CN106086566A - A kind of chromio high temperature wear resistant alloy and preparation method thereof - Google Patents
A kind of chromio high temperature wear resistant alloy and preparation method thereof Download PDFInfo
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- CN106086566A CN106086566A CN201610443696.4A CN201610443696A CN106086566A CN 106086566 A CN106086566 A CN 106086566A CN 201610443696 A CN201610443696 A CN 201610443696A CN 106086566 A CN106086566 A CN 106086566A
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- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 45
- 239000000956 alloy Substances 0.000 title claims abstract description 45
- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- 239000003870 refractory metal Substances 0.000 claims abstract description 13
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 12
- 229910052758 niobium Inorganic materials 0.000 claims abstract description 11
- 229910052721 tungsten Inorganic materials 0.000 claims abstract description 11
- 229910052715 tantalum Inorganic materials 0.000 claims abstract description 10
- 238000005275 alloying Methods 0.000 claims abstract description 4
- 239000011159 matrix material Substances 0.000 claims abstract description 4
- 229910052751 metal Inorganic materials 0.000 claims abstract description 3
- 239000002184 metal Substances 0.000 claims abstract description 3
- 239000000843 powder Substances 0.000 claims description 26
- 238000005245 sintering Methods 0.000 claims description 23
- 239000000463 material Substances 0.000 claims description 18
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 17
- 229910002804 graphite Inorganic materials 0.000 claims description 17
- 239000010439 graphite Substances 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 13
- 238000000498 ball milling Methods 0.000 claims description 10
- 229910052802 copper Inorganic materials 0.000 claims description 7
- 230000014759 maintenance of location Effects 0.000 claims description 5
- 229910052804 chromium Inorganic materials 0.000 claims description 4
- 238000005516 engineering process Methods 0.000 claims description 4
- 239000011812 mixed powder Substances 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 2
- 230000006835 compression Effects 0.000 claims 1
- 238000007906 compression Methods 0.000 claims 1
- 239000010949 copper Substances 0.000 description 27
- 239000002131 composite material Substances 0.000 description 7
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 6
- 238000001816 cooling Methods 0.000 description 6
- 229910000765 intermetallic Inorganic materials 0.000 description 5
- 238000000280 densification Methods 0.000 description 4
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 4
- 229910052737 gold Inorganic materials 0.000 description 4
- 239000010931 gold Substances 0.000 description 4
- 238000000227 grinding Methods 0.000 description 4
- 229910001068 laves phase Inorganic materials 0.000 description 4
- JKQOBWVOAYFWKG-UHFFFAOYSA-N molybdenum trioxide Chemical compound O=[Mo](=O)=O JKQOBWVOAYFWKG-UHFFFAOYSA-N 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 230000003026 anti-oxygenic effect Effects 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 238000011068 loading method Methods 0.000 description 3
- 229910052759 nickel Inorganic materials 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- 238000002490 spark plasma sintering Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- ZNOKGRXACCSDPY-UHFFFAOYSA-N tungsten trioxide Chemical compound O=[W](=O)=O ZNOKGRXACCSDPY-UHFFFAOYSA-N 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 2
- LBJNMUFDOHXDFG-UHFFFAOYSA-N copper;hydrate Chemical compound O.[Cu].[Cu] LBJNMUFDOHXDFG-UHFFFAOYSA-N 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- 229910015667 MoO4 Inorganic materials 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 229910003310 Ni-Al Inorganic materials 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- HPNSNYBUADCFDR-UHFFFAOYSA-N chromafenozide Chemical compound CC1=CC(C)=CC(C(=O)N(NC(=O)C=2C(=C3CCCOC3=CC=2)C)C(C)(C)C)=C1 HPNSNYBUADCFDR-UHFFFAOYSA-N 0.000 description 1
- BERDEBHAJNAUOM-UHFFFAOYSA-N copper(I) oxide Inorganic materials [Cu]O[Cu] BERDEBHAJNAUOM-UHFFFAOYSA-N 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000009527 percussion Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 229910000601 superalloy Inorganic materials 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C27/00—Alloys based on rhenium or a refractory metal not mentioned in groups C22C14/00 or C22C16/00
- C22C27/06—Alloys based on chromium
-
- 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
- B22F3/1003—Use of special medium during sintering, e.g. sintering aid
- B22F3/1007—Atmosphere
-
- 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
- C22C1/045—Alloys based on refractory metals
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C30/00—Alloys containing less than 50% by weight of each constituent
- C22C30/02—Alloys containing less than 50% by weight of each constituent containing 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
- B22F2999/00—Aspects linked to processes or compositions used in powder metallurgy
Abstract
The invention discloses a kind of chromio high temperature wear resistant alloy, this alloy is with refractory metal Cr as matrix, with low-melting-point metal Cu and refractory metal Nb, Ta, W, Mo as alloying with intensified element；Wherein Cu element mass percent in the alloy is 5% 30%；Refractory metal Nb and Ta is a kind of, adds up to mass percent less than 10%；Refractory metal W and Mo is a kind of, adds up to mass percent less than 16%；Surplus is Cr.Alloy of the present invention has good mechanical property and wear resistance between 800 DEG C to 1100 DEG C, has relatively low coefficient of friction simultaneously, can be used for the high-temperature wearable parts of the high-tech sectors such as Aero-Space, nuclear power station and sophisticated weapons.Invention additionally discloses the preparation method of this alloy.
Description
Technical field
The present invention relates to a kind of chromio high temperature wear resistant alloy and preparation method thereof.
Background technology
High temperature alloy is widely used in the high-tech sectors such as Aero-Space, nuclear power station and sophisticated weapons.Use temperature is great
Affecting the various performances of alloy, at high temperature (about 1000 DEG C) have the alloy of excellent antiwear performance is high-tech sector weight
One of critical material that big equipment is reliable, stable and the long-life is run.In terms of high-temperature and wear-proof, the master of current wide coverage
If nickel-base composite material, intermetallic compound based composite material and ceramic matric composite.Chinese patent CN103540780B
Disclose the preparation method of a kind of high-strength nickel base high temperature self lubricating composite material, there is at room temperature to 900 DEG C low friction mill
Damage characteristic.Chinese patent CN103540821B discloses a kind of oxidation Zirconium-based block material at high temperature with self-lubricating property
Material.Chinese patent CN101463439B discloses intermetallic Ni-Al compound high temperature self-lubricating composite material, in wide temperature range scope
Inside there is relatively low coefficient of friction.Disclosed in United States Patent (USP) US5034187, PM200 series of high temperature self-lubricating composite can be with nickel
There is when cochrome rubs mutually relatively low coefficient of friction.NASA report PS304 self-lubricating coat in use from room temperature to 650 DEG C with
There is when nickel base superalloy rubs mutually relatively low coefficient of friction.These materials exist elevated temperature strength relatively low, use temperature range
Not, the problem such as wear resistance at elevated temperature deficiency and processing characteristics deficiency.Still lack in the environment of up to 1000 DEG C at present
The high-strength wear-resistant alloy used.
Summary of the invention
It is an object of the invention to provide a kind of chromio high temperature wear resistant alloy and preparation method thereof.
A kind of chromio high temperature wear resistant alloy, it is characterised in that this alloy is with refractory metal Cr as matrix, with low melting point gold
Belong to Cu and refractory metal Nb, Ta, W, Mo are alloying and intensified element；Wherein Cu element mass percent in the alloy is
5%-30%；Refractory metal Nb and Ta is a kind of, adds up to mass percent less than 10%；Refractory metal W and Mo at least one
Kind, add up to mass percent less than 16%；Surplus is Cr.
The preparation method of chromio high temperature wear resistant alloy as mentioned above, it is characterised in that use discharge plasma sintering technique
Prepared by (Spark Plasma Sintering is called for short SPS), comprise the following steps:
1) weigh Cr, Cu, Nb, Ta, W, Mo powder in high energy ball mill, to carry out ball milling obtain mixed-powder, be then loaded into
In graphite jig；
2) graphite jig is placed in discharge plasma sintering stove and carries out plasma activated sintering, cool to the furnace after having sintered
Room temperature obtains the chromio high temperature wear resistant alloy of block.
