CN110340174A - A kind of production method of capacitor tantalum aluminum composite panel belt - Google Patents
A kind of production method of capacitor tantalum aluminum composite panel belt Download PDFInfo
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- CN110340174A CN110340174A CN201910627691.0A CN201910627691A CN110340174A CN 110340174 A CN110340174 A CN 110340174A CN 201910627691 A CN201910627691 A CN 201910627691A CN 110340174 A CN110340174 A CN 110340174A
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- CN
- China
- Prior art keywords
- tantalum
- composite panel
- aluminum composite
- panel belt
- tantalum aluminum
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Links
- 239000002131 composite material Substances 0.000 title claims abstract description 91
- RVSGESPTHDDNTH-UHFFFAOYSA-N alumane;tantalum Chemical compound [AlH3].[Ta] RVSGESPTHDDNTH-UHFFFAOYSA-N 0.000 title claims abstract description 78
- 239000003990 capacitor Substances 0.000 title claims abstract description 64
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 47
- 229910052715 tantalum Inorganic materials 0.000 claims abstract description 84
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims abstract description 81
- 238000000034 method Methods 0.000 claims abstract description 80
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 36
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 36
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims abstract description 34
- 229910052709 silver Inorganic materials 0.000 claims abstract description 34
- 239000004332 silver Substances 0.000 claims abstract description 34
- 239000004411 aluminium Substances 0.000 claims abstract description 28
- 238000005098 hot rolling Methods 0.000 claims abstract description 22
- 239000011248 coating agent Substances 0.000 claims abstract description 12
- 238000000576 coating method Methods 0.000 claims abstract description 12
- 239000000758 substrate Substances 0.000 claims abstract description 10
- 238000009713 electroplating Methods 0.000 claims abstract description 6
- 230000008569 process Effects 0.000 claims description 31
- 238000005097 cold rolling Methods 0.000 claims description 28
- SQGYOTSLMSWVJD-UHFFFAOYSA-N silver(1+) nitrate Chemical compound [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 claims description 24
- 239000007788 liquid Substances 0.000 claims description 23
- 238000000137 annealing Methods 0.000 claims description 20
- 230000004913 activation Effects 0.000 claims description 16
- 238000005868 electrolysis reaction Methods 0.000 claims description 16
- 238000007747 plating Methods 0.000 claims description 16
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 15
- 238000004140 cleaning Methods 0.000 claims description 15
- 238000005554 pickling Methods 0.000 claims description 15
- 230000009467 reduction Effects 0.000 claims description 15
- 229910052739 hydrogen Inorganic materials 0.000 claims description 14
- 239000001257 hydrogen Substances 0.000 claims description 14
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 13
- NNFCIKHAZHQZJG-UHFFFAOYSA-N potassium cyanide Chemical compound [K+].N#[C-] NNFCIKHAZHQZJG-UHFFFAOYSA-N 0.000 claims description 12
- 229910001961 silver nitrate Inorganic materials 0.000 claims description 12
- 239000003513 alkali Substances 0.000 claims description 10
- 238000010438 heat treatment Methods 0.000 claims description 8
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 5
- 239000002253 acid Substances 0.000 claims description 5
- 238000001994 activation Methods 0.000 claims description 5
- 238000005516 engineering process Methods 0.000 abstract description 7
- 230000008901 benefit Effects 0.000 abstract description 4
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 238000005215 recombination Methods 0.000 abstract description 3
- 230000006798 recombination Effects 0.000 abstract description 3
- 238000004134 energy conservation Methods 0.000 abstract description 2
- 239000000243 solution Substances 0.000 description 15
- 150000001875 compounds Chemical class 0.000 description 8
- 229910052751 metal Inorganic materials 0.000 description 8
- 239000002184 metal Substances 0.000 description 8
- QGJOPFRUJISHPQ-UHFFFAOYSA-N Carbon disulfide Chemical compound S=C=S QGJOPFRUJISHPQ-UHFFFAOYSA-N 0.000 description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- -1 cyanamide compound Chemical class 0.000 description 4
