JPH0462823A - Aluminum foil for electrolytic capacitor electrode - Google Patents
Aluminum foil for electrolytic capacitor electrodeInfo
- Publication number
- JPH0462823A JPH0462823A JP16708990A JP16708990A JPH0462823A JP H0462823 A JPH0462823 A JP H0462823A JP 16708990 A JP16708990 A JP 16708990A JP 16708990 A JP16708990 A JP 16708990A JP H0462823 A JPH0462823 A JP H0462823A
- Authority
- JP
- Japan
- Prior art keywords
- foil
- earth elements
- rare
- aluminum
- rare earth
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000011888 foil Substances 0.000 title claims abstract description 50
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 33
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 32
- 239000003990 capacitor Substances 0.000 title claims abstract description 9
- 229910052761 rare earth metal Inorganic materials 0.000 claims abstract description 32
- 239000002344 surface layer Substances 0.000 claims abstract description 20
- 238000000137 annealing Methods 0.000 abstract description 5
- 230000001965 increasing effect Effects 0.000 abstract description 5
- 238000010438 heat treatment Methods 0.000 abstract description 4
- 238000005096 rolling process Methods 0.000 abstract description 4
- 238000005266 casting Methods 0.000 abstract description 3
- 238000005097 cold rolling Methods 0.000 abstract description 3
- 238000005098 hot rolling Methods 0.000 abstract description 3
- 229910052751 metal Inorganic materials 0.000 abstract description 2
- 239000002184 metal Substances 0.000 abstract description 2
- 238000005530 etching Methods 0.000 description 16
- 230000000694 effects Effects 0.000 description 7
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 229910052684 Cerium Inorganic materials 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910052746 lanthanum Inorganic materials 0.000 description 2
- 238000004544 sputter deposition Methods 0.000 description 2
- 229910052727 yttrium Inorganic materials 0.000 description 2
- 229910052692 Dysprosium Inorganic materials 0.000 description 1
- 229910052691 Erbium Inorganic materials 0.000 description 1
- 229910052693 Europium Inorganic materials 0.000 description 1
- 229910052688 Gadolinium Inorganic materials 0.000 description 1
- 229910052689 Holmium Inorganic materials 0.000 description 1
- 229910052765 Lutetium Inorganic materials 0.000 description 1
- 229910052779 Neodymium Inorganic materials 0.000 description 1
- 229910052777 Praseodymium Inorganic materials 0.000 description 1
- 229910052772 Samarium Inorganic materials 0.000 description 1
- 229910052771 Terbium Inorganic materials 0.000 description 1
- 229910052775 Thulium Inorganic materials 0.000 description 1
- 229910052769 Ytterbium Inorganic materials 0.000 description 1
- 239000010405 anode material Substances 0.000 description 1
- 239000010953 base metal Substances 0.000 description 1
- 229910052797 bismuth Inorganic materials 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 238000000866 electrolytic etching Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 235000006408 oxalic acid Nutrition 0.000 description 1
- 229910052706 scandium Inorganic materials 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
この発明は電解コンデンサ電極用アルミニウム箔、とく
に中高圧用の陽極材料として用いられるアルミニウム箔
に関する。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to an aluminum foil for electrolytic capacitor electrodes, and particularly to an aluminum foil used as an anode material for medium and high voltage applications.
従来の技術
電解コンデンサ電極用アルミニウム箔は、その実効表面
積を拡大して単位面積当りの静電容量を増大するため、
一般に電気的あるいは電気化学的なエツチング処理が施
される。そしてこの拡面率を上げるために、エツチング
処理により箔表面に形成されるエツチングピットの密度
を増大することについて、従来から多くの研究がなされ
てきた。なかでも、エツチングピットの密度は、アルミ
ニウム箔の表面部の組成、組織に大きく影響されること
の知見から、特公昭６１−４２３７０号公報に見られる
ように、表層部に、Ｐｂ、Ｂｊ、Ｉｎの群から選ばれた
１種以上の元素を高濃度に含有せしめるものとする技術
の有用性が提案されている。そしてか＼るアルミニウム
箔の製造は、その−例として、アルミニウム箔の表面に
ＰｂＳ Ｉｎ及びＢｉの少なくとも１種を化合物の状態
で付与し、これら金属の融点以上の温度で熱拡散処理し
、必要ならば常法に従って焼鈍を行うものとすることが
提案されている。Conventional technology Aluminum foil for electrolytic capacitor electrodes expands its effective surface area and increases capacitance per unit area.
Generally, electrical or electrochemical etching treatment is performed. In order to increase this area enlargement ratio, many studies have been made to increase the density of etching pits formed on the foil surface by etching treatment. In particular, from the knowledge that the density of etching pits is greatly influenced by the composition and structure of the surface part of aluminum foil, as seen in Japanese Patent Publication No. 61-42370, Pb, Bj, and In are added to the surface part. It has been proposed that the technology is useful in containing one or more elements selected from the group of 1 or more elements in a high concentration. For example, in the production of such aluminum foil, at least one of PbS In and Bi is applied in the form of a compound to the surface of the aluminum foil, and heat diffusion treatment is performed at a temperature higher than the melting point of these metals. If so, it is proposed that annealing be performed according to a conventional method.
発明が解決しようとする課題
この発明は、上記のような従来技術の背景の中で、アル
ミニウム箔の表面に高濃度に含有せしめて拡面率の増大
に有効に寄与せしめうる上記以外の元素を探索し、その
分布状態と分布量との関係から、最も拡面率の拡大に有
効な範囲を見出すことにより、静電容量の増大をはかり
うる電解コンデンサ電極用アルミニウム箔を提供するこ
とを目的とする。Problems to be Solved by the Invention In view of the background of the prior art as described above, the present invention has been made to provide an element other than the above that can be contained in a high concentration on the surface of an aluminum foil and effectively contribute to an increase in the area expansion ratio. The purpose is to provide an aluminum foil for electrolytic capacitor electrodes that can increase capacitance by searching and finding the most effective range for expanding the area ratio from the relationship between the distribution state and the distribution amount. do.
課題を解決するだめの手段
この発明は、上記拡面率の増大に有効に作用する元素と
して、希土類元素を選択するものである。Means for Solving the Problems In the present invention, a rare earth element is selected as an element that effectively acts to increase the area expansion ratio.
而して、この発明は、アルミニウム純度か９９．９％以
」−で、希土類元素のうちの１種または２種以」−を総
量て屹 ２〜５０１） ｌ） ｍ含有し、表面から厚さ
０，１μｍまでの表層部に上記希土類元素の合計濃度が
箔内部の含有量の１．５〜５００倍の範囲に含有されて
なることを特徴とする電解コンデンサ電極用アルミニウ
ム箔を要旨とする。Therefore, the present invention provides aluminum with a purity of 99.9% or more, containing one or more rare earth elements in a total amount of 2 to 501) l) m, and having a thickness from the surface. The subject matter is an aluminum foil for electrolytic capacitor electrodes, characterized in that the total concentration of the above-mentioned rare earth elements is contained in the surface layer up to 0.1 μm in the range of 1.5 to 500 times the content inside the foil. .
この発明において、アルミニウム箔の全体としてのアル
ミニウム純度に９９．９％以上を必要とし、かつ希土類
元素の含有量が０．２〜５０ｐｐｍに限定されるのは、
上記未満の純度でかつ希土類元素の総合有量が５０１）
ｐｍを超えるときは、電解エツチング時にエツチングピ
ットの成長が多くの不純物の存在によって阻害され、均
一な深いトンネル状ピットを形成できず、従って静電容
量の高いアルミニウム箔を得ることができないためであ
る。また、希土類元素の含有量が屹 ２ｐｐｍ未腐では
、エツチングピッ）・が少ないものとなって十分な静電
容量の増大効果を得ることができない。好ましくはアル
ミニウム純度９９．９８％以上で、希土類元素の含有量
を１〜３０ ｐ ｐｍ程度としたものを用いるのが良い
。In this invention, the overall aluminum purity of the aluminum foil is required to be 99.9% or more, and the rare earth element content is limited to 0.2 to 50 ppm.
(purity less than the above and total amount of rare earth elements is 501)
This is because when it exceeds pm, the growth of etching pits during electrolytic etching is inhibited by the presence of many impurities, making it impossible to form uniform deep tunnel-shaped pits, and therefore making it impossible to obtain aluminum foil with high capacitance. . Furthermore, if the rare earth element content is 2 ppm, the etching pits will be small and a sufficient effect of increasing capacitance cannot be obtained. It is preferable to use aluminum having a purity of 99.98% or more and a rare earth element content of about 1 to 30 ppm.
アルミニウム箔の表面から０． １μｍの厚さの範囲内
に希土類元素のうちの１種または２種以上を高濃度に含
有せしめるものとすることは、静電容量の増大効果を得
るための主要素をなすものであり、この効果が得られる
理由は、上記高濃度の含有によって箔表面の酸化皮膜が
微細な欠陥部を無数に有するものとなり、エツチングの
初期の段階で」１記欠陥部がエツチングの開始点となり
、多数のエツチングピットが形成され、以降箔内面にト
ンネル状に深く進行するため、より大きな拡面率が得ら
れることによるものと考えられる。従って、表層部の厚
さ０．１μｍは、必ずしもその数値自体に作用効果上の
臨界意義を有するものではなく、その厚み範囲内の表面
層において希土類元素の合計濃度が箔内部のその含有量
の１．５〜５００倍であるべきものとする点にその限定
意義を有するものである。従ってまた、上記元素は上記
表層部に均一に分布していることを要するものではなく
、むしろその更に表面部に高濃度に偏在することが好ま
しいものである。0.0 from the surface of the aluminum foil. Containing one or more rare earth elements at a high concentration within a thickness of 1 μm is the main element for obtaining the effect of increasing capacitance. The reason why this effect is obtained is that the oxide film on the surface of the foil has countless fine defects due to the above-mentioned high concentration. This is thought to be due to the fact that etching pits are formed and then proceed deep into the inner surface of the foil in the form of a tunnel, resulting in a larger area enlargement ratio. Therefore, the thickness of the surface layer of 0.1 μm does not necessarily have a critical significance in terms of the function and effect, and the total concentration of rare earth elements in the surface layer within that thickness range is less than the content inside the foil. The significance of this limitation is that it should be 1.5 to 500 times larger. Therefore, it is not necessary that the above-mentioned elements be uniformly distributed in the above-mentioned surface layer portion, but rather it is preferable that they are evenly distributed at a high concentration in the surface layer portion.
こ＼に、希土類元素は、原子番号５７から７１までの１
５元素、すなわちＬａ、Ｃｅ、Ｐｒ。Rare earth elements have atomic numbers 1 from 57 to 71.
Five elements: La, Ce, Pr.
Ｎｄ、Ｐｍ、Ｓｍ、Ｅｕ、Ｇｄ、Ｔｂ、Ｄｙ。Nd, Pm, Sm, Eu, Gd, Tb, Dy.
Ｈｏ、Ｅｒ、Ｔｍ、Ｙｂ、ＬｕおよびこれらにＹ、Ｓｃ
を加えた１７元素の群からなるものてあり、これらの元
素はこの発明においてアルミニウム箔のエツチングによ
る表面積の拡大効果に有効に寄与するものである点で相
互に均等物として評価しうるものである。またこれらの
元素は、個々に単独の元素として用いる必要はなく、２
種以上の併用が許容されることはもちろん、希土類元素
の混合塩化物を電解して得られるミツシュメタル（Ｍ−
Ｍ）を用いても良い。Ho, Er, Tm, Yb, Lu and Y, Sc to these
In this invention, these elements can be evaluated as mutually equivalent in that they effectively contribute to the effect of expanding the surface area by etching aluminum foil. . In addition, these elements do not need to be used individually as single elements, but two
Not only is it permissible to use more than one species in combination, but Mitsushmetal (M-
M) may also be used.
入手のし易さから工業的にはＹ、Ｌａ、Ｃｅ。Industrially, Y, La, and Ce are used because of their easy availability.
Ｐｒ５Ｎｄ、Ｓｍ、 ミツシュメタルの群から選ばれた
１種または２種以上の組合わせにおいて用いるのが好適
である。It is preferable to use one kind or a combination of two or more kinds selected from the group of Pr5Nd, Sm, and Mitsushmetal.
ところで、表層部における上記希土類元素の合計におけ
る含有量が箔内部の含有量の１−１５倍未満では、エツ
チングピットの密度が不十分なものとなり、十分な静電
容量の増大効果を得ることができない。一方、該元素の
表層部含有量が箔内部の含有量の５００倍を超えると、
アルミニウム箔表面の耐食性が著しく低下し、エツチン
グピットが限度を超えて高密度に形成される結果ピット
同志か合体して実質的な箔表面の全面溶解につながり、
かえって表面積が小さいものとなる。上記表層部におけ
る希土類元素の１種または２種以上の合計の含有量の最
も好ましい範囲は、箔内部の含有量に対し概ね５〜２０
０倍である。By the way, if the total content of the above-mentioned rare earth elements in the surface layer is less than 1 to 15 times the content inside the foil, the density of the etched pits will be insufficient and it will be difficult to obtain a sufficient capacitance increasing effect. Can not. On the other hand, if the surface layer content of the element exceeds 500 times the content inside the foil,
The corrosion resistance of the aluminum foil surface is significantly reduced, and as a result, etching pits are formed at a higher density than possible, causing the pits to coalesce, leading to substantial dissolution of the entire surface of the foil.
On the contrary, the surface area becomes smaller. The most preferable range of the total content of one or more rare earth elements in the surface layer is approximately 5 to 20% of the content inside the foil.
It is 0 times.
上記の如く表層部に希土類元素のうちの少なくとも１押
具」二の元素を高濃度に含有するアルミニウム箔の製造
は、アルミニウム地金を溶解する段階で所要量の上記希
土類元素の１種または２種以上を添加し、鋳造後、常法
に従って熱間圧延、冷間圧延、箔圧延、要ずれはその間
に更に中間焼鈍を行って製箔し、この箔を例えは真空中
において４６０〜５８０°Ｃて１〜２４時間、好ましく
は４７５〜５４０°Ｃて２〜５時間の加熱処理を施すこ
とによって製造することができる。地金中に添加した」
１記希土類元素は、」二組加熱処理によって表層部に濃
化し、上記添加量との関係においてこの発明の規定範囲
に表層部に集中的に含有せしめることかできる。As mentioned above, in the production of aluminum foil containing a high concentration of at least one of the rare earth elements in the surface layer, the required amount of one or two of the above rare earth elements is melted in the step of melting the aluminum base metal. After casting, hot rolling, cold rolling, and foil rolling are carried out according to conventional methods, and intermediate annealing is further performed in between to form a foil. C. for 1 to 24 hours, preferably 475 to 540.degree. C. for 2 to 5 hours. It was added to the bullion.”
The rare earth element (1) can be concentrated in the surface layer by the second heat treatment, and concentrated in the surface layer within the specified range of the present invention in relation to the above-mentioned addition amount.
もっトモ、この発明に係るアルミニウム箔の製造は、上
記に限定されるものではなく、希土類元素をいずれも添
加しないアルミニウム箔の表面に別途それらの元素の１
一種以上をイオンスパッタリング、蒸着、もしくは希土
類元素を含む液中に浸漬する等の方法で適宜厚みの皮膜
として付与し、然るのち熱処理を行うことによって表層
部に拡散せしめるものとしても良い。更には、上記両手
段を併用するものとしても良い。However, the production of aluminum foil according to the present invention is not limited to the above, and the surface of the aluminum foil to which no rare earth elements are added is separately added with one of these elements.
One or more of them may be applied as a film of an appropriate thickness by ion sputtering, vapor deposition, or immersion in a solution containing a rare earth element, and then diffused into the surface layer by heat treatment. Furthermore, both of the above means may be used in combination.
発明の効果
この発明に係る電解コンデンサの電極用アルミニウム箔
は、エツチング性に優れ、エツチング処理により極めて
大きな拡面率を得ることができると共に、該エツチング
時において箔表面の全面溶解を抑制しうる。Effects of the Invention The aluminum foil for electrodes of electrolytic capacitors according to the present invention has excellent etching properties, and can obtain an extremely large area enlargement ratio through etching treatment, and can also suppress the entire surface of the foil from dissolving during the etching process.
従って、大きな静電容量を有し、電気的特性に優れると
共に、強度にも優れたものとなしうる。Therefore, it can be made to have a large capacitance, excellent electrical properties, and excellent strength.
実施例
純度９９．９９％の純アルミニウム地金（Ｓｉ：０．０
０２％、Ｆｅ：０．００２％）に希土類元素のうちから
選ばれたそのうぢの１種または２種以上を第１表に示す
各種の含有量となるように添加し、溶解鋳造後、熱間圧
延、冷間圧延、箔圧延、中間焼鈍、箔圧延を順次実施し
て厚さ屹 １ｍｍのアルミニウム箔に製造した。Example Pure aluminum ingot with a purity of 99.99% (Si: 0.0
0.02%, Fe: 0.002%) and one or more rare earth elements selected from rare earth elements are added to the various contents shown in Table 1, and after melting and casting, Hot rolling, cold rolling, foil rolling, intermediate annealing, and foil rolling were sequentially performed to produce an aluminum foil with a thickness of 1 mm.
そしてこのアルミニウム箔の表面に、希土類元素をイオ
ンスパッタリングにより所定量付与したものと、付与し
ないそのま＼のものとを各種作製した。次いで、これら
のアルミニウム箔に、真空下で４８５°ＣＸ３時間の最
終焼鈍処理を施し、電解コンデンサ電極材としての各種
供試料を得た。Various types of aluminum foils were prepared, including those to which a predetermined amount of rare earth elements were applied to the surface by ion sputtering, and those to which the rare earth elements were not applied. Next, these aluminum foils were subjected to a final annealing treatment at 485° C. for 3 hours under vacuum to obtain various samples as electrode materials for electrolytic capacitors.
これら各供試料は、表面から０．１μｍの表層部におけ
る上記希土類元素の４一種または２種以上の含有量が、
該表層部を除いた箔内部におけるそれらの含有量との比
較において第１表に併記する倍率を有するものとした。Each of these specimens had a content of four or more of the above rare earth elements in the surface layer 0.1 μm from the surface.
In comparison with the contents inside the foil excluding the surface layer portion, the magnifications shown in Table 1 were set.
次いで、上記の各種アルミニウム箔を、液温８５°Ｃの
５ｗ１％塩酸及び２０ｗｆ％硫酸を含む工ッチンク゛液
で、電流密度２ ＯＡ ／ ｄ ｍ’の直流電流を通じ
て１分３０秒間の第１段エツチングを施したのち、液温
８５℃の５ｗｔ％塩酸及び０゜２ｗ１％蓚酸を含むエツ
チング液で、電流密度５Ａ／ｄボの直流電流により９分
間の第２段エツチングを施した。Next, the above-mentioned various aluminum foils were subjected to a first stage etching for 1 minute and 30 seconds using an etching solution containing 5w1% hydrochloric acid and 20wf% sulfuric acid at a temperature of 85°C and passing a direct current at a current density of 2 OA/dm'. After that, a second stage etching was performed for 9 minutes using an etching solution containing 5 wt % hydrochloric acid and 0.2 wt % oxalic acid at a temperature of 85° C. and a direct current at a current density of 5 A/d.
そして、上記エツチド箔を３８０■に化成したのち、そ
れぞれの静電容量を測定し、比較例１８の試料の静電容
量を１００％とした場合との対比において他の各種試料
の静電容量比を求めた。その結果を第１表に併記する。After chemically converting the etched foil to 380μ, the capacitance of each was measured, and the capacitance ratios of other various samples were compared with the case where the capacitance of the sample of Comparative Example 18 was set as 100%. I asked for The results are also listed in Table 1.
上記第１表の結果から分かるように、表層部に希土類元
素のうちの１種または２種以上を本発明の規定量の範囲
で含有する電極箔は、実質的にそれを含まない箔及び表
層部に過多にそれらの元素を含有する箔に較べ、静電容
量の増大効果を有し、併せて強度に優れるものである。As can be seen from the results in Table 1 above, electrode foils containing one or more rare earth elements in the surface layer within the specified amount range of the present invention are different from foils that substantially do not contain rare earth elements and foils that do not substantially contain rare earth elements. Compared to foils that contain excessive amounts of these elements, they have the effect of increasing capacitance and are also superior in strength.
以上 ※Ｉ Ｍ・Ｍ ミツシュメタルthat's all *I M.M. Mitsushi Metal
Claims (1)
ちの１種または２種以上を総量で０．２〜５０ｐｐｍ含
有し、表面から厚さ０．１μｍまでの表層部に上記希土
類元素の合計濃度が箔内部の含有量の１．５〜５００倍
の範囲に含有されてなることを特徴とする電解コンデン
サ電極用アルミニウム箔。Aluminum purity is 99.9% or more, contains one or more rare earth elements in a total amount of 0.2 to 50 ppm, and the total concentration of the above rare earth elements in the surface layer from the surface to a thickness of 0.1 μm. An aluminum foil for an electrolytic capacitor electrode, characterized in that the content is 1.5 to 500 times the content inside the foil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16708990A JP2960118B2 (en) | 1990-06-25 | 1990-06-25 | Aluminum foil for electrolytic capacitor electrodes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16708990A JP2960118B2 (en) | 1990-06-25 | 1990-06-25 | Aluminum foil for electrolytic capacitor electrodes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0462823A true JPH0462823A (en) | 1992-02-27 |
| JP2960118B2 JP2960118B2 (en) | 1999-10-06 |
Family
ID=15843216
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16708990A Expired - Lifetime JP2960118B2 (en) | 1990-06-25 | 1990-06-25 | Aluminum foil for electrolytic capacitor electrodes |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2960118B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007046093A (en) * | 2005-08-09 | 2007-02-22 | Mitsubishi Alum Co Ltd | Aluminum foil for electrolytic capacitor electrode, and manufacturing method therefor |
| CN102766831A (en) * | 2012-08-01 | 2012-11-07 | 内蒙古包钢钢联股份有限公司 | Method for improving cubic texture occupancy rate of aluminum foil |
| RU179397U1 (en) * | 2017-08-29 | 2018-05-14 | Открытое акционерное общество "Элеконд" | Capacitor made using cathode scandium-containing foil |
| CN109295346A (en) * | 2017-07-24 | 2019-02-01 | 中南大学 | A kind of soft aluminium alloy of high conductivity and its preparation method and application |
| CN109338166A (en) * | 2018-09-25 | 2019-02-15 | 全球能源互联网研究院有限公司 | A kind of Al-Er-B heat-resisting alloy monofilament and preparation method thereof |
| CN110923528A (en) * | 2019-11-27 | 2020-03-27 | 新疆众和股份有限公司 | Anode aluminum foil and manufacturing method thereof |
-
1990
- 1990-06-25 JP JP16708990A patent/JP2960118B2/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007046093A (en) * | 2005-08-09 | 2007-02-22 | Mitsubishi Alum Co Ltd | Aluminum foil for electrolytic capacitor electrode, and manufacturing method therefor |
| CN102766831A (en) * | 2012-08-01 | 2012-11-07 | 内蒙古包钢钢联股份有限公司 | Method for improving cubic texture occupancy rate of aluminum foil |
| CN109295346A (en) * | 2017-07-24 | 2019-02-01 | 中南大学 | A kind of soft aluminium alloy of high conductivity and its preparation method and application |
| CN109295346B (en) * | 2017-07-24 | 2021-04-16 | 中南大学 | High-conductivity soft aluminum alloy and preparation method and application thereof |
| RU179397U1 (en) * | 2017-08-29 | 2018-05-14 | Открытое акционерное общество "Элеконд" | Capacitor made using cathode scandium-containing foil |
| CN109338166A (en) * | 2018-09-25 | 2019-02-15 | 全球能源互联网研究院有限公司 | A kind of Al-Er-B heat-resisting alloy monofilament and preparation method thereof |
| CN110923528A (en) * | 2019-11-27 | 2020-03-27 | 新疆众和股份有限公司 | Anode aluminum foil and manufacturing method thereof |
| CN110923528B (en) * | 2019-11-27 | 2022-05-17 | 新疆众和股份有限公司 | Method for manufacturing anode aluminum foil |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2960118B2 (en) | 1999-10-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH0462823A (en) | Aluminum foil for electrolytic capacitor electrode | |
| JPH07235457A (en) | Aluminum foil for forming electrode of electrolytic capacitor and etching method therefor | |
| JP3428035B2 (en) | Aluminum foil for anode of ultra-high voltage Al electrolytic capacitor | |
| JPH0462820A (en) | Aluminum foil for electrolytic capacitor electrode | |
| JP2960117B2 (en) | Aluminum foil for electrolytic capacitor electrodes | |
| JP2578521B2 (en) | Aluminum foil for electrolytic capacitor electrodes | |
| JP3130054B2 (en) | Aluminum foil for electrolytic capacitor electrodes | |
| JP2572479B2 (en) | Aluminum foil for electrolytic capacitor electrodes | |
| JP2960116B2 (en) | Aluminum foil for electrolytic capacitor electrodes | |
| JP2891517B2 (en) | Aluminum foil for electrolytic capacitor electrodes | |
| JP4125521B2 (en) | Aluminum foil for electrolytic capacitors | |
| JP3130056B2 (en) | Aluminum foil for electrolytic capacitor electrodes | |
| JP3130055B2 (en) | Aluminum foil for electrolytic capacitor electrodes | |
| KR950013775B1 (en) | Aluminium foil for electrolytic capacitor | |
| JP2002118035A (en) | Electrolytic capacitor electrode aluminum foil | |
| JP3244131B2 (en) | Aluminum alloy foil for electrolytic capacitor electrode and method for producing the same | |
| JP2578521C (en) | ||
| JP3297840B2 (en) | Aluminum foil for electrode of electrolytic capacitor | |
| JP4958464B2 (en) | Aluminum foil for electrolytic capacitor electrode | |
| JP4539912B2 (en) | Aluminum foil for electrolytic capacitor anode and manufacturing method thereof | |
| JPS6063359A (en) | Manufacture of aluminum foil for anode of electrolytic capacitor | |
| JPH03183749A (en) | Production of anode foil for electrolytic capacitor | |
| JPH0581164B2 (en) | ||
| JPH07297089A (en) | Aluminum foil for electrolytic capacitor electrode and its manufacturing method | |
| JPH0790519A (en) | Production of aluminum foil for electrolytic capacitor cathode |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080730 Year of fee payment: 9 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090730 Year of fee payment: 10 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090730 Year of fee payment: 10 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100730 Year of fee payment: 11 |
|
| EXPY | Cancellation because of completion of term |