JPH0147539B2 - - Google Patents
Info
- Publication number
- JPH0147539B2 JPH0147539B2 JP57092401A JP9240182A JPH0147539B2 JP H0147539 B2 JPH0147539 B2 JP H0147539B2 JP 57092401 A JP57092401 A JP 57092401A JP 9240182 A JP9240182 A JP 9240182A JP H0147539 B2 JPH0147539 B2 JP H0147539B2
- Authority
- JP
- Japan
- Prior art keywords
- weight
- electrical contact
- zinc
- cadmium
- bismuth
- 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
- 239000000463 material Substances 0.000 claims description 22
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 12
- 229910052725 zinc Inorganic materials 0.000 claims description 12
- 239000011701 zinc Substances 0.000 claims description 12
- 229910052797 bismuth Inorganic materials 0.000 claims description 9
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 claims description 9
- 229910052793 cadmium Inorganic materials 0.000 claims description 9
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 claims description 9
- 229910052709 silver Inorganic materials 0.000 claims description 4
- 239000004332 silver Substances 0.000 claims description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 3
- 238000003466 welding Methods 0.000 description 7
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 6
- 230000003647 oxidation Effects 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000011787 zinc oxide Substances 0.000 description 3
- DUCFBDUJLLKKPR-UHFFFAOYSA-N [O--].[Zn++].[Ag+] Chemical compound [O--].[Zn++].[Ag+] DUCFBDUJLLKKPR-UHFFFAOYSA-N 0.000 description 2
- 229910000416 bismuth oxide Inorganic materials 0.000 description 2
- CXKCTMHTOKXKQT-UHFFFAOYSA-N cadmium oxide Inorganic materials [Cd]=O CXKCTMHTOKXKQT-UHFFFAOYSA-N 0.000 description 2
- CFEAAQFZALKQPA-UHFFFAOYSA-N cadmium(2+);oxygen(2-) Chemical compound [O-2].[Cd+2] CFEAAQFZALKQPA-UHFFFAOYSA-N 0.000 description 2
- TYIXMATWDRGMPF-UHFFFAOYSA-N dibismuth;oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Bi+3].[Bi+3] TYIXMATWDRGMPF-UHFFFAOYSA-N 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
Landscapes
- Manufacture Of Switches (AREA)
- Contacts (AREA)
Description
本発明は、電気接点材料に関するものである。
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−酸化亜鉛が用いられてきた。
銀−酸化亜鉛は、耐アーク性、耐消耗性の優れた
接点性能を有するが、耐溶着性に劣るものであ
る。
そこで本発明者は、この電気接点材料よりも耐
溶着性に優れた接点特性を有する電気接点材料を
開発すべく鋭意考究の結果、満足できる電気接点
材料を見い出したものである。
本発明の電気接点材料の一つは、ビスマス2.5
〜５重量％と、カドミウム１〜10重量％と、亜鉛
２〜10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
2.5〜５重量％と、カドミウム１〜10重量％と、
亜鉛２〜10重量％と、鉄族元素0.01〜0.5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2.5
〜５重量％、カドミウム１〜10重量％、亜鉛２〜
10重量％とした理由は、ビスマス2.5重量％未満
では内部酸化促進効果がなく、また亜鉛の層状析
出をおさえることが出来なく、カドミウム１重量
％未満では接触面の酸化物の凝集防止効果がなく
低接触抵抗特性は得られず、亜鉛２重量％未満で
は耐溶着性が十分得られず、またビスマス５重量
％を越えると合金の融点が下がりすぎ高温での内
部酸化が困難となり、カドミウム10重量％を越え
ると消耗が大きくなり耐電圧が劣化し、亜鉛10重
量％を越えると酸化亜鉛の層状析出がひどく内部
酸化が困難となるからである。そして、ビスマス
2.5〜５重量％、カドミウム１〜10重量％、亜鉛
２〜10重量％の範囲内では、耐溶着性、耐消耗
性、接触抵抗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2.5〜５重量％、カドミウム１〜10
重量％、亜鉛１〜10重量％以外に鉄族元素0.01〜
0.5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亜
鉛、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、放電による消耗が一層減少する
からであつて、0.01重量％未満では酸化亜鉛、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、0.5重量％を越えるとそれ自体の偏析が増
加するからである。
次に本発明による電気接点材料の効果を明瞭な
らしめる為に、具体的な実施例と従来例について
説明する。
下記の表の左欄に示す実施例１〜13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
部球状5Rの可動接点を得た。
然してこれら実施例１〜13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を実施例と同じ方法
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
接触力：40g
The present invention relates to electrical contact materials. Silver-zinc oxide has conventionally been used as one of the electrical contact materials manufactured by internal oxidation.
Silver-zinc oxide has excellent contact performance such as arc resistance and wear resistance, but is inferior in welding resistance. Therefore, the inventor of the present invention has conducted intensive studies to develop an electrical contact material having contact characteristics superior in welding resistance than this electrical contact material, and as a result, has found a satisfactory electrical contact material. One of the electrical contact materials of the present invention is bismuth 2.5
~5% by weight, 1 to 10% by weight of cadmium, 2 to 10% by weight of zinc, and the balance silver,
Moreover, it is internally oxidized. Another electrical contact material of the present invention is bismuth
2.5 to 5% by weight, and 1 to 10% by weight of cadmium.
2-10% by weight of zinc and 0.01-0.5% by weight of iron group elements
and the remainder is silver, and is internally oxidized. In the electrical contact material of the present invention, bismuth 2.5
~5% by weight, cadmium 1~10% by weight, zinc 2~
The reason why it is set at 10% by weight is that if bismuth is less than 2.5% by weight, there is no effect of promoting internal oxidation and layered precipitation of zinc cannot be suppressed, and if less than 1% by weight of cadmium, there is no effect of preventing agglomeration of oxides on the contact surface. Low contact resistance characteristics cannot be obtained, and if zinc is less than 2% by weight, sufficient adhesion resistance cannot be obtained, and if bismuth exceeds 5% by weight, the melting point of the alloy will be too low and internal oxidation at high temperatures will become difficult, and if cadmium is less than 10% by weight, This is because if the amount exceeds 10% by weight of zinc, the consumption increases and the withstand voltage deteriorates, and if the amount exceeds 10% by weight of zinc, layered precipitation of zinc oxide becomes severe and internal oxidation becomes difficult. And bismuth
Within the ranges of 2.5 to 5% by weight, 1 to 10% by weight of cadmium, and 2 to 10% by weight of zinc, an electrical contact material with sufficiently satisfactory welding resistance, wear resistance, and contact resistance properties can be obtained. Furthermore, in another electrical contact material of the present invention, bismuth is 2.5 to 5% by weight, cadmium is 1 to 10% by weight.
Weight%, iron group elements 0.01 to 10% by weight in addition to zinc 1 to 10% by weight
The reason for adding 0.5% by weight is that when dispersed in electrical contact materials, the resulting uniform and fine dispersion of zinc oxide, bismuth oxide, and cadmium oxide further reduces consumption due to discharge. If it is less than 0.01% by weight, zinc oxide, bismuth oxide and cadmium oxide will not be uniformly and finely dispersed, and if it exceeds 0.5% by weight, their segregation will increase. Next, in order to clarify the effects of the electrical contact material according to the present invention, specific examples and conventional examples will be described. After melting the materials having the compositions of Examples 1 to 13 shown in the left column of the table below and making them into atomized powder,
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 head shape of 5R. However, the rivet-type electrical contacts made using the electrical contact materials of Examples 1 to 13 and the rivet-type electrical contacts of the same size made using the materials having the compositions of the conventional examples shown in the left column of the table below in the same manner as in the examples. When electrical contacts were assembled into a hinge-type relay and a switching test was performed 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 input, 10A steady load: Resistance Opening/closing frequency: 20 times/min Number of opening/closing: Until welding occurs Contact force: 40g
【表】
上記の表で明らかなように実施例１〜13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、耐溶着性、接触抵抗特性に優れ、耐消耗性に
ついては略同等に優れていることが判る。
以上詳記した通り本発明の電気接点材料は、従
来の電気接点材料よりも耐溶着性、接触抵抗特性
に優れた接点特性を有するので、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 above table, the rivet-type electrical contacts made with the electrical contact materials of Examples 1 to 13 have better welding resistance and better resistance to welding than the rivet-type electrical contacts made with the conventional electrical contact materials. It can be seen that the contact resistance characteristics are excellent, and the wear resistance is almost equally excellent. As detailed above, the electrical contact material of the present invention has contact properties that are superior to those of conventional electrical contact materials in terms of welding resistance and contact resistance, so it is an innovative product that can replace conventional electrical contact materials. It can be said that it is something like that.
Claims (1)
10重量％と、亜鉛２〜10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2.5〜５重量％と、カドミウム１〜
10重量％と、亜鉛２〜10重量％と、鉄族元素0.01
〜0.5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。[Claims] 1. 2.5 to 5% by weight of bismuth and 1 to 5% by weight of cadmium.
10% by weight of zinc, 2 to 10% by weight of zinc, and the balance silver, and is internally oxidized. 2 2.5-5% by weight of bismuth and 1-1% of cadmium
10% by weight, 2-10% by weight of zinc, and 0.01% of iron group elements.
A material consisting of ~0.5% by weight and the balance silver,
and electrical contact materials that are internally oxidized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57092401A JPS58210138A (en) | 1982-05-31 | 1982-05-31 | Electrical contact material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57092401A JPS58210138A (en) | 1982-05-31 | 1982-05-31 | Electrical contact material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58210138A JPS58210138A (en) | 1983-12-07 |
| JPH0147539B2 true JPH0147539B2 (en) | 1989-10-16 |
Family
ID=14053388
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57092401A Granted JPS58210138A (en) | 1982-05-31 | 1982-05-31 | Electrical contact material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58210138A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5494430A (en) * | 1978-01-09 | 1979-07-26 | Sumitomo Electric Ind Ltd | Electric contact material |
-
1982
- 1982-05-31 JP JP57092401A patent/JPS58210138A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5494430A (en) * | 1978-01-09 | 1979-07-26 | Sumitomo Electric Ind Ltd | Electric contact material |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58210138A (en) | 1983-12-07 |
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