70%, Cr 30%.It weighs powder to be fitted into ball grinder, with certain rotating speed ball milling 2.5-3.5h on planetary ball mill, make
Cu powder and the alloy powder of addition are uniformly mixed, and obtain alloy powder；
Step 2：The alloyed powder that step 1 obtains is placed in the graphite jig of a diameter of 10mm, is put into SPS furnace chambers, into
Row sintering；
Step 3：It is then cooled to room temperature, takes out mold, sampling polishes sample surfaces to get to CuCr30 contact materials
Material.
Further, the consistency for obtaining CuCr30 contact materials is not less than not less than 95.6% with conductivity
32.11%.
Further, the sintering process in the step 2 is：First vacuumize, after vacuum degree reaches 0.1MPa, with 100 DEG C/
The heating rate of min is warming up to sintering temperature, soaking time 5min, sintering pressure 40MPa.
Further, the sintering temperature is 800-950 DEG C.
The beneficial effects of the invention are as follows：Due to the adoption of the above technical scheme, the present invention is sintered using discharge plasma
(SPS) technology is to make to be sintered each particle in internal portion by the plasma discharging instantaneously generated equably to generate heat and particle table
Face activates, thus has the characteristics that the very high thermal efficiency and make to be sintered body within the extremely short time to reach densification.Electric discharge
Plasma sintering technique combination plasma activation, hot pressing, resistance heating are integrated, thus the fast, sintering time with heating rate
Short, homogeneous grain size is conducive to control the fine structure of sintered body, the advantages that material density of acquisition is high, performance is good.Profit
With technology sintering CuCr alloy powder material, it can be achieved that the preparation of the CuCr alloy materials high-quality and efficient, low consumption is inexpensive
Journey.Preparation process is simple, reduces energy consumption, reduces environmental pollution, superior performance.
Specific implementation mode
Technical scheme of the present invention is described further below by specific embodiment.
A kind of high conductivity CuCr30 contact materials of the present invention, the mass percent of each component of the contact material are：
Cu powder 70%wt and Cr powder 30%wt.
Further, the grain size of the Cu powder is not less than -300 mesh, and the grain size of Cr powder is not less than -300 mesh.
It is a further object of the present invention to provide a kind of methods preparing above-mentioned contact material, and this method specifically includes following
Step：
Step 1：It uses Cu powder (- 300 mesh), Cr powder (- 300 mesh) as raw material, design proportion mass fraction is：Cu
70%, Cr 30%.It weighs powder to be fitted into ball grinder, with certain rotating speed ball milling 2.5-3.5h on planetary ball mill, make
Cu powder and the alloy powder of addition are uniformly mixed, and obtain alloy powder；
Step 2：The alloyed powder that step 1 obtains is placed in the graphite jig of a diameter of 10mm, is put into SPS furnace chambers, into
Row sintering；
Step 3：It is then cooled to room temperature, takes out mold, sampling polishes sample surfaces to get to CuCr30 contact materials
Material.
Further, the consistency for obtaining CuCr30 contact materials is not less than not less than 95.6% with conductivity
32.11%.
Further, the sintering process in the step 2 is：First vacuumize, after vacuum degree reaches 0.1MPa, with 100 DEG C/
The heating rate of min is warming up to sintering temperature, soaking time 5min, sintering pressure 40MPa.
Further, the sintering temperature is 800-950 DEG C.
Embodiment 1
(1) use Cu powder (- 300 mesh), Cr powder (- 300 mesh) for raw material, design proportion mass fraction is：Cu 70%, Cr
30%.It weighs powder to be fitted into ball grinder, the ball milling 3h on planetary ball mill, so that Cu powder and the alloy powder of addition is mixed equal
It is even.
(2) CuCr30 alloyed powders are placed in the graphite jig of a diameter of 10mm, are put into SPS furnace chambers, first vacuumize, very
After reciprocal of duty cycle reaches 0.1MPa, sintering temperature, soaking time 5min, sintering pressure are warming up to the heating rate of 100 DEG C/min
For 40MPa, temperature is controlled using the variation of electric current, CuCr30 alloys are prepared according to the technique sintering needed for experiment.Sintering temperature
Degree is respectively set to 800 DEG C, soaking time 5min, sintering pressure 40MPa, and heating rate is 100 DEG C/min.
(3) it is then cooled to room temperature, takes out mold, sampling polishes sample surfaces to get to CuCr30 contact materials.
Embodiment 2
(1) use Cu powder (- 300 mesh), Cr powder (- 300 mesh) for raw material, design proportion mass fraction is：Cu 70%, Cr
30%.It weighs powder to be fitted into ball grinder, the ball milling 3h on planetary ball mill, so that Cu powder and the alloy powder of addition is mixed equal
It is even.
(2) CuCr30 alloyed powders are placed in the graphite jig of a diameter of 10mm, are put into SPS furnace chambers, first vacuumize, very
After reciprocal of duty cycle reaches 0.1MPa, sintering temperature, soaking time 5min, sintering pressure are warming up to the heating rate of 100 DEG C/min
For 40MPa, temperature is controlled using the variation of electric current, CuCr30 alloys are prepared according to the technique sintering needed for experiment.Sintering temperature
Degree is respectively set to 850 DEG C, soaking time 5min, sintering pressure 40MPa, and heating rate is 100 DEG C/min.
(3) it is then cooled to room temperature, takes out mold, sampling polishes sample surfaces to get to CuCr30 contact materials.
Embodiment 3
(1) use Cu powder (- 300 mesh), Cr powder (- 300 mesh) for raw material, design proportion mass fraction is：Cu 70%, Cr
30%.It weighs powder to be fitted into ball grinder, the ball milling 3h on planetary ball mill, so that Cu powder and the alloy powder of addition is mixed equal
It is even.
(2) CuCr30 alloyed powders are placed in the graphite jig of a diameter of 10mm, are put into SPS furnace chambers, first vacuumize, very
After reciprocal of duty cycle reaches 0.1MPa, sintering temperature, soaking time 5min, sintering pressure are warming up to the heating rate of 100 DEG C/min
For 40MPa, temperature is controlled using the variation of electric current, CuCr30 alloys are prepared according to the technique sintering needed for experiment.Sintering temperature
Degree is respectively set to 880 DEG C, soaking time 5min, sintering pressure 40MPa, and heating rate is 100 DEG C/min.
(3) it is then cooled to room temperature, takes out mold, sampling polishes sample surfaces to get to CuCr30 contact materials.
Embodiment 4
(1) use Cu powder (- 300 mesh), Cr powder (- 300 mesh) for raw material, design proportion mass fraction is：Cu 70%, Cr
30%.It weighs powder to be fitted into ball grinder, the ball milling 3h on planetary ball mill, so that Cu powder and the alloy powder of addition is mixed equal
It is even.
(2) CuCr30 alloyed powders are placed in the graphite jig of a diameter of 10mm, are put into SPS furnace chambers, first vacuumize, very
After reciprocal of duty cycle reaches 0.1MPa, sintering temperature, soaking time 5min, sintering pressure are warming up to the heating rate of 100 DEG C/min
For 40MPa, temperature is controlled using the variation of electric current, CuCr30 alloys are prepared according to the technique sintering needed for experiment.Sintering temperature
Degree is respectively set to 900 DEG C, soaking time 5min, sintering pressure 40MPa, and heating rate is 100 DEG C/min.
(3) it is then cooled to room temperature, takes out mold, sampling polishes sample surfaces to get to CuCr30 contact materials.
Embodiment 5
(1) use Cu powder (- 300 mesh), Cr powder (- 300 mesh) for raw material, design proportion mass fraction is：Cu 70%, Cr
30%.It weighs powder to be fitted into ball grinder, the ball milling 3h on planetary ball mill, so that Cu powder and the alloy powder of addition is mixed equal
It is even.
(2) CuCr30 alloyed powders are placed in the graphite jig of a diameter of 10mm, are put into SPS furnace chambers, first vacuumize, very
After reciprocal of duty cycle reaches 0.1MPa, sintering temperature, soaking time 5min, sintering pressure are warming up to the heating rate of 100 DEG C/min
For 40MPa, temperature is controlled using the variation of electric current, CuCr30 alloys are prepared according to the technique sintering needed for experiment.Sintering temperature
Degree is respectively set to 950 DEG C, soaking time 5min, sintering pressure 40MPa, and heating rate is 100 DEG C/min.
(3) it is then cooled to room temperature, takes out mold, sampling polishes sample surfaces to get to CuCr30 contact materials.
With resistance instrument measured resistivity and then it is converted into conductivity, consistency is measured with drainage.Data result is shown in Table 1.
Table 1：The consistency and conductivity of different sintering temperature CuCr30 alloys
| Sintering temperature/DEG C | 800 | 850 | 880 | 900 | 950` |
| Consistency/% | 95.6 | 97.8 | 99.0 | 98.0 | 97.7 |
| Conductivity/MS/m | 35.87 | 36.25 | 38.70 | 32.11 | 33.87 |
It can be seen from Table 1 that with the raising of sintering temperature, the consistency and conductivity of alloy are all to present first to rise
High then downward trend.When sintering temperature is 880 DEG C, the consistency and conductivity of CuCr30 alloys are best, difference
99% and 38.7MS/m are reached.
