KR960003940B1 - Aluminium alloy film for the electrolytic capacitor negative pole - Google Patents
Aluminium alloy film for the electrolytic capacitor negative pole Download PDFInfo
- Publication number
- KR960003940B1 KR960003940B1 KR1019870003564A KR870003564A KR960003940B1 KR 960003940 B1 KR960003940 B1 KR 960003940B1 KR 1019870003564 A KR1019870003564 A KR 1019870003564A KR 870003564 A KR870003564 A KR 870003564A KR 960003940 B1 KR960003940 B1 KR 960003940B1
- Authority
- KR
- South Korea
- Prior art keywords
- electrolytic capacitor
- foil
- molybdenum
- negative pole
- copper
- Prior art date
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- 229910000838 Al alloy Inorganic materials 0.000 title claims description 11
- 239000003990 capacitor Substances 0.000 title claims description 7
- 239000011888 foil Substances 0.000 claims description 29
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 14
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 13
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 13
- 229910052750 molybdenum Inorganic materials 0.000 claims description 13
- 239000011733 molybdenum Substances 0.000 claims description 13
- 229910052802 copper Inorganic materials 0.000 claims description 12
- 239000010949 copper Substances 0.000 claims description 12
- 239000010941 cobalt Substances 0.000 claims description 7
- 229910017052 cobalt Inorganic materials 0.000 claims description 7
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 7
- 229910052759 nickel Inorganic materials 0.000 claims description 7
- 238000005530 etching Methods 0.000 description 7
- 150000001875 compounds Chemical class 0.000 description 5
- 229910045601 alloy Inorganic materials 0.000 description 4
- 239000000956 alloy Substances 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000011159 matrix material Substances 0.000 description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 1
- 239000004327 boric acid Substances 0.000 description 1
- 238000003486 chemical etching Methods 0.000 description 1
- 239000013626 chemical specie Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000003621 irrigation water Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- WYXIGTJNYDDFFH-UHFFFAOYSA-Q triazanium;borate Chemical compound [NH4+].[NH4+].[NH4+].[O-]B([O-])[O-] WYXIGTJNYDDFFH-UHFFFAOYSA-Q 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-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
- H01G9/02—Diaphragms; Separators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-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
- H01G9/042—Electrodes or formation of dielectric layers thereon characterised by the material
- H01G9/0425—Electrodes or formation of dielectric layers thereon characterised by the material specially adapted for cathode
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- ing And Chemical Polishing (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Abstract
내용 없음.No content.
Description
본 발명은 전해콘덴서 음극용 알루미늄합금박에 관한 것이다.The present invention relates to an aluminum alloy foil for an electrolytic capacitor cathode.
전해 콘덴서용 알루미늄합금박(이하 간단히 음금박이라 칭함)으로서는 화학에칭등과 같은 에칭에 의하여 표면적을 용이하게 확대하여 얻는 것으로 동을 0.1∼0.5중량% 첨가한 알루미늄합금박이 널리 사용되고 있다(특공소 44-25016호 공보).As the aluminum alloy foil for electrolytic capacitors (hereinafter simply referred to as tin foil), an aluminum alloy foil containing 0.1 to 0.5% by weight of copper is widely used by easily expanding the surface area by etching such as chemical etching. -25016 publication).
최근, 양극박의 정전용량이 현저하게 향상하였으나, 음극박의 용량향상도 필요하게 되었고, 보다 균일하고 미세한 에칭이 가능한 알루미늄합금박의 출현이 요망되고 있다. 이와 같은 조건을 충족하는 데에는 에칭 조작시의 피팅(pitting)개시점을 다수 가짐과 함께 박강도가 우수할 것이 필요하다. 그러나, 현재로서는 이와같은 기술적요구에 충분히 따를 수 있는 알루미늄합금박은 실용화되어 있지는 않다.In recent years, although the capacitance of the positive electrode foil has been remarkably improved, the capacity improvement of the negative electrode foil is also required, and the appearance of an aluminum alloy foil capable of more uniform and fine etching is desired. In order to satisfy such conditions, it is necessary to have a large number of the starting point of fitting during the etching operation and to have excellent thinning strength. However, at present, aluminum alloy foil which can fully comply with such technical requirements is not put to practical use.
본 발명에서는 상기와 같은 현행기술의 문제점을 감안하여 여러 가지 실험 및 연구를 거듭한 결과, 특정량의 동과 몰리브덴을 함유하는 알루미늄합금박이 음극박에서의 문제점을 실질적으로 해소 혹은 대폭 경감할 수 있음을 발견하였다. 즉, 본 발명은 동 0.1∼1.0중량% 및 몰리브덴 0.005~1.0중량%를 함유하는 전해콘덴서 음극용 알루미늄합금박을 제공하는 것이다.In the present invention, as a result of various experiments and studies in view of the problems of the current technology as described above, the aluminum alloy foil containing a certain amount of copper and molybdenum can substantially solve or greatly reduce the problems in the cathode foil. Found. That is, this invention provides the aluminum alloy foil for electrolytic capacitor negative electrodes containing 0.1-1.0 weight% of copper and 0.005-1.0 weight% of molybdenum.
