CN101544077A - Novel silver alloy layered composite material and method for preparing same - Google Patents
Novel silver alloy layered composite material and method for preparing same Download PDFInfo
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- CN101544077A CN101544077A CN200910094221A CN200910094221A CN101544077A CN 101544077 A CN101544077 A CN 101544077A CN 200910094221 A CN200910094221 A CN 200910094221A CN 200910094221 A CN200910094221 A CN 200910094221A CN 101544077 A CN101544077 A CN 101544077A
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Abstract
The invention discloses an AgCuCe/TU1 noble metal layered composite material and a method for preparing the same. The material is compounded by a matrix layer of TU1 and a composite layer of AgCuCe alloy through rolling at room temperature, and the method comprises the following steps: before compounding, performing surface treatment on the composite layer and a matrix; slotting on the TU1 layer; inlaying the AgCuCe alloy into the slot; performing rolling compounding by using a composite rolling mill at room temperature; and performing a subsequent diffusion annealing process and precision rolling to prepare the AgCuCe/TU1 layered composite material. The composite material can be applied to electric contact elements in electrical instruments. The preparation process of the composite material is simple, and the materials used by the method and the preparation process are pollution-free, thus the composite material is applicable for large-scale continuous production with low cost.
Description
Technical field
The present invention relates to a kind of noble metal stratiform composite and preparation method thereof, AgCuCe/TU1 laminar composite specifically, it is an industrial oxygen-free copper, multiple rolling being composited of floor AgCuCe room temperature by base layer TU1, can be applicable to the contact material in the electrical instrumentation.
Background technology
Layered metal composite material is to utilize complex technique to make two or more physics, chemistry, metal or alloy that mechanical property is different realize firm metallurgical binding and a kind of new material of preparing on the interface.Layered metal composite material utilizes its performance advantage separately to carry out layering combination, has remedied the deficiency of independent constituent element, has promoted the raising of material combination property, also for rational selection with reduce cost more advantageous conditions is provided.The layered metal composite material production method is that the Metal and Control Cop. by the U.S. has proposed three-steps process in 1956 at first, that is: surface treatment-rolling is compound-the annealing intensive treatment, make room temperature solid phase complex technique obtain development rapidly, become one of the world today's most widely used making stratiform composite technology.In recent years domestic, the develop rapidly of electronic apparatus manufacturing industry, and require more and more higher in the performance indications of aspects such as miniaturization, good stability and long service life.Adopt traditional noble metal such as Au, Ag, Pt etc. and alloy thereof need consume a large amount of noble metals as this class contact material, the production cost height.Replace single metal or alloy with the combination of mechanical performance and electrical and thermal conductivity performance preferably of the good electrical contact performance of the multiple layer of noble metal and alloy thereof and cheap metal matrix, can obtain the optimum efficiency of super quality and competitive price.If any the document rolling compound preparation Ag/Cu micro-special-shaped contact composite of room temperature solid phase, can change the local train ability of interface bonding state and near interface tissue through 400 ℃ of annealing DIFFUSION TREATMENT, all do not have second to generate mutually in the solid solution of both sides, interface, significantly improve the binding ability at interface, and can further improve the binding ability of interface when bearing flexural deformation.Noble metal stratiform composite leading products are that AgCd/Cu, AgCdO/Cu and AgCuCd/Cu etc. contain the Cd composite at present.But this type of contains the Cd material in operations such as melting, hot-working, high-temperature oxydation, intermediate heat-treatment, removing surface and in the link such as use, recycling, Cd produces noxious material, human body (to bone, kidney, respiratory system injury) and environment are worked the mischief, do not meet environmental requirement.Aspect such as stable and long service life also can't satisfy the electrical instrumentation requirement to present domestic no Cd composite fully at contact resistance, and the RoHS of European Union instruction clearly proposes, from in July, 2006, strict restriction adopts the electric elements that contain harmful element materials such as Cd (maximum limit the quantity of 100mg/Kg) to enter European Union, therefore the novel electrical instrumentation composited contact material of a kind of Cd of nothing of necessary exploitation replaces traditional Cd material that contains.
Summary of the invention
The invention provides a kind of AgCuCe/TU1 laminar composite and preparation method thereof.Be the novel electrical instrumentation composited contact material of a kind of Cd of nothing, can replace traditional Cd material that contains.
