CN109128194A - A kind of preparation method of Cu-W bimetallic stratified material - Google Patents
A kind of preparation method of Cu-W bimetallic stratified material Download PDFInfo
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- CN109128194A CN109128194A CN201810934625.3A CN201810934625A CN109128194A CN 109128194 A CN109128194 A CN 109128194A CN 201810934625 A CN201810934625 A CN 201810934625A CN 109128194 A CN109128194 A CN 109128194A
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- tungsten
- bimetallic
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- casing play
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- 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
- B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
- B22F7/02—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite layers
- B22F7/04—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite layers with one or more layers not made from powder, e.g. made from solid metal
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- 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
- B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
- B22F7/02—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite layers
- B22F7/04—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite layers with one or more layers not made from powder, e.g. made from solid metal
- B22F2007/042—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite layers with one or more layers not made from powder, e.g. made from solid metal characterised by the layer forming method
- B22F2007/045—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite layers with one or more layers not made from powder, e.g. made from solid metal characterised by the layer forming method accompanied by fusion or impregnation
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- Composite Materials (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Powder Metallurgy (AREA)
Abstract
The invention discloses a kind of preparation methods of Cu-W bimetallic stratified material; the surface of tungsten block and copper billet is pre-processed first; then casing play is prepared; and casing play is placed on pretreated tungsten block; then pretreated copper billet is placed on casing play; and tungsten block, casing play and the copper billet put well in order are placed in gas-protecting sintering furnace together and carry out the realization infiltration connection of gas-protecting sintering furnace, obtain Cu-W bimetallic stratified material.A kind of preparation method of Cu-W bimetallic stratified material of the invention, the double metallic composite material of formation is other than the respective superior function with Ni metal and W, while bond strength also with higher.
Description
Technical field
The invention belongs to double metallic composite material preparation technical fields, and in particular to a kind of Cu-W bimetallic stratified material
Preparation method.
Background technique
Tungsten-copper Composites are made of tungsten and highly conductive, high thermal conductivity the fine copper or copper alloy of high-melting-point, high rigidity
's.Copper-tungsten because high-melting-point, high intensity, good electrical erosion resistance, low thermal coefficient of expansion and it is good it is thermally conductive, electric conductivity is wide
The general military project material for being applied to electrode material and specific use, such as rocket nozzle, aircraft larynx serve as a contrast field.It is filled in nuclear fusion reaction
In setting, material requirements of the divertor in face of plasma side has good high temperature resistance, and the material of other side needs are excellent
Heating conduction.The fusing point of tungsten is very high, is suitable as the heat-resisting material towards plasma, and copper has good thermal conductivity
Can, it can be used as basis material and play thermally conductive and cooling effect, but tungsten differs larger with the thermal expansion coefficient of copper, in high temperature item
Biggish thermal stress can be generated in the interface of two kinds of materials under part, therefore the interface for regulating and controlling copper-tungsten is to be highly desirable
's.
Summary of the invention
The object of the present invention is to provide a kind of preparation method of Cu-W bimetallic stratified material, the bimetallic composite woods of formation
Material is other than the respective superior function with Ni metal and W, while bond strength also with higher.
The technical scheme adopted by the invention is that a kind of preparation method of Cu-W bimetallic stratified material, first to tungsten block
It is pre-processed with the surface of copper billet, then prepares casing play, and casing play is placed on pretreated tungsten block, it then will be through
Pretreated copper billet is placed on casing play, and tungsten block, casing play and the copper billet put well in order are placed in atmosphere together and protected
It protects sintering furnace and carries out the realization infiltration connection of gas-protecting sintering furnace, obtain Cu-W bimetallic stratified material.
It is of the invention to be further characterized in that,
Pretreated process is carried out to the surface of tungsten block are as follows: first with the oxide skin on sand paper polishing tungsten block surface and dirty, then
Tungsten block oxide skin remained on surface is rinsed with gasoline, the greasy dirt on tungsten block surface is then remained in alcohol washes.
Pretreated process is carried out to the surface of copper billet are as follows: with the oxide skin of sand paper polishing copper block surface and dirty, then use
Gasoline rinses the remaining oxide skin of copper block surface, remains in the greasy dirt of copper block surface with alcohol washes again.
Prepare the process of casing play are as follows: tungsten powder and nickel powder are uniformly mixed according to a certain percentage and obtain tungsten nickel mixed powder, so
Tungsten nickel mixed powder is suppressed afterwards, forms the casing play with a thickness of 500-800 μm.
