CN107254708B - The method of two sections of cloth holes of low voltage anode aluminum foil - Google Patents
The method of two sections of cloth holes of low voltage anode aluminum foil Download PDFInfo
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- CN107254708B CN107254708B CN201710486686.3A CN201710486686A CN107254708B CN 107254708 B CN107254708 B CN 107254708B CN 201710486686 A CN201710486686 A CN 201710486686A CN 107254708 B CN107254708 B CN 107254708B
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- cloth
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- aluminium foil
- hole
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25F—PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS; APPARATUS THEREFOR
- C25F3/00—Electrolytic etching or polishing
- C25F3/02—Etching
- C25F3/04—Etching of light metals
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F1/00—Etching metallic material by chemical means
- C23F1/02—Local etching
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F1/00—Etching metallic material by chemical means
- C23F1/10—Etching compositions
- C23F1/14—Aqueous compositions
- C23F1/16—Acidic compositions
- C23F1/20—Acidic compositions for etching aluminium or alloys thereof
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25F—PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS; APPARATUS THEREFOR
- C25F3/00—Electrolytic etching or polishing
- C25F3/02—Etching
- C25F3/14—Etching locally
-
- 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
- H01G9/004—Details
- H01G9/04—Electrodes or formation of dielectric layers thereon
- H01G9/048—Electrodes or formation of dielectric layers thereon characterised by their structure
- H01G9/055—Etched foil electrodes
Abstract
The present invention relates to a kind of methods of two sections of cloth holes of low voltage anode aluminum foil.The method of two sections of cloth holes of deferred anode aluminium foil of the present invention, comprising the following steps: S1: aluminium foil is placed in hydrochloric acid and sulfuric acid mixed solution A, is applied alternating current and is carried out surface cloth hole, obtains one section of cloth hole aluminium foil；S2: one section of cloth hole aluminium foil obtained in S1 is placed in hydrochloric acid and sulfuric acid mixed solution B, is applied alternating current and is carried out supplement cloth hole；Wherein, in step S1 alternating current frequency lower than alternating current in step S2 frequency.Compared with the existing technology, the method for two sections of cloth holes of low voltage anode aluminum foil provided by the invention, avoids a cloth hole excessive, pass through two sections of cloth holes, the uniformity of cloth hole is improved, guarantees that subsequent corrosion gos deep into that surface state is consistent, effectively improves the specific volume of given voltage section anode aluminium foil.
Description
Technical field
The present invention relates to the manufacturing methods of aluminium electrolutic capacitor anode aluminium foil, more particularly to a kind of low voltage anode aluminum foil
The method of two sections of cloth holes.
Background technique
Aluminium electrolutic capacitor is a kind of energy-storage travelling wave tube for being widely used in electronic enterprises, and anode aluminium foil is aluminium electroloysis
The architectural characteristic of the important raw material of capacitor, anode aluminium foil decides the electrical property of aluminium electrolutic capacitor.
The electrolytic corrosion process of low voltage anode aluminum foil is general are as follows: aluminium foil → pre-treatment → level-one cloth hole stage → multistage is deeply
It is dry that corrosion → cleaning dechlorination process → stabilization is handled → burns piece.The main function of pre-treatment be except deluster foil surface and oil contaminant,
Impurity and oxidation film improve surface state, promote to form equally distributed point corrosion pit when the cloth pitting corrosion of aluminium foil next step；Level-one cloth
The hole stage is that the initial pitting pit-hole with certain pore size is formed in aluminium foil surface by applying alternating current；Deeply corrosion is multistage
Further be powered corrosion on the basis of initial point borrosion hole, makes to being corroded inside aluminium foil in this etch pit, due to alternating current
Positive-negative half-cycle effect, positive half cycle deeply corrodes, and negative half period aluminium hydroxide heaps, and forms special sponge corrosion layer, obtains high
Specific volume；The main function of cleaning dechlorination post-processing is then to eliminate the remaining metal impurities of aluminium foil surface, foil ash and foil surface
Chloride ion；Stabilization processing and is improved to make product have certain water resistance to be maintained at before next procedure and do not become damp and rotten
Etched foil surface film oxide promotes certain specific volume.
