CN207699717U - Ultrasound-magnetic coupling control ion transport improves the corrosion device of electrode foil performance - Google Patents
Ultrasound-magnetic coupling control ion transport improves the corrosion device of electrode foil performance Download PDFInfo
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- CN207699717U CN207699717U CN201721804262.9U CN201721804262U CN207699717U CN 207699717 U CN207699717 U CN 207699717U CN 201721804262 U CN201721804262 U CN 201721804262U CN 207699717 U CN207699717 U CN 207699717U
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Abstract
Ultrasonic magnetic coupling control ion transport improves the corrosion device of electrode foil performance, belongs to electronic material technology field.Including aluminium foil, the conductive roller for supporting aluminium foil, driving roller, the etching tank for being marked with corrosive liquid, corrosive liquid circulating pump, three electrode plates；It includes driving roller in a slot that the conductive drum, which includes the outer conductive roller of two slots, the driving roller, and the aluminium foil is supported to going out corrosive liquid by conductive roller, driving roller from entering corrosive liquid；DC electromagnet is set in the etching tank, and the aluminium foil passes through between electrode plate in corrosive liquid；In the bottom arranging plate sound source of the etching tank.The mangneto eddy current effect that ultrasound cavitation effect and magnetic field generate in a liquid is coupled, and apply in the corrosion process of anode aluminium foil by introducing ultrasound and magnetic field double effect, effectively increases Cl in solution main body by it‑And corrosion product AlCl3Transmission, increase the uniformity and hair engaging aperture rate of the distribution of electrode foil surface borrosion hole, improve the specific capacitance of aluminium foil.
Description
Technical field
The utility model belongs to electronic material technology field, and in particular to a kind of electrode foil performance and specific volume of improving
Device.
Background technology
For high-pressure aluminum electrolytic capacitor, anode aluminum electric pole foil is its core component, and current research focuses primarily upon
How its specific capacitance is improved.It can be carried under normal conditions using the method for the dielectric constant for improving aluminium foil specific surface area and oxidation film
The specific capacity of high anode foil, wherein most effective approach is exactly to increase the effective ratio area of anode aluminum electric pole foil.It is general to use electricity
Chemical corrosion method processing aluminium foil improves its specific surface area, and general technological process is：Uncoiling → pretreatment → cleaning → direct current
Solution → washing → drying → etched foil causes when the first DC electrolysis corrodes anode aluminum electric pole foil in aluminium foil surface
Initial borrosion hole, this process are the key that entire etching process places, and to reach, borrosion hole pore size is reasonable, distribution density is equal
Even purpose.
Existing anode foil corrosion device, as shown in fig. 6, circulating pump（4）From etching tank（9）Bottom cycle outlet sucking is rotten
Lose liquid（8）, through flowmeter（3）From etching tank after control flow（9）Four upper angles cycle injection slots in.The electrochemistry of electrode foil
Etching process is broadly divided into two stages：Hair engaging aperture stage and reaming stage.
In the hair engaging aperture stage, in existing apparatus, Cl of the corrosive liquid in etching tank everywhere-There are a degree of differences for concentration
It is different, it is unfavorable for being thinned for foil face corrosive liquid laminar flow layer, makes to migrate to aluminium foil surface the Cl for being used for hair engaging aperture-Concentration is smaller, Bu Nengbao
Demonstrate,prove the Cl adsorbed at each pitting in foil face-The homogeneity of concentration makes the probability that spot corrosion germinates reduce, i.e., borrosion hole occupation rate reduces.
In the reaming stage, Cl in existing apparatus-And Al3+Disturbance effect and circulation it is poor, lead to Cl-It is unevenly distributed
It is even, cause the reduction of extended surface effect.With the increase of borrosion hole length, Cl-Migration resistance into hole and corrosion product AlCl3Xiang Kong
Outer migration resistance all increased, their diffusion rate is caused to decline, and the aluminium chloride of borrosion hole front end is made to reach saturation state,
Borrosion hole stops growing, and the reduction of hair engaging aperture density, borrosion hole length and the pore size for being formed by etched foil surface are inhomogenous.Subsequent
Formation process in, some too small borrosion holes can be covered by the oxidation film on surface, cause borrosion hole to close, reduce etched foil has
Specific surface area is imitated, the specific capacitance of electrode foil is reduced.