Nickel powder accounts for tungsten nickel mixed powder mass percent are as follows: 2%-25%.
Tungsten block, casing play and the copper billet put well in order are placed in gas-protecting sintering furnace together and carry out atmosphere protection burning
Freezing of a furnace realizes infiltration connection are as follows: tungsten block, casing play and the copper billet put well in order are put into crucible, are then put into crucible
In gas-protecting sintering furnace, is begun to warm up after the air of gas emptying stove interior is flushed with hydrogen to gas-protecting sintering furnace, work as sintering furnace
After temperature reaches 1250-1400 DEG C, 60-150min is kept the temperature, then passes to nitrogen furnace cooling, obtains Cu-W bimetallic stratiform material
Material.
The beneficial effects of the present invention are: a kind of preparation method of Cu-W bimetallic stratified material of the present invention, utilizes Ni metal
With difference of the W on fusing point, the thin layer tungsten nickel skeleton prepared in advance is added between Cu and W and realizes the high-intensitive metallurgy of the two
In conjunction with being handled by gas-protecting sintering and Slow cooling, the double metallic composite material of formation is in addition to each with Ni metal and W
From outside superior function, while bond strength also with higher, interface bond strength reach as high as 113MPa or more, realize knot
Structure function integration.
Detailed description of the invention
Fig. 1 be nickel powder account for tungsten nickel mixed powder mass percent be 20% when casing play Cu-W bi-metal interface at pattern
Figure；
Fig. 2 is hardness profile figure at the Cu-W bi-metal interface of 1-4 of embodiment of the present invention preparation.
Specific embodiment
The following describes the present invention in detail with reference to the accompanying drawings and specific embodiments.
A kind of preparation method of Cu-W bimetallic stratified material of the present invention, first locates the surface of tungsten block and copper billet in advance
Reason, wherein pretreated process is carried out to the surface of tungsten block are as follows: first with the oxide skin on sand paper polishing tungsten block surface and dirty, then
Tungsten block oxide skin remained on surface is rinsed with gasoline, the greasy dirt on tungsten block surface is then remained in alcohol washes；To the table of copper billet
Face carries out pretreated process are as follows: with the oxide skin of sand paper polishing copper block surface and dirty, then with gasoline to rinse copper block surface residual
The oxide skin stayed remains in the greasy dirt of copper block surface with alcohol washes again；Then tungsten powder and nickel powder are mixed according to a certain percentage
Conjunction uniformly obtains tungsten nickel mixed powder, then suppresses tungsten nickel mixed powder, forms the casing play with a thickness of 500-800 μm, and
Casing play is placed on pretreated tungsten block, wherein nickel powder accounts for tungsten nickel mixed powder mass percent are as follows: 2%-25%, then
Pretreated copper billet is placed on casing play, and tungsten block, casing play and the copper billet put well in order are put into crucible,
Then crucible is put into gas-protecting sintering furnace, is started after the air of gas emptying stove interior is flushed with hydrogen to gas-protecting sintering furnace
Heating keeps the temperature 60-150min after sintering furnace temperature reaches 1250-1400 DEG C, then passes to nitrogen furnace cooling, obtains Cu-
W bimetallic stratified material.
Embodiment 1
Cu-W double metallic composite material is prepared, tungsten block is processed into having a size of Φ 20mm × 10mm cylindrical body, meanwhile, by Cu
It is processed into having a size of Φ 20mm × 40mm cylindrical body.
Tungsten block oxide skin remained on surface is rinsed with the sand paper polishing oxide skin on tungsten block surface and dirty, then with gasoline, then
Secondary alcohol washes remain in the greasy dirt on surface；Tungsten nickel powder is uniformly mixed (nickel mass percent are as follows: 2%) after, be pressed into 500
μm casing play is placed on tungsten block.Copper block surface residual is rinsed with the sand paper polishing oxide skin of copper block surface and dirty, then with gasoline
Oxide skin, remain in the greasy dirt on surface with alcohol washes again.
Tungsten block, copper billet and the casing play handled well be placed in crucible to (tungsten block under, upper, casing play exists copper billet
It is intermediate), it places into gas-protecting sintering furnace, begins to warm up, be heated to after being passed through the air of 40min hydrogen emptying stove interior
After 1250 DEG C, 150min is kept the temperature, after copper liquid, which immerses tungsten block surface, completes diffusion molding, nitrogen furnace cooling is passed through, obtains Cu-
W bimetallic stratified material.As shown in Fig. 2, it is average with a thickness of 751 μm to measure skeleton, the neighbouring hardness distribution gradient in interface, the side W
Interface hardness reaches 248HV, and interface bond strength reaches 34.3MPa.