The purity of described Cr, Cu, Nb, Ta, W, Mo powder is more than 99%, and granularity is less than 0.076mm.
The Ball-milling Time of described step 1) is 3 ~ 6 hours, and ratio of grinding media to material is 3:1 ~ 8:1.
Described graphite jig material is high strength graphite, and compressive strength is more than 70MPa.
Described discharge plasma sintering process parameter is: vacuum be less than 10Pa, 50 DEG C/min ~ 250 DEG C of programming rate/
Min, sintering temperature is 1240 DEG C ~ 1540 DEG C, temperature retention time 3min ~ 15min, and moulding pressure is 5MPa ~ 35MPa, DC pulse
Than 12:2 ~ 12:10.
The design principle of chromio high temperature wear resistant alloy of the present invention is as follows:
1, Cr element has higher fusing point (1907 DEG C) and good antioxygenic property；Cu is when close to its fusing point (1084 DEG C)
Show characteristic and its oxides copper (Cu of soft metal2O) and Red copper oxide (CuO) has relatively low coefficient of friction,
Therefore there is the Cu element of relatively low melting point and can play the effect reducing coefficient of friction between 800 DEG C to 1100 DEG C, simultaneously copper and
Its oxide can reduce the phenomenon of sticking together between frictional interface, strengthens the anti stickness polishing machine of alloy；Refractory metal W's and Mo
Oxide Tungstic anhydride. (WO3) and molybdenum trioxide (MoO3) it is at high temperature good kollag, can play reduction friction is
The effect of number, the oxide of tungsten and molybdenum and the oxide of copper can form salts substances (Cu in friction process2WO4With
Cu2MoO4), this kind of material is at high temperature good kollag；These oxides and salts substances are in high temperature friction process
In can form continuous print composite solid lubricant film at friction surface, this film can make alloy have excellence wear resistance.
2, have between the 6 kinds of metallic elements forming alloy of the present invention and only form tool between Cr-Nb and Cr-Ta
There is the intermetallic compound NbCr of Laves phase2And TaCr2, there is not intermetallic compound between remaining element, in sintering process
In do not have new compound.Laves phase intermetallic compound has high fusing point and hardness, at high temperature has excellent
Mechanical behavior under high temperature and good antioxygenic property.The NbCr that alloy the most of the present invention produces at preparation process situ2
And TaCr2Dispersed precipitate plays dispersion-strengthened action in matrix Cr, enhances the antioxygenic property of alloy simultaneously.Height in alloy
The alloying element of fusing point and Laves phase intermetallic compound common guarantee alloy intensity at high temperature, and Laves phase exists
Remaining in that the highest hardness under high temperature, in alloy, the existence of these Hard Inclusion can improve alloy anti-abrasive wear at high temperature
Performance.
According to above-mentioned alloy design principle, the fusing point difference great disparity between each element of alloy, common hot-pressing sintering technique without
Method realizes densification sintering and the generation of Laves phase of alloy of the present invention.Discharge plasma sintering technique is to utilize on-off
High energy plasma and discharge impact pressure that formula DC pulse current produces between powder make material in relatively low temperature
A kind of new method of the lower quick shaping of degree.Due to this technology have plasma-activated powder particle surface, high-frequency percussion pressure,
The characteristics such as the coupling between Joule heat and electric field diffusion, the most this technology can be by raw material mixed powder of the present invention
End Fast Sintering becomes fine and close block materials, and can in-situ preparation dispersion-strengtherning phase NbCr in sintering process2And TaCr2。
Therefore the present invention uses discharge plasma sintering technique (SPS) to prepare chromio high temperature wear resistant alloy.
The invention has the beneficial effects as follows:
Alloy of the present invention remains to keep higher intensity between 800 DEG C to 1100 DEG C, alloy table the most at high temperature
Face oxide layer can form continuous print solid lubricant film in friction process, thus realizes wear resistance excellent under high temperature, with
Time there is relatively low coefficient of friction, compared with the same type of material of open report, have that use temperature is high and good processability etc. be excellent
Point.