그리고 본 발명의 연구에 따르면, 동 및 몰리브덴과 함께 코발트 및 니켈중 적어도 1종을 함유하는 경우에는 피팅개시점이 보다 증대하고, 음극박으로서의 용량도 증대함을 발견하였다.In addition, according to the study of the present invention, when copper and molybdenum together contain at least one of cobalt and nickel, it was found that the fitting starting point is increased and the capacity as the cathode foil is also increased.
즉, 본 발명은 코발트 및 니켈중 적어도 1종이 0.005∼1.0중량%, 동 0.1∼1.0중량% 및 몰리브덴 0.005∼1.0중량%를 함유하는 전해콘덴서 음극용 알루미늄합금박을 제공하기 위한 것이기도 하다.That is, the present invention is also intended to provide an aluminum alloy foil for an electrolytic capacitor negative electrode containing at least one of cobalt and nickel containing 0.005 to 1.0 wt%, copper 0.1 to 1.0 wt%, and molybdenum 0.005 to 1.0 wt%.
본 발명에서는 동과 몰리브덴과, 혹은 이와 코발트 및/또는 니켈이 상승적으로 작용하여 현저한 효과를 일으키므로 각 성분의 함량과 효과와의 관계를 개별적으로 논하는 것이 반드시 타당하지는 않으나, 각 성분 함유량의 근거를 굳이 나타내면 다음과 같다.In the present invention, since copper and molybdenum, or cobalt and / or nickel act synergistically to produce a remarkable effect, it is not necessarily valid to separately discuss the relationship between the content of each component and the effect, but the basis of the content of each component If you dare to appear as follows.
우선 알루미늄의 몰리브덴 함유량을 0.005∼1.0중량%, 바람직하기는 0.01∼0.3%로 하므로써 미세하고 다수의 Al-Mo화합물이 메트릭스중에 분산된 조직을 얻을 수 있다. 이 Al-Mo화합물은 전위적으로 상당히 소중하고 메트릭스와의 사이에 큰 전위차를 발생하므로 에칭시에 피팅개시점으로 작용하여 미세한 고밀도의 피트형성을 가능케 한다. 또, 동함유량을 0.1∼1.0중량%로 하므로써 메트릭스의 부식성이 높아짐과 동시에 보다 많은 Al-Mo화합물을 석출시킬 수 있다. 이렇게 하여, 몰리브덴 및 동을 상기 특정량 함유하는 음극박은 에칭에 의해 미세하고 고밀도의 피트가 형성되어 상당히 높은 정전용량을 나타내게 된다.First, by setting the molybdenum content of aluminum to 0.005 to 1.0% by weight, preferably 0.01 to 0.3%, it is possible to obtain a structure in which fine and many Al-Mo compounds are dispersed in the matrix. Since this Al-Mo compound is extremely valuable potential and generates a large potential difference between the matrix, it acts as a starting point for fitting during etching, enabling the formation of fine dense pits. Moreover, when the copper content is set to 0.1 to 1.0% by weight, the corrosiveness of the matrix is increased and more Al-Mo compounds can be precipitated. In this way, the negative electrode foil containing the specific amount of molybdenum and copper forms fine, high-density pits by etching, resulting in a considerably high capacitance.
또, 몰리브덴 및 동의 함유량이 소량에 지나지 않는 경우에는 소기의 효과가 충분히 달성되지 않고, 한편 몰리브덴 및 동의 함유량이 1.0중량%를 넘는 경우에는 무효용해가 과도하게 되어 반대로 정전용량이 저하한다.In addition, when the content of molybdenum and copper is only a small amount, the desired effect is not sufficiently achieved. On the other hand, when the content of molybdenum and copper exceeds 1.0% by weight, dissolution becomes excessive, and conversely, the capacitance decreases.
본 발명에서 동과 몰리브덴에 더하여 다시 코발트 및 니켈중 적어도 1종을 0.005∼1.0중량% 함유시키는 경우에는 미세한 피트형성이 더욱 촉진되어 음극박의 정전용량이 더욱 높아지게 된다. 코발트 및 또는 니켈의 함유량이 0.005중량% 미만인 경우에는 거의 효과가 없고, 1.0중량%를 넘는 경우에는 음극박의 정전용량이 반대로 저하하는 경향을 나타낸다.In the present invention, when 0.005 to 1.0% by weight of at least one of cobalt and nickel is added in addition to copper and molybdenum, fine pit formation is further promoted, thereby increasing the capacitance of the negative electrode foil. When the content of cobalt and / or nickel is less than 0.005% by weight, there is almost no effect. When the content of cobalt and / or nickel is more than 1.0% by weight, the capacitance of the negative electrode foil is inversely lowered.