The dislocation on aluminium foil light foil surface, be mingled with, crystal boundary, phase boundary, composition cluster, stress are concentrated, mechanical the defects of scratching exists
Initial corrosion hair engaging aperture is easily generated under general etching condition.Because by specific etch process parameters and aluminium foil surface state
Influence, will appear the non-uniform phenomenon of corrosion hole size in many practical microcosmic corrosion structures of low-voltage aluminium foil, cause to produce
There are the defects such as specific-volume anomaly, intensity are low, specific volume is low in product, and the producer of high-end technology often obtains highest using minimum etching extent
The product of specific volume and intensity accomplishes that this point requires borrosion hole size and is evenly distributed, and does not close hole and hollow place occurs, so leading portion
Cloth hole be determine uniformity necessary condition, not only want cloth to go out uniform hole, while also requiring to the size of hole, borrosion hole
Oversized, specific surface utilization rate is low, and to be directed at specific volume low.The too small then borrosion hole of current density is too small, be easy to cause multistage exchange rotten
The merging of aperture during erosion is equally unfavorable for improving specific volume.Current all manufacturers all use the technology of one section of cloth hole, are limited to
The intensity of pre-treatment and the defect of aluminium foil original surface, often cloth hole is not ideal enough.The even hole size of the not perfect producer of technique
Control that can not be quite reasonable.
Summary of the invention
Based on this, the object of the present invention is to provide a kind of methods of two sections of cloth holes of low voltage anode aluminum foil, can be effectively controlled
The initial cloth hole of aluminium foil, not only can make cloth hole more evenly, improve specific volume, can more pass through frequency, temperature, current control hole
Size, the aluminium electrolutic capacitor that it is prepared reach different product characteristics, protrude certain specific voltage sections according to demand,
Meet the production requirement of aluminium electrolutic capacitor diversification.
The present invention is achieved by the following technical solutions:
The method of two sections of cloth holes of low voltage anode aluminum foil, comprising the following steps:
S1: aluminium foil being placed in hydrochloric solution A, is applied alternating current and is carried out surface cloth hole, obtains one section of cloth hole aluminium foil；
S2: one section of cloth hole aluminium foil obtained in S1 is placed in hydrochloric solution B, is applied alternating current and is carried out supplement cloth
Hole；
Wherein, in step S1 alternating current frequency lower than alternating current in step S2 frequency.
Further, in the step S1 solution A temperature lower than solution B in the step S2 temperature.
Further, the cloth hole time in the step S2 is less than the cloth hole time in step S1.
Further, the frequency of the alternating current in the step S1 is 11-23Hz, the frequency of the alternating current in the step S2
Rate is 17-35Hz.
Further, the solution A and solution B are hydrochloric and sulfuric acid mixed solution.
Further, the temperature of the solution A is 30-45 DEG C, and the temperature of the solution B is 40-60 DEG C.
Further, the mass fraction of hydrochloric acid is 4-20% in the solution A and solution B, and the mass fraction of sulfuric acid is equal
For 0.01-0.5%.
Further, the ratio of the cloth hole time in the step S1 and the cloth hole time in step S2 are greater than or equal to 2.
Further, the cloth hole time in the step S1 is 30-60s, and the cloth hole time in step S2 is 10-30s.
Further, it is 0.3-0.7A/cm that the alternating current in the step S1 and step S2, which is current density,2Frequency conversion hand over
Galvanic electricity.