Detailed description of the invention
Embodiment 1
A kind of chromio high temperature wear resistant alloy Cr70Nb4Ta4Mo8W2Cu12Preparation process is as follows:
1) Cr:Nb:Ta:Mo:W:Cu=70:4:4:8:2:12 in mass ratio weigh purity be 99%, granularity is less than the Cr of 0.076mm
Powder, purity is 99.5%, granularity is less than the Nb powder of 0.044mm, Ta powder, Mo powder and W powder and purity is 99%, granularity is less than
The Cu powder of 0.076mm；Weighing precision is 0.01 gram.Above-mentioned powder loading high energy ball mill is carried out ball milling, and Ball-milling Time is 4 little
Time, ratio of grinding media to material is 4:1.Then the powder mixed is loaded compressive strength to be more than in 70MPa graphite jig, graphite jig inner chamber
Diameter nominal size is 25mm.
2) graphite jig equipped with raw material described in step 1) is placed in discharge plasma sintering stove it is sintered, main work
Skill parameter is: vacuum is less than 10Pa, 100 DEG C/min of programming rate, and sintering temperature is 1400 DEG C, temperature retention time 5min, pressurization
Pressure is 20MPa, and DC pulse is than 12:2, and the type of cooling is furnace cooling.The chromio high temperature that can obtain densification after the demoulding is resistance to
Break-in gold Cr70Nb4Ta4Mo8W2Cu12。
The main performance of the alloy that the present embodiment 1 obtains is as shown in table 1.
Friction and wear test experiment condition is: load 5N, and friction linear velocity is 0.2m/s, and friction pair material is nitridation
Silicon, friction type is ball disc type.
Table 1 Cr70Nb4Ta4Mo8W2Cu12 Mechanical property and frictional behaviour
Embodiment 2
A kind of chromio high temperature wear resistant alloy Cr50Nb6W16Cu28Preparation process is as follows:
1) Cr:Nb:W:Cu=50:6:16:28 in mass ratio weigh purity be 99%, granularity less than the Cr powder of 0.076mm, purity is
99.5%, granularity less than the Nb powder of 0.044mm and W powder and purity be 99%, the granularity Cu powder less than 0.076mm；Weighing precision
It it is 0.01 gram.Above-mentioned powder loading high energy ball mill is carried out ball milling, and Ball-milling Time is 5 hours, and ratio of grinding media to material is 6:1.Then will
The powder mixed loads compressive strength and is more than in 70MPa graphite jig, and graphite jig intracavity diameter nominal size is 25mm.
2) graphite jig equipped with raw material described in step 1) is placed in discharge plasma sintering stove it is sintered, main work
Skill parameter is: vacuum is less than 10Pa, 100 DEG C/min of programming rate, and sintering temperature is 1350 DEG C, temperature retention time 8min, pressurization
Pressure is 25MPa, and DC pulse is than 12:6, and the type of cooling is furnace cooling.The chromio high temperature that can obtain densification after the demoulding is resistance to
Break-in gold Cr50Nb6W16Cu28。
The main performance of the alloy that the present embodiment 2 obtains is as shown in table 2.
Friction and wear test experiment condition is: load 5N, and friction linear velocity is 0.2m/s, and friction pair material is nitridation
Silicon, friction type is ball disc type.
Table 2 Cr50Nb6W16Cu28 Mechanical property and tribological property
Embodiment 3
A kind of chromio high temperature wear resistant alloy Cr65Nb6Mo10W4Cu15Preparation process is as follows:
1) Cr:Nb:Mo:W:Cu=65:6:10:4:15 in mass ratio weigh purity be 99%, granularity less than the Cr powder of 0.076mm,
Purity is 99.5%, granularity less than the Nb powder of 0.044mm and W powder and purity be 99%, the granularity Cu powder less than 0.076mm；Claim
Accuracy of measurement is 0.01 gram.Above-mentioned powder loading high energy ball mill is carried out ball milling, and Ball-milling Time is 6 hours, and ratio of grinding media to material is 5:1.