또, 본 발명의 음극박은 음극박용 합금의 지금(地金)에 통상 함유되어 있는 불가피한 불순물을 포함하여도 좋다. 예를들면, 0.5중량%까지의 철은 음극박의 성능에 실질상의 영향을 주지않고, 오히려 음극박의 강도를 향상시키는 동시에 화학용해성을 촉진한다. 또, 통상 0.05∼0.5중량% 정도 포함되어 있는 실리콘도 음극박의 성능에는 영향을 미치지 않는다.Moreover, the negative electrode foil of this invention may contain the unavoidable impurity normally contained in the present time of the negative electrode foil alloy. For example, up to 0.5% by weight of iron does not substantially affect the performance of the negative electrode foil, but rather enhances the strength of the negative electrode foil and promotes chemical solubility. Moreover, the silicon | silicone normally contained about 0.05 to 0.5 weight% does not affect the performance of negative electrode foil.
본 발명의 음극박에 있어서는 메트릭스중에 분산하여 존재하는 미세한 다수의 Al-Mo화합물이 전위적으로 중요하므로 에칭조작중에 부식개시점이 되어 미세한 고밀도의 피트가 신속하게 형성된다. 그 결과 높은 표면확대율이 성취되므로 음극박으로서의 정전용량이 크고 강도도 크다. 또, 몰리브덴 및 그 화합물은 농업용수등의 관개수로서 수질규제를 받지 않는 안전한 화학종이므로 노화된 에칭액의 배수처리는 특별한 배려를 할 필요가 없다.In the negative electrode foil of the present invention, since a large number of fine Al-Mo compounds dispersed and present in the matrix are of potential importance, fine high-density pits are rapidly formed during the etching operation. As a result, high surface magnification is achieved, so that the capacitance as the cathode foil is large and the strength is also large. In addition, since molybdenum and its compounds are safe chemical species that are not subject to water regulation as irrigation water such as agricultural water, drainage treatment of the aged etching solution does not require special consideration.
다음 실시예로써 본 발명의 특징을 보다 명확히 설명한다.The features of the present invention will be described more clearly with reference to the following examples.
[실시예1]Example 1
1차 전해알루미늄지금에 표 1의 각 성분을 더한 알루미늄주괴로부터 통상의 박제조공정에 따라 두께 65μm의 합금박을 얻었다.Primary electrolytic aluminum The alloy foil of 65 micrometers in thickness was obtained from the aluminum ingot which added each component of Table 1 to it according to a normal manufacturing process.
각 합금박을 염산 5중량% 및 염화알루미늄 10중량%를 함유하는 욕에 온도 95℃에서 4초동안 침지하여 화학에칭한 후, 5중량% 붕산액중에서 3V의 화성(化成)을 행하고, LCR미터(橫河電氣(株)제품)로써 8% 붕산암모늄용액중에서 정전용량을 측정하였다.Each alloy foil was chemically etched by immersing in a bath containing 5% by weight of hydrochloric acid and 10% by weight of aluminum chloride at a temperature of 95 ° C. for 4 seconds, and then chemically etched at 3V in a 5% by weight boric acid solution, followed by LCR meter. The capacitance was measured in the 8% ammonium borate solution as a product of the product.
각 합금성분의 함유량과 정전용량간의 관계를 표 1에 나타낸다. 시료번호 1은 1차 전해알루미늄지금으로부터 얻은 박이고, 번호 2는 특공소 44-25016호의 발명에 의한 것이며, 번호 3∼14는 본 발명에 따른 박이다.Table 1 shows the relationship between the content of each alloy component and the capacitance. Sample number 1 is foil obtained from primary electrolytic aluminum now, number 2 is by invention of Unexamined-Japanese-Patent No. 44-25016, and numbers 3-14 are foil which concerns on this invention.
[표1]Table 1
표 1의 결과로부터 명확한 바와같이 본 발명에 따른 음극박은 극히 높은 정전용량을 나타내고 있다.As is clear from the results of Table 1, the cathode foil according to the present invention exhibits extremely high capacitance.
Claims (2)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61085796A JPS62243734A (en) | 1986-04-14 | 1986-04-14 | Aluminum alloy foil for cathode of electrolytic capacitor |
| JP85796/86 | 1986-04-14 | ||
| JP85796 | 1986-04-14 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR870010582A KR870010582A (en) | 1987-11-30 |
| KR960003940B1 true KR960003940B1 (en) | 1996-03-23 |
Family
ID=13868845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019870003564A KR960003940B1 (en) | 1986-04-14 | 1987-04-14 | Aluminium alloy film for the electrolytic capacitor negative pole |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPS62243734A (en) |
| KR (1) | KR960003940B1 (en) |
-
1986
- 1986-04-14 JP JP61085796A patent/JPS62243734A/en active Granted
-
1987
- 1987-04-14 KR KR1019870003564A patent/KR960003940B1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| JPS64453B2 (en) | 1989-01-06 |
| JPS62243734A (en) | 1987-10-24 |
| KR870010582A (en) | 1987-11-30 |
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