JPS60251237A - Contact material - Google Patents
Contact materialInfo
- Publication number
- JPS60251237A JPS60251237A JP10787684A JP10787684A JPS60251237A JP S60251237 A JPS60251237 A JP S60251237A JP 10787684 A JP10787684 A JP 10787684A JP 10787684 A JP10787684 A JP 10787684A JP S60251237 A JPS60251237 A JP S60251237A
- Authority
- JP
- Japan
- Prior art keywords
- contact material
- contact
- silver
- composite oxide
- oxide
- 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.)
- Pending
Links
Landscapes
- Conductive Materials (AREA)
Abstract
Description
【発明の詳細な説明】
〔技術分野〕
この発明は、電気接点材料の組成、具体的には鎖中に金
属複合酸化物や金属酸化物を分散して構成された電気接
点材料の組成に関するものであり、ブレーカ、リレー、
その他スイッチング素子を備えた各種の接点として特に
有用な中電流用接点材料に関するものである。[Detailed Description of the Invention] [Technical Field] This invention relates to the composition of an electrical contact material, specifically to the composition of an electrical contact material composed of a metal composite oxide or a metal oxide dispersed in a chain. and breakers, relays,
The present invention also relates to medium-current contact materials particularly useful as various types of contacts equipped with other switching elements.
従来から、中電流用接点材料として、銀−金属酸化物の
内部酸化、焼結による接点が提案されている。この銀−
金属酸化物接点として、Ａｇ−Ｃｄｏ、Ａｇ ５ｎ０２
．Ａｇ ＺｎＯ，Ａｇ Ｉｎ２０３ 、Ａｇ Ｂ １２
０３などがあり、マタ、銀と上記各酸化物の２種類ある
いはそれ以上の組合せからなるものもある。Conventionally, contacts made of internal oxidation and sintering of silver-metal oxide have been proposed as medium-current contact materials. This silver-
As metal oxide contacts, Ag-Cdo, Ag 5n02
．． Ag ZnO, Ag In203, Ag B 12
03, etc., and some are made of a combination of two or more of the above-mentioned oxides, silver and silver.
ところが、最近のブレーカ、リレー等の電磁継電器やス
イッチでは、小形化の要求がある一方、通電ならびに開
閉電力容量が大きいことも要求され、それに必要なコン
タクト材料の選定、開発が大きく望まれている。特に、
耐溶着特性の向上が要求されている。However, in recent years, electromagnetic relays and switches such as breakers and relays are required to be miniaturized, but they are also required to have large energizing and switching power capacities, and there is a great need for the selection and development of contact materials necessary for this. . especially,
There is a demand for improved welding resistance.
以上の要求に応じるため、銀に添加する粒子について検
討が進められている。しかし、いずれにも、種々の問題
がある。In order to meet the above requirements, studies are underway on particles to be added to silver. However, both methods have various problems.
たとえば、５ｎ０２を分散すれば、耐消耗性の向上はあ
るが、接触抵抗が不安定となる。また、ＣｄＯを分散す
れば、接触抵抗は安定であるが、耐溶着性は劣る。この
ように、酸化物だけでは、接点特性の向上は難しいと言
うのが、現状である〔発明の目的〕
この発明は、以上の事実に鑑みてなされたもので、耐溶
着性、耐消耗性にすぐれた性能をもつ接点材料を提供す
ることを目的とする。For example, if 5n02 is dispersed, the wear resistance will be improved, but the contact resistance will become unstable. Furthermore, if CdO is dispersed, the contact resistance is stable, but the welding resistance is poor. As described above, it is currently difficult to improve contact characteristics using oxides alone. [Objective of the Invention] This invention was made in view of the above facts. The purpose is to provide contact materials with excellent performance.
この発明は、銀に対し、銀よりも融点の低い複合酸化物
、またはこれと酸化物を分散させてなる接点材料を要旨
とするものである。以下、この発明の詳細な説明する。The gist of the present invention is to provide a contact material made of a composite oxide of silver, which has a melting point lower than that of silver, or a composite oxide in which this and an oxide are dispersed. The present invention will be explained in detail below.
従来、銀に分散する酸化物等の粒子は、熱に安定なもの
、銀の融点近くに昇華点を持つものなどで、常に接点上
で固体として存在している。Conventionally, particles such as oxides dispersed in silver are thermally stable or have a sublimation point near the melting point of silver, and always exist as a solid on the contact point.
この発明の接点材料は、分散する粒子が、銀の融点より
も低い融点を持つものであり、開閉時、通電時に液体状
態で存在するものと考えている。In the contact material of the present invention, the dispersed particles have a melting point lower than that of silver, and are considered to exist in a liquid state during opening/closing and energization.
ＬｉＰｂ複合酸化物、ＬｉＢ１複合酸化物は、共に、融
点が５００℃〜６００℃にあり、接点開閉時には溶融し
、耐溶着特性を向上させると考えられる。これらとして
は、例えばＬｉＢｉＯ２（５３７℃）、Ｌｉ３ Ｂ１０
４ （５８８℃）、Ｌｉ２ＰｂＯ３（５３６℃）などが
ある。Both the LiPb composite oxide and the LiB1 composite oxide have melting points in the range of 500°C to 600°C, melt when the contacts are opened and closed, and are thought to improve welding resistance. These include, for example, LiBiO2 (537°C), Li3 B10
4 (588°C), Li2PbO3 (536°C), etc.
複合酸化物では、２つ以上の元素を銀マトリツクス上に
分散させるため、それぞれの元素の特徴を使うことが可
能となる。特に開閉時のアーク放電では、元素の状態と
なるため、仕事関数の低い元素が含まれていると、アー
ク特性が向上する。In composite oxides, two or more elements are dispersed on a silver matrix, making it possible to utilize the characteristics of each element. Particularly during arc discharge during opening and closing, the material is in an elemental state, so if an element with a low work function is included, the arc characteristics will be improved.
必要に応じ、銀の融点より低い融点を併せて添加しても
よい。If necessary, a material having a melting point lower than that of silver may also be added.
複合酸化物またはこれと酸化物とは、体積パーセントで
０．０１〜３０％添加されるのが好ましい以下に実施例
を比較例と併せて述べる。The composite oxide or its oxide is preferably added in an amount of 0.01 to 30% by volume. Examples will be described below along with comparative examples.
（実施例）
Ａｇマトリックス中にＬｉＰｂＯ３の粒子が分散する接
点材料を準備し、接点を作製して、接点特性評価試験を
行った。上記接点材料は、Ａｇ合金を内部酸化してＬｉ
酸化物、ｐｂ酸化物の体積パーセントが５％ずつになる
ようにしたものである。(Example) A contact material in which LiPbO3 particles are dispersed in an Ag matrix was prepared, a contact was produced, and a contact characteristic evaluation test was conducted. The above contact material is made by internally oxidizing the Ag alloy and
The volume percentages of the oxide and the pb oxide were each 5%.
Ａｇ合金は、高周波溶解炉で作製し、２ｃＩＩ×１ｃｍ
角のインゴットとし、焼鈍後、厚さ１ｍｍの板材として
切り出した。この板材から直径５ｍｍに打抜いた。この
打抜き材に対し、酸素圧４気圧、７００′Ｃで６０時間
、さらに酸素圧４気圧、８００℃で６０時間内部酸化を
行った。内部酸化後、銅台座にろう付けし、接点とした
。The Ag alloy was made in a high-frequency melting furnace and was sized 2cII×1cm.
A square ingot was prepared, and after annealing, it was cut into a plate with a thickness of 1 mm. This plate material was punched out to a diameter of 5 mm. This punched material was subjected to internal oxidation at an oxygen pressure of 4 atm and 700'C for 60 hours, and then at an oxygen pressure of 4 atm and 800C for 60 hours. After internal oxidation, it was brazed to a copper pedestal and used as a contact.
接点評価試験は、ＡＳＴＭ接点試験機を用いて行った。The contact evaluation test was conducted using an ASTM contact tester.
その際、負荷は、１００Ｖで、突入１１８Ａ、定常２Ｏ
Ａ、接触力ｉ ｏ ｏ ｇ、解離力１５０ｇで１万回開
閉を行った。開閉頻度は、−秒に１回で、ｎ＝３で行っ
た。At that time, the load was 100V, inrush 118A, steady 2O
A. Opening and closing was performed 10,000 times with a contact force of io g and a dissociation force of 150 g. The opening/closing frequency was once every - second, and n=3.
実験結果を下表に示す。The experimental results are shown in the table below.
この発明は、以上のごとく、銀に対し、銀よりも融点の
低い金属複合物、または複合酸化物と酸化物を分散する
ことで、開閉中の接点表面をウェットな状態にすること
ができ、耐溶着特性を向上させることができたため、同
時に耐消耗特性、接触抵抗特性も向上させることができ
た。As described above, this invention makes it possible to make the contact surface wet during opening and closing by dispersing silver with a metal composite having a melting point lower than that of silver, or a composite oxide and an oxide. Because we were able to improve the welding resistance, we were also able to improve the wear resistance and contact resistance characteristics at the same time.
代理人 弁理士 松 本 武 彦Agent: Patent Attorney Takehiko Matsumoto
Claims (1)
はこれと酸化物を分散させてなる接点材料（２） 複合
酸化物、またはこれと酸化物とが体積パーセントで０．
０１〜３０％添加されている特許請求の範囲第１項記載
の接点材料。(Contact material made by dispersing a composite oxide with a melting point lower than that of silver, or an oxide with the composite oxide, or an oxide with respect to silver)
The contact material according to claim 1, wherein the contact material is added in an amount of 01 to 30%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10787684A JPS60251237A (en) | 1984-05-25 | 1984-05-25 | Contact material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10787684A JPS60251237A (en) | 1984-05-25 | 1984-05-25 | Contact material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60251237A true JPS60251237A (en) | 1985-12-11 |
Family
ID=14470325
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10787684A Pending JPS60251237A (en) | 1984-05-25 | 1984-05-25 | Contact material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60251237A (en) |
-
1984
- 1984-05-25 JP JP10787684A patent/JPS60251237A/en active Pending
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