JPH01320712A - Silver-oxide electric contact material - Google Patents
Silver-oxide electric contact materialInfo
- Publication number
- JPH01320712A JPH01320712A JP63153753A JP15375388A JPH01320712A JP H01320712 A JPH01320712 A JP H01320712A JP 63153753 A JP63153753 A JP 63153753A JP 15375388 A JP15375388 A JP 15375388A JP H01320712 A JPH01320712 A JP H01320712A
- Authority
- JP
- Japan
- Prior art keywords
- silver
- weight
- contact material
- alloy
- added
- 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
- 239000000463 material Substances 0.000 title claims abstract description 27
- NDVLTYZPCACLMA-UHFFFAOYSA-N silver oxide Chemical compound [O-2].[Ag+].[Ag+] NDVLTYZPCACLMA-UHFFFAOYSA-N 0.000 title description 12
- 229910001923 silver oxide Inorganic materials 0.000 title description 6
- 229910001316 Ag alloy Inorganic materials 0.000 claims abstract description 13
- 229910052738 indium Inorganic materials 0.000 claims abstract 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 19
- 229910000765 intermetallic Inorganic materials 0.000 claims description 14
- 229910044991 metal oxide Inorganic materials 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 239000006104 solid solution Substances 0.000 claims description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 abstract description 13
- 239000000956 alloy Substances 0.000 abstract description 13
- 238000002844 melting Methods 0.000 abstract description 11
- 230000008018 melting Effects 0.000 abstract description 11
- 230000003647 oxidation Effects 0.000 abstract description 9
- 238000007254 oxidation reaction Methods 0.000 abstract description 9
- 229910052718 tin Inorganic materials 0.000 abstract description 8
- 229910052749 magnesium Inorganic materials 0.000 abstract description 6
- 229910019743 Mg2Sn Inorganic materials 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 4
- 150000001875 compounds Chemical class 0.000 abstract description 3
- 239000010419 fine particle Substances 0.000 abstract description 3
- 238000005242 forging Methods 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract description 2
- 239000002344 surface layer Substances 0.000 abstract description 2
- 238000010276 construction Methods 0.000 abstract 2
- 229910018956 Sn—In Inorganic materials 0.000 abstract 1
- 229910052709 silver Inorganic materials 0.000 description 12
- 239000004332 silver Substances 0.000 description 12
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 238000003466 welding Methods 0.000 description 5
- 150000002739 metals Chemical class 0.000 description 4
- 229910052793 cadmium Inorganic materials 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 3
- 230000001590 oxidative effect Effects 0.000 description 3
- 230000000704 physical effect Effects 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000012071 phase Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- BLBNEWYCYZMDEK-UHFFFAOYSA-N $l^{1}-indiganyloxyindium Chemical compound [In]O[In] BLBNEWYCYZMDEK-UHFFFAOYSA-N 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 229910000846 In alloy Inorganic materials 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 230000002747 voluntary effect Effects 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/02—Contacts characterised by the material thereof
- H01H1/021—Composite material
- H01H1/023—Composite material having a noble metal as the basic material
- H01H1/0237—Composite material having a noble metal as the basic material and containing oxides
- H01H1/02372—Composite material having a noble metal as the basic material and containing oxides containing as major components one or more oxides of the following elements only: Cd, Sn, Zn, In, Bi, Sb or Te
- H01H1/02376—Composite material having a noble metal as the basic material and containing oxides containing as major components one or more oxides of the following elements only: Cd, Sn, Zn, In, Bi, Sb or Te containing as major component SnO2
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/02—Contacts characterised by the material thereof
- H01H1/021—Composite material
- H01H1/023—Composite material having a noble metal as the basic material
- H01H1/0237—Composite material having a noble metal as the basic material and containing oxides
- H01H1/02372—Composite material having a noble metal as the basic material and containing oxides containing as major components one or more oxides of the following elements only: Cd, Sn, Zn, In, Bi, Sb or Te
Abstract
Description
【発明の詳細な説明】 （イ）技術分野 本発明は、気中電流遮断器や大型電磁開閉器。[Detailed description of the invention] (b) Technical field The present invention relates to an air current breaker or a large electromagnetic switch.
直流回路用大容量リレー等に今日多く使用されている銀
−酸化物系電気接点材料に関するものである。This invention relates to silver-oxide electrical contact materials that are widely used today in large-capacity relays for DC circuits and the like.
かかる銀−酸化物系電気接点材料には、Ａｇ−Ｃｄ０系
、Ａｇ−３ｎ０２系、Ａｇ−ＺｎＯ系があり、これらは
Ｃｄ、Ｓｎ、Ｚｎ等の溶質金属を固溶したＡｇ合金を内
部酸化して作られるか、あるいは金属酸化物の粉末とＡ
ｇ粉末とを焼結して作られるものである。Such silver-oxide electrical contact materials include Ag-Cd0 series, Ag-3n02 series, and Ag-ZnO series, which are made by internally oxidizing an Ag alloy containing a solid solution of solute metals such as Cd, Sn, and Zn. or metal oxide powder and A
It is made by sintering G powder.
本発明は、上述したうちの前者、即ち溶質金属特にＳｎ
がＭｇとの金属間化合物として存在するＳｎ、Ｍｇ等を
固溶したＡｇ合金を内部酸化した新規な銀−酸化物電気
接点材料に関するものである。The present invention focuses on the former of the above, that is, solute metals, particularly Sn.
This invention relates to a novel silver-oxide electrical contact material in which an Ag alloy containing Sn, Mg, etc., present as an intermetallic compound with Mg, is internally oxidized.
（ロ）背景技術
上述した現在ｔｙ） Ａ ｇ −Ｃｄ Ｏ系、Ａｇ−３
ｎ０２系、Ａｇ−ＺｎＯ系の銀−酸化物系電気接点材料
では、接触抵抗の上昇と耐溶着性の劣化とが常に問題と
なる。(b) Background art As mentioned above, A g -Cd O system, Ag-3
In silver-oxide electrical contact materials such as n02 series and Ag-ZnO series, increases in contact resistance and deterioration of welding resistance always pose problems.
この問題には、相反する二つの性能に対する要求が含ま
れているので、単に酸化物の濃度を増減しても、この問
題の両者を同時に解決することにはならない難しさが伴
なっている。Since this problem includes two conflicting performance requirements, it is difficult to solve both problems at the same time simply by increasing or decreasing the oxide concentration.
例えば、従来の酸化物系材料の性能を銀−タング７テ７
系材料と比較してみると・耐久性竺接触抵抗においては
同等又はそれ以−ヒであるが、ノーヒユーズブレーカ−
の接点として使われた場合、高圧大電流の短絡時に発生
する溶着、異常消耗。For example, the performance of conventional oxide-based materials can be compared to silver-tongue.
When compared to similar materials, the durability and contact resistance are the same or higher, but they are no-fuse breakers.
When used as a contact point, welding and abnormal wear occur during short circuits of high voltage and large current.
絶縁劣化等の諸現象では劣る点が多い。It has many disadvantages in terms of various phenomena such as insulation deterioration.
（ハ）発明の開示
そこで、本発明では耐熱性酸化物として銀の溶融坩堝に
も使用されるＭｇ０（融点３０００′Ｃ）をＳｎとの金
属間化合物とし、かかる金属間化合物の組織下でＭ ｇ
ｘ Ｓ ｎ ｙ Ｏｚの共軛酸化物として、また他の
追加の溶質金属との共軛酸化物として、鋼中で内部酸化
して銀マトリツクス中に分散させるものである。(c) Disclosure of the invention Therefore, in the present invention, Mg0 (melting point 3000'C), which is also used in silver melting crucibles as a heat-resistant oxide, is made into an intermetallic compound with Sn, and Mg0 is formed under the structure of the intermetallic compound. g
It is internally oxidized in the steel and dispersed in the silver matrix as a co-conjugate oxide of x S n y Oz and as a co-conjugate oxide with other additional solute metals.
従って、たとえ５ｎ０２がアーク熱により飛散またはＡ
ｇ−３ｎに還元されたとしても、ＭｇＯ微粒子はその場
に残存して耐溶着性を保ち、かつＭｇＯ微粒子は高温下
でも硬くて銀と濡れ性がないので、表面の５ｎ−Ｉｎ合
金等の低級酸化物の飛散をも助長し、接触抵抗を一定に
するものである。Therefore, even if 5n02 is scattered due to arc heat or
Even if reduced to g-3n, the MgO fine particles remain in place and maintain welding resistance, and since the MgO fine particles are hard even at high temperatures and do not have wettability with silver, the surface of the 5n-In alloy, etc. It also promotes the scattering of lower oxides and keeps the contact resistance constant.
このようにして接触抵抗は一定に保たれるので、大容量
遮断、過負荷耐久の条件は酸化物の濃度で調節でき、そ
の遮断能力はＡｇ−Ｗ及びＡｇ−Ｗ系の接点材料に近づ
くことができる。In this way, the contact resistance is kept constant, so the conditions for large-capacity interruption and overload durability can be adjusted by adjusting the oxide concentration, and its interruption ability approaches that of Ag-W and Ag-W-based contact materials. I can do it.
本発明にあっては、Ｍ ｇ ？ Ｓ ｎの量の北限値は
鋼中への固溶限内でかつ完全に内部酸化が可能な範囲内
であって、それぞれ５重量％と１０重量％であり、それ
らの下限値はそれぞれ１重量％と３重量％である。In the present invention, M g ? The northern limit of the amount of Sn is within the solid solubility limit in steel and within the range where complete internal oxidation is possible, and is 5% by weight and 10% by weight, respectively, and the lower limit is 1% by weight, respectively. % and 3% by weight.
上記の下限値で特にＳｎの下限値は、得られる接点材料
が中電流用として用いられるときに、その耐溶着性が保
証され得る最低の量である。Among the above lower limit values, the lower limit value of Sn in particular is the lowest amount that can guarantee welding resistance when the resulting contact material is used for medium current applications.
また、上述したところから明らかな通り、ＭｇとＳｎが
銀との固溶体組成中でそれらの大部分がＭｇ２Ｓｎの金
属間化合物組織となるような比率で組合せることが肝要
である。Furthermore, as is clear from the above, it is important that Mg and Sn are combined in a solid solution composition with silver in such a ratio that most of them form an intermetallic compound structure of Mg2Sn.
ちなみに、Ｓｎが３重量％でＭｇが上述した下限値であ
る１重量％のとき、Ｓｎのほとんど全量がＭｇとの金属
間化合物組織になる。Incidentally, when Sn is 3% by weight and Mg is 1% by weight, which is the above-mentioned lower limit, almost the entire amount of Sn becomes an intermetallic compound structure with Mg.
また、Ｍｇが上述した上限値である５重量％であるとき
、Ｓｎの添加量が増えてもその全量がＭｇとの金属間化
合物組織となるので、本発明のＭｇが１〜５重量％でＳ
ｎが３〜１０重量％の範囲内にある限り、Ｓｎの大部分
がＭ ｇ””２ ’ Ｓ ｎの金属間化合物組織となる
ことになる。Moreover, when Mg is 5% by weight, which is the upper limit mentioned above, even if the amount of Sn added increases, the entire amount becomes an intermetallic compound structure with Mg. S
As long as n is within the range of 3 to 10% by weight, most of the Sn will form an intermetallic compound structure of Mg''2'Sn.
勿論、量産時には溶質金属の中で特に酸化性の強いＭｇ
が溶解作業中の蒸発酸化等によって消耗して、所期の比
率の成分比に若干のぶれが生じることがあるが、本発明
の接点材の特性が大きく変化するものではない。Of course, during mass production, Mg, which has a particularly strong oxidizing property among solute metals,
may be consumed due to evaporation, oxidation, etc. during the melting process, resulting in slight fluctuations in the expected component ratio, but this does not significantly change the characteristics of the contact material of the present invention.
本発明では、−上述した通り銀の溶融液にも全く浸食さ
れないＭｇＯをＭｇ２Ｓｎの金属間化合物として鋼中に
固溶せしめるものであるが、内部酸化進行機能を持たせ
るために必要な元素としてＩｎを添加する。In the present invention, as mentioned above, MgO, which is not corroded at all even by silver melt, is dissolved in steel as an intermetallic compound of Mg2Sn, but In is a necessary element to provide the function of promoting internal oxidation. Add.
Ａｇ−３ｎ系固溶合金にＩｎを添加して内部酸′化する
ことは知られているが、この場合ＩｎのＳｎ中への拡散
速度が余りにも早くて、合金の表面部に錫の酸化物が過
度に偏析して、いわゆる「かわけ」が生じる欠陥がしば
しばみられる。It is known that In is added to Ag-3n solid solution alloys to cause internal oxidation, but in this case, the diffusion rate of In into Sn is too fast, causing oxidation of tin on the surface of the alloy. Defects are often seen where substances are excessively segregated, resulting in so-called ``separation''.
ところが、このＳｎをＭｇとの金属間化合物として内部
酸化すると、通常の内部酸化温度（６００〜８５０℃）
下では、たとえＩｎの介在があっても、酸素の進入方向
に向ってそれほどには拡散せず、現にある場所において
内部酸化されることになる。However, when this Sn is internally oxidized as an intermetallic compound with Mg, the normal internal oxidation temperature (600 to 850°C)
Below, even if In exists, it will not diffuse as much in the direction of oxygen entry and will be internally oxidized at the current location.
即ち、鋼中の全元素は化合物を含む合金として融点の高
い一定律の元素群として酸素の侵入に追従し、極めて小
範囲の拡散移動のみで内部酸化は進行する。That is, all the elements in the steel follow the intrusion of oxygen as a group of fixed elements with high melting points as alloys containing compounds, and internal oxidation progresses only through diffusion and movement in an extremely small range.
従って、一般の内部酸化複合銀合金に比較して、表層部
から中心部にわたって組織、１１１度変化が極めて少な
い材料が得られる。しかも、前述した如く化合物状態で
ある合金は一元素のみが先行して拡散するような現象は
少なく、全域にわたって等質の酸化物微粒子の分散組織
を呈し、形状も等軸な結晶となる。Therefore, compared to general internally oxidized composite silver alloys, a material with an extremely small 111 degree change in structure from the surface layer to the center can be obtained. Moreover, as mentioned above, alloys in a compound state rarely experience the phenomenon in which only one element diffuses in advance, and exhibit a homogeneous dispersed structure of fine oxide particles over the entire area, with an equiaxed crystal shape.
また、電気接点材料の性能の面からみると、酸化物の各
結晶は三元系酸化物としての物理特性をもって銀基質中
で作用し、各元素の単独の性質は実態的には現われない
有利性もある。In addition, from the perspective of the performance of electrical contact materials, each oxide crystal acts in the silver matrix with the physical properties of a ternary oxide, and the individual properties of each element have advantages that do not appear in reality. There is also gender.
ちなみに、Ｍｇ２５ｎ−Ｉｎの固溶合金の融点は５ｎ−
Ｉｎ系合金よりもはるかに高くて、高温下における硬度
も高く、従って溶着力は弱い。By the way, the melting point of Mg25n-In solid solution alloy is 5n-
It has a much higher hardness than In-based alloys, and its hardness at high temperatures is also high, so its welding strength is weak.
なお、Ｍｇ、、Ｓｎの金属間化合物の融点は、Ｍｇ（約
２９重量％）・Ｓｎ（約７１重量％）のときが最高であ
り、これを中心としてＭｇ（約１０重量％）・Ｓｎ（約
９０重量％）とＭｇ（約５０重量％）・Ｓｎ（約５０重
量％）の範囲内ではこの発明の目的に合った高融点を有
するものである。The melting point of intermetallic compounds of Mg and Sn is highest when Mg (approximately 29% by weight) and Sn (approximately 71% by weight), and around this, Mg (approximately 10% by weight) and Sn (approximately 71% by weight) have the highest melting point. Within the range of Mg (approximately 90% by weight) and Sn (approximately 50% by weight), it has a high melting point suitable for the purpose of the present invention.
従って、大電流を短絡した時に発生するアーク熱に対し
ても、構造上の融点は銀のそれよりもはるかに高く、耐
熱性は大気中で銀の融点以」−で放置しても何等の変化
もないことが立証される。Therefore, even against the arc heat generated when a large current is short-circuited, the structural melting point is much higher than that of silver, and the heat resistance is that even if left in the atmosphere at temperatures higher than the melting point of silver, It is proven that there is no change.
前述した通り、Ｍｇ、、Ｓｎの金属間化合物は、Ａｇ合
金の液相より直接に固相析出するために、その分子拡散
が非常に少ないので、本発明においてはＩｎが’Ｓｎと
共晶をなすような量、即ち０．５〜６重量％の範囲でＩ
ｎを添加するものである。As mentioned above, the intermetallic compounds of Mg and Sn precipitate directly into the solid phase from the liquid phase of the Ag alloy, so their molecular diffusion is very small. I in an amount such that
n is added.
また、本発明接点材料においては、ときにはＣｄ元素を
添加してもよい。これは、最近の電子回路保護用のブレ
ーカ−等に要求される如く、その接点材が微小電流負荷
と大電流負荷の双方に使用される場合、７２０°Ｃ近辺
で揮発性の高いＣｄＯが存在することによって、微小電
流負荷時の接触抵抗を安定させるためのものである。Further, in the contact material of the present invention, Cd element may be added sometimes. This means that when the contact material is used for both small current loads and large current loads, as is required for breakers for protecting recent electronic circuits, CdO is highly volatile at around 720°C. This is to stabilize the contact resistance during microcurrent loads.
しかし、この場合に大電流短絡時の発生ガス量は増加す
るので、用途別の要求に応じて添加する必要がある。こ
のような目的に合ったＣｄの添加級は、０．１〜５゜０
重量％の範囲内である。However, in this case, the amount of gas generated during a large current short circuit increases, so it is necessary to add it according to the requirements of each application. The addition grade of Cd suitable for this purpose is 0.1 to 5°0.
Within the range of % by weight.
また、鉄属元素は銀への固溶度が極めて少なく、かつ鍛
造効果を高めるのに効果があり、銀結晶の微細化を増す
ので、０．０１〜０．５重量％の範囲内で添加してもよ
い。In addition, ferrous elements have extremely low solid solubility in silver and are effective in increasing the forging effect and increasing the refinement of silver crystals, so they are added within the range of 0.01 to 0.5% by weight. You may.
（ニ）実施例 実施例ｌ Ｍｇ２Ｓｎの金属間化合物（Ｍｇ約２９ｗｔ％。(d) Examples Example l Intermetallic compound of Mg2Sn (about 29 wt% Mg.
Ｓｎ約７１ｗｔ％）を８０重量％とＩｎ２Ｏ重量％の配
合比になる母合金を９００°Ｃの温度下、アルゴンガス
雰囲気中で溶解、鋳造してインゴット状の母合金を作っ
た（この母合金を第１表中で符号（Ａ）で示している）
。An ingot-shaped master alloy was made by melting and casting a master alloy with a blending ratio of 80 wt% Sn (approximately 71 wt%) and In2O wt% at a temperature of 900°C in an argon gas atmosphere (this master alloy (indicated by symbol (A) in Table 1)
.
この母合金は脆弱合金であり、これを圧延粉砕して第１
表中に示す比率で銀と配合し、溶解して銀合金とした。This master alloy is a brittle alloy, which is rolled and crushed to form the first
It was mixed with silver in the ratio shown in the table and melted to obtain a silver alloy.
次に、これを鋳造、圧延して純銀板を １／１０に匹敵
する厚みで裏張りした１、０■厚の板となし、これから
４．５ｍｍφＸ １．Ｏｍｍ ｔのディスク状接点をプ
レス抜きして作り、７００°Ｃで０□３０ａｔｍの圧力
下で約４８時間保持して完全内部酸化した。（試料Ｎｏ
、 １） 。Next, this was cast and rolled into a 1.0 mm thick plate lined with a pure silver plate with a thickness comparable to 1/10, and from this 4.5 mmφX 1. A disc-shaped contact of Omm t was made by pressing and kept at 700° C. under a pressure of 0□30 atm for about 48 hours to undergo complete internal oxidation. (Sample No.
, 1).
実施例２
実施例１と同様の丁程中、鋼中に０．１重量％のＣｏ
、 ０．１重量％のＮｉ、１．５重量％のＣｄ、２重量
％のＣｄと０．１重量％のＣｏ、あるいは２．５重量％
のＣｄと０．１重量％のＦｅをそれぞれ添加して溶解し
、以後は同工程により同寸法の試料を得た。（試料Ｎｏ
、２．３，４，５．６）実施例３
第１表中に示す比率の組成分を全配合・溶解して銀合金
とした。これを実施例１と同様に鋳造・圧延して純銀を
裏張りした板とし、これからディスク状接点を得、内部
酸化した。（試料Ｎｏ、７゜比較例
また、比較例としてＡｇＡｇ−５ｎ（８％）−Ｉｎ（３
ｗｔ％） −Ｎ ｉ （０，１ｗｔ％）ならびにＡｇ
−Ｃｄ（１５ｗｔ％） −３ｎ （１，５ｗｔ％） −
Ｎｉ（０，２ｗｔ％）の同寸法の試料を上記実施例３に
準じて作成した。（試料Ｎｏ、９．１０）以下に、これ
らの試料の物理特性と電気試験の結果を示す。Example 2 During the same process as Example 1, 0.1% by weight of Co was added to the steel.
, 0.1 wt% Ni, 1.5 wt% Cd, 2 wt% Cd and 0.1 wt% Co, or 2.5 wt%
of Cd and 0.1% by weight of Fe were added and dissolved, and thereafter the same steps were performed to obtain samples of the same size. (Sample No.
, 2.3, 4, 5.6) Example 3 All the components in the ratios shown in Table 1 were blended and melted to obtain a silver alloy. This was cast and rolled in the same manner as in Example 1 to form a plate lined with pure silver, from which a disc-shaped contact was obtained and internally oxidized. (Sample No., 7° Comparative Example Also, as a comparative example, AgAg-5n(8%)-In(3
wt%) −N i (0,1 wt%) and Ag
-Cd (15wt%) -3n (1.5wt%) -
A sample of Ni (0.2 wt%) having the same dimensions was prepared according to Example 3 above. (Sample No. 9.10) The physical properties and electrical test results of these samples are shown below.
（以下余白）
（１）物理特性
第 １ 表
（ＩＩ ）電気試験
ａ）三相交流電磁開閉器（市販品）に前記した本発明の
試料と比較例の接点材料を取付け、定格２５Ａ、２２０
Ｖに対する過負荷条件の２５ＡＸ６の電流（Ｐｆ、 ０
．３ ）の開閉テストを各３器（竺相）について３万回
実施した耐久テストの結果は第２表の通りであった。(Leaving space below) (1) Physical properties Table 1 (II) Electrical test a) The contact materials of the sample of the present invention and the comparative example described above were attached to a three-phase AC electromagnetic switch (commercially available), and the ratings were 25A and 220A.
25AX6 current (Pf, 0
．． Table 2 shows the results of a durability test in which the opening/closing test of 3) was carried out 30,000 times for each of the three devices (diagonal).
ｂ） また、三相５０Ａの定格電流ブレーカ−各々３台
について２２０Ｖ、２５００Ａにおける０１ｃｏ、ｃｏ
の３回の短絡テストの結果は第３表の通りであった。b) Also, three-phase 50A rated current breakers - 01co, co at 220V, 2500A for each three units
The results of the three short circuit tests are shown in Table 3.
（以下余白）
第２表
第 ３ 表
（ホ）発明の効果
本発明の接点材料は、上記の通り電流密度の大きい負荷
条件での性能が極めて良好であり、また従来品に比較し
て大幅な改善が認められることも上記テスト結果からし
て明らかである。(Margins below) Table 2 Table 3 (e) Effects of the invention The contact material of the present invention has extremely good performance under load conditions with high current density, as described above, and has significantly improved performance compared to conventional products. It is also clear from the above test results that an improvement is observed.
また、本発明の接点材料の初期抵抗は一般的に高いが、
耐久性や遮断性では非常に優れいている。なお、この初
期抵抗も接触圧力を増したりすることこと等によっ・て
改善できるものである。In addition, although the initial resistance of the contact material of the present invention is generally high,
It has excellent durability and insulation properties. Note that this initial resistance can also be improved by increasing the contact pressure.
さらに、短絡・耐久試験後の本発明の接点材の接触面は
、従来品に比して清浄であった。また、ＣｄＯを添加す
ることにより、耐久テストにおける機械的物性（展延性
）が良くなり、その結果接点割れが少なくなることも認
められた。Furthermore, the contact surface of the contact material of the present invention after the short circuit/durability test was cleaner than that of the conventional product. It was also found that by adding CdO, mechanical properties (spreadability) in durability tests were improved, resulting in fewer contact cracks.
特 許 出 願 人 中外電気工業株式会社−手 続
補 ＴＦ 書（自発）
１．事件の表示
特願昭６３−１５３７５３号
２、発明の名称
銀−酸化物電気接点材料
３、補正をする者
事件との関係 特許出願人
名称 中外電気工業株式会社
４代理人
明細書の「特許請求の範囲」の欄
６、補止の内容
別紙の通り。Patent applicant Chugai Electric Industry Co., Ltd. - Procedures
Supplementary TF (voluntary) 1. Display of the case Japanese Patent Application No. 153753/1983 2, Name of the invention Silver-oxide electrical contact material 3, Person making the amendment Relationship to the case Name of the patent applicant Chugai Electric Industry Co., Ltd. 4 "Patent claim" in the attorney's specification Column 6 of ``Scope of Activities'', contents of the supplement as shown in the attached sheet.
２、特許請求の範囲
（１）金属成分でそれぞれ３〜１０重量％のＳｎと１〜
５重量％のＭｇと０．５〜６重量％のＩｎとを含み、こ
れらの元素を固溶しかつ該ＳｎのほとんどがＭｇとの金
属間化合物である銀合金を内部酸化した銀−金属酸化物
電気接点材料。2. Claims (1) Metal components each containing 3 to 10% by weight of Sn and 1 to 10% by weight of Sn.
Silver-metal oxide containing 5% by weight of Mg and 0.5 to 6% by weight of In, internally oxidizing a silver alloy in which these elements are dissolved in solid solution and most of the Sn is an intermetallic compound with Mg. Electrical contact materials.
（２）前記銀合金が更にＣｄを０．１〜５．０重量％含
有する特許請求の範囲第１項記載の銀−金属酸化物電気
接点材料。(2) The silver-metal oxide electrical contact material according to claim 1, wherein the silver alloy further contains 0.1 to 5.0% by weight of Cd.
（３）前記銀合金が更に鉄属元素を０．０１〜０．５重
量％含有する特許請求の範囲第１項又は第２項記載の銀
−金属酸化物電気接点材料。(3) The silver-metal oxide electrical contact material according to claim 1 or 2, wherein the silver alloy further contains 0.01 to 0.5% by weight of an iron element.
Claims (3)
１〜５重量％のＭｇと０．５〜６重量％のＩｎとを含み
、これらの元素を固溶しかつ該ＳｎのほとどがＭｇとの
金属間化合物である銀合金を内部酸化した銀−金属酸化
物電気接点材料。(1) The metal components are 3-10% by weight of Sn and 0.9% by weight, respectively.
A silver alloy containing 1 to 5% by weight of Mg and 0.5 to 6% by weight of In, in which these elements are dissolved in solid solution and most of the Sn is an intermetallic compound with Mg, was internally oxidized. Silver-metal oxide electrical contact material.
有する特許請求の範囲第１項記載の銀−金属酸化物電気
接点材料。(2) The silver-metal oxide electrical contact material according to claim 1, wherein the silver alloy further contains 0.1 to 5.0% by weight of Cd.
量％含有する特許請求の範囲第１項又は第２項記載の銀
−金属酸化物電気接点材料。(3) The silver-metal oxide electrical contact material according to claim 1 or 2, wherein the silver alloy further contains 0.01 to 0.5% by weight of an iron element.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63153753A JPH01320712A (en) | 1988-06-22 | 1988-06-22 | Silver-oxide electric contact material |
| KR1019890007257A KR900019088A (en) | 1988-06-22 | 1989-05-29 | Silver-oxide electrical contact materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63153753A JPH01320712A (en) | 1988-06-22 | 1988-06-22 | Silver-oxide electric contact material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01320712A true JPH01320712A (en) | 1989-12-26 |
Family
ID=15569369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63153753A Pending JPH01320712A (en) | 1988-06-22 | 1988-06-22 | Silver-oxide electric contact material |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPH01320712A (en) |
| KR (1) | KR900019088A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0440340A2 (en) * | 1990-01-29 | 1991-08-07 | Chugai Denki Kogyo Kabushiki Kaisha | Electrical contact materials and method of manufacturing the same |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100464868B1 (en) * | 2003-08-22 | 2005-01-15 | 희성금속 주식회사 | Electric contact material |
-
1988
- 1988-06-22 JP JP63153753A patent/JPH01320712A/en active Pending
-
1989
- 1989-05-29 KR KR1019890007257A patent/KR900019088A/en not_active Application Discontinuation
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0440340A2 (en) * | 1990-01-29 | 1991-08-07 | Chugai Denki Kogyo Kabushiki Kaisha | Electrical contact materials and method of manufacturing the same |
| EP0440340A3 (en) * | 1990-01-29 | 1992-05-27 | Chugai Denki Kogyo Kabushiki Kaisha | Electrical contact materials and method of manufacturing the same |
Also Published As
| Publication number | Publication date |
|---|---|
| KR900019088A (en) | 1990-12-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5160366A (en) | Silver-metal oxide composite material and process for producing the same | |
| JPS58108622A (en) | Electrode material for vacuum switch | |
| US5286441A (en) | Silver-metal oxide composite material and process for producing the same | |
| JPH01320712A (en) | Silver-oxide electric contact material | |
| US3976477A (en) | High conductivity high temperature copper alloy | |
| JPH0480100B2 (en) | ||
| JPH01312046A (en) | Silver-oxide electrical contact material | |
| US2161576A (en) | Silver base alloy | |
| JPS62158838A (en) | Silver-oxide type contact point material | |
| KR0171607B1 (en) | Vacuum circuit breaker and contact | |
| JPH08134564A (en) | Silver-oxide type electrical contact element | |
| JPH03183735A (en) | Silver-oxide contact material | |
| JPH03223433A (en) | Ag-sno-cdo electrical contact material and its manufacture | |
| JPS58141351A (en) | Electrical contact material for fuseless breaker | |
| JPH0153337B2 (en) | ||
| JPS59123108A (en) | Contact for current breaker | |
| JPH0623418B2 (en) | Silver-oxide contact material | |
| JPS58117843A (en) | Contact material | |
| JPH03215638A (en) | Silver-oxides series contact material | |
| JPH03219031A (en) | Contact material of silver-oxides series | |
| JPS6151016B2 (en) | ||
| JPH03215637A (en) | Contact material of oxide series | |
| JPH0463136B2 (en) | ||
| JPS62241209A (en) | Contact material | |
| JPH07114848A (en) | Contact for circuit breaker |