Then the powder mixed being loaded compressive strength to be more than in 70MPa graphite jig, graphite jig intracavity diameter nominal size is
25mm。
2) graphite jig equipped with raw material described in step 1) is placed in discharge plasma sintering stove it is sintered, main work
Skill parameter is: vacuum is less than 10Pa, 100 DEG C/min of programming rate, and sintering temperature is 1500 DEG C, temperature retention time 15min, pressurization
Pressure is 25MPa, and DC pulse is than 12:5, and the type of cooling is furnace cooling.The chromio high temperature that can obtain densification after the demoulding is resistance to
Break-in gold Cr65Nb6Mo10W4Cu15。
The main performance of the alloy that the present embodiment 3 obtains is as shown in table 3.
Friction and wear test experiment condition is: load 5N, and friction linear velocity is 0.2m/s, and friction pair material is nitridation
Silicon, friction type is ball disc type.
Table 3 Cr65Nb6Mo10W4Cu15 Mechanical property and tribological property
。
Claims (6)
1. a chromio high temperature wear resistant alloy, it is characterised in that this alloy is with refractory metal Cr as matrix, with low-melting-point metal
Cu and refractory metal Nb, Ta, W, Mo are alloying and intensified element；Wherein Cu element mass percent in the alloy is 5%-
30%；Refractory metal Nb and Ta is a kind of, adds up to mass percent less than 10%；Refractory metal W and Mo is a kind of,
Add up to mass percent less than 16%；Surplus is Cr.
2. the preparation method of chromio high temperature wear resistant alloy as claimed in claim 1, it is characterised in that use discharge plasma sintering
Prepared by technology, comprise the following steps:
1) weigh Cr, Cu, Nb, Ta, W, Mo powder in high energy ball mill, to carry out ball milling obtain mixed-powder, be then loaded into
In graphite jig；
2) graphite jig is placed in discharge plasma sintering stove and carries out plasma activated sintering, cool to the furnace after having sintered
Room temperature obtains the chromio high temperature wear resistant alloy of block.
3. preparation method as claimed in claim 2, it is characterised in that the purity of described Cr, Cu, Nb, Ta, W, Mo powder is more than
99%, granularity is less than 0.076mm.
4. preparation method as claimed in claim 2, it is characterised in that the Ball-milling Time of described step 1) is 3 ~ 6 hours, ball material
Ratio is 3:1 ~ 8:1.
5. preparation method as claimed in claim 2, it is characterised in that described graphite jig material is high strength graphite, and compression is strong
Degree is more than 70MPa.
6. preparation method as claimed in claim 2, it is characterised in that described discharge plasma sintering process parameter is: vacuum
Less than 10Pa, 50 DEG C/min ~ 250 DEG C of programming rate/min, sintering temperature is 1240 DEG C ~ 1540 DEG C, temperature retention time 3min ~
15min, moulding pressure is 5MPa ~ 35MPa, and DC pulse is than 12:2 ~ 12:10.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108517448A (en) * | 2018-05-08 | 2018-09-11 | 苏州国立塑料制品有限公司 | A kind of preparation method of electrical accessorie alloy material |
| CN108889954A (en) * | 2018-06-29 | 2018-11-27 | 中国科学院兰州化学物理研究所 | A kind of preparation method of infusibility high-entropy alloy powder |
| CN110983234A (en) * | 2019-12-25 | 2020-04-10 | 陕西科技大学 | NiAl-based bimetal oxide high-temperature lubricating wear-resistant composite coating and preparation method thereof |
| CN111607760A (en) * | 2019-11-13 | 2020-09-01 | 哈尔滨理工大学 | M50 steel pulse electron beam irradiation Nb-W-Cr-Mo alloying method |
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| CN102628114A (en) * | 2012-03-28 | 2012-08-08 | 东北大学 | Vacuum copper-based electrical contact composite material containing ceramic phase and preparation method of vacuum copper-based electrical contact composite material |
| CN105018815A (en) * | 2015-07-31 | 2015-11-04 | 陕西斯瑞工业有限责任公司 | High-Cr-content high-pressure-resistance copper-chromium contact material and manufacturing method thereof |
| CN105132726A (en) * | 2015-07-31 | 2015-12-09 | 陕西斯瑞工业有限责任公司 | Copper-chromium contact material suitable for contactor and preparing method of copper-chromium contact material |
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