Under the conditions of existing apparatus, by taking 840 Vf chemical conversion conditions as an example, the specific volume of 110 μm of Waste Acid From Hua Cheng Foil is 0.22-0.26
μf /cm2, bending times are 24-28 times, and product is 7000-9000 h in 105 DEG C of experiment of high-temperature load times.
Utility model content
The utility model provides a kind of corrosion dress improving electrode foil performance using ultrasound-magnetic coupling control ion transport
It sets, it is therefore intended that solve corrosive liquid poor circulation, corrosive liquid intermediate ion concentration point in electrode foil corrosion device traditional at present
Cloth is uneven to cause depth of pit and size uneven, then causes the problems such as aluminium foil specific capacity is small, buckling performance is poor.
The utility model includes aluminium foil, the conductive roller for supporting aluminium foil, driving roller, the etching tank for being marked with corrosive liquid, corruption
Liquid circulating pump, three electrode plates are lost, the import of the corrosive liquid circulating pump is connect by pipeline with etching tank outlet at bottom, described
The outlet connecting pipe road of corrosive liquid circulating pump is sent to etching tank overthe openings, is set in the connecting pipe of corrosive liquid circulating-pump outlet
Set flowmeter；Conductive grillage is set above the etching tank, and each electrode plate is connected to the conduction by conducting wire respectively
On grillage, each electrode plate is suspended from naturally in the etching tank；The conductive drum includes the outer conductive roller of two slots, described
Driving roller includes driving roller in slot, and the aluminium foil is from corrosive liquid is entered to going out corrosive liquid by conductive roller, transmission
Roller supports；DC electromagnet is set in the etching tank, and the DC electromagnet is completely immersed in corrosive liquid, the direct current
Electromagnet is symmetrically arranged in the both sides of electrode plate, and the aluminium foil passes through between electrode plate in corrosive liquid；In the etching tank
Bottom arranging plate sound source.
The utility model compared with prior art, remarkable advantage：It will be surpassed by introducing ultrasound and magnetic field double effect
The mangneto eddy current effect that sound cavitation effect and magnetic field generate in a liquid is coupled, and applies to the corrosion process of anode aluminium foil
In, effectively increase Cl in solution main body-And corrosion product AlCl3Transmission, increase the uniform of electrode foil surface borrosion hole distribution
Property and hair engaging aperture rate, make depth of pit and pore size than more consistent, it is cylindrical, aluminum substrate sharpness of border be illustrated, thickness it is moderate,
The effective ratio area and bending intensity for further increasing aluminium foil, improve the specific capacitance of aluminium foil.
DC electromagnet described in the utility model is made of corrosion-proof casing, iron core, induction coil, and the induction coil is around the home
In outside the iron core, the corrosion-proof casing sealed envelope is outside the iron core, induction coil, two electrodes of the induction coil
The corrosion-proof casing is stretched out at end respectively, and two electrode tips of the induction coil are connected to corresponding direct current by conducting wire respectively
Source.The DC electromagnet of this set protects iron core and coil by corrosion-proof casing, is accessed by two electrodes of DC electromagnet
Power supply forms magnetic field, optimizes the corrosion of aluminium foil.
Plate sound source described in the utility model is made of multiple ultrasonic transducers, sealing plate body, and the plate sound source covering is entire
Corrode groove bottom；Each ultrasonic transducer is placed in the sealing plate body.By be arranged multiple uniformly distributed ultrasonic transducers and
The entire corrosion groove bottom of plate body covering is sealed, ensure that the covering surface of ultrasonic wave and ultrasonic wave are spent.
Each ultrasonic transducer of the utility model is evenly arranged on the plate sound source working face.Ultrasonic transducer and corrosive liquid
Contact surface it is big, ensure ultrasonic effect.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of the utility model；
Fig. 2 is the structural schematic diagram of DC electromagnet in Fig. 1.
Fig. 3 is the vertical view of DC electromagnet in Fig. 2.
Fig. 4 is the dimensional structure diagram of plate sound source in the utility model.
Fig. 5 is a dimensional view of plate sound source in the utility model
Fig. 6 is the corrosion device structural schematic diagram of electrode foil in the prior art.
Specific implementation mode
As shown in Figure 1, this ultrasound-magnetic coupling control ion transport improves the corrosion device of electrode foil performance, including aluminium foil
1,4, three the conductive roller 12 of support aluminium foil 1, driving roller 11, the etching tank 9 for being marked with corrosive liquid 8, corrosive liquid circulating pump electricity
The import of pole plate 10, corrosive liquid circulating pump 4 is connect by pipeline with 9 outlet at bottom of etching tank, and the outlet of corrosive liquid circulating pump 4 connects
Take over road 2 is sent to 9 overthe openings of etching tank, and flowmeter 3 is arranged in the connecting pipe that corrosive liquid circulating pump 4 exports；Corroding
The 9 conductive grillage 16 of top setting of slot, each electrode plate 10 are connected to by conducting wire on conductive grillage 16 respectively, and each electrode plate 10 is natural
It is suspended from etching tank 9；Conductive drum 12 includes driving roller in a slot including the outer conductive roller 12 of two slots, driving roller 11
11, aluminium foil 1 from enter corrosive liquid to go out corrosive liquid by conductive roller 12, driving roller 11 support；Setting is straight in etching tank 9
Galvanic electricity magnet 7, DC electromagnet 7 are completely immersed in corrosive liquid 8, and DC electromagnet 7 is symmetrically arranged two in electrode plate 10
Side, aluminium foil 1 pass through between electrode plate 10 in corrosive liquid 8；In the bottom arranging plate sound source 5 of etching tank 9.
As shown in Figure 2,3, DC electromagnet 7 is made of corrosion-proof casing 13, iron core 14, induction coil 15, induction coil 15
It is wound on outside iron core 14,13 sealed envelope of corrosion-proof casing is outside iron core 14, induction coil 15, two electrode tips of induction coil 15
Corrosion-proof casing 13 is stretched out respectively, and two electrode tips of induction coil 15 are connected to corresponding DC power supply by conducting wire respectively.
As shown in Fig. 1,4,5, plate sound source 5 is made of multiple ultrasonic transducers 6, sealing plate body 17, and plate sound source 5 covers entirely
9 bottom surface of etching tank；Each ultrasonic transducer 6 is placed in sealing plate body 17, and is evenly arranged；Each ultrasonic transducer 6 is evenly arranged in
On 5 working face of plate sound source.
It is wherein 150 mm adjacent to the distance between electrode plate 10, the flow that flowmeter 3 controls is 5 m3/ h, plate sound source 5
On the number of ultrasonic transducer 6 be 20, the supersonic frequency of ultrasonic transducer 6 is 25 KHz, and output power is 1000 W, one
It is 500 mm to the distance between DC electromagnet, the magnetic field intensity of application is 0.8 T, and the capacity of corrosive aluminum foil reaches most at this time
It is excellent.
The present apparatus is by introducing ultrasound and magnetic field double effect, the magnetic that ultrasound cavitation effect and magnetic field are generated in a liquid
It causes eddy current effect to be coupled, and applies in the corrosion process of anode aluminium foil, electrochemical reaction can be promoted, reach raising ion
The purpose of transmission, to increase the specific capacitance of electrode foil.
（1）Ultrasound-magneto-coupling effect can reinforce mass transfer in liquid phase.The turbulence effect that ultrasound cavitation effect generates in a liquid
The mangneto eddy current effect generated in a liquid with magnetic field, can strengthen the disturbance of nearly foil face laminar flow layer, and foil face laminar flow layer is made to be thinned,
Cl in accelerated corrosion liquid-Transmission to interface increases interface Cl-Adsorbance, improve interface Cl-Effective concentration and
Foil face Cl everywhere-The homogeneity of distribution promotes spot corrosion germinating, improves the uniformity and hair engaging aperture rate of borrosion hole distribution.