Embodiment 2
Cu-W double metallic composite material is prepared, tungsten block is processed into having a size of Φ 20mm × 10mm cylindrical body, meanwhile, by Cu
It is processed into having a size of Φ 20mm × 40mm cylindrical body.
Tungsten block oxide skin remained on surface is rinsed with the sand paper polishing oxide skin on tungsten block surface and dirty, then with gasoline, then
Secondary alcohol washes remain in the greasy dirt on surface；Tungsten nickel powder is uniformly mixed (nickel mass percent are as follows: 10%) after, be pressed into
600 μm of casing plays are placed on tungsten block.With the sand paper polishing oxide skin of copper block surface and dirty, then with gasoline to rinse copper block surface residual
The oxide skin stayed remains in the greasy dirt on surface with alcohol washes again.
Tungsten block, copper billet and the casing play handled well be placed in crucible to (tungsten block under, upper, casing play exists copper billet
It is intermediate), it places into gas-protecting sintering furnace, begins to warm up, be heated to after being passed through the air of 40min hydrogen emptying stove interior
After 1300 DEG C, 120min is kept the temperature, after copper liquid, which immerses tungsten block surface, completes diffusion molding, nitrogen furnace cooling is passed through, obtains Cu-
W bimetallic material.As shown in Fig. 2, it is average with a thickness of 442 μm to measure skeleton, the neighbouring hardness distribution gradient in interface, the side W interface
Place's hardness reaches 649HV, and interface bond strength reaches 45.6MPa.
Embodiment 3
Cu-W double metallic composite material is prepared, tungsten block is processed into having a size of Φ 20mm × 10mm cylindrical body, meanwhile, by Cu
It is processed into having a size of Φ 20mm × 40mm cylindrical body.
Tungsten block oxide skin remained on surface is rinsed with the sand paper polishing oxide skin on tungsten block surface and dirty, then with gasoline, then
Secondary alcohol washes remain in the greasy dirt on surface；Tungsten nickel powder is uniformly mixed (nickel mass percent are as follows: 20%) after, be pressed into
700 μm of casing plays are placed on tungsten block.With the sand paper polishing oxide skin of copper block surface and dirty, then with gasoline to rinse copper block surface residual
The oxide skin stayed remains in the greasy dirt on surface with alcohol washes again.
Tungsten block, copper billet and the casing play handled well be placed in crucible to (tungsten block under, upper, casing play exists copper billet
It is intermediate), it places into gas-protecting sintering furnace, begins to warm up, be heated to after being passed through the air of 40min hydrogen emptying stove interior
After 1350 DEG C, 90min is kept the temperature, after copper liquid, which immerses tungsten block surface, completes diffusion molding, nitrogen furnace cooling is passed through, obtains Cu-W
Bimetallic material.As shown in Figure 1 and Figure 2, it is average with a thickness of 346 μm to measure skeleton, the neighbouring hardness distribution gradient in interface, the side W circle
Hardness reaches 883HV at face, and interface bond strength reaches 73.4MPa.
Embodiment 4
Cu-W double metallic composite material is prepared, tungsten block is processed into having a size of Φ 20mm × 10mm cylindrical body, meanwhile, by Cu
It is processed into having a size of Φ 20mm × 40mm cylindrical body.
Tungsten block oxide skin remained on surface is rinsed with the sand paper polishing oxide skin on tungsten block surface and dirty, then with gasoline, then
Secondary alcohol washes remain in the greasy dirt on surface；Tungsten nickel powder is uniformly mixed (nickel mass percent are as follows: 25%) after, be pressed into
800 μm of casing plays are placed on tungsten block.With the sand paper polishing oxide skin of copper block surface and dirty, then with gasoline to rinse copper block surface residual
The oxide skin stayed remains in the greasy dirt on surface with alcohol washes again.
Tungsten block, copper billet and the casing play handled well be placed in crucible to (tungsten block under, upper, casing play exists copper billet
It is intermediate), it places into gas-protecting sintering furnace, begins to warm up, be heated to after being passed through the air of 40min hydrogen emptying stove interior
After 1400 DEG C, 60min is kept the temperature, after copper liquid, which immerses tungsten block surface, completes diffusion molding, nitrogen furnace cooling is passed through, obtains Cu-W
Bimetallic material.As shown in Fig. 2, it is average with a thickness of 510 μm to measure skeleton, the neighbouring hardness distribution gradient in interface, the side W interface
Hardness reaches 1167HV, and interface bond strength reaches 113MPa.