AgCuCe/TU1 laminar composite of the present invention is made up of base layer TU1, multiple layer AgCuCe.---rolling compound---diffusion annealing reinforcement---precision rolling prepares the AgCuCe/TU1 laminar composite to adopt rolling compound four step process method, the i.e. surface treatments of room temperature.At first under the powerful pressure of milling train, realize the tentatively compound of TU1 and AgCuCe, prepare the AgCuCe/TU1 laminar composite through annealing, subsequent technique such as rolling again.The present invention adopts the composite that the belt method can the production rolling, has realized the serialization production of composite, has improved production efficiency greatly.
Concrete technical scheme is as follows:
(1) preparation of TU1 matrix: TU1 used in the present invention (an industrial oxygen-free copper) is banded.At first base material is carried out a. leveling and handle, make its thickness even; B. soft annealing: earlier the TU1 band is carried out soft annealing before compound,, cold with stove; C. surface treatment: keep clean for making faying face, clear up surface oxide layer with treating compound TU1 strip surface with the rotation steel brush, do so on the one hand and can further clean faying face, the more important thing is and to form the layer of brittle film by work hardening at material surface, help improving the bond strength after rolling; D. surface fluting: accurately locate for making plied timber AgCuCe alloy strip steel rolled stock, guarantees the compound afterwards dimensional accuracy and the positional precision of plied timber, the processing of slotting on the TU1 matrix in advance before compound is prepared compound.
(2) preparation of the multiple layer of AgCuCe alloy: a. melting: with purity is that 99.99%Ag and 99.95%Cu, Ce make raw material, and Efco-Northrup furnace vacuum melting is cast into slab ingot with graphite jig in graphite crucible.B. processing: the AgCuCe ingot casting is through hot cogging---intermediate annealing---surface treatment---in roll that---operations such as intermediate annealing---finish rolling---strip sub-cut are made band; C. soft annealing: before compound the AgCuCe band is carried out soft annealing, cold with stove; D. removing surface: use the sand papering surface earlier, carry out surface clean with organic solvent and acid solution again and remove organic class impurity and oxide on surface, obtain clean surface, prepare compound.
(3) the room temperature solid phase is compound: earlier the AgCuCe band being mounted to the degree of depth before compound is 0.42mm, and width is in the TU1 locating slot of 6mm, is rolled compound under the room temperature with composite rolling mill.
(4) diffusion annealing: adopt continuous bright annealing furnace to anneal, realize the strong bonded between the AgCuCe/TU1 interface.
(5) precision rolling: with finishing rolling mill the AgCuCe/TU1 laminar composite is carried out precision rolling, the binding ability with between further raising interface improves dimensional accuracy of products simultaneously, reaches the serviceability of customer requirement.
The present invention has the following advantages:
(1) the present invention adopts the composite of belt method production rolling, and process combination such as mating surface cleaning, heat treatment, sub-cut become the continuous-flow type production line, product size precision height, and multiple layer is thin, and thickness proportion is even between each layer, and production efficiency is higher, and waste material is few.
(2) preparation process of the present invention is pollution-free, and the composite material interface combination is good, no bad interfacial reaction.
(3) thickness of AgCuCe/TU1 laminar composite of the present invention can obtain the composite of different-thickness easily by the thickness of adjusting AgCuCe layer and TU1 layer, also can carry out many and inlay compound simultaneously.
(4) the laminar composite tensile strength of the present invention's preparation can reach 385MPa, can make percentage elongation reach 1%～12% by different technology.
Description of drawings
Fig. 1 is an AgCuCe/TU1 laminar composite preparation technology flow chart.
Fig. 2 is the variation of tensile strength and percentage elongation behind the AgCuCe/TU1 composite precision rolling.
Fig. 3 is the stretching fracture pattern scanned photograph of AgCuCe/TU1 composite after finish rolling 80%.
The specific embodiment
Concrete steps of the present invention are as follows:
(1) preparation of TU1 matrix: TU1 used in the present invention (an industrial oxygen-free copper) is banded, thickness 3mm, width 60mm.At first base material is carried out a. leveling and handle, make its thickness even, reach 3 ± 0.01mm; B. soft annealing: earlier the TU1 band is carried out soft annealing before compound, annealing process is 600 ℃/60min of vacuum, and is cold with stove; C. surface treatment: keep clean for making faying face, clear up surface oxide layer with treating compound TU1 strip surface with the rotation steel brush, do so on the one hand and can further clean faying face, the more important thing is and to form the layer of brittle film by work hardening at material surface, help improving the bond strength after rolling; D. surface fluting: accurately locate for making plied timber AgCuCe alloy strip steel rolled stock, guarantees the dimensional accuracy and the positional precision of compound back plied timber, the processing of slotting on the TU1 matrix in advance before compound is slotted and is of a size of 0.42mm * 6mm, prepares compound.