- CIJJJPBJUGJMME-UHFFFAOYSA-N [Ta].[Ta] Chemical compound [Ta].[Ta] CIJJJPBJUGJMME-UHFFFAOYSA-N 0.000 description 3
- 238000012512 characterization method Methods 0.000 description 3
- 229910000765 intermetallic Inorganic materials 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000005272 metallurgy Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- ZRALSGWEFCBTJO-UHFFFAOYSA-N Guanidine Chemical compound NC(N)=N ZRALSGWEFCBTJO-UHFFFAOYSA-N 0.000 description 2
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- UMGDCJDMYOKAJW-UHFFFAOYSA-N thiourea Chemical compound NC(N)=S UMGDCJDMYOKAJW-UHFFFAOYSA-N 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- CHJJGSNFBQVOTG-UHFFFAOYSA-N N-methyl-guanidine Natural products CNC(N)=N CHJJGSNFBQVOTG-UHFFFAOYSA-N 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910001570 bauxite Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- QGJOPFRUJISHPQ-NJFSPNSNSA-N carbon disulfide-14c Chemical compound S=[14C]=S QGJOPFRUJISHPQ-NJFSPNSNSA-N 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- SWSQBOPZIKWTGO-UHFFFAOYSA-N dimethylaminoamidine Natural products CN(C)C(N)=N SWSQBOPZIKWTGO-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 239000008246 gaseous mixture Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 150000002500 ions Chemical class 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
- 239000002905 metal composite material Substances 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
- MZLGASXMSKOWSE-UHFFFAOYSA-N tantalum nitride Chemical compound [Ta]#N MZLGASXMSKOWSE-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/02—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of sheets
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/16—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of other metals or alloys based thereon
- C22F1/18—High-melting or refractory metals or alloys based thereon
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D3/00—Electroplating: Baths therefor
- C25D3/02—Electroplating: Baths therefor from solutions
- C25D3/46—Electroplating: Baths therefor from solutions of silver
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/02—Electroplating of selected surface areas
- C25D5/028—Electroplating of selected surface areas one side electroplating, e.g. substrate conveyed in a bath with inhibited background plating
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/34—Pretreatment of metallic surfaces to be electroplated
- C25D5/38—Pretreatment of metallic surfaces to be electroplated of refractory metals or nickel
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
- B21B2003/001—Aluminium or its alloys
Abstract
The invention discloses a kind of capacitor production methods of tantalum aluminum composite panel belt, Step 1:, to its electroplating surface silver, obtaining the tantalum strip blank with silver coating for after the pretreatment of tantalum strip；Step 2: the tantalum strip blank of silver-plated side and aluminium sheet substrate are carried out method hot rolling, tantalum aluminum composite panel belt is obtained；Step 3: obtaining capacitor tantalum aluminum composite panel belt after the thermally treated technique of tantalum aluminum composite panel belt.The present invention has many advantages, such as that brief production technology, energy conservation and environmental protection, product combined strength bination is big, recombination rate is high.
Description
Technical field
The invention belongs to tantalum aluminum composite panel belt fields, are related to a kind of production method more particularly to one of tantalum aluminum composite panel belt
The production method of kind capacitor tantalum aluminum composite panel belt.
Background technique
The chemical stability of tantalum is good, and the corrosion resistance of tantalum capacitor is very strong, can keep stable electricity under various environmental conditions
Performance and good physical and chemical performance.The resistivity of tantalum is high, can reach 7.5 × 1012Ω·cm；Dielectric constant is big, is 27.6,
Leakage current is small.Tantalum has valve metal property, and the dense oxidation film of Surface Creation has unilateral conduction, is suitable for production capacitor
Device.The capacity of tantalum capacitor is big, small in size, and capacitance is 3 times of aluminum capacitor, and volume ratio aluminum capacitor is much smaller.