Table 2：The performance of Different Preparation CuCr30 alloys
| SPS is sintered | Powder solid-phase sintering | Smelting process | Infiltration in vacuum method | |
| Consistency/% | 99.0 | 97.2 | 99.0 | 99.0% |
| Conductivity/MS/m | 38.70 | 32.4 | 29.3 | 20 |
It can be seen from Table 2 that the CuCr30 consistency prepared by SPS techniques can reach the water of other methods preparation
It is flat, while conductivity is considerably beyond the preparation process of other methods.
Claims (6)
1. a kind of high conductivity CuCr30 contact materials, which is characterized in that the mass percent of each component of the contact material
For：Cu powder 70%wt and Cr powder 30%wt.
2. contact material according to claim 1, which is characterized in that the grain size of the Cu powder is not less than -300 mesh, Cr
The grain size of powder is not less than -300 mesh.
3. a kind of method preparing contact material as claimed in claim 1 or 2, which is characterized in that this method specifically include with
Lower step：
Step 1：It is raw material for the Cr powder that the equal grain size of Cu powder peaces of -300 mesh is -300 mesh to use average grain diameter, design
Ratio mass fraction is：Cu 70%, Cr 30% weighs powder and is fitted into ball grinder, is turned with certain on planetary ball mill
Fast ball milling 2.5-3.5 h make Cu powder and the alloy powder of addition be uniformly mixed, obtain alloy powder；
Step 2：The alloyed powder that step 1 obtains is placed in the graphite jig of a diameter of 10 mm, is put into SPS furnace chambers, carried out
Sintering；
Step 3：It is then cooled to room temperature, takes out mold, sampling polishes sample surfaces to get to CuCr30 contact materials.
4. according to the method described in claim 3, it is characterized in that, the consistency for obtaining CuCr30 contact materials is not less than
95.6% and conductivity be not less than 32.11%.
5. according to the method described in claim 3, it is characterized in that, the sintering process in the step 2 is：It first vacuumizes, very
After reciprocal of duty cycle reaches 0.1MPa, sintering temperature, soaking time 5min, sintering pressure are warming up to the heating rate of 100 DEG C/min
For 40MPa.
6. according to the method described in claim 5, it is characterized in that, the sintering temperature is 800-950 DEG C.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810463988.3A CN108559867A (en) | 2018-05-15 | 2018-05-15 | A kind of high conductivity CuCr30 contact materials and preparation method thereof |
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| CN201810463988.3A CN108559867A (en) | 2018-05-15 | 2018-05-15 | A kind of high conductivity CuCr30 contact materials and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110468300A (en) * | 2019-07-29 | 2019-11-19 | 西安斯瑞先进铜合金科技有限公司 | A kind of preparation method of high-performance CuCr electrical contact |
| CN111487097A (en) * | 2020-03-24 | 2020-08-04 | 上海材料研究所 | Method for preparing high-performance blocky standard sample blank by using powder as raw material |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105945293A (en) * | 2016-04-26 | 2016-09-21 | 武汉大学 | High-hardness high-conductivity CuCr25 contact material and preparation method and application thereof |
| CN106086493A (en) * | 2016-08-18 | 2016-11-09 | 江西理工大学 | A kind of fast low temperature sinters the method preparing CuCr alloy material |
| US20160325354A1 (en) * | 2015-05-07 | 2016-11-10 | Thermal Technology, Llc | Compressive Sintering Apparatus Comprising Protected Opposing Rams |
| CN106498205A (en) * | 2016-12-13 | 2017-03-15 | 合肥工业大学 | A kind of manufacture method of the CuCr alloys of large scale high-compactness high uniformity |
-
2018
- 2018-05-15 CN CN201810463988.3A patent/CN108559867A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160325354A1 (en) * | 2015-05-07 | 2016-11-10 | Thermal Technology, Llc | Compressive Sintering Apparatus Comprising Protected Opposing Rams |
| CN105945293A (en) * | 2016-04-26 | 2016-09-21 | 武汉大学 | High-hardness high-conductivity CuCr25 contact material and preparation method and application thereof |
| CN106086493A (en) * | 2016-08-18 | 2016-11-09 | 江西理工大学 | A kind of fast low temperature sinters the method preparing CuCr alloy material |
| CN106498205A (en) * | 2016-12-13 | 2017-03-15 | 合肥工业大学 | A kind of manufacture method of the CuCr alloys of large scale high-compactness high uniformity |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110468300A (en) * | 2019-07-29 | 2019-11-19 | 西安斯瑞先进铜合金科技有限公司 | A kind of preparation method of high-performance CuCr electrical contact |
| CN111487097A (en) * | 2020-03-24 | 2020-08-04 | 上海材料研究所 | Method for preparing high-performance blocky standard sample blank by using powder as raw material |
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Application publication date: 20180921 |