(2) preparation of the multiple layer of AgCuCe alloy: a. melting: with purity is that 99.99%Ag and 99.95%Cu, Ce make raw material, and Efco-Northrup furnace vacuum melting is cast into slab ingot with graphite jig in graphite crucible.B. processing: the AgCuCe ingot casting is through hot cogging---intermediate annealing---surface treatment---in roll that---operations such as intermediate annealing---finish rolling---strip sub-cut are made band, and ribbon dimension is: thickness: 0.38mm, width: 6mm; C. soft annealing: before compound the AgCuCe band is carried out soft annealing, annealing process is 700 ℃/60min of vacuum, and is cold with stove; D. removing surface: use the sand papering surface earlier, carry out surface clean with organic solvent and acid solution again and remove organic class impurity and oxide on surface, obtain clean surface, prepare compound.
(3) the room temperature solid phase is compound: earlier the AgCuCe band being mounted to the degree of depth before compound is 0.42mm, and width is in the TU1 locating slot of 6mm, is rolled compoundly under the room temperature with composite rolling mill, and rolling reduction is 70%～80%, and mill speed is about 3000mm/min.
(4) diffusion annealing: adopt continuous bright annealing furnace to anneal, 600 ℃～700 ℃ of annealing temperatures, annealing time is 3min～5min, realizes the strong bonded between the AgCuCe/TU1 interface.
(5) precision rolling: with finishing rolling mill the AgCuCe/TU1 laminar composite is carried out precision rolling, the binding ability with between further raising interface improves dimensional accuracy of products simultaneously, reaches the serviceability of customer requirement.
Each embodiment is as shown in the table:
| Embodiment | The composite rolling deflection | Annealing process | Finish-rolling process | Bending property | Percentage elongation % | Tensile strength (MPa) |
| Embodiment 1 | 60％ | 650℃/25min | Passage 28% is rolled 3 roads | 11 times | 3 | 323 |
| Embodiment 2 | 70％ | 600℃/15min | Passage 16% is rolled 5 roads | 19 times | 2 | 366 |
| Embodiment 3 | 77％ | 650℃/10min | Passage 10% is rolled 8 roads | 16 times | 3 | 387 |
| Embodiment 4 | 80％ | 750℃/5min | Passage 15% is rolled 6 roads | 15 times | 1.5 | 352 |
| Embodiment 5 | 83％ | 700℃/10min | Passage 10% is rolled 6 roads | 12 times | 2 | 309 |
Claims (9)
1, AgCuCe/TU1 laminar composite is characterized in that: matrix is TU1, and multiple layer is the AgCuCe alloy; The mass fraction of the Cu content in the multiple layer is 4%～8%, and the mass fraction of Ce content is for being 0.2%～0.7%, and Ag is a surplus.
2, according to the described AgCuCe/TU1 laminar composite of claim 1, the multiple layer thickness that it is characterized in that described AgCuCe alloy is 0.38 ± 0.01mm; The thickness of matrix TU1 is at 3 ± 0.01mm.
3, according to the described AgCuCe/TU1 laminar composite of claim 1, the gross thickness that it is characterized in that described AgCuCe/TU1 laminar composite final products is at 0.25 ± 0.005mm, and the overall silver content of composite is 2%～5%.
4, a kind of preparation method of AgCuCe/TU1 laminar composite, it is characterized in that: first before compound answering layer and matrix through surface treatment, slot at the TU1 layer again, the AgCuCe alloy is mounted in the groove, at room temperature use composite rolling mill rolling compound then, through follow-up diffusion annealing process and precision rolling, preparation AgCuCe/TU1 laminar composite.
5, according to the preparation method of the described AgCuCe/TU1 laminar composite of claim 4, it is characterized in that described surface treatment is: respectively TU1 matrix and the multiple layer of AgCuCe are carried out surface treatment with rotation steel brush method before the composite rolling, the AgCuCe layer is inlayed on the part surface that is compounded in the TU1 layer.