The operating temperature range of tantalum capacitor is -80-200 DEG C, can satisfy different temperature requirements.In addition to this, tantalum capacitor also has
Stiff stability and heat-resistant quality become a kind of very high material of reliability in electronics industry, are widely used in needing to guarantee high
The military technology and high-tech sector of reliability.Aluminium has good conductive, heating conduction, and for tantalum compared with aluminium, tantalum resources are short
It lacks, bauxite resource is relatively abundant, and aluminium specific gravity is smaller, cheap.Tantalum and aluminum composite metal plate are one kind using aluminium as matrix, and outer layer is multiple
Close the bimetallic plates of tantalum.It is by the resource of the high quality electric conductivity of aluminium, low cost, with the high chemical stability of tantalum, lower
The capacitor material that is complex as a whole of contact resistance.Aluminium and tantalum composite metal band, have concentrated tantalum aluminium respectively advantage, with tantalum aluminium
Composite metal band replace tantalum strip, Aluminum sheets plate tantalum technique, be widely used in computer, mobile communication, space flight and aviation space flight,
The fields such as defence and military, instrument and meter, household electrical appliance are the developing direction and research hotspot of current metal new material.
Currently, the production of tantalum and aluminum composite metal strip, main compound using composite algorithm, solid-liquid composite algorithm and liquid liquid is consolidated
Method.Wherein, diffusion welding (DW) connection pressure is small, does not generate macroscopical plastic deformation, and bond strength is lower, the essence for being suitble to postwelding not reprocess
Close part.Explosion composite method noise is big, security risk is big, production efficiency is low, is unfavorable for accurately controlling.Rolling casting bonding method temperature
Height, oxidizable, bimetallic fusing point is different, Yi Fasheng melting loss.Squeeze hubbing continuity it is poor, be only applicable to metal composite pipe,
Stick, wire rod.
Summary of the invention
The present invention provides a kind of production method of capacitor tantalum aluminum composite panel belt, to overcome the deficiencies of existing technologies.
To achieve the above object, the present invention provides a kind of production method of capacitor tantalum aluminum composite panel belt, Step 1: will
After the pretreatment of tantalum strip, to its electroplating surface silver, the tantalum strip blank with silver coating is obtained；Step 2: by the tantalum of silver-plated side
Strip blank and aluminium sheet substrate carry out method hot rolling, obtain tantalum aluminum composite panel belt；Step 3: the thermally treated work of tantalum aluminum composite panel belt
After skill, capacitor tantalum aluminum composite panel belt is obtained, can be used to the tantalum aluminum composite panel belt of production capacitor.
Wherein, in step 2, tantalum strip is only silver-plated in side, the side and aluminium sheet substrate method hot rolling.Aluminium sheet substrate is 1-6
It is alloy.
Further, the present invention provides a kind of production method of capacitor tantalum aluminum composite panel belt, can also have such
Feature: where in step 1, the technique of electrosilvering are as follows: pretreated tantalum strip is immersed in silver plating liquid and is electroplated, it is silver-plated
Liquid is the solution for including silver nitrate and potassium cyanide.
Further, the present invention provides a kind of production method of capacitor tantalum aluminum composite panel belt, can also have such
Feature: where in step 1, in the technique of electrosilvering, voltage 380V, electric current 500-1000A, current density 0.2A/
dm2~5A/dm2, silver-plated temperature is 280~300 DEG C.
Further, the present invention provides a kind of production method of capacitor tantalum aluminum composite panel belt, can also have such
Feature: where in step 1, in the technique of electrosilvering, in silver plating liquid, the concentration of silver nitrate is 35~55g/L, potassium cyanide it is dense
Degree is 55~75g/L.
Further, the present invention provides a kind of production method of capacitor tantalum aluminum composite panel belt, can also have such
Feature: where further include brightener in silver plating liquid in the technique of electrosilvering, the concentration of brightener is 35~40g/ in step 1
L。
Brightener can make silver coating be easy to polish, and have good thermally conductive, conductive and welding performance.Brightener can be with
For carbon disulfide, after carbon disulfide is added in silver plating liquid, react generation substitution with the CN mono- in former silver plating liquid to carbon disulfide and urinate
Certain compounds in element, thiocarbamide, guanidine, sulfide, cyanamide compound and other kind of sulfide, these compounds can have brightener
Effect.Further, the present invention provides a kind of production method of capacitor tantalum aluminum composite panel belt, can also have such spy
Sign: where in step 2, in method hot rolling technique, the temperature of method hot rolling is 250~450 DEG C, and mill speed is 5~10m/
Min, the first pass reduction of method hot rolling are 25~50%.
Further, the present invention provides a kind of production method of capacitor tantalum aluminum composite panel belt, can also have such
Feature: where in step 3, heat treatment process is followed successively by annealing and cold-rolling process.
Further, the present invention provides a kind of production method of capacitor tantalum aluminum composite panel belt, can also have such
Feature: where in step 3, in annealing process, 350~450 DEG C of the temperature of annealing, time of annealing is 8~
15h。
Further, the present invention provides a kind of production method of capacitor tantalum aluminum composite panel belt, can also have such
Feature: where in step 3, in cold-rolling process, cold rolling temperature is 150~250 DEG C, and cold rolling speed is 100m/min, cold rolling
First time working modulus be 20~35%.
Further, the present invention provides a kind of production method of capacitor tantalum aluminum composite panel belt, can also have such
Feature: where in step 1, tantalum strip with a thickness of 0.3~0.6mm, the silver coating of tantalum strip side with a thickness of 2~6 μm；
In step 2, aluminium sheet substrate with a thickness of 8-12mm；In step 3, the capacitor tantalum aluminum composite panel belt of acquisition with a thickness of
2.0mm。
Further, the present invention provides a kind of production method of capacitor tantalum aluminum composite panel belt, can also have such
Feature: where in step 1, pretreatment includes that soda acid cleaning, electrolysis, activation and hydrogen heat reduction treatment, with degreasing, deoxidation
Change.
Further, the present invention provides a kind of production method of capacitor tantalum aluminum composite panel belt, can also have such
Feature: where in step 1, pretreated detailed process are as follows: alkali cleaning, then pickling again, in pickling first are carried out to tantalum strip
Meanwhile using tantalum strip as the groove body of anode, electrolytic cell being cathode, on-load voltage carries out electrolysis, activation to tantalum strip, finally carries out
Hydrogen heats reduction treatment.
Wherein, part of the surface tantalum enters solution with ion when tantalum strip continues through in the electrolytic solution, can further remove
Aging tantalum surface metal layer.
Hydrogen heating reduction treatment refers to controls nitrogen and hydrogen with two sets of current stabilization/stable-pressure devices respectively, is first blown with nitrogen
Tantalum strip after sweeping electrolysis, activation, then heats up, then logical hydrogen, after reduction, stops heating, continues logical nitrogen and hydrogen
Gaseous mixture obtains pretreated tantalum strip until tantalum strip is down to room temperature.
Further, the present invention provides a kind of production method of capacitor tantalum aluminum composite panel belt, can also have such
Feature: where alkali cleaning processing in, use mass concentration for 15% NaOH solution；In pickling processes, use mass fraction for
25% H2SO4Solution.
Further, the present invention provides a kind of production method of capacitor tantalum aluminum composite panel belt, can also have such
Feature: where in electrolysis, activation, on-load voltage 6V.
The beneficial effects of the present invention are: the present invention provides a kind of production method of capacitor tantalum aluminum composite panel belt, phase
Compared with the production technology of traditional tantalum aluminum composite panel belt such as composite algorithm, solid-liquid composite algorithm and liquid liquid composite algorithm admittedly, this producer
Method simplifies production technology.Secondly, this method compares the high yield rate of other methods, energy-saving material-saving consumption reduction, and other methods are such as
Not environmentally, all processes of this production technology are environmentally friendly for explosion method.In addition, this method is suitable for the aluminium alloy and tantalum of the various trades mark
Plate it is compound, aluminium alloy and different plates including different series are wide, the kind of resulting capacitor tantalum aluminum composite panel belt and
Specification is more, and application range is big.In addition, this method can produce the tantalum aluminum composite panel belt being made with a thickness of about 2.0mm, tantalum aluminum composite plate
Tantalum can account for the 2~3% of total volume in band, and the combined strength bination of capacitor tantalum aluminum composite panel belt is big (>=12N/mm), tantalum aluminium
Two kinds of clad metal sheets are not easily stripped, good percentage elongation (>=12%), and recombination rate is up to 100%, and this capacitor tantalum aluminum composite plate
The electrical and thermal conductivity performance of band is good, and quality is reliable and stable, can be widely applied to the fields such as capacitor, radiator for mobile phone, economic benefit
Significantly.The present invention has many advantages, such as that brief production technology, energy conservation and environmental protection, product combined strength bination is big, recombination rate is high.
Detailed description of the invention
Fig. 1 is the SEM figure of the tantalum aluminium compound cross-section of the tantalum aluminum composite panel belt of embodiment 1；
Fig. 2 is the SEM figure of the tantalum aluminium compound cross-section of the tantalum aluminum composite panel belt of embodiment 2；
Fig. 3 is the SEM figure of the tantalum aluminium compound cross-section of the tantalum aluminum composite panel belt of embodiment 3.
Specific embodiment
Below in conjunction with specific embodiment, the invention will be further described.
Embodiment 1
The present embodiment provides a kind of capacitor production methods of tantalum aluminum composite panel belt:
Step 1:, to its electroplating surface silver, obtaining the tantalum strip blank with silver coating for after the pretreatment of tantalum strip.Its
In, pretreatment includes that soda acid cleaning, electrolysis, activation and hydrogen heat reduction treatment.
Detailed process are as follows: alkali cleaning, then pickling again, while pickling, with tantalum plate first are carried out to the tantalum strip of 0.3mm thickness
It is cathode with the groove body for being anode, electrolytic cell, on-load voltage carries out electrolysis, activation to tantalum strip, finally carries out hydrogen heating also
Original place reason.Then, pretreated tantalum strip is immersed in silver plating liquid and is electroplated, obtain the silver coating with 0.003mm thickness
Tantalum strip blank.Silver plating liquid is the solution of silver nitrate, potassium cyanide and brightener.
Wherein, alkali cleaning processing in, use mass concentration for 15% NaOH solution.In pickling processes, using mass fraction
For 25% H2SO4Solution.In electrolysis, activation, on-load voltage 6V.
In silver plating liquid, the concentration of silver nitrate is 35g/L, and the concentration of potassium cyanide is 55g/L, and the concentration of brightener is 35g/L.
In the technique of electrosilvering, voltage 380V, electric current 500A, current density 0.2A/dm2, silver-plated temperature is 280 DEG C.
Step 2: the tantalum strip blank of silver-plated side and the aluminium sheet substrate of 8mm thickness are carried out method hot rolling.Wherein, hot rolling is multiple
It closes in technique, the temperature of method hot rolling is 250 DEG C, mill speed 6m/min, and the first pass reduction of method hot rolling is
25%.Obtain the tantalum aluminum composite panel belt that overall thickness is 6.225mm.
Electronic Speculum characterization is scanned to the tantalum aluminum composite panel belt, SEM figure is as shown in Figure 1.In Fig. 1, left side is tantalum, right side
For aluminium, centre is intermetallic compound.As seen from the figure, realize that good metallurgy is multiple between tantalum aluminum composite panel belt tantalum layer and aluminium layer
It closes.The compound of tantalum aluminium is slightly 65Mpa.
Step 3: the tantalum aluminum composite panel belt that step 2 obtains successively is carried out annealing and cold-rolling process processing.Wherein, it is moving back
In fire process, 350 DEG C of the temperature of annealing, the time of annealing is 15h.In cold-rolling process, cold rolling temperature 150
DEG C, cold rolling speed is 100m/min, and the first time working modulus of cold rolling is 20%.
After annealing and cold-rolling process processing, that is, obtain the capacitor tantalum aluminum composite panel belt of 2.0mm thickness.The capacitor tantalum
Tantalum can account for the 2% of total volume in aluminum composite panel belt.The elongation percentage of the capacitor tantalum aluminum composite panel belt is 12%, combined strength bination
For 12N/mm, conductivity is 4.5 × 107S/m, tensile strength 235MPa.
Embodiment 2
The present embodiment provides a kind of capacitor production methods of tantalum aluminum composite panel belt:
Step 1:, to its electroplating surface silver, obtaining the tantalum strip blank with silver coating for after the pretreatment of tantalum strip.Its
In, pretreatment includes that soda acid cleaning, electrolysis, activation and hydrogen heat reduction treatment.
Detailed process are as follows: alkali cleaning, then pickling again, while pickling, with tantalum plate first are carried out to the tantalum strip of 0.5mm thickness
It is cathode with the groove body for being anode, electrolytic cell, on-load voltage carries out electrolysis, activation to tantalum strip, finally carries out hydrogen heating also
Original place reason.Then, pretreated tantalum strip is immersed in silver plating liquid and is electroplated, obtain the silver coating with 0.004mm thickness
Tantalum strip blank.Silver plating liquid is the solution of silver nitrate, potassium cyanide and brightener.
Wherein, alkali cleaning processing in, use mass concentration for 15% NaOH solution.In pickling processes, using mass fraction
For 25% H2SO4Solution.In electrolysis, activation, on-load voltage 6V.
In the solution of silver nitrate and potassium cyanide, the concentration of silver nitrate is 45g/L, and the concentration of potassium cyanide is 65g/L, brightener
Concentration be 38g/L.In the technique of electrosilvering, voltage 380V, electric current 800A, current density 3A/dm2, silver-plated temperature
Degree is 290 DEG C.
Step 2: the tantalum strip blank of silver-plated side and the aluminium sheet substrate of 10mm thickness are carried out method hot rolling.Wherein, hot rolling is multiple
It closes in technique, the temperature of method hot rolling is 350 DEG C, mill speed 8m/min, and the first pass reduction of method hot rolling is
30%.Obtain the tantalum aluminum composite panel belt that overall thickness is 7.35mm.
Electronic Speculum characterization is scanned to the tantalum aluminum composite panel belt, SEM figure is as shown in Figure 2.In Fig. 2, left side is tantalum, right side
For aluminium, centre is intermetallic compound.As seen from the figure, realize that good metallurgy is multiple between tantalum aluminum composite panel belt tantalum layer and aluminium layer
It closes.The compound of tantalum aluminium is slightly 60Mpa.
Step 3: the tantalum aluminum composite panel belt that step 2 obtains successively is carried out annealing and cold-rolling process processing.Wherein, it is moving back
In fire process, 400 DEG C of the temperature of annealing, the time of annealing is 12h.In cold-rolling process, cold rolling temperature 200
DEG C, cold rolling speed is 100m/min, and the first time working modulus of cold rolling is 30%.
After annealing and cold-rolling process processing, that is, obtain the capacitor tantalum aluminum composite panel belt of 2.0mm thickness.The capacitor tantalum
Tantalum can account for the 2.5% of total volume in aluminum composite panel belt.The elongation percentage of the capacitor tantalum aluminum composite panel belt is 13%, compound strong
Degree is 13N/mm, and conductivity is 4.8 × 107S/m, tensile strength 242MPa.
Embodiment 3
The present embodiment provides a kind of capacitor production methods of tantalum aluminum composite panel belt:
Step 1:, to its electroplating surface silver, obtaining the tantalum strip blank with silver coating for after the pretreatment of tantalum strip.Its
In, pretreatment includes that soda acid cleaning, electrolysis, activation and hydrogen heat reduction treatment.
Detailed process are as follows: alkali cleaning, then pickling again, while pickling, with tantalum plate first are carried out to the tantalum strip of 0.6mm thickness
It is cathode with the groove body for being anode, electrolytic cell, on-load voltage carries out electrolysis, activation to tantalum strip, finally carries out hydrogen heating also
Original place reason.Then, pretreated tantalum strip is immersed in silver plating liquid and is electroplated, obtain the silver coating with 0.005mm thickness
Tantalum strip blank.Silver plating liquid is the solution of silver nitrate, potassium cyanide and brightener.
Wherein, alkali cleaning processing in, use mass concentration for 15% NaOH solution.In pickling processes, using mass fraction
For 25% H2SO4Solution.In electrolysis, activation, on-load voltage 6V.
In the solution of silver nitrate and potassium cyanide, the concentration of silver nitrate is 55g/L, and the concentration of potassium cyanide is 75g/L, brightener
Concentration be 40g/L.In the technique of electrosilvering, voltage 380V, electric current 1000A, current density 5A/dm2, silver-plated temperature
Degree is 300 DEG C.
Step 2: the tantalum strip blank of silver-plated side and the aluminium sheet substrate of 12mm thickness are carried out method hot rolling.Wherein, hot rolling is multiple
It closes in technique, the temperature of method hot rolling is 450 DEG C, mill speed 10m/min, and the first pass reduction of method hot rolling is
50%.Obtain the tantalum aluminum composite panel belt that overall thickness is 6.3mm.
Electronic Speculum characterization is scanned to the tantalum aluminum composite panel belt, SEM figure is as shown in Figure 3.In Fig. 3, left side is tantalum, right side
For aluminium, centre is intermetallic compound.As seen from the figure, realize that good metallurgy is multiple between tantalum aluminum composite panel belt tantalum layer and aluminium layer
It closes.The compound of tantalum aluminium is slightly 70Mpa.
Step 3: the tantalum aluminum composite panel belt that step 2 obtains successively is carried out annealing and cold-rolling process processing.Wherein, it is moving back
In fire process, 450 DEG C of the temperature of annealing, the time of annealing is 8h.In cold-rolling process, cold rolling temperature is 250 DEG C,
Cold rolling speed is 100m/min, and the first time working modulus of cold rolling is 20%.
After annealing and cold-rolling process processing, that is, obtain the capacitor tantalum aluminum composite panel belt of 2.0mm thickness.The capacitor tantalum
Tantalum can account for the 3% of total volume in aluminum composite panel belt.The elongation percentage of the capacitor tantalum aluminum composite panel belt is 13%, combined strength bination
For 14N/mm, conductivity is 4.9 × 107S/m, tensile strength 245MPa.
Claims (14)
1. a kind of capacitor production method of tantalum aluminum composite panel belt, it is characterised in that:
Step 1:, to its electroplating surface silver, obtaining the tantalum strip blank with silver coating for after the pretreatment of tantalum strip；
Step 2: the tantalum strip blank of silver-plated side and aluminium sheet substrate are carried out method hot rolling, tantalum aluminum composite panel belt is obtained；
Step 3: obtaining capacitor tantalum aluminum composite panel belt after the thermally treated technique of tantalum aluminum composite panel belt.
2. the capacitor according to claim 1 production method of tantalum aluminum composite panel belt, it is characterised in that:
Wherein, in step 1, the technique of electrosilvering are as follows: pretreated tantalum strip is immersed in silver plating liquid and is electroplated, it is described
Silver plating liquid is the solution for including silver nitrate and potassium cyanide.