（2）Ultrasound-magneto-coupling effect can reinforce ion transport and bubble hydrogen desorption inside and outside Tunnel-hole（Degassing）.Ultrasound is micro-
The microcosmic vortex convection action of jet action and magnetic field can strengthen Cl-Into Tunnel-hole and corrosion product AlCl3Transmission to outside hole
Effect improves Cl in borrosion hole-The homogeneity of concentration and reaction rate reduces local mistake to improve depth of pit homogeneity
The generation of phenomenon is lost, electrode foil performance is improved.In addition, the bubble hydrogen that borrosion hole interior wall face generates in electrolytic process can also hinder
AlCl3It transmits, since hydrogen is difficult to without charge, common electric field and ultrasound to generate it electromigration, but hydrogen is anti-
Magnetisable material can generate magnetomechanical effects using the magnetic field in the present apparatus to it（Repelled far from the higher area of magnetic field intensity
Domain）, using the difference of field strength, its acceleration is promoted to leave at the borrosion hole mouth of the hole faces Nei Jibo, reduces the hydrogen that foil face is nearby adsorbed
Gas concentration plays pressure degasification, increases reactant Cl to reach-And corrosion product AlCl3The effective road passed in and out in hole
Diameter, the homogeneity of reaction rate between the continuity and each hole of enhancing opening up hole reaction, to further increase the uniform of depth of pit
The capacitive property of property and foil.
By taking 840 Vf as an example, the capacity of the Waste Acid From Hua Cheng Foil of 110 μ m-thicks reaches 0.26-0.3 μ f/cm2, bending times 32-
36 times, 105 DEG C of experiment of high-temperature load times break through 9000-10000 h.
Claims (4)
1. ultrasound-magnetic coupling control ion transport improves the corrosion device of electrode foil performance, including aluminium foil, the conduction for supporting aluminium foil
Roller, driving roller, the etching tank for being marked with corrosive liquid, corrosive liquid circulating pump, three electrode plates, the corrosive liquid circulating pump into
Mouth is connect by pipeline with etching tank outlet at bottom, and the outlet connecting pipe road of the corrosive liquid circulating pump is sent to corrosion channel opening
Side, is arranged flowmeter in the connecting pipe of corrosive liquid circulating-pump outlet；Conductive grillage, each institute are set above the etching tank
It states electrode plate to be connected on the conductive grillage by conducting wire respectively, each electrode plate is suspended from naturally in the etching tank；Institute
It includes driving roller in a slot that state conductive drum, which include the outer conductive roller of two slots, the driving roller, and the aluminium foil is from entering
Corrosive liquid to go out corrosive liquid by conductive roller, driving roller support；It is characterized in that direct current is arranged in the etching tank
Electromagnet, the DC electromagnet are completely immersed in corrosive liquid, and the DC electromagnet is symmetrically arranged two in electrode plate
Side, the aluminium foil pass through between electrode plate in corrosive liquid；In the bottom arranging plate sound source of the etching tank.
2. ultrasound according to claim 1-magnetic coupling control ion transport improves the corrosion device of electrode foil performance, special
Sign is that the DC electromagnet is made of corrosion-proof casing, iron core, induction coil, and the induction coil is wound on the iron core
Outside, outside the iron core, induction coil, two electrode tips of the induction coil stretch out the corrosion-proof casing sealed envelope respectively
Two electrode tips of the corrosion-proof casing, the induction coil are connected to corresponding DC power supply by conducting wire respectively.
3. ultrasound according to claim 1-magnetic coupling control ion transport improves the corrosion device of electrode foil performance, special
Sign is that the plate sound source is made of multiple ultrasonic transducers, sealing plate body, the entire corrosion groove bottom of plate sound source covering；Respectively
The ultrasonic transducer is placed in the sealing plate body.
4. ultrasound according to claim 3-magnetic coupling control ion transport improves the corrosion device of electrode foil performance, special
Sign is that each ultrasonic transducer is evenly arranged on the plate sound source working face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721804262.9U CN207699717U (en) | 2017-12-21 | 2017-12-21 | Ultrasound-magnetic coupling control ion transport improves the corrosion device of electrode foil performance |
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| CN201721804262.9U CN207699717U (en) | 2017-12-21 | 2017-12-21 | Ultrasound-magnetic coupling control ion transport improves the corrosion device of electrode foil performance |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112941612A (en) * | 2021-01-25 | 2021-06-11 | 江西省万年群兴电子有限公司 | A corrosion device for improving corrode aluminium foil corrosion performance |
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2017
- 2017-12-21 CN CN201721804262.9U patent/CN207699717U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112941612A (en) * | 2021-01-25 | 2021-06-11 | 江西省万年群兴电子有限公司 | A corrosion device for improving corrode aluminium foil corrosion performance |
| CN112941612B (en) * | 2021-01-25 | 2023-03-31 | 江西省万年群兴电子有限公司 | A corrosion device for improving corrode aluminium foil corrosion performance |
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