6, according to the preparation method of the described AgCuCe/TU1 laminar composite of claim 4, it is characterized in that under the described room temperature with the rolling compound first passage rolling reduction of composite rolling mill being 70%～80%, composite rolling power is 25T～60T.
7, according to the preparation method of the described AgCuCe/TU1 laminar composite of claim 4, it is characterized in that described composite rolling mill adopts curved rod of hydraulic pressure and circulating cooling system, guarantee the precision of composite rolling, roller temperature should remain on 20 ℃～40 ℃ in the composite rolling process.
8, according to the preparation method of the described AgCuCe/TU1 laminar composite of claim 4, it is characterized in that described follow-up diffusion annealing process is: carry out diffusion annealing with continuous bright annealing furnace and handle, annealing temperature is 600 ℃～700 ℃, and annealing time is 3min～5min.
9,, it is characterized in that the pass deformation of described precision rolling is controlled at 2%～20%, rolling 8 times according to the preparation method of the described AgCuCe/TU1 laminar composite of claim 4.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101704182B (en) * | 2009-11-11 | 2011-04-20 | 北京科技大学 | Cold-pressing compound forming method of noble/base metal stratified composite material parts |
| CN102039698A (en) * | 2009-10-21 | 2011-05-04 | 宝山钢铁股份有限公司 | Tri-metal material and manufacturing method thereof |
| CN102189719A (en) * | 2010-03-12 | 2011-09-21 | 上海集强金属工业有限公司 | Silver-base alloy laminated composite material and preparation method and application thereof |
| CN102610414A (en) * | 2011-12-22 | 2012-07-25 | 四川飞龙电子材料有限公司 | Manufacturing method and products of high-current contact bridge |
| CN103715586A (en) * | 2014-01-14 | 2014-04-09 | 深圳市中金岭南科技有限公司 | Method for manufacturing conductive metal connecting piece connected with PCB and connecting piece |
| CN104416004A (en) * | 2013-09-02 | 2015-03-18 | 南京利河伯合金材料有限公司 | Method for producing penetrative composite strip and penetrative composite strip produced by same |
| CN104416331A (en) * | 2013-09-02 | 2015-03-18 | 南京利河伯合金材料有限公司 | Preparation process of noble and base metal penetrating compound strip |
| CN109719467A (en) * | 2019-01-07 | 2019-05-07 | 新饰尚生活科技(深圳)有限公司 | A kind of gold contracted payment method and silver-colored pot |
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2009
- 2009-03-13 CN CN200910094221A patent/CN101544077A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102039698A (en) * | 2009-10-21 | 2011-05-04 | 宝山钢铁股份有限公司 | Tri-metal material and manufacturing method thereof |
| CN102039698B (en) * | 2009-10-21 | 2013-06-26 | 宝山钢铁股份有限公司 | Tri-metal material and manufacturing method thereof |
| CN101704182B (en) * | 2009-11-11 | 2011-04-20 | 北京科技大学 | Cold-pressing compound forming method of noble/base metal stratified composite material parts |
| CN102189719A (en) * | 2010-03-12 | 2011-09-21 | 上海集强金属工业有限公司 | Silver-base alloy laminated composite material and preparation method and application thereof |
| CN102189719B (en) * | 2010-03-12 | 2014-02-26 | 上海集强金属工业有限公司 | Silver-base alloy laminated composite material and preparation method and application thereof |
| CN102610414A (en) * | 2011-12-22 | 2012-07-25 | 四川飞龙电子材料有限公司 | Manufacturing method and products of high-current contact bridge |
| CN104416004A (en) * | 2013-09-02 | 2015-03-18 | 南京利河伯合金材料有限公司 | Method for producing penetrative composite strip and penetrative composite strip produced by same |
| CN104416331A (en) * | 2013-09-02 | 2015-03-18 | 南京利河伯合金材料有限公司 | Preparation process of noble and base metal penetrating compound strip |
| CN103715586A (en) * | 2014-01-14 | 2014-04-09 | 深圳市中金岭南科技有限公司 | Method for manufacturing conductive metal connecting piece connected with PCB and connecting piece |
| CN109719467A (en) * | 2019-01-07 | 2019-05-07 | 新饰尚生活科技(深圳)有限公司 | A kind of gold contracted payment method and silver-colored pot |
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Application publication date: 20090930 |