3. the capacitor according to claim 1 or 2 production method of tantalum aluminum composite panel belt, it is characterised in that:
Wherein, in step 1, in the technique of electrosilvering, voltage 380V, electric current 500-1000A, current density 0.2A/dm2
~5A/dm2, silver-plated temperature is 280~300 DEG C.
4. the capacitor according to claim 1 or 2 production method of tantalum aluminum composite panel belt, it is characterised in that:
Wherein, in step 1, in the technique of electrosilvering, in the silver plating liquid, the concentration of silver nitrate is 35~55g/L, potassium cyanide
Concentration be 55~75g/L.
5. the capacitor according to claim 1 or 2 production method of tantalum aluminum composite panel belt, it is characterised in that:
It wherein, further include brightener in the silver plating liquid in the technique of electrosilvering in step 1, the concentration of brightener is 35~
40g/L。
6. the capacitor according to claim 1 production method of tantalum aluminum composite panel belt, it is characterised in that:
Wherein, in step 2, in method hot rolling technique, the temperature of method hot rolling is 250~450 DEG C, and mill speed is 5~10m/
Min, the first pass reduction of method hot rolling are 25~50%.
7. the capacitor according to claim 1 production method of tantalum aluminum composite panel belt, it is characterised in that:
Wherein, in step 3, the heat treatment process is followed successively by annealing and cold-rolling process.
8. the capacitor according to claim 7 production method of tantalum aluminum composite panel belt, it is characterised in that:
Wherein, in step 3, in annealing process, 350~450 DEG C of the temperature of annealing, time of annealing is 8~
15h。
9. the capacitor according to claim 7 production method of tantalum aluminum composite panel belt, it is characterised in that:
Wherein, in step 3, in cold-rolling process, cold rolling temperature is 150~250 DEG C, and cold rolling speed is 100m/min, cold rolling
First time working modulus is 20~35%.
10. the capacitor according to claim 1 production method of tantalum aluminum composite panel belt, it is characterised in that:
Wherein, in step 1, the tantalum strip with a thickness of 0.3~0.6mm, the silver coating of tantalum strip side with a thickness of 2~6
μm；
In step 2, the aluminium sheet substrate with a thickness of 8-12mm；
In step 3, the capacitor of acquisition is with tantalum aluminum composite panel belt with a thickness of 2.0mm.
11. the capacitor according to claim 1 production method of tantalum aluminum composite panel belt, it is characterised in that:
Wherein, in step 1, the pretreatment includes that soda acid cleaning, electrolysis, activation and hydrogen heat reduction treatment.
12. the capacitor according to claim 11 production method of tantalum aluminum composite panel belt, it is characterised in that:
Wherein, in step 1, the pretreated detailed process are as follows: first to the tantalum strip carry out alkali cleaning, then pickling again,
It is cathode by the groove body of anode, electrolytic cell of tantalum strip while pickling, on-load voltage carries out electrolysis, activation to tantalum strip, most
Hydrogen is carried out afterwards heats reduction treatment.
13. the capacitor according to claim 12 production method of tantalum aluminum composite panel belt, it is characterised in that:
Wherein, in alkali cleaning processing, use mass concentration for 15% NaOH solution；
In the pickling processes, use mass fraction for 25% H2SO4Solution.
14. the capacitor according to claim 12 production method of tantalum aluminum composite panel belt, it is characterised in that:
Wherein, in the electrolysis, activation, on-load voltage 6V.
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| CN113733685A (en) * | 2021-09-06 | 2021-12-03 | 华北电力大学 | Light high-strength Mg-Al-Ta composite metal plate and roll forming method thereof |
| CN114807790A (en) * | 2022-04-25 | 2022-07-29 | 银邦金属复合材料股份有限公司 | Radiation-resistant layered composite material for satellite devices and preparation method thereof |
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