JPH0449733B2 - - Google Patents
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- Publication number
- JPH0449733B2 JPH0449733B2 JP7661683A JP7661683A JPH0449733B2 JP H0449733 B2 JPH0449733 B2 JP H0449733B2 JP 7661683 A JP7661683 A JP 7661683A JP 7661683 A JP7661683 A JP 7661683A JP H0449733 B2 JPH0449733 B2 JP H0449733B2
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- JP
- Japan
- Prior art keywords
- weight
- amount
- performance
- range
- vacuum
- 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.)
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- 239000000463 material Substances 0.000 claims description 28
- 229910045601 alloy Inorganic materials 0.000 claims description 13
- 239000000956 alloy Substances 0.000 claims description 13
- 229910052751 metal Inorganic materials 0.000 claims description 12
- 239000002184 metal Substances 0.000 claims description 12
- 238000002844 melting Methods 0.000 claims description 8
- 239000011651 chromium Substances 0.000 claims description 7
- 230000008018 melting Effects 0.000 claims description 7
- 239000010949 copper Substances 0.000 claims description 6
- 229910052715 tantalum Inorganic materials 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- 229910000765 intermetallic Inorganic materials 0.000 claims description 5
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052804 chromium Inorganic materials 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 229910052716 thallium Inorganic materials 0.000 claims description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims 1
- 229910052684 Cerium Inorganic materials 0.000 claims 1
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 claims 1
- 229910052787 antimony Inorganic materials 0.000 claims 1
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 claims 1
- 229910052797 bismuth Inorganic materials 0.000 claims 1
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 claims 1
- 229910052791 calcium Inorganic materials 0.000 claims 1
- 239000011575 calcium Substances 0.000 claims 1
- ZMIGMASIKSOYAM-UHFFFAOYSA-N cerium Chemical compound [Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce] ZMIGMASIKSOYAM-UHFFFAOYSA-N 0.000 claims 1
- 239000011669 selenium Substances 0.000 claims 1
- 229910052711 selenium Inorganic materials 0.000 claims 1
- 229910052714 tellurium Inorganic materials 0.000 claims 1
- PORWMNRCUJJQNO-UHFFFAOYSA-N tellurium atom Chemical compound [Te] PORWMNRCUJJQNO-UHFFFAOYSA-N 0.000 claims 1
- BKVIYDNLLOSFOA-UHFFFAOYSA-N thallium Chemical compound [Tl] BKVIYDNLLOSFOA-UHFFFAOYSA-N 0.000 claims 1
- 238000010008 shearing Methods 0.000 description 23
- 230000000694 effects Effects 0.000 description 7
- 238000002474 experimental method Methods 0.000 description 6
- 150000002739 metals Chemical class 0.000 description 6
- 230000007423 decrease Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 238000005219 brazing Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- QAAXRTPGRLVPFH-UHFFFAOYSA-N [Bi].[Cu] Chemical compound [Bi].[Cu] QAAXRTPGRLVPFH-UHFFFAOYSA-N 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011812 mixed powder Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 229910002058 ternary alloy Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
Landscapes
- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
Description
【発明の詳細な説明】
この発明は、大電流しや断性能に優れ、かつ耐
電圧性能の良好な真空しや断器用接点材料に関す
るものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a contact material for a vacuum shield which has excellent large current breaking performance and good withstand voltage performance.
真空しや断器は、その無保守、無公害性、優れ
たしや断性能等の利点を持つため、適用範囲が急
速に拡大して来ている。また、それに伴い、より
大きなしや断容量や高い耐電圧が要求されてい
る。一方、真空しや断器の性能は真空容器内の接
点材料によつて決定される要素がきわめて大であ
る。 Vacuum sheath breakers have advantages such as maintenance-free, non-polluting properties, and excellent sheath breaker performance, so the scope of their application is rapidly expanding. In addition, along with this, a larger shearing capacity and a higher withstand voltage are required. On the other hand, the performance of a vacuum shield breaker is determined to a large extent by the contact material inside the vacuum container.
真空しや断器用接点材料の満足すべき特性とし
て、(1)しや断容量が大きいこと、(2)耐電圧が高い
こと、(3)接触抵抗が小さいこと、(4)溶着力が小さ
いこと、(5)接点消耗量が小さいこと、(6)さい断電
流値が小さいこと、(7)加工性が良いこと、(8)十分
な機械的強度を有すること、等がある。 Satisfactory characteristics of contact materials for vacuum shield disconnectors include (1) large shield breaking capacity, (2) high withstand voltage, (3) low contact resistance, and (4) low welding force. (5) low contact wear, (6) low cutting current, (7) good workability, and (8) sufficient mechanical strength.
実際の接点材料では、これらの特性を全て満足
させることは、かなり困難であつて、一般には用
途に応じて特に重要な特性を満足させ、他の特性
をある程度犠性にした材料を使用しているのが実
状である。 In actual contact materials, it is quite difficult to satisfy all of these properties, and in general, materials that satisfy particularly important properties depending on the application and sacrifice other properties to some extent are used. The reality is that there are.
従来、この種の接点材料として銅−ビスマス
（以下Cu−Biと表示する。他の元素および元素の
組み合せからなる材料についても同様に元素記号
で表示する）、Cu−Cr−Bi、Cu−Cp−Bi、Cu−Cr
等が使用されていた。しかし、Cu−Bi等の低融点
金属を含有する接点では排気工程中の高温加熱に
より、その一部が接点内から拡散、蒸発し、真空
容器内の金属シールドや絶縁容器に付着する。こ
れが真空しや断器の耐電圧を劣化させる大きな因
子の一つになつている。また、負荷開閉や大電流
しや断時にも低融点金属の蒸発、飛散が生じて耐
電圧の劣化、しや断性能の低下が見られる。上記
の欠点を除くために真空耐電圧に優れたCr、Cpな
どを添加したCu−Cr−Biなどにおいても低融点金
属による上記の欠点は根本的に解決されず、高電
圧、大電流には対応できない。一方、Cu−Crな
どのように真空耐電圧に優れた金属（Cr、Cpな
ど）と電気伝導度に優れたCuとの組み合せから
なる材料は耐溶着性能に関しては低融点金属を含
有する接点材料に比較して、やや劣るが、しや断
性能や耐電圧性能が優れているため、高電圧、大
電流域ではよく使用されている。さらに、Cu−
Crなどにおいても、しや断性能には限界があるた
めに接点の形状を工夫し、接点部の電流経路を操
作することで、磁場を発生させ、この力で大電流
アークを強制駆動して、しや断性能を上げる努力
がなされていた。 Conventionally, this type of contact material has been copper-bismuth (hereinafter referred to as C u -B i . Materials made of other elements and combinations of elements are also indicated by element symbols), C u -C r -B i , C u −C p −B i , C u −C r
etc. were used. However, in a contact containing a low melting point metal such as C u -B i , a portion of the metal diffuses and evaporates from within the contact due to high temperature heating during the evacuation process, and adheres to the metal shield or insulating container in the vacuum container. This is one of the major factors that degrades the withstand voltage of vacuum shields and disconnectors. In addition, low-melting point metals evaporate and scatter when a load is switched on and off or when a large current is interrupted, resulting in deterioration of withstand voltage and deterioration of shearing performance. In order to eliminate the above-mentioned disadvantages, C u −C r −B i , etc., which are added with C r , C p , etc., which have excellent vacuum withstand voltage, do not fundamentally solve the above-mentioned disadvantages due to low melting point metals, and high voltage , cannot handle large currents. On the other hand, materials such as C u −C r , which are made of a combination of metals with excellent vacuum withstand voltage (C r , C p, etc.) and C u with excellent electrical conductivity, have low melting point metals in terms of welding resistance. Although it is slightly inferior to contact materials containing , it has excellent shearing performance and withstand voltage performance, so it is often used in high voltage and large current ranges. Furthermore, C u −
Since there is a limit to the shearing performance of C r , etc., by devising the shape of the contact and manipulating the current path of the contact, a magnetic field is generated, and this force is used to forcibly drive a large current arc. Therefore, efforts were being made to improve the shearing performance.
しかし、大電流化、高電圧化への要求はさらに
きびしく、従来の接点材料では要求性能を十分満
足させることが困難となつている。又、真空しや
断器の小型化に対しても同様に従来の接点性能で
は十分でなく、より優れた性能を持つ接点材料が
求められていた。 However, the demands for larger currents and higher voltages have become even more demanding, and it has become difficult to fully satisfy the required performance with conventional contact materials. Furthermore, in order to reduce the size of vacuum shields and disconnectors, conventional contact performance is not sufficient, and there is a need for contact materials with even superior performance.
この発明は上記のような従来のものの欠点を除
去するためになされたもので、大電流しや断性能
に優れ、かつ耐電圧性能の良好な真空しや断器用
接点材料を提供することを目的としている。 This invention was made in order to eliminate the drawbacks of the conventional products as described above, and the purpose is to provide a contact material for vacuum shields and disconnectors that has excellent large current breaking performance and good withstand voltage performance. It is said that
発明者等はCuに種々の金属、合金、金属間化
合物を添加した接点材料を試作し、真空スイツチ
管に組み込んで種々の実験を行なつた。これまで
に、先行技術（特願昭57−192785号明細書）とし
て、Cu、Cr、Taから構成されている材料のしや
断性能が従来品（Cu−25重量％Cr合金）に比較
して非常に優れていることを見出しているが、従
来品のしや断容量に対して1.5倍のしや断容量を
得るためにはTaを５〜25重量％の範囲添加させ
なければならなかつた。 The inventors prototyped contact materials by adding various metals, alloys, and intermetallic compounds to Cu , and conducted various experiments by incorporating them into vacuum switch tubes. As a prior art (Japanese Patent Application No. 192785/1985), it has been reported that the shearing performance of a material composed of C u , C r , and T a is higher than that of a conventional product (C u −25% by weight C r However, in order to obtain a shearing capacity 1.5 times that of conventional products, T a must be in the range of 5 to 25% by weight. I had to add it.
そこで、この一般に高価な材料であるTaの添
加量をできるだけ少なくして、有効にしや断性能
を向上させるために種々の実験を行なつた。この
結果、Cu、Cr、Taを主成分として、Alを少量添
加した場合にTa量を少なくしても非常にしや断
性能が優れ、耐電圧性能が良好であることがわか
つた。さらに、少量のAl添加によつてTa量のあ
る範囲でAlを添加しない場合に比べて著しく、
しや断性能が向上することも見出した。この発明
の真空しや断器用接点材料はCuを含有すると共
に、他の成分としてCrが10〜35重量％、Taが１
〜20重量％以下で、かつ、Alが３重量％以下の
範囲含有することを特徴としている。 Therefore, various experiments were conducted in order to reduce the amount of T a , which is generally an expensive material, added as much as possible to improve the effective shear cutting performance. As a result, it was found that when Cu , Cr , and Ta are the main components, and a small amount of Al is added, even if the amount of Ta is reduced, the damping performance is excellent and the withstand voltage performance is good. . Furthermore, by adding a small amount of Al, the amount of Ta within a certain range is significantly lower than when no Al is added.
It was also found that the shear cutting performance was improved. The contact material for a vacuum shield or disconnection according to the present invention contains Cu , and other components include 10 to 35% by weight of Cr and 1% by weight of T a.
It is characterized by containing Al in a range of 20% by weight or less and 3% by weight or less.
以下、この発明の一実施例を図について説明す
る。 An embodiment of the present invention will be described below with reference to the drawings.
第１図は真空スイツチ管の構造図で、真空絶縁
容器１と、この真空絶縁容器１の両端を閉塞する
端板２および３とにより形成された容器内部に電
極４および５が、それぞれ電極棒６および７の一
端に、お互いが対向するよう配置されている。前
記電極７は、ベローズ８を介して前記端板３に気
密を損うことなく軸方向の動作が可能なように接
合されている。シールド９および１０がアークに
より発生する蒸気で汚染されることがないよう、
それぞれ前記真空絶縁容器１の内面および前記ベ
ローズ８を覆つている。電極５は第２図のよう
に、その背面で電極棒７にろう材５１を介挿して
ろう付されている前記電極４，５はこの発明の
Cu−Cr−Ta−Al系接点材料から成つている。 FIG. 1 is a structural diagram of a vacuum switch tube, in which electrodes 4 and 5 are installed inside a container formed by a vacuum insulating container 1 and end plates 2 and 3 that close both ends of the vacuum insulating container 1, respectively. 6 and 7 are arranged so as to face each other. The electrode 7 is joined to the end plate 3 via a bellows 8 so as to be movable in the axial direction without compromising airtightness. To prevent shields 9 and 10 from being contaminated with vapor generated by the arc,
They cover the inner surface of the vacuum insulating container 1 and the bellows 8, respectively. As shown in FIG. 2, the electrode 5 is brazed to the electrode rod 7 by inserting a brazing material 51 on its back surface.The electrodes 4 and 5 are of the present invention.
It is made of C u −C r −T a −Al-based contact material.
第３図は合金中のCr量を25重量％に固定し、さ
らにTa量を０，１，５，10，15，20，25重量％
に固定した合金に添加したAl量としや断容量の
関係を示したものである。 Figure 3 shows that the amount of C r in the alloy is fixed at 25% by weight, and the amount of Ta is 0, 1, 5, 10, 15, 20, and 25% by weight.
This figure shows the relationship between the amount of Al added to the alloy fixed at and the shear shear capacity.
図の縦軸は従来品（Cu−25Cr品）のしや断容
量を１とした場合の比率を示し、横軸はAlの添
加量を示す。図中Ａは従来品（Cu−25Cr品）の
しや断容量である。図からわかるように各Ta量
に対してAlの添加量は0.6重量％のとき、しや断
容量のピークがあり、Alの添加によつてしや断
性能の向上が見られるが、Ta量が20重量％以上
になるとAlの効果がなくなり、むしろ、しや断
性能の低下が生じる。また、Al添加の効果はTa
量が少ないほど有効であり、Ta量は１重量％に
対してAlを0.6重量％加えた場合は従来品（Cu−
25重量％Cr品）の1.35倍のしや断容量を示す。ま
た、Ta量が10重量％の場合にはAl量0.6重量％添
加することにより、従来品の1.85倍以上のしや断
容量が得られる。即ち、Ta量の比較的少ない場
合にはAlが他の元素と適度に反応して形成され
る合金や化合物が均一微細に分散して、しや断性
能を著しく上昇させ、しかもCu量が十分にある
ので電気伝導度や熱伝導度を低下させることもな
いので、アークによる熱入力をすみやかに放散す
ることができる。しかしTa量が多くなると、必
然的にCu量の割合が低下するので、そのCuとAl
が反応して形成される化合物そのものはしや断性
能を上昇させる要素を持つていても電気伝導度や
熱伝導度を低下させる悪影響のほうが大きくな
り、Alと他の元素の反応で生じるしや断性能向
上要素を打ち消して、トータルとしてのしや断性
能は向上しないためであると思われる。又同じ
Ta量ではAlが効果を示す適度な量を越えて多量
になるとやはり電気伝導度や熱伝導度が著しく低
下するので好ましくない。また、各Taに対して、
しや断性能から見ると、Alは0.6重量％添加する
のが最も好ましい。なお、この実験に使用した、
Cu−Cr−Ta−Al合金はCu、Cr、Ta、Al粉を各々
必要量配合した混合粉を成形、焼結して得られた
ものである。 The vertical axis of the figure shows the ratio when the shearing capacity of the conventional product (C u -25C r product) is set to 1, and the horizontal axis shows the amount of Al added. A in the figure is the shear capacity of the conventional product (C u -25C r product). As can be seen from the figure, the shearing capacity peaks when the amount of Al added is 0.6% by weight for each amount of T a , and an improvement in the shearing performance can be seen by adding Al. When the amount of a exceeds 20% by weight, the effect of Al disappears, and on the contrary, the shearing performance deteriorates. Also, the effect of Al addition is T a
The smaller the amount, the more effective it is, and when 0.6% by weight of Al is added to 1% by weight of Ta , the conventional product (C u −
Shows 1.35 times more shearing capacity than 25wt% C r product). Further, when the Ta amount is 10% by weight, by adding 0.6% by weight of Al, a shearing capacity 1.85 times or more than that of the conventional product can be obtained. In other words, when the amount of Ta is relatively small, the alloys and compounds formed by the moderate reaction of Al with other elements are uniformly and finely dispersed, significantly increasing the shearing performance, and the amount of Cu is relatively small. Since there is a sufficient amount of heat, the electrical conductivity and thermal conductivity are not reduced, so that the heat input by the arc can be quickly dissipated. However, as the amount of T a increases, the ratio of the amount of C u inevitably decreases, so the amount of C u and Al
Although the compound formed by the reaction between Al and other elements itself has elements that improve the insulation and breaking performance, it has a greater negative effect of lowering electrical conductivity and thermal conductivity. This seems to be because the elements that improve shearing performance are canceled out, and the total shearing and shearing performance does not improve. Same again
If the amount of Ta exceeds a moderate amount in which Al exhibits an effect, the electrical conductivity and thermal conductivity will decrease significantly, which is not preferable. Also, for each T a ,
From the viewpoint of shearing performance, it is most preferable to add 0.6% by weight of Al. In addition, used in this experiment,
The C u -C r -T a -Al alloy is obtained by molding and sintering a mixed powder containing required amounts of each of Cu , Cr , Ta , and Al powders.
なお、第３図の縦軸は従来品（Cu−25Cr品）
のしや断容量を１とした場合の比率を示し、横軸
はAlの添加量を示す。図中Ａは従来品（Cu−
25Cr品）のしや断容量である。 The vertical axis in Figure 3 is the conventional product (C u −25C r product).
The ratio is shown when the shearing capacity is set to 1, and the horizontal axis shows the amount of Al added. In the figure, A is the conventional product (C u −
25C r product).
第４図は合金中のCr量を25重量％に固定し、さ
らに、Al量を０，0.6，1.0，1.5，3.0重量％に固
定した場合のTa量としや断容量との関係を示し
たものであり、図の縦軸は従来品（Cu−25Cr品）
のしや断容量を１とした場合の比率を示し、横軸
はTaの添加量を示す。第４図からわかるように、
Al量が0.6重量％のときAl添加によるしや断容量
増大の効果が見られるのはTa量が20重量％以下
で最も広範囲である。一方、Al添加量はTa量が
非常に少ない場合（２重量％以下）には３重量％
以下の範囲で効果的であるが、３重量％を越える
としや断性能や接触抵抗などが低下して好ましく
ない。 Figure 4 shows the relationship between the Ta content and the shear shear capacity when the C r content in the alloy is fixed at 25% by weight and the Al content is fixed at 0, 0.6, 1.0, 1.5, and 3.0% by weight. The vertical axis of the figure is the conventional product (C u −25C r product).
The ratio is shown when the shedding capacity is taken as 1, and the horizontal axis shows the amount of T a added. As can be seen from Figure 4,
When the amount of Al is 0.6% by weight, the effect of increasing the shear capacity due to the addition of Al is seen in the widest range when the amount of Ta is 20% by weight or less. On the other hand, the amount of Al added is 3% by weight when the amount of Ta is very small (2% by weight or less).
It is effective in the following range, but if it exceeds 3% by weight, the welding performance and contact resistance deteriorate, which is not preferable.
以上の結果からCu−Cr−Taの３元合金に対し
て、Alを添加することによつて３元合金のしや
断性能をより向上させるためにはAlは0.8重量％
以下、Ta量は５〜18重量％の範囲が望ましい。
さらに、Taの添加量をできるだけ低減して、優
れたしや断性能を得る条件としてはTa量が15重
量％以下の範囲が望ましい。 From the above results, in order to further improve the shearing performance of the ternary alloy of C u -C r -T a by adding Al, it is necessary to add 0.8% by weight of Al.
Hereinafter, the amount of T a is preferably in the range of 5 to 18% by weight.
Furthermore, as a condition for obtaining excellent shear cutting performance by reducing the amount of Ta added as much as possible, it is desirable that the amount of Ta be in a range of 15% by weight or less.
発明者らは第３図、第４図に示すような実験を
Cr量を種々変化させて行なつたが、Cr量が10〜35
重量％の範囲でAl添加によるしや断性能の向上
が見られたが、Cr量が10重量％より少ない範囲で
はAlを添加しても変化はなく、逆にCr量が35重
量％を越えるとしや断性能の低下も生じる。 The inventors conducted experiments as shown in Figures 3 and 4.
The experiment was carried out by varying the amount of C r , but the amount of C r was 10 to 35.
An improvement in shear cutting performance was observed with the addition of Al in the range of Cr content less than 10 wt%, but there was no change even if Al was added in the range where the Cr content was less than 10 wt%, and conversely, when the Cr content was 35 wt% Exceeding this also results in a decrease in shear cutting performance.
一方、Cu−Cr−Ta−Al系合金でCrを10〜35重
量％、Taを20重量％以下、Alを３重量％以下の
範囲含有する接点材料は従来品（Cu−25Cr品）
と比較して、接触抵抗も劣ることはなく、耐電圧
性能も同等に良好であることを図示しないが種々
の実験で確認している。 On the other hand , the conventional contact material ( Cu −25C r product)
It has been confirmed through various experiments (not shown) that the contact resistance is not inferior and the withstand voltage performance is equally good.
また、図示しないが、上記合金にBi、Te、Sb、
Tl、Pb、Se、Ce及びCaのうちの少なくとも１つ
の低融点金属、その合金、その金属間化合物、並
びにその酸化物のうち少なくとも１種を20重量％
以下添加した低さい断真空しや断器用接点におい
ても、前記実施例と同様にしや断性を上昇させる
効果があることを確認している。 Although not shown, the above alloy has B i , T e , S b ,
20% by weight of at least one low melting point metal of Tl, P b , S e , C e and Ca , its alloy, its intermetallic compound, and its oxide
It has been confirmed that the low shear vacuum insulation and breaker contacts added below have the same effect of increasing the insulation resistance as in the above example.
なお、低融点金属、その合金、その金属間化合
物、並びにその酸化物のうち少なくとも１種を20
重量％以上添加した場合には著しく、しや断性能
が低下した。又、低融点金属がCeあるいはCaの
場合は若干特性が劣る。 In addition, at least one of the low melting point metals, their alloys, their intermetallic compounds, and their oxides is 20%
When more than % by weight was added, the shearing performance decreased significantly. Furthermore, when the low melting point metal is C e or C a , the properties are slightly inferior.
なお上記実施例では、この発明をCu−Cr−Ta
−Al合金により説明したが、上記合金の各元素
が単体、四者、三者もしくは二者の合金、四者、
三者もしくは二者の金属間化合物又はそれらの複
合体として分布している場合にも所期の目的を達
することは明らかである。 In addition, in the above embodiment, this invention is described as C u −C r −T a
-Although the explanation is based on Al alloy, each element in the above alloy may be a single element, four elements, an alloy of three elements, two elements, four elements,
It is clear that the intended purpose can also be achieved when distributed as three or two intermetallic compounds or complexes thereof.
以上のように、この発明によれば、銅を含有す
ると共に他の成分としてクロムが10〜35重量％タ
ンタルが20重量％以下で、かつアルミニウムが３
重量％以下の範囲含有することを特徴とするもの
であるので、Ta量を少なくしても、しや断性能
に優れ、かつ良好な耐電圧性能を有する真空しや
断器用接点材料が得られる効果がある。 As described above, according to the present invention, in addition to containing copper, other components include chromium of 10 to 35% by weight, tantalum of 20% by weight or less, and aluminum of 3% by weight or less.
Since it is characterized by containing within the range of % by weight or less, it is possible to obtain a contact material for vacuum shield breakers that has excellent shearing performance and good withstand voltage performance even if the amount of Ta is small. It has the effect of
さらにタンタルを５〜18重量％、アルミニウム
を0.8重量％以下の範囲に限定すると、チタンを
添加しない場合よりしや断性能が向上する。 Further, when tantalum is limited to 5 to 18% by weight and aluminum is limited to 0.8% by weight or less, the shearing performance is improved compared to the case where titanium is not added.
第１図は一般的な真空スイツチ管の構造を示す
断面図、第２図はその第１図の電極部分の拡大断
面図、第３図はこの発明の実施例の接点材料にお
けるCr量を25重量％に固定し、Ta量を０，１，
５，10，15，20，25重量％に固定した合金に対し
てAl添加量を変化させた時のしや断容量の変化
を示す特性図、第４図はこの発明の実施例の接点
材料におけるCr量を25重量％に固定し、Al量を
０，0.6，1.0，1.5，3.0重量％に固定した合金に
対してTa量を変化させた時のしや断容量の変化
を示す特性図である。
図において、１は真空絶縁容器、２，３は端
板、４，５は電極、６，７は電極棒、８はベロー
ズ、９，１０はシールド、５１はろう材、Ａは従
来品（Cu−25Cr品）のしや断容量である。
Fig. 1 is a sectional view showing the structure of a general vacuum switch tube, Fig. 2 is an enlarged sectional view of the electrode portion of Fig. 1, and Fig. 3 shows the amount of Cr in the contact material of the embodiment of this invention. It is fixed at 25% by weight, and the amount of T a is set to 0, 1,
A characteristic diagram showing the change in shear capacity when changing the amount of Al added to the alloy fixed at 5, 10, 15, 20, and 25% by weight. Figure 4 shows the contact material of the embodiment of this invention. The figure shows the change in shear capacity when the T a content is changed for alloys in which the C r content is fixed at 25 wt% and the Al content is fixed at 0, 0.6, 1.0, 1.5, and 3.0 wt%. It is a characteristic diagram. In the figure, 1 is a vacuum insulated container, 2 and 3 are end plates, 4 and 5 are electrodes, 6 and 7 are electrode rods, 8 is a bellows, 9 and 10 are shields, 51 is a brazing material, and A is a conventional product (C u −25C r product).
Claims (1)
が10〜35重量％、タンタルが20重量％以下で、か
つアルミニウムが３重量％以下の範囲含有するこ
とを特徴とする真空しや断器用接点材料。 ２ アルミニウムが0.8重量％以下の範囲含有す
ることを特徴とする特許請求の範囲第１項記載の
真空しや断器用接点材料。 ３ タンタルが５〜18重量％の範囲含有すること
を特徴とする特許請求の範囲第１項又は第２項に
記載の真空しや断器用接点材料。 ４ タンタルが５〜15重量％の範囲含有すること
を特徴とする特許請求の範囲第１項又は第２項に
記載の真空しや断器用接点材料。 ５ ビスマス、テルル、アンチモン、タリウム、
鉛、セレン、セリウム及びカルシウムのうちの少
なくとも１つの低融点金属、その合金その金属間
化合物、並びにその酸化物のうちの少なくとも１
種を20重量％以下含有していることを特徴とする
特許請求の範囲第１項ないし第４項のいずれかに
記載の真空しや断器用接点材料。[Scope of Claims] 1. A vacuum characterized by containing copper and other components such as chromium in a range of 10 to 35% by weight, tantalum in a range of 20% by weight or less, and aluminum in a range of 3% by weight or less. Contact material for wire breakers. 2. The contact material for a vacuum shield or breaker according to claim 1, which contains aluminum in a range of 0.8% by weight or less. 3. The contact material for a vacuum shield or breaker according to claim 1 or 2, which contains tantalum in a range of 5 to 18% by weight. 4. The contact material for a vacuum shield or breaker according to claim 1 or 2, which contains tantalum in a range of 5 to 15% by weight. 5 Bismuth, tellurium, antimony, thallium,
At least one low melting point metal of lead, selenium, cerium and calcium, its alloys, its intermetallic compounds, and at least one of its oxides
The contact material for a vacuum shield or disconnection switch according to any one of claims 1 to 4, characterized in that it contains 20% by weight or less of seeds.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7661683A JPS59201332A (en) | 1983-04-28 | 1983-04-28 | Contact material for vacuum breaker |
| US06/547,218 US4517033A (en) | 1982-11-01 | 1983-10-31 | Contact material for vacuum circuit breaker |
| DE8383110920T DE3378088D1 (en) | 1982-11-01 | 1983-11-02 | Contact material for vacuum circuit breaker |
| EP83110920A EP0110176B1 (en) | 1982-11-01 | 1983-11-02 | Contact material for vacuum circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7661683A JPS59201332A (en) | 1983-04-28 | 1983-04-28 | Contact material for vacuum breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59201332A JPS59201332A (en) | 1984-11-14 |
| JPH0449733B2 true JPH0449733B2 (en) | 1992-08-12 |
Family
ID=13610276
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7661683A Granted JPS59201332A (en) | 1982-11-01 | 1983-04-28 | Contact material for vacuum breaker |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59201332A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010109979A1 (en) | 2009-03-25 | 2010-09-30 | ユニ・チャーム株式会社 | Absorptive article |
-
1983
- 1983-04-28 JP JP7661683A patent/JPS59201332A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010109979A1 (en) | 2009-03-25 | 2010-09-30 | ユニ・チャーム株式会社 | Absorptive article |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59201332A (en) | 1984-11-14 |
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