Compared with the existing technology, beneficial effects of the present invention are as follows:
(1) method of two sections of cloth holes of low voltage anode aluminum foil provided by the invention, avoids a cloth hole excessive, passes through two sections of cloth
Hole, improves the density and dimensional homogeneity of cloth hole, and it is consistent to guarantee that surface state is goed deep into subsequent corrosion, effectively improves anode aluminium foil
Specific volume；
(2) method of two sections of cloth holes of the invention, in the first stage when cloth hole, using relatively low frequency, relatively
Low cloth hole treatment temperature and relatively long cloth hole time, the suitable hole of cloth size, then in second stage cloth hole,
Using relatively high frequency, relatively high cloth hole treatment temperature and relatively short cloth hole time, high-temperature activation chlorine
The ability of ion makes it have higher current potential and breaks up ability, so that the position of non-cloth hole in the first stage is carried out supplement cloth
Hole；Also, second stage use higher frequency, formed more crypto set cloth hole frequency, can the thinner hole of cloth, be also prevented from
It is grown on well laid hole in the first stage, and breaks up ability in conjunction with its higher current potential, effectively supplement cloth hole, fill up the first rank
Blank between Duan great Kong realizes uniform cloth hole, avoids the low caused specific volume drop of the oversized specific surface area utilization rate of cloth hole
Specific volume caused by merging during the undersized subsequent corrosion of low and cloth hole between aperture reduces；
(3) by the time of regulation first stage and second stage cloth hole, extent of corrosion is adjusted, to adjust the big of cloth hole
Small and density；The cloth hole time that the cloth hole time of second stage compares the first stage is short, pay attention to the total etching extent of two sections of cloth holes with
Total etching extent of total etching extent and the prior art after guaranteeing two sections of cloth holes is almost the same, avoids excessive cloth hole；
(4) the method through the invention can be effectively controlled the cloth hole uniformity and better control cloth hole of aluminium foil
Density and hole size, effectively improve the specific volume of the anode aluminium foil of specific voltage section, and then obtain the low pressure with specific structure
Anode aluminium foil makes aluminium electrolutic capacitor reach different product characteristics, meets the production requirement of aluminium electrolutic capacitor diversification；This
Outside, the method for present invention offer two sections of cloth holes of low voltage anode aluminum foil is easy to operate and realize.
In order to better understand and implement, the invention will now be described in detail with reference to the accompanying drawings.
Detailed description of the invention
Fig. 1 is the surface crystal phase of anode aluminium foil of the present invention by bore distribution method cloth hole described in embodiment 1 and after corroding
500 times of microscope figures；
Fig. 2 is the scanning electron of anode aluminium foil of the present invention by bore distribution method cloth hole described in embodiment 1 and after corroding
Microscopical 4000 times of figures；
Fig. 3 is the surface crystal phase of anode aluminium foil of the present invention by bore distribution method cloth hole as described in example 2 and after corroding
500 times of microscope figures；
Fig. 4 is the scanning electron of anode aluminium foil of the present invention by bore distribution method cloth hole as described in example 2 and after corroding
Microscopical 4000 times of figures；
Fig. 5 be present invention bore distribution method cloth hole described in the comparative example 1 and corrode after anode aluminium foil surface crystal phase
500 times of microscope figures；
Fig. 6 be present invention bore distribution method cloth hole described in the comparative example 1 and corrode after anode aluminium foil scanning electron
Microscopical 4000 times of figures.
Specific embodiment
The present invention provides a kind of methods of two sections of cloth holes of low voltage anode aluminum foil, comprising the following steps:
S1: aluminium foil is placed in hydrochloric acid and sulfuric acid mixed solution A, is applied alternating current and is carried out surface cloth hole, obtains one section of cloth
Hole aluminium foil；
S2: one section of cloth hole aluminium foil obtained in S1 is placed in hydrochloric acid and sulfuric acid mixed solution B, is applied alternating current and is mended
Fill cloth hole；
Wherein, in step S1 alternating current frequency lower than alternating current in step S2 frequency；It is mixed in the step S1 molten
Temperature of the temperature of liquid A lower than mixed solution B in the step S2；The cloth hole time in the step S2 is less than in step S1
The cloth hole time.
Preferably, the frequency of the alternating current in the step S1 is 11-23Hz, the frequency of the alternating current in the step S2
For 17-35Hz；The mass fraction of hydrochloric acid is 4-20% in the mixed solution A and mixed solution B, and the mass fraction of sulfuric acid is equal
For 0.01-0.5%, the temperature of the mixed solution A is 30-45 DEG C, and the temperature of the mixed solution B is 40-60 DEG C；The step
The ratio between cloth hole time in rapid S1 and the cloth hole time in step S2 are greater than or equal to 2.Friendship in the step S1 and step S2
Galvanic electricity is that current density is 0.3-0.7A/cm2Frequency-changing AC electricity.
Embodiment 1
The method of two sections of cloth holes of low voltage anode aluminum foil described in the present embodiment, comprising the following steps:
S1: it will be placed in the hydrochloric acid and sulfuric acid mixed solution A that temperature is 40 DEG C by the aluminium foil of pretreatment oil removing, apply electricity
Current density is 0.3-0.7A/cm2, frequency f1Surface cloth hole, cloth hole time t are carried out for the alternating current of 25Hz1It is 40 seconds, at cloth hole
After reason, one section of cloth hole aluminium foil is obtained；
S2: one section of cloth hole aluminium foil obtained in S1 being placed in the hydrochloric acid and sulfuric acid mixed solution B that temperature is 55 DEG C, is applied
Current density is 0.3-0.7A/cm2, frequency f2Supplement cloth hole, cloth hole time t are carried out for the alternating current of 25Hz2It is 20 seconds.
Embodiment 2
The method of two sections of cloth holes of low voltage anode aluminum foil described in the present embodiment, comprising the following steps:
S1: it will be placed in the hydrochloric acid and sulfuric acid mixed solution A that temperature is 40 DEG C by the aluminium foil of pretreatment oil removing, apply electricity
Current density is 0.3-0.7A/cm2, frequency f1Surface cloth hole, cloth hole time t are carried out for the alternating current of 25Hz1It is 40 seconds, at cloth hole
After reason, one section of cloth hole aluminium foil is obtained；
S2: one section of cloth hole aluminium foil obtained in S1 being placed in the hydrochloric acid and sulfuric acid mixed solution B that temperature is 55 DEG C, is applied
Current density is 0.3-0.7A/cm2, frequency f2Supplement cloth hole, cloth hole time t are carried out for the alternating current of 35Hz2It is 20 seconds.
Comparative example 1
Low voltage anode aluminum foil bore distribution method, the steps include: described in this comparative example
It will be placed in the hydrochloric acid and sulfuric acid mixed solution A that temperature is 40 DEG C by the aluminium foil of pretreatment oil removing, apply electric current
Density is 0.3-0.7A/cm2, frequency be 25Hz alternating current carry out surface cloth hole, the cloth hole time be 60 seconds.
Comparative example 2
The method of two sections of cloth holes of low voltage anode aluminum foil described in this comparative example, comprising the following steps:
S1: it will be placed in the hydrochloric acid and sulfuric acid mixed solution A that temperature is 40 DEG C by the aluminium foil of pretreatment oil removing, apply electricity
Current density is 0.3-0.7A/cm2, frequency f1Surface cloth hole, cloth hole time t are carried out for the alternating current of 25Hz1It is 30 seconds, at cloth hole
After reason, one section of cloth hole aluminium foil is obtained；
S2: one section of cloth hole aluminium foil obtained in S1 being placed in the hydrochloric acid and sulfuric acid mixed solution B that temperature is 55 DEG C, is applied
Current density is 0.3-0.7A/cm2, frequency f2Supplement cloth hole, cloth hole time t are carried out for the alternating current of 25Hz2It is 30 seconds.
Effect example
The aluminium foil for passing through cloth hole processing in the embodiment of the present invention 1, embodiment 2 and comparative example is equally carried out to the expansion of back segment
Pitting corrosion (multistage frequency conversion corrosion) processing, the sample after corrosion is tested, result is as follows:
Table different hole distribution method and parameter and its corresponding performance parameter
Wherein, the CV product refers to the product of the specific volume of aluminium foil and the arrival voltage of aluminium foil.
It is found that embodiments herein 1 and embodiment 2 are because the method for using two sections of cloth holes, exists first from upper table
Then the first stage suitable hole of cloth size solves the stage second, in a short time mend the position of cloth hole non-on aluminium foil
Hole, so that surface cloth hole is more evenly effective, thus, the aluminium foil that the bore distribution method of embodiment 1 and embodiment 2 obtains is through excessive erosion
Afterwards, corresponding specific volume after the aluminium foil corrosion that the bore distribution method that the specific volume of 10V and 18.4V is higher than comparative example obtains, more has
Help prepare the products such as the capacitor of larger capacity, widens the application range of low voltage anode aluminum foil.And relative to described in embodiment 1
Two sections of cloth holes method, in two sections of bore distribution methods of embodiment 2, by controlling frequency, make the specific volume of specific voltage section 18.4V
It improves, higher frequency is used in second stage, the density of cloth hole is improved, to make the cloth hole side by embodiment 2
Specific volume of the low voltage anode aluminum foil of method preparation in 10V and 18.4V is higher, and since aperture is more, the corresponding specific volume of 50V is opposite
The specific volume of the 50V of embodiment 1 is declined slightly.Also, it can be seen from comparative example 1 and comparative example 2 when the cloth hole of second stage
Between with the cloth hole time phase of first stage simultaneously as second stage cloth hole overlong time, said minuscule hole is too many, in subsequent corrosion
Stage has and hole phenomenon, and specific volume is caused to reduce.
It is by after method cloth hole described in embodiment 1, embodiment 2 and comparative example respectively please refer to Fig. 1-Fig. 6
4000 times of figures of 500 times of the surface crystal phase microscope figures through excessive erosion and scanning electron microscope.It can be seen that by comparison
The aluminium foil after bore distribution method in example, after corrosion, surface is dispersed with many hollow places, illustrates that surface corrosion is uneven, micro-
More black vertical bar shape is more obvious than the white euphotic belt on side on 500 times of figures of mirror, and hot spot is more, and clear portions are that hot spot is diluter
Area, illustrate that cloth hole is uneven.And the method for two sections of cloth holes described in embodiment 1 through the invention, by two sections of cloth holes
Aluminium foil corrosion rear surface uniform and smooth, formed substantially without hollow place, also, do not occur black line and bright line, explanation in figure
Cloth hole is uniform；The method of two sections of cloth holes as described in example 2 through the invention, by the aluminium foil of two sections of cloth holes after corrosion
Also without there is hollow place and the non-uniform phenomenon of corrosion, the hole of the cloth hole is tiny and uniform.The embodiment of the present invention 1 and reality
The aperture for applying the cloth hole of the low voltage anode aluminum foil in example 2 is 5-20nm.
For comparative example 2, two cloth hole times of front and back are identical, since the time of first segment reduces, normal cloth hole
It is also insufficient, it with regard to directly carrying out supplement cloth hole, and supplements cloth hole and extends, cause its Small Holes excessive, two sections of cloth holes are excessive, lead
The result of cause is that normal size hole is insufficient, and Small Holes are excessive, reduce the specific volume of global voltage section all.
Thus, the method for two sections of cloth holes of low voltage anode aluminum foil provided by the invention can effectively control the cloth hole of aluminium foil
Quantity, uniformity, and the size in finer control hole to a certain extent, effectively obtain the sun in different hole densities and aperture
Pole aluminium foil, improves the specific volume of low voltage anode aluminum foil, so that the anode aluminium foil for being applicable in different voltages section product is obtained, by specific
So that aluminium electrolutic capacitor is reached different product characteristics after voltage chemical conversion, meets the production requirement of aluminium electrolutic capacitor diversification.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.
