JPS622450B2 - - Google Patents
Info
- Publication number
- JPS622450B2 JPS622450B2 JP56023481A JP2348181A JPS622450B2 JP S622450 B2 JPS622450 B2 JP S622450B2 JP 56023481 A JP56023481 A JP 56023481A JP 2348181 A JP2348181 A JP 2348181A JP S622450 B2 JPS622450 B2 JP S622450B2
- Authority
- JP
- Japan
- Prior art keywords
- aluminum
- anode
- titanium
- alloy
- lead wire
- 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.)
- Expired
Links
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- Powder Metallurgy (AREA)
Description
【発明の詳細な説明】
本発明はアルミニウムとチタンの合金より成る
焼結体を用いた電解コンデンサ用陽極体に関す
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an anode body for an electrolytic capacitor using a sintered body made of an alloy of aluminum and titanium.
従来、電解コンデンサ用陽極体としては、弁作
用金属であるタンタル，アルミニウム等が実用化
されている。このうち、タンタルを陽極金属とす
る電解コンデンサは漏れ電流、誘電損失等の電気
的特性にすぐれ、小型大容量化が可能であること
から、信頼性，小型化を要する分野で広く使用さ
れている。しかし、近年タンタルの価格高騰が激
しく、代替原料が要求されている。一方、アルミ
ニウムを陽極体とする電解コンデンサは、原料と
なるアルミニウムが入手しやすい上、更に低価格
で製造できる。しかし、アルミニウムを陽極体と
する電解コンデンサはタンタルを陽極金属とする
電解コンデンサに比較し、漏れ電流，誘電損失等
の電気的特性にやや劣り、さらに、焼結が難かし
いことから、小型，大容量化が困難である。 Conventionally, valve metals such as tantalum and aluminum have been put into practical use as anode bodies for electrolytic capacitors. Among these, electrolytic capacitors that use tantalum as the anode metal have excellent electrical characteristics such as leakage current and dielectric loss, and can be made smaller and larger in capacity, so they are widely used in fields that require reliability and miniaturization. . However, the price of tantalum has skyrocketed in recent years, and alternative raw materials are required. On the other hand, electrolytic capacitors using aluminum as the anode body have aluminum as a raw material that is easily available and can be manufactured at a lower cost. However, compared to electrolytic capacitors using tantalum as the anode metal, electrolytic capacitors using aluminum as the anode metal have slightly inferior electrical characteristics such as leakage current and dielectric loss, and are also difficult to sinter, making them small and large. Difficult to increase capacity.
これに対し、アルミニウムとチタンの合金を陽
極金属とする電解コンデンサは漏れ電流、誘電損
失等の電気的特性にすぐれ、小型，大容量化が可
能であり、しかも、原材料であるアルミニウムお
よびチタンが入手し易く、安価であることから、
将来の発展が期待できる。 On the other hand, electrolytic capacitors that use an alloy of aluminum and titanium as the anode metal have excellent electrical properties such as leakage current and dielectric loss, and can be made smaller and have a larger capacity.Moreover, the raw materials aluminum and titanium are readily available. Because it is easy and cheap,
We can expect future development.
電解コンデンサ用陽極体は、弁作用金属の陽極
リード線を有する必要があり、従来、多孔質焼結
体より成る陽極体は、通常、金属粉末を、それと
同種の金属線を埋め込み、加圧成形し、これを適
当な温度で焼結して得ていた。しかしながら、ア
ルミニウムとチタンの合金はもろいため細線とす
ることが難しく、さらに、たとえ細線としても、
これを陽極体のリード線に適用するには種々扱い
にくい点があり、アルミニウムとチタンの合金よ
り成る焼結体においては、同種の金属線を埋込み
リード線として工業的に製造することはむずかし
い。 Anode bodies for electrolytic capacitors must have anode lead wires made of valve metal. Conventionally, anode bodies made of porous sintered bodies are usually made by embedding metal powder and metal wires of the same type, and then forming the anode body under pressure. This was obtained by sintering at an appropriate temperature. However, aluminum and titanium alloys are brittle and difficult to make into thin wires, and even if they are made into thin wires,
There are various difficulties in applying this to the lead wire of an anode body, and in a sintered body made of an alloy of aluminum and titanium, it is difficult to industrially manufacture the same type of metal wire as an embedded lead wire.