Claims (6)
1. a kind of preparation method of Cu-W bimetallic stratified material, which is characterized in that carried out first to the surface of tungsten block and copper billet
Pretreatment, then prepares casing play, and casing play is placed on pretreated tungsten block, then places pretreated copper billet
On casing play, and tungsten block, casing play and the copper billet put well in order are placed in gas-protecting sintering furnace together and carry out atmosphere
It protects sintering furnace to realize infiltration connection, obtains Cu-W bimetallic stratified material.
2. a kind of preparation method of Cu-W bimetallic stratified material according to claim 1, which is characterized in that described to tungsten
The surface of block carries out pretreated process are as follows: first with the oxide skin on sand paper polishing tungsten block surface and dirty, then with gasoline rinses tungsten
Block oxide skin remained on surface, then remains in the greasy dirt on tungsten block surface with alcohol washes.
3. a kind of preparation method of Cu-W bimetallic stratified material according to claim 1, which is characterized in that described to copper
The surface of block carries out pretreated process are as follows: rinses copper billet with the oxide skin of sand paper polishing copper block surface and dirty, then with gasoline
Oxide skin remained on surface remains in the greasy dirt of copper block surface with alcohol washes again.
4. a kind of preparation method of Cu-W bimetallic stratified material according to claim 1, which is characterized in that the preparation
The process of casing play are as follows: tungsten powder and nickel powder are uniformly mixed according to a certain percentage and obtain tungsten nickel mixed powder, then tungsten nickel is mixed
Powder is suppressed, and the casing play with a thickness of 500-800 μm is formed.
5. a kind of preparation method of Cu-W bimetallic stratified material according to claim 4, which is characterized in that nickel powder accounts for tungsten
Nickel mixed powder mass percent are as follows: 2%-25%.
6. a kind of preparation method of Cu-W bimetallic stratified material according to claim 1, which is characterized in that it is described will be by
Tungsten block, casing play and the copper billet that order is put well are placed in gas-protecting sintering furnace together and carry out gas-protecting sintering furnace realization infiltration
Connection are as follows: tungsten block, casing play and the copper billet put well in order are put into crucible, crucible is then put into gas-protecting sintering
In furnace, begun to warm up after the air of gas emptying stove interior is flushed with hydrogen to gas-protecting sintering furnace, when sintering furnace temperature reaches 1250-
After 1400 DEG C, 60-150min is kept the temperature, then passes to nitrogen furnace cooling, obtains Cu-W bimetallic stratified material.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111940743A (en) * | 2020-08-13 | 2020-11-17 | 山东威尔斯通钨业有限公司 | Preparation method of tungsten and copper solderless seamless connection combined part |
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| JPS55122806A (en) * | 1979-03-12 | 1980-09-20 | Hitachi Ltd | Production of porous high melting point metal member |
| CN106077937A (en) * | 2016-06-24 | 2016-11-09 | 西安理工大学 | A kind of preparation method of al cu bimetal composite |
| CN106475563A (en) * | 2016-10-31 | 2017-03-08 | 西北有色金属研究院 | A kind of gradient tungsten-copper composite material and preparation method thereof |
| CN107498047A (en) * | 2017-09-01 | 2017-12-22 | 西北有色金属研究院 | A kind of tungsten-copper composite material and preparation method thereof |
| CN107740006A (en) * | 2017-09-19 | 2018-02-27 | 上海工程技术大学 | A kind of Cu/W composites of property anisotropy and preparation method thereof |
-
2018
- 2018-08-16 CN CN201810934625.3A patent/CN109128194B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55122806A (en) * | 1979-03-12 | 1980-09-20 | Hitachi Ltd | Production of porous high melting point metal member |
| CN106077937A (en) * | 2016-06-24 | 2016-11-09 | 西安理工大学 | A kind of preparation method of al cu bimetal composite |
| CN106475563A (en) * | 2016-10-31 | 2017-03-08 | 西北有色金属研究院 | A kind of gradient tungsten-copper composite material and preparation method thereof |
| CN107498047A (en) * | 2017-09-01 | 2017-12-22 | 西北有色金属研究院 | A kind of tungsten-copper composite material and preparation method thereof |
| CN107740006A (en) * | 2017-09-19 | 2018-02-27 | 上海工程技术大学 | A kind of Cu/W composites of property anisotropy and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111940743A (en) * | 2020-08-13 | 2020-11-17 | 山东威尔斯通钨业有限公司 | Preparation method of tungsten and copper solderless seamless connection combined part |
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