Claims (7)
1. the method for two sections of cloth holes of low voltage anode aluminum foil, it is characterised in that: the following steps are included:
S1: aluminium foil being placed in hydrochloric solution A, is applied alternating current and is carried out surface cloth hole, obtains one section of cloth hole aluminium foil；
S2: one section of cloth hole aluminium foil obtained in S1 is placed in hydrochloric solution B, is applied alternating current and is carried out supplement cloth hole；
Wherein, the frequency of alternating current is lower than the frequency of alternating current in step S2 in step S1, and the temperature of solution A is lower than in step S1
The temperature of solution B in the step S2, the cloth hole time in step S2 are less than the cloth hole time in step S1；The solution A and
Solution B is hydrochloric and sulfuric acid mixed solution.
2. the method for two sections of cloth holes of low voltage anode aluminum foil according to claim 1, it is characterised in that: in the step S1
The frequency of alternating current is 11-23Hz, and the frequency of the alternating current in the step S2 is 17-35Hz.
3. the method for two sections of cloth holes of low voltage anode aluminum foil according to claim 1, it is characterised in that: the temperature of the solution A
Degree is 30-45 DEG C, and the temperature of the solution B is 40-60 DEG C.
4. the method for two sections of cloth holes of low voltage anode aluminum foil according to claim 1, it is characterised in that: the solution A and molten
The mass fraction of hydrochloric acid is 4-20% in liquid B, and the mass fraction of sulfuric acid is 0.01-0.5%.
5. the method for two sections of cloth holes of low voltage anode aluminum foil according to claim 1, it is characterised in that: in the step S1
The ratio of cloth hole time and the cloth hole time in step S2 are greater than or equal to 2.
6. the method for two sections of cloth holes of low voltage anode aluminum foil according to claim 1, it is characterised in that: in the step S1
The cloth hole time is 20-60s, and the cloth hole time in step S2 is 10-30s.
7. the method for two sections of cloth holes of low voltage anode aluminum foil according to claim 1, it is characterised in that: the step S1 and step
It is 0.3-0.7A/cm that alternating current in rapid S2, which is current density,2Frequency-changing AC electricity.
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| CN201710486686.3A CN107254708B (en) | 2017-06-23 | 2017-06-23 | The method of two sections of cloth holes of low voltage anode aluminum foil |
Applications Claiming Priority (1)
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|---|---|---|---|
| CN201710486686.3A CN107254708B (en) | 2017-06-23 | 2017-06-23 | The method of two sections of cloth holes of low voltage anode aluminum foil |
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| CN107254708B true CN107254708B (en) | 2019-01-11 |
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Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5319151A (en) * | 1976-08-06 | 1978-02-22 | Nichicon Capacitor Ltd | Method of producing aluminum foils for electrolytic capacitors |
| JPH02189912A (en) * | 1989-01-18 | 1990-07-25 | Elna Co Ltd | Manufacture of aluminum foil for electrolytic capacitor |
| CN1090687C (en) * | 1999-06-25 | 2002-09-11 | 四川大学 | Low-pressure anode aluminium foil face-expanding erosion method |
| US6620306B2 (en) * | 2000-11-29 | 2003-09-16 | Matsushita Electric Industrial Co., Ltd. | Method of manufacturing electrode foil for aluminum electrolytic capacitor and AC power supply unit |
| CN100361240C (en) * | 2004-08-20 | 2008-01-09 | 厦门大学 | Nano holing method on surface of low-voltage anode foil for aluminium electrolytic capacitor |
| CN101752095A (en) * | 2009-12-28 | 2010-06-23 | 广西贺州市桂东电子科技有限责任公司 | Method for etching holes by corroding aluminum foil |
| CN104715929B (en) * | 2013-12-15 | 2017-09-29 | 江苏荣生电子有限公司 | A kind of direct current and the middle-high voltage electrode foil manufacture method for exchanging mixing power-up hair engaging aperture |
| CN105957717B (en) * | 2016-05-26 | 2018-11-30 | 乳源县立东电子科技有限公司 | The multiple hair engaging aperture method of the multistage of mesohigh anode foils |
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2017
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