JPH0123535B2 - - Google Patents
Info
- Publication number
- JPH0123535B2 JPH0123535B2 JP57075652A JP7565282A JPH0123535B2 JP H0123535 B2 JPH0123535 B2 JP H0123535B2 JP 57075652 A JP57075652 A JP 57075652A JP 7565282 A JP7565282 A JP 7565282A JP H0123535 B2 JPH0123535 B2 JP H0123535B2
- Authority
- JP
- Japan
- Prior art keywords
- weight
- electrical contact
- bismuth
- resistance
- cadmium
- 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 27
- 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 8
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 claims description 8
- 229910052709 silver Inorganic materials 0.000 claims description 6
- 239000004332 silver Substances 0.000 claims description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 3
- 238000003466 welding Methods 0.000 description 6
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 4
- CJQSUEBYPDGXEY-UHFFFAOYSA-N bismuth;oxosilver Chemical compound [Bi].[Ag]=O CJQSUEBYPDGXEY-UHFFFAOYSA-N 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 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
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000005299 abrasion Methods 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
- 238000009413 insulation Methods 0.000 description 1
- 238000000034 method Methods 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
性の優れた接点性能を有するが、アークによる消
耗が大きく耐電圧、耐絶縁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ア
ークに対する耐消耗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0.1
〜10重量％と、カドミウム0.5〜５重量％未満と、
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
0.1〜10重量％と、カドミウム0.5〜５重量％未満
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ものであ
る。
本発明の電気接点材料に於いて、ビスマス0.1
〜10重量％、カドミウム0.5〜５重量％未満とし
た理由は、ビスマス0.1重量％未満、カドミウム
0.5重量％未満では銀量が多くなり、低接触抵抗
特性は得られるものの耐溶着特性、耐消耗特性に
関しては良好な結果が得られず、またビスマス10
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５重量％
以上になると銀―酸化ビスマスの耐溶着性を劣化
させるので、ビスマス0.1〜10重量％、カドミウ
ム0.5〜５重量％未満の範囲内では、耐溶着特性、
耐消耗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0.1〜10重量％、カドミウム0.5〜５
重量％未満以外に鉄族元素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
消耗が一層減少するからであつて、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１，２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1.0mm、脚部径2.8mm、脚長1.6mm、頭
部球状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、アトマイズ粉となした後、
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1.0
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１の成分組成の材料を実施例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
The present invention relates to electrical contact materials. Silver-bismuth oxide has conventionally been used as one of the electrical contact materials manufactured by internal oxidation. Silver-bismuth oxide has excellent contact performance such as arc resistance and welding resistance, but it suffers from large wear due to arcing and is inferior in voltage resistance and insulation resistance. Therefore, the inventor of the present invention has conducted extensive research to develop an electrical contact material that has contact properties that are more resistant to arc wear 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 0.1
~10% by weight, and less than 0.5 to 5% by weight of cadmium.
It is a material consisting of balance silver and is internally oxidized. Another electrical contact material of the present invention is bismuth
It is a material consisting of 0.1 to 10% by weight, 0.5 to less than 5% by weight of cadmium, 0.01 to 1% by weight of iron group elements, and the balance silver, and is internally oxidized. In the electrical contact material of the present invention, bismuth 0.1
~10% by weight, cadmium less than 0.5-5% by weight, because bismuth is less than 0.1% by weight, cadmium
If the amount of silver is less than 0.5% by weight, the amount of silver increases, and although low contact resistance properties can be obtained, good results cannot be obtained in terms of welding resistance and abrasion resistance, and bismuth 10
If it exceeds 5% by weight, the melting point of the alloy will drop too much and internal oxidation at high temperatures will become difficult.
If it exceeds this, the welding resistance of silver-bismuth oxide will deteriorate, so if the content is less than 0.1 to 10% by weight of bismuth and 0.5 to 5% by weight of cadmium, the welding resistance will deteriorate.
An electrical contact material having sufficiently satisfactory wear resistance properties can be obtained. Furthermore, in another electrical contact material of the present invention, bismuth is 0.1 to 10% by weight, cadmium is 0.5 to 5% by weight.
The reason why 0.01 to 1% by weight of iron group elements is added in addition to less than 0.01% by weight is that when this is dispersed in electrical contact materials, the resulting uniform and fine dispersion of bismuth oxide and cadmium oxide reduces consumption due to discharge. This is because if the amount is less than 0.01% by weight, bismuth oxide and cadmium oxide will not be uniformly and finely dispersed, and if it exceeds 1% 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 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 1.0 mm, a leg diameter of 2.8 mm, a leg length of 1.6 mm, and a spherical head shape of 5R. In addition, after melting the materials having the compositions of Examples 3 and 4 shown in the left column of the table below and making them into atomized powder,
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 1.0
A movable contact with a 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 using the electrical contact materials of Examples 1 to 4 and the same rivet-type electrical contacts made using the same method as Examples 1 and 2 using the material having the component composition of Conventional Example 1 shown in the left column of the table below. When a rivet-type electrical contact with the same dimensions 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 input, 10A steady load: Resistance Switching frequency: 20 times/min Number of switches: Until welding occurs
【表】
なお、耐電圧については接点間AC1200V、10
秒印加し、リーク電流が10ｍＡ未満の場合合格、
10ｍＡ以上の場合不合格とした。
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
１の電気接点材料で作つたリベツト型電気接点に
比し、耐電圧特性、耐消耗特性が遥かに優れ、耐
溶着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圧特性、耐消耗特性に
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] Regarding the withstand voltage, AC1200V between contacