CN101386948A - Rolled tungsten-copper alloy material and preparation method thereof - Google Patents
Rolled tungsten-copper alloy material and preparation method thereof Download PDFInfo
- Publication number
- CN101386948A CN101386948A CNA2008101374410A CN200810137441A CN101386948A CN 101386948 A CN101386948 A CN 101386948A CN A2008101374410 A CNA2008101374410 A CN A2008101374410A CN 200810137441 A CN200810137441 A CN 200810137441A CN 101386948 A CN101386948 A CN 101386948A
- Authority
- CN
- China
- Prior art keywords
- tungsten
- alloy material
- copper alloy
- powder
- rolled
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000956 alloy Substances 0.000 title claims abstract description 64
- SBYXRAKIOMOBFF-UHFFFAOYSA-N copper tungsten Chemical compound [Cu].[W] SBYXRAKIOMOBFF-UHFFFAOYSA-N 0.000 title claims abstract description 64
- 229910000881 Cu alloy Inorganic materials 0.000 title claims abstract description 61
- 238000002360 preparation method Methods 0.000 title claims abstract description 22
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims abstract description 28
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 22
- 238000000034 method Methods 0.000 claims abstract description 20
- 239000011812 mixed powder Substances 0.000 claims abstract description 11
- 239000000463 material Substances 0.000 claims abstract description 10
- 238000010438 heat treatment Methods 0.000 claims abstract description 6
- 239000000843 powder Substances 0.000 claims description 9
- 239000010949 copper Substances 0.000 claims description 8
- 229910052802 copper Inorganic materials 0.000 claims description 7
- 238000003801 milling Methods 0.000 claims description 7
- 239000002245 particle Substances 0.000 claims description 7
- 239000000314 lubricant Substances 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- 229910052721 tungsten Inorganic materials 0.000 claims description 6
- 239000010937 tungsten Substances 0.000 claims description 6
- 238000001125 extrusion Methods 0.000 claims description 5
- 238000009826 distribution Methods 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 2
- 238000003754 machining Methods 0.000 abstract description 2
- 238000003466 welding Methods 0.000 abstract description 2
- 238000010892 electric spark Methods 0.000 abstract 1
- 238000004100 electronic packaging Methods 0.000 abstract 1
- 238000009849 vacuum degassing Methods 0.000 abstract 1
- 238000005245 sintering Methods 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 1
- 210000000481 breast Anatomy 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000001513 hot isostatic pressing Methods 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000007750 plasma spraying Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Abstract
The invention relates to a rolled tungsten-copper alloy material and a preparation method thereof, and relates to a tungsten-copper alloy material and a preparation method thereof. The invention solves the problems of poor compatibility between phases, less than 99 percent of density, high cost of manufacture equipment, complex technological process, large energy consumption and low production efficiency in the prior tungsten-copper alloy material. The rolled tungsten-copper alloy material is prepared by tungsten powder and copper powder. The preparation method comprises the following steps: firstly, preparation of mixed powder; secondly, preparation of a blank; thirdly, vacuum degassing of the blank; fourthly, preparation of an extruded tungsten-copper alloy material; and fifthly, acquisition of the rolled tungsten-copper alloy material after heating and pressurizing of the extruded tungsten-copper alloy material. The rolled tungsten-copper alloy material has good compatibility between the phases, and increases the density by 0.2 to 0.5 percent. The preparation method is simple, and has low equipment cost required, simple technology, low energy consumption and high production efficiency. The rolled tungsten-copper alloy material and the preparation method are suitable to be used in the fields of preparation, application and so on of electric spark machining electrodes, resistance welding electrodes and electronic packaging and heat sinking materials.
Description
Technical field
The present invention relates to a kind of tungsten-copper alloy material and preparation method thereof.
Background technology
Tungsten-copper powder alloy material makes tungsten-copper powder alloy material combine the advantage of these two kinds of elements owing to contained the W elements of high-melting-point, high rigidity and the Cu element of high conduction, thermal conductivity.So be widely used in the fields such as heat sink substrate of electron devices such as the lead frame of preparation, computer central processing system, large-scale integrated circuit of preparation, the electronic package material of resistance welding, electrospark machining and plasma spraying electrode materials and solid state microwave pipe.But since immiscible between tungsten and the copper, pseudoalloy only formed between the two, to such an extent as to influence the performance of alloy, and conventional metallurgy and powder metallurgic method are difficult to produce high-end Tungsten-copper Composites.
At present, make the method for tungsten-copper alloy material densification mainly contain melting infiltration sintering method, activated sintering method, vacuum hot-pressing and hot isostatic pressing method, but because of these methods all exist equipment cost height, complex technical process, energy consumption is big, production efficiency is low, the product density that obtains is lower than 99% problem
Summary of the invention
There is product in the present invention consistency difference and density is lower than 99% between phase and phase in order to solve existing tungsten-copper alloy material, producing apparatus cost height, complex technical process, the problem that energy consumption is big, production efficiency is low, and a kind of rolled tungsten-copper alloy material that provides and preparation method thereof.
Rolled tungsten-copper alloy material is made by 10%～90% tungsten powder and 10%～90% copper powder by weight percentage; Wherein the tungsten powder Fisher particle size is 1～10 μ m; The banded distribution of converted top that is deformation at inner tungsten of rolled tungsten-copper alloy material and copper mutually.
The method for preparing rolled tungsten-copper alloy material realizes according to the following steps: one, get 10%～90% tungsten powder and 10%～90% copper powder by weight percentage, with 50～70r/min speed powder mixing machine, 50～70h, mixed powder; Two, with mixed powder base material under 200～900MPa forming pressure condition, the relative density that makes blank is 75%～85%; Three, blank is carried out vacuum outgas; Four, with blank heating to 600～1300 ℃ and put into the mold cavity that has lubricant, earlier applied pressure is increased to 1000～1200MPa, stable then is under 4～36 conditions to 500MPa in extrusion ratio, extruding 3～5s must push attitude tungsten-copper alloy material; Five, earlier two rolls of milling train are preheated to 200～500 ℃, to push attitude tungsten-copper alloy material then and be heated to 500～1050 ℃, then put into roll and applied pressure to 1000～1200MPa, making every time control roll amount or relative reduction in area is 10%～40%, promptly gets rolled tungsten-copper alloy material; Wherein the tungsten powder Fisher particle size is 1～10 μ m in the step 1.
The rolled tungsten-copper alloy material that the present invention obtains can know that through electron-microscope scanning tungsten and copper are banded distribution of converted top of deformation in rolled tungsten-copper alloy material inside, and two-phase is out of shape jointly in preparation process, then forms the fiber reinforcement phase.Rolled tungsten-copper alloy material not only can not reduce the electroconductibility of copper matrix, will more keep copper good electrical conductivity and thermal conductivity; Because of tungsten is the high-melting-point element mutually, improved the room temperature and the high-temperature behavior of rolled tungsten-copper alloy material more again.The rolled tungsten-copper alloy material that the present invention obtains relative density after measured is 99.2～99.5%, and specific conductivity is 34.6～35.8m/ Ω mm
2, Vickers' hardness is HV180～192.Employed equipment is simple among the present invention, cost is low; The starting material source is cheap, market can be buied, and greatly reduces production cost; Technological process is simple, processing ease, the ability that consumed are low, has improved the efficient of producing greatly.
Embodiment
Technical solution of the present invention is not limited to following cited embodiment, also comprises the arbitrary combination between each embodiment.
Embodiment one: the present embodiment rolled tungsten-copper alloy material is made by 10%～90% tungsten powder and 10%～90% copper powder by weight percentage; Wherein the tungsten powder Fisher particle size is 1～10 μ m; The banded distribution of converted top that is deformation at inner tungsten of rolled tungsten-copper alloy material and copper mutually.
Embodiment two: the difference of present embodiment and embodiment one is: rolled tungsten-copper alloy material is made by 20%～80% tungsten powder and 20%～80% copper powder by weight percentage.Other is identical with embodiment one.
Embodiment three: present embodiment and embodiment one or twos' difference is: rolled tungsten-copper alloy material is made by 60% tungsten powder and 40% copper powder by weight percentage.Other is identical with embodiment one.
Embodiment four: the method that present embodiment prepares rolled tungsten-copper alloy material realizes according to the following steps: one, get 10%～90% tungsten powder and 10%～90% copper powder by weight percentage, with 50～70r/min speed powder mixing machine, 50～70h, get mixed powder; Two, with mixed powder base material under 200～900MPa forming pressure condition, the relative density that makes blank is 75%～85%; Three, blank is carried out vacuum outgas; Four, with blank heating to 600～1300 ℃ and put into the mold cavity that has lubricant, earlier applied pressure is increased to 1000～1200MPa, stable then is under 4～36 conditions to 500MPa in extrusion ratio, extruding 3～5s must push attitude tungsten-copper alloy material; Five, earlier two rolls of milling train are preheated to 200～500 ℃, to push attitude tungsten-copper alloy material then and be heated to 500～1050 ℃, then put into roll and applied pressure to 1000～1200MPa, making every time control roll amount or relative reduction in area is 10%～40%, promptly gets rolled tungsten-copper alloy material; Wherein the tungsten powder Fisher particle size is 1～10 μ m in the step 1.
The rolled tungsten-copper alloy material that present embodiment obtains is because of the sheet material or the bar of the different available shape arbitrarily of mould, to adapt to the demand of different field.
Embodiment five: the difference of present embodiment and embodiment four is: get 20%～80% tungsten powder and 20%～80% copper powder in the step 1 by weight percentage.Other step is identical with embodiment four with parameter.
Embodiment six: present embodiment and embodiment four or fives' difference is: get 60% tungsten powder and 40% copper powder in the step 1 by weight percentage.Other step is identical with embodiment four or five with parameter.
Embodiment seven: the difference of present embodiment and embodiment four is: in the step 1 with 60r/min speed powder mixing machine 60h.Other step is identical with embodiment four with parameter.
Embodiment eight: the difference of present embodiment and embodiment four is: in the step 2 with mixed powder base material under 400～700MPa forming pressure condition.Other step is identical with embodiment four with parameter.
Embodiment nine: present embodiment and embodiment four or eights' difference is: in the step 2 with mixed powder base material under 500MPa forming pressure condition.Other step is identical with embodiment four or eight with parameter.
Embodiment ten: the difference of present embodiment and embodiment four is: lubricant is an aquadag in the step 4.Other step is identical with embodiment four with parameter.
Embodiment 11: present embodiment and embodiment four or tens' difference is: in the step 4 with blank heating to 800～1000 ℃ and put into the mold cavity that has lubricant.Other step is identical with embodiment four or ten with parameter.
Embodiment 12: the difference of present embodiment and embodiment four is: earlier applied pressure is increased to 1100MPa in the step 4.Other step is identical with embodiment four with parameter.
Embodiment 13: the difference of present embodiment and embodiment four is: be under 24 conditions in extrusion ratio in the step 4, and extruding 4s.Other step is identical with embodiment four with parameter.
Embodiment 14: the difference of present embodiment and embodiment four is: in the step 5 two rolls of milling train are preheated to 300～400 ℃.Other step is identical with embodiment four with parameter.
Embodiment 15: the difference of present embodiment and embodiment four or 14 is: in the step 5 two rolls of milling train are preheated to 350 ℃.Other step is identical with embodiment four or 14 with parameter.
Embodiment 16: the difference of present embodiment and embodiment four is: will push attitude tungsten-copper alloy material in the step 5 and be heated to 700～1000 ℃.Other step is identical with embodiment four with parameter.
Embodiment 17: the difference of present embodiment and embodiment four or 16 is: will push attitude tungsten-copper alloy material in the step 5 and be heated to 900 ℃.Other step is identical with embodiment four or 16 with parameter.
Embodiment 18: the difference of present embodiment and embodiment four is: applied pressure increases to 1100MPa in the step 5.Other step is identical with embodiment four with parameter.
Embodiment 19: the method that present embodiment prepares rolled tungsten-copper alloy material realizes according to the following steps: one, get 60% tungsten powder and 40% copper powder by weight percentage, with 60r/min speed powder mixing machine 40h, mixed powder; Two, with mixed powder base material under 500MPa forming pressure condition, the relative density that makes blank is 75%～85%; Three, blank is carried out vacuum outgas; Four, with blank heating to 900 ℃ and put into the mold cavity that has lubricated breast, earlier applied pressure is increased to 1100MPa, stable then is under 24 conditions to 500MPa in extrusion ratio, extruding 4s must push attitude tungsten-copper alloy material; Five, earlier two rolls of milling train are preheated to 350 ℃, to push attitude tungsten-copper alloy material then and be heated to 900 ℃, then put into roll and applied pressure and increase to 1100MPa, making every time control roll amount or relative reduction in area is 10%～40%, promptly gets rolled tungsten-copper alloy material; Wherein the tungsten powder Fisher particle size is 1～10 μ m in the step 1.
The rolled tungsten-copper alloy material composition that present embodiment obtains is 60W-40Cu; Material thickness after rolling is 2mm.
The rolled tungsten-copper alloy material that present embodiment obtains is 99.2% through recording relative density, and specific conductivity is 34.6m/ Ω .mm
2, Vickers' hardness is HV180.
Claims (9)
1, a kind of rolled tungsten-copper alloy material is characterized in that rolled tungsten-copper alloy material made by 10%～90% tungsten powder and 10%～90% copper powder by weight percentage, and wherein the tungsten powder Fisher particle size is 1～10 μ m; The banded distribution of converted top that is deformation at inner tungsten of rolled tungsten-copper alloy material and copper mutually.
2, a kind of rolled tungsten-copper alloy material according to claim 1 is characterized in that rolled tungsten-copper alloy material made by 20%～80% tungsten powder and 20%～80% copper powder by weight percentage.
3, a kind of rolled tungsten-copper alloy material according to claim 1 is characterized in that rolled tungsten-copper alloy material made by 60% tungsten powder and 40% copper powder by weight percentage.
4, the method for preparation a kind of rolled tungsten-copper alloy material as claimed in claim 1, it is characterized in that the method for preparing rolled tungsten-copper alloy material realizes according to the following steps: one, get 10%～90% tungsten powder and 10%～90% copper powder by weight percentage, with 50～70r/min speed powder mixing machine, 50～70h, get mixed powder; Two, with mixed powder base material under 200～900MPa forming pressure condition, the relative density that makes blank is 75%～85%; Three, blank is carried out vacuum outgas; Four, with blank heating to 600～1300 ℃ and put into the mold cavity that has lubricant, earlier applied pressure is increased to 1000～1200MPa, stable then is under 4～36 conditions to 500MPa in extrusion ratio, extruding 3～5s must push attitude tungsten-copper alloy material; Five, earlier two rolls of milling train are preheated to 200～500 ℃, to push attitude tungsten-copper alloy material then and be heated to 500～1050 ℃, then put into roll and applied pressure to 1000～1200MPa, making every time control roll amount or relative reduction in area is 10%～40%, promptly gets rolled tungsten-copper alloy material; Wherein the tungsten powder Fisher particle size is 1～10 μ m in the step 1.
6, the method for a kind of rolled tungsten-copper alloy material of preparation according to claim 5 is characterized in that getting by weight percentage in the step 1 20%～80% tungsten powder and 20%～80% copper powder.
7, the method for a kind of rolled tungsten-copper alloy material of preparation according to claim 5 is characterized in that in the step 1 with 60r/min speed powder mixing machine 60h.
8, the method for a kind of rolled tungsten-copper alloy material of preparation according to claim 5 is characterized in that lubricant is an aquadag in the step 4.
9, the method for a kind of rolled tungsten-copper alloy material of preparation according to claim 5 is characterized in that in the step 5 two rolls of milling train being preheated to 300～400 ℃.
10, the method for a kind of rolled tungsten-copper alloy material of preparation according to claim 5 is characterized in that will pushing in the step 5 attitude tungsten-copper alloy material and is heated to 700～1000 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101374410A CN101386948B (en) | 2008-10-31 | 2008-10-31 | Rolled tungsten-copper alloy material preparation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101374410A CN101386948B (en) | 2008-10-31 | 2008-10-31 | Rolled tungsten-copper alloy material preparation method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101386948A true CN101386948A (en) | 2009-03-18 |
| CN101386948B CN101386948B (en) | 2010-09-29 |
Family
ID=40476615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101374410A Expired - Fee Related CN101386948B (en) | 2008-10-31 | 2008-10-31 | Rolled tungsten-copper alloy material preparation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101386948B (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102489513A (en) * | 2011-12-30 | 2012-06-13 | 西安超码复合材料公司 | Method for rolling tungsten copper thin plate with high tungsten content |
| CN102605307A (en) * | 2012-03-22 | 2012-07-25 | 西安理工大学 | Preparation method for tungsten copper alloy sheet |
| CN102873095A (en) * | 2012-10-22 | 2013-01-16 | 上海瑞钼特金属新材料有限公司 | Low-temperature rolling method for preparing molybdenum-copper alloy |
| CN103100715A (en) * | 2013-01-18 | 2013-05-15 | 中南大学 | Method for processing Beryllium copper plate strip for secondary electronic emission |
| CN104209532A (en) * | 2014-03-19 | 2014-12-17 | 天龙钨钼（天津）有限公司 | Thin tungsten copper sheet and preparing method of thin tungsten copper sheet |
| CN104404282A (en) * | 2014-12-02 | 2015-03-11 | 天龙钨钼（天津）有限公司 | Tungsten copper alloy with low tungsten content and preparation method of tungsten copper alloy |
| CN105039876A (en) * | 2015-07-06 | 2015-11-11 | 西安理工大学 | Preparation method for W-Cu composite materials of fiber and particle hybrid structure |
| CN109402478A (en) * | 2018-12-27 | 2019-03-01 | 广东省材料与加工研究所 | A kind of tungsten-copper alloy and its injection molding technique |
| CN112080676A (en) * | 2020-08-12 | 2020-12-15 | 西安理工大学 | Flaky powder micro-laminated W-based composite material and preparation method thereof |
-
2008
- 2008-10-31 CN CN2008101374410A patent/CN101386948B/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102489513B (en) * | 2011-12-30 | 2013-12-11 | 西安超码复合材料公司 | Method for rolling tungsten copper thin plate with high tungsten content |
| CN102489513A (en) * | 2011-12-30 | 2012-06-13 | 西安超码复合材料公司 | Method for rolling tungsten copper thin plate with high tungsten content |
| CN102605307A (en) * | 2012-03-22 | 2012-07-25 | 西安理工大学 | Preparation method for tungsten copper alloy sheet |
| CN102873095A (en) * | 2012-10-22 | 2013-01-16 | 上海瑞钼特金属新材料有限公司 | Low-temperature rolling method for preparing molybdenum-copper alloy |
| CN102873095B (en) * | 2012-10-22 | 2014-11-12 | 上海瑞钼特金属新材料有限公司 | Low-temperature rolling method for preparing molybdenum-copper alloy |
| CN103100715B (en) * | 2013-01-18 | 2017-06-06 | 中南大学 | A kind of processing method of Beryllium copper plate strip for secondary electronic emission |
| CN103100715A (en) * | 2013-01-18 | 2013-05-15 | 中南大学 | Method for processing Beryllium copper plate strip for secondary electronic emission |
| CN104209532A (en) * | 2014-03-19 | 2014-12-17 | 天龙钨钼（天津）有限公司 | Thin tungsten copper sheet and preparing method of thin tungsten copper sheet |
| CN104209532B (en) * | 2014-03-19 | 2017-01-11 | 安泰天龙（天津）钨钼科技有限公司 | Thin tungsten copper sheet and preparing method of thin tungsten copper sheet |
| CN104404282B (en) * | 2014-12-02 | 2017-02-22 | 安泰天龙（天津）钨钼科技有限公司 | Tungsten copper alloy with low tungsten content and preparation method of tungsten copper alloy |
| CN104404282A (en) * | 2014-12-02 | 2015-03-11 | 天龙钨钼（天津）有限公司 | Tungsten copper alloy with low tungsten content and preparation method of tungsten copper alloy |
| CN105039876A (en) * | 2015-07-06 | 2015-11-11 | 西安理工大学 | Preparation method for W-Cu composite materials of fiber and particle hybrid structure |
| CN109402478A (en) * | 2018-12-27 | 2019-03-01 | 广东省材料与加工研究所 | A kind of tungsten-copper alloy and its injection molding technique |
| CN112080676A (en) * | 2020-08-12 | 2020-12-15 | 西安理工大学 | Flaky powder micro-laminated W-based composite material and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101386948B (en) | 2010-09-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101386948B (en) | Rolled tungsten-copper alloy material preparation method | |
| CN103352136B (en) | Copper-base contact material and manufacture craft | |
| CN104694895B (en) | W-Ti alloy target material and manufacturing method thereof | |
| CN101121201A (en) | Tungsten copper powder high compactedness material and method for preparing the material using heat extrusion | |
| CN105132726B (en) | A kind of copper-chromium contact material suitable for contactor and preparation method thereof | |
| CN102424918B (en) | Method for preparing MoCu gradient material | |
| CN103567452B (en) | A kind of tungsten-copper alloy preparation of plates method | |
| CN106676484A (en) | Binding method of chrome pipe target material | |
| CN104384518A (en) | Method for coating copper on surface of tungsten copper carbide alloy composite material | |
| US8048366B2 (en) | Process for making copper tungsten and copper molybdenum composite electronic packaging materials | |
| CN101537440A (en) | Method for preparing tungsten-copper alloy wires by utilizing hot-swage technology | |
| CN109848417B (en) | Low-melting-point metal wire for 3D printing and preparation method thereof | |
| CN108754272A (en) | A kind of preparation method of big L/D ratio fine grain tungsten copper bar | |
| CN106191511A (en) | The manufacture method of copper-chromium contact material | |
| CN101186983A (en) | Special copper alloy and manufacturing method thereof | |
| CN104308465A (en) | Boxy hole rolling method for large-sized high-thermal-conductivity diamond/copper composite board | |
| CN103177817A (en) | Hydrostatic extrusion preparing method of aluminum clad copper composite materials | |
| CN102259188B (en) | Method for producing high-energy rare earth powder alloy electrical contact material | |
| CN104625050A (en) | Electromagnetic pressing manufacturing method for environment-friendly brazing filler metal foil | |
| CN101386947A (en) | High specific gravity tungsten alloy material and preparation method thereof | |
| CN103509964B (en) | Rare earth alloy electrical contact terminal and production method thereof | |
| CN1844426A (en) | Method for producing dispersion strengthening copper alloy materials | |
| CN106191499B (en) | The method that powder metallurgic method prepares silumin | |
| CN103433486A (en) | Die for preparing silicon carbide silicon base plate framework and method for preparing silicon carbide silicon base plate | |
| CN103589883A (en) | Preparation method of tungsten copper alloy |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent of invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Yu Yang Inventor after: Zhang Wencong Inventor before: Yu Yang Inventor before: Wang Erde |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: YU YANG WANG ERDE TO: YU YANG ZHANG WENCONG |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20161110 Address after: 264209 Weihai Cultural Road West, Shandong, No. 2 Patentee after: Harbin Institute of Technology (Weihai) Address before: 150001 Department of materials engineering, School of materials science and engineering, 92 West straight street, Nangang District, Heilongjiang, Harbin Patentee before: Yu Yang |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100929 Termination date: 20171031 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |