JPH0350811B2 - - Google Patents
Info
- Publication number
- JPH0350811B2 JPH0350811B2 JP59104955A JP10495584A JPH0350811B2 JP H0350811 B2 JPH0350811 B2 JP H0350811B2 JP 59104955 A JP59104955 A JP 59104955A JP 10495584 A JP10495584 A JP 10495584A JP H0350811 B2 JPH0350811 B2 JP H0350811B2
- Authority
- JP
- Japan
- Prior art keywords
- weight
- electrical contact
- bismuth
- cadmium
- resistance
- 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 - Lifetime
Links
- 239000000463 material Substances 0.000 claims description 21
- 229910052793 cadmium Inorganic materials 0.000 claims description 12
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 claims description 12
- 229910052797 bismuth Inorganic materials 0.000 claims description 11
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 claims description 11
- 229910052738 indium Inorganic materials 0.000 claims description 8
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 claims description 8
- 229910052714 tellurium Inorganic materials 0.000 claims description 8
- PORWMNRCUJJQNO-UHFFFAOYSA-N tellurium atom Chemical compound [Te] PORWMNRCUJJQNO-UHFFFAOYSA-N 0.000 claims description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 3
- 229910052709 silver Inorganic materials 0.000 claims description 3
- 239000004332 silver Substances 0.000 claims description 3
- 238000003466 welding Methods 0.000 description 13
- CJQSUEBYPDGXEY-UHFFFAOYSA-N bismuth;oxosilver Chemical compound [Bi].[Ag]=O CJQSUEBYPDGXEY-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000000859 sublimation Methods 0.000 description 2
- 230000008022 sublimation Effects 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 229910000416 bismuth oxide Inorganic materials 0.000 description 1
- CCXYPVYRAOXCHB-UHFFFAOYSA-N bismuth silver Chemical compound [Ag].[Bi] CCXYPVYRAOXCHB-UHFFFAOYSA-N 0.000 description 1
- CXKCTMHTOKXKQT-UHFFFAOYSA-N cadmium oxide Inorganic materials [Cd]=O CXKCTMHTOKXKQT-UHFFFAOYSA-N 0.000 description 1
- CFEAAQFZALKQPA-UHFFFAOYSA-N cadmium(2+);oxygen(2-) Chemical compound [O-2].[Cd+2] CFEAAQFZALKQPA-UHFFFAOYSA-N 0.000 description 1
- TYIXMATWDRGMPF-UHFFFAOYSA-N dibismuth;oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Bi+3].[Bi+3] TYIXMATWDRGMPF-UHFFFAOYSA-N 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Composite Materials (AREA)
- Materials Engineering (AREA)
- Manufacture Of Switches (AREA)
- Contacts (AREA)
- Conductive Materials (AREA)
Description
（産業上の利用分野）
本発明は、電気接点材料に関するものである。
（従来技術及びその問題点）
従来より内部酸化法により製作した電気接点材
料の一つとして銀−酸化ビスマスが用いられてき
た。銀−酸化ビスマスは、耐アーク性、耐溶着特
性に優れ安定した接触抵抗等の接点性能を有する
が、昨今、継電器の小型化に伴い接触力、開離力
の低下、接点の小型化、接点ギヤツプの狭小化に
伴い耐溶着性に問題が生じてきた。この為、さら
に耐溶着性に優れた電気接点材が要望されてい
る。
（発明の目的）
本発明は斯かる要望を満たすべくなされたもの
で、銀−酸化ビスマスより成る電気接点材料の安
定した接触抵抗をそのまま具有し、耐溶着性が大
幅に向上した電気接点材料を提供せんとするもの
である。
（問題点を解決するための手段）
本発明の電気接点材料の一つは、ビスマス１〜
20重量％と、カドミウム0.1〜５重量％、インジ
ウム0.5〜５重量％、テルル0.5〜５重量％と、残
部銀から成る材料であつて、且つ内部酸化されて
いるものである。
本発明の電気接点材料の他の一つは、ビスマス
１〜20重量％と、カドミウム0.1〜５重量％、イ
ンジウム0.5〜５重量％、テルル0.5〜５重量％
と、残部銀から成る材料であつて、且つ内部酸化
されているものである。
本発明の電気接点材料に於いて、ビスマス１〜
20重量％と、カドミウム0.1〜５重量％、インジ
ウム0.5〜５重量％、テルル0.5〜５重量％とした
理由は、ビスマス、カドミウムは低温昇華性によ
つて耐溶着性を向上させるためで、ビスマス１重
量％未満、カドミウム0.1重量％未満ではその効
果がなく、ビスマス20重量％を超えると合金の融
点が下がりすぎて高温での内部酸化が困難とな
り、カドミウム５重量％を超えると銀−酸化ビス
マスの耐溶着性を劣化させる。インジウムは酸化
物が熱的安定なことにより耐溶着性を向上させる
ためで、0.5重量％未満ではその効果がなく、５
重量％を超えると接点開閉時酸化物が接点表面に
堆積し接触抵抗、温度上昇を大にする。テルルは
ビスマス、カドミウムと同様、低温昇華性によつ
て耐溶着性を向上させためで、0.5重量％未満で
はその効果がなく、５重量％を超えると加工性が
非常に悪くなる。以上のことにより、ビスマス１
〜20重量％、カドミウム0.1〜５重量％、インジ
ウム0.5〜５重量％、テルル0.5〜５重量％の範囲
内では、耐溶着特性の充分満足できる電気接点材
料が得られるものである。
さらに本発明の電気接点材料の他の一つに於い
て、ビスマス１〜20重量％、カドミウム0.1〜５
重量％、インジウム0.5〜５重量％、テルル0.5〜
５重量％以外に鉄族元素0.01〜１重量％添加する
理由は、これを電気接点材料に分散させた場合、
これにより得られる酸化ビスマス及び酸化カドミ
ウムの均一微細な分散によつて、放電による消耗
が均一化するため接触抵抗がより安定するからで
あつて、0.01重量％未満では酸化ビスマス及び酸
化カドミウムが均一微細に分散せず、１重量％を
超えるとそれ自体の偏析が増加し、接触抵抗が不
安定となる。
（実施例及び従来例）
下記の表に左欄に示す実施例１、２の成分組成
の材料を溶解し、アトマイズ粉となした後、600
℃、９気圧、２日間内部酸化し、この酸化アトマ
イズ粉を圧縮焼結し、これを押出、引抜加工した
後切断してヘツダー加工し、頭部径５mm、頭高
1.0mm、脚部径2.5mm、脚長2.5mmの固定接点と頭部
径４mm、頭高1.1mm、脚部径2.8mm、脚長1.6mm、頭
高球状5Rの可動接点を得た。
また下記の表の左欄に示す実施例３、４の成分
組成の材料を溶解し、チツプ形状となした後、
600℃、９気圧、２日間内部酸化した後圧縮焼結
し、これを押出、引抜加工した後切断してヘツダ
ー加工し、頭部径５mm、頭高1.0mm、脚部径2.5
mm、脚長2.5mmの固定接点と頭部径４mm、頭高1.1
mm、脚部径2.8mm、脚長1.6mm、頭部球状5Rの可動
接点を得た。
然してこれら実施例１〜４の電気接点材料にて
作つたリベツト型電気接点と、下記の表の左欄に
示す従来例の成分組成の材料と実施例１、２と同
じ方法で作つた同一寸法のリベツト型電気接点を
ヒンジ型リレーに組み込み下記の試験条件にて開
閉試験を行つた処、下記の表の右欄に示すような
結果を得た。
試験条件
電圧：AC100V 50Hz
電流：投入40A、定常10A
負荷：抵抗
開閉頻度20回／分
開閉回数：溶着発生迄
(Industrial Application Field) The present invention relates to electrical contact materials. (Prior Art and its Problems) Silver-bismuth oxide has conventionally been used as one of the electrical contact materials manufactured by internal oxidation method. Silver-bismuth oxide has contact performance such as excellent arc resistance and welding resistance, and stable contact resistance. With the narrowing of the gap, problems have arisen in welding resistance. For this reason, there is a demand for electrical contact materials with even better welding resistance. (Purpose of the Invention) The present invention has been made to meet such needs, and provides an electrical contact material that retains the stable contact resistance of the electrical contact material made of silver-bismuth oxide and has significantly improved welding resistance. This is what we intend to provide. (Means for Solving the Problems) One of the electrical contact materials of the present invention includes bismuth 1 to
20% by weight, 0.1-5% by weight of cadmium, 0.5-5% by weight of indium, 0.5-5% by weight of tellurium, and the balance is internally oxidized. Another electrical contact material of the present invention includes 1 to 20% by weight of bismuth, 0.1 to 5% by weight of cadmium, 0.5 to 5% by weight of indium, and 0.5 to 5% by weight of tellurium.
and the remainder is silver, and is internally oxidized. In the electrical contact material of the present invention, bismuth 1 to
The reason for using 20% by weight, 0.1 to 5% by weight of cadmium, 0.5 to 5% by weight of indium, and 0.5 to 5% by weight of tellurium is that bismuth and cadmium improve welding resistance through low-temperature sublimation, and bismuth Less than 1% by weight of cadmium and less than 0.1% by weight of cadmium have no effect; more than 20% by weight of bismuth lowers the melting point of the alloy so much that internal oxidation at high temperatures becomes difficult, and more than 5% by weight of cadmium causes silver-bismuth oxide. Deteriorates the welding resistance of Indium improves welding resistance due to the thermal stability of its oxide, and if it is less than 0.5% by weight, it has no effect, and 5
If the weight percentage is exceeded, oxides will accumulate on the contact surface when the contact is opened and closed, increasing contact resistance and temperature rise. Like bismuth and cadmium, tellurium improves welding resistance through its low-temperature sublimation properties; if it is less than 0.5% by weight, it has no effect, and if it exceeds 5% by weight, workability becomes extremely poor. By the above, bismuth 1
-20% by weight, cadmium 0.1-5% by weight, indium 0.5-5% by weight, and tellurium 0.5-5% by weight, an electrical contact material with sufficiently satisfactory welding resistance can be obtained. Furthermore, in another electrical contact material of the present invention, bismuth is 1 to 20% by weight, cadmium is 0.1 to 5% by weight.
Weight%, Indium 0.5~5% by weight, Tellurium 0.5~
The reason for adding 0.01 to 1% by weight of iron group elements in addition to 5% by weight is that when dispersed in electrical contact materials,
This is because the resulting uniform fine dispersion of bismuth oxide and cadmium oxide equalizes consumption due to discharge, making the contact resistance more stable. If the amount exceeds 1% by weight without being dispersed in the water, segregation of itself increases and contact resistance becomes unstable. (Example and conventional example) After melting the materials having the compositions of Examples 1 and 2 shown in the left column of the table below and making them into atomized powder, 600
The oxidized atomized powder was internally oxidized at ℃, 9 atm for 2 days, compressed and sintered, extruded and drawn, then cut and processed into headers, with a head diameter of 5 mm and a head height.
We obtained a fixed contact with a diameter of 1.0 mm, a leg diameter of 2.5 mm, and a leg length of 2.5 mm, and a movable contact with a head diameter of 4 mm, a head height of 1.1 mm, a leg diameter of 2.8 mm, a leg length of 1.6 mm, and a spherical 5R head height. In addition, after melting the materials having the compositions of Examples 3 and 4 shown in the left column of the table below and forming them into a chip shape,
After being internally oxidized at 600℃ and 9 atm for 2 days, it was compressed and sintered, then extruded and drawn, then cut and processed into headers.The head diameter was 5 mm, the head height was 1.0 mm, and the leg diameter was 2.5 mm.
mm, fixed contact with leg length 2.5mm and head diameter 4mm, head height 1.1
A movable contact with a leg diameter of 2.8 mm, a leg length of 1.6 mm, and a spherical head shape of 5R was obtained. However, the rivet-type electrical contacts made with the electrical contact materials of Examples 1 to 4, and the materials with the compositions of the conventional examples shown in the left column of the table below, and the same dimensions made by the same method as Examples 1 and 2. When the rivet-type electrical contact was assembled into a hinge-type relay and an opening/closing test was conducted under the test conditions below, the results shown in the right column of the table below were obtained. Test conditions Voltage: AC100V 50Hz Current: 40A, steady 10A Load: Resistance switching frequency 20 times/min Number of switching: Until welding occurs
【表】
上記の表で明らかなように実施例１〜４の電気
接点材料で作つたリベツト型電気接点は、従来例
の電気接点材料で作つたリベツト型電気接点に比
し、溶着発生までの開閉回数が多く耐溶着性にす
ぐれ接触抵抗も同等に低く且つばらつきが少く安
定していることがわかる。
（発明の効果）
以上詳記した通り本発明の電気接点材料は従来
の銀−ビスマスより成る電気接点材料と同等の安
定した接触抵抗を有し、その上耐溶着性について
は格段に向上しており、従来の電気接点材料にと
つて代わることのできる画期的なものと云える。[Table] As is clear from the table above, the rivet-type electrical contacts made with the electrical contact materials of Examples 1 to 4 had a faster welding time than the rivet-type electrical contacts made with the conventional electrical contact materials. It can be seen that the number of openings and closings is large, the welding resistance is excellent, and the contact resistance is equally low and stable with little variation. (Effects of the Invention) As detailed above, the electrical contact material of the present invention has a stable contact resistance equivalent to that of the conventional electrical contact material made of silver-bismuth, and has significantly improved welding resistance. Therefore, it can be said to be an epoch-making product that can replace conventional electrical contact materials.
Claims (1)
重量％、インジウム0.5〜５重量％、テルル0.5〜
５重量％と、残部銀から成る材料であつて、且つ
内部酸化されている電気接点材料。 ２ ビスマス１〜20重量％、カドミウム0.1〜５
重量％、インジウム0.5〜５重量％、テルル0.5〜
５重量％と、鉄族元素0.01〜１重量％と、残部銀
から成る材料であつて、且つ内部酸化されている
電気接点材料。[Claims] 1 Bismuth 1-20% by weight, cadmium 0.1-5
Weight%, Indium 0.5~5% by weight, Tellurium 0.5~
An electrical contact material consisting of 5% by weight and the balance silver and which is internally oxidized. 2 Bismuth 1-20% by weight, cadmium 0.1-5
Weight%, Indium 0.5~5% by weight, Tellurium 0.5~
5% by weight of an iron group element, 0.01 to 1% by weight of an iron group element, and the balance is silver, and is internally oxidized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59104955A JPS60248838A (en) | 1984-05-24 | 1984-05-24 | Electrical contact material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59104955A JPS60248838A (en) | 1984-05-24 | 1984-05-24 | Electrical contact material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60248838A JPS60248838A (en) | 1985-12-09 |
| JPH0350811B2 true JPH0350811B2 (en) | 1991-08-02 |
Family
ID=14394513
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59104955A Granted JPS60248838A (en) | 1984-05-24 | 1984-05-24 | Electrical contact material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60248838A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0762189B2 (en) * | 1991-09-27 | 1995-07-05 | 三菱マテリアル株式会社 | Silver-oxide type electrical contact material |
-
1984
- 1984-05-24 JP JP59104955A patent/JPS60248838A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60248838A (en) | 1985-12-09 |
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