本発明の目的は、安価で入手しやすく、加工し
やすい陽極リード線を有する電解コンデンサ用陽
極体を提供するものである。 An object of the present invention is to provide an anode body for an electrolytic capacitor having an anode lead wire that is inexpensive, easily available, and easy to process.
本発明によれば、アルミニウムおよびチタンの
合金より成る焼結体にアルミニウム線を直接接続
した構造の電解コンデンサ用陽極体が得られる。 According to the present invention, an anode body for an electrolytic capacitor having a structure in which an aluminum wire is directly connected to a sintered body made of an alloy of aluminum and titanium can be obtained.
以下、本発明の実施例と従来例との図面を比較
参照して説明する。第１図ａ，ｂ，ｃは、本発明
の電解コンデンサ用陽極体の一実施例であり、第
２図には、従来の電解コンデンサ用陽極体の一例
として、タンタル電解コンデンサ用陽極体の断面
図の一例を示した。第１図中、１はアルミニウム
とチタンの合金より成る焼結体、２は陽極リード
線である。陽極リード線２としてアルミニウム線
をアルミニウムとチタンの合金より成る焼結体１
の表面の一部に直接接続してある。第２図中、３
はタンタル焼結体、４は陽極リード線である。タ
ンタル電解コンデンサ用陽極体では陽極リード線
４として、タンタル線の一部をタンタル焼結体に
埋込んである。 DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention and a conventional example will be described below with reference to the drawings for comparison. Figures 1a, b, and c show an embodiment of an anode body for an electrolytic capacitor according to the present invention, and Figure 2 shows a cross section of an anode body for a tantalum electrolytic capacitor as an example of a conventional anode body for an electrolytic capacitor. An example of the figure is shown. In FIG. 1, 1 is a sintered body made of an alloy of aluminum and titanium, and 2 is an anode lead wire. A sintered body 1 made of an alloy of aluminum and titanium with an aluminum wire as an anode lead wire 2
directly connected to a part of the surface of the In Figure 2, 3
is a tantalum sintered body, and 4 is an anode lead wire. In an anode body for a tantalum electrolytic capacitor, a part of a tantalum wire is embedded in a tantalum sintered body as an anode lead wire 4.
一般にアルミニウム線は原材料が豊富であり、
加工しやすく、純度の高いものでも容易に安価に
入手することができる。一方、アルミニウムとチ
タンより成る合金の陽極酸化被膜の性質は、アル
ミニウムの陽極酸化被膜の性質に近く、アルミニ
ウムとチタンの合金に陽極リード線としてアルミ
ニウム線を接続させ、陽極酸化を行つても漏れ電
流の増大等、界面での特異現象が現われずアルミ
ニウムとチタンの合金の陽極酸化特性を維持でき
る。本発明では、陽極リード線を有しないアルミ
ニウムとチタンの合金より成る焼結後の焼結体１
にアルミニウム線を溶接などの公知手段により接
続して陽極リード線２を形成することができる。 In general, aluminum wire has abundant raw materials,
It is easy to process, and even products with high purity can be easily obtained at low cost. On the other hand, the properties of the anodized film of an alloy made of aluminum and titanium are close to those of aluminum, and even if an aluminum wire is connected as an anode lead wire to the alloy of aluminum and titanium and anodized, there will be no leakage current. Anodic oxidation properties of the aluminum and titanium alloy can be maintained without any peculiar phenomena occurring at the interface such as an increase in . In the present invention, a sintered body 1 made of an alloy of aluminum and titanium without an anode lead wire is used.
The anode lead wire 2 can be formed by connecting an aluminum wire to the anode lead wire 2 by a known means such as welding.
ここで、本発明の特徴は、アルミニウムとチタ
ンの合金より成る焼結体に、アルミニウムの陽極
リードを接続した構造であり、アルミニウムとチ
タンの合金より成る焼結体１の形状は問わない。
たとえば、形状は円柱形，円盤状，直方体等が考
えられる。また、陽極リード線２はアルミニウム
で形成されていれば良く、線の太さを規定するも
のではなく、線の断面も円形，楕円形，正方形，
長方形等、規定するものではない。さらに、アル
ミニウムとチタンの合金より成る焼結体１に、陽
極リード線２を接続する方法も通電溶接、レーザ
ー溶接、かしめ等が可能である。 Here, the feature of the present invention is a structure in which an aluminum anode lead is connected to a sintered body made of an alloy of aluminum and titanium, and the shape of the sintered body 1 made of an alloy of aluminum and titanium is not limited.
For example, the shape may be a cylinder, a disk, a rectangular parallelepiped, etc. Further, the anode lead wire 2 only needs to be made of aluminum, and the thickness of the wire is not specified, and the cross section of the wire may also be circular, oval, square, etc.
It does not specify a rectangle or the like. Further, the anode lead wire 2 can be connected to the sintered body 1 made of an alloy of aluminum and titanium by electric welding, laser welding, caulking, or the like.
以下に本発明のアルミニウムとチタンの合金よ
り成る焼結体１にアルミニウム線を通電溶接した
実施例を示す。 An example in which an aluminum wire is electrically welded to a sintered body 1 made of an alloy of aluminum and titanium according to the present invention will be shown below.
実施例 １
アルミニウム54原子％，チタン46原子％より成
る20mgの混合粉末を直径２mmの円柱状に加圧成形
し、次に真空度10-6torrの減圧雰囲気の温度1050
℃中で２時間焼結した。この焼結後の焼結体の窒
素雰囲気中で、タンタル電極を用い、直径0.3mm
φ，純度99.99％のアルミニウム線を通電溶接
し、陽極体試料No.１を形成した。Example 1 20 mg of mixed powder consisting of 54 at% aluminum and 46 at% titanium was pressure-molded into a cylindrical shape with a diameter of 2 mm, and then heated at a temperature of 1050 in a reduced pressure atmosphere with a degree of vacuum of 10 -6 torr.
It was sintered for 2 hours at ℃. After sintering, the sintered body was heated in a nitrogen atmosphere using a tantalum electrode with a diameter of 0.3 mm.
Anode body sample No. 1 was formed by current welding an aluminum wire with a diameter of 99.99% and a purity of 99.99%.
次に、アルミニウムとチタンの合金線を埋込み
リード線とし、アルミニウム54原子％、チタン46
原子％より成る20mgの混合粉末を加圧成形し、真
空度10-6torrの減圧雰囲気の温度1050℃中で２時
間焼結し、陽極体試料No.２を形成した。 Next, aluminum and titanium alloy wires were embedded as lead wires, with 54 atomic percent aluminum and 46 atomic percent titanium.
20 mg of mixed powder consisting of atomic% was press-molded and sintered for 2 hours at a temperature of 1050° C. in a reduced-pressure atmosphere with a degree of vacuum of 10 −6 torr to form anode body sample No. 2.
陽極体試料No.１およびNo.２を１重量％の炭酸ア
ンモニウム水溶液中で直流電圧100Vで陽極酸化
した。陽極酸化した後、それぞれの試料につい
て、静電容量誘電損失、漏れ電流を測定し比較し
たが、試料No.１および試料No.２の測定値は誤差範
囲内で一致した。この結果を第３図〜第５図に示
す。なお、静電容量、誘電損失は10容量％のリン
酸水溶液中で、漏れ電流は１重量％の炭酸アンモ
ニウム水溶液中で直流電圧20Vを印加し、１分後
にそれぞれ測定した。 Anode body samples No. 1 and No. 2 were anodized in a 1% by weight ammonium carbonate aqueous solution at a DC voltage of 100V. After anodizing, capacitance dielectric loss and leakage current were measured and compared for each sample, and the measured values for sample No. 1 and sample No. 2 matched within the error range. The results are shown in FIGS. 3 to 5. Incidentally, capacitance and dielectric loss were measured in a 10% by volume phosphoric acid aqueous solution, and leakage current was measured in a 1% by weight ammonium carbonate aqueous solution by applying a DC voltage of 20 V and measuring 1 minute later.
実施例 ２
実施例２では焼結体１と陽極リード線２との接
続を通電溶接ではなく、レーザー溶接をした。Example 2 In Example 2, the sintered body 1 and the anode lead wire 2 were connected by laser welding instead of current welding.
アルミニウム線をレーザー溶接した以外は実施
例１の陽極体試料１と全く同様な方法で陽極体試
料No.３を作製し、実施例１と同様に陽極酸化し、
評価したところ、実施例１と同様な結果が得られ
た。この結果を第３図〜第５図に示す。 Anode body sample No. 3 was prepared in exactly the same manner as anode body sample 1 of Example 1 except that the aluminum wire was laser welded, and anodized in the same manner as in Example 1.
As a result of evaluation, the same results as in Example 1 were obtained. The results are shown in FIGS. 3 to 5.
以上、本発明の電解コンデンサ用陽極体の陽極
酸化後のコンデンサ特性は従来のアルミニウムと
チタンの合金線を埋込み陽極リード線としたもの
に劣らない。 As described above, the capacitor properties after anodization of the anode body for an electrolytic capacitor of the present invention are not inferior to those of the conventional anode lead wire made of an alloy wire of aluminum and titanium.
この他、焼結体１の形状が円盤状、直方体のも
の、陽極リード線２の焼結体との接続をかしめで
行つたものについても、同様な結果が認められ
た。 In addition, similar results were observed when the sintered body 1 was in the shape of a disc or a rectangular parallelepiped, and when the anode lead wire 2 was connected to the sintered body by caulking.
以上、本発明により次の効果がある。 As described above, the present invention has the following effects.
(i) 純度の高い陽極リード線材料が安価に容易に
入手できる。(i) Highly pure anode lead wire materials can be easily obtained at low cost.
(ii) 埋込み陽極リード線を用いないため、製造装
置が簡略化でき、大幅な製造コストの低下とな
る。(ii) Since no embedded anode lead wire is used, the manufacturing equipment can be simplified, resulting in a significant reduction in manufacturing costs.
第１図ａ，ｂ，ｃは本発明の電解コンデンサ用
陽極体のそれぞれ円柱形，円盤状，直方体形状の
実施例斜視図。第２図は従来例のタンタル電解コ
ンデンサ用陽極体の断面図。第３図〜第５図は、
本発明の実施例のそれぞれ静電容量，誘電損失，
漏れ電流の測定値を示した図である。
１……アルミニウムとチタンの合金より成る焼
結体、２……陽極リード線、３……タンタル焼結
体、４……陽極リード線。
1A, 1B, and 1C are perspective views of embodiments of an anode body for an electrolytic capacitor according to the present invention having a cylindrical shape, a disk shape, and a rectangular parallelepiped shape, respectively. FIG. 2 is a sectional view of a conventional anode body for a tantalum electrolytic capacitor. Figures 3 to 5 are
The capacitance, dielectric loss, and
FIG. 3 is a diagram showing measured values of leakage current. 1...Sintered body made of an alloy of aluminum and titanium, 2...Anode lead wire, 3...Tantalum sintered body, 4...Anode lead wire.
Claims (1)
体の表面に、アルミニウム線を溶接またはかしめ
接続したことを特徴とする電解コンデンサ用陽極
体。1. An anode body for an electrolytic capacitor, characterized in that an aluminum wire is welded or caulked to the surface of a sintered body made of an alloy of aluminum and titanium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2348181A JPS57138123A (en) | 1981-02-19 | 1981-02-19 | Anode unit for electrolytic condenser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2348181A JPS57138123A (en) | 1981-02-19 | 1981-02-19 | Anode unit for electrolytic condenser |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57138123A JPS57138123A (en) | 1982-08-26 |
| JPS622450B2 true JPS622450B2 (en) | 1987-01-20 |
Family
ID=12111712
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2348181A Granted JPS57138123A (en) | 1981-02-19 | 1981-02-19 | Anode unit for electrolytic condenser |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57138123A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04180505A (en) * | 1990-11-14 | 1992-06-26 | Ndc Co Ltd | Porous metal panel and its manufacture |
| JP6476410B2 (en) * | 2014-04-15 | 2019-03-06 | パナソニックＩｐマネジメント株式会社 | Electrolytic capacitor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55148415A (en) * | 1979-05-08 | 1980-11-19 | Nippon Electric Co | Anode material for electrolytic condenser |
-
1981
- 1981-02-19 JP JP2348181A patent/JPS57138123A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57138123A (en) | 1982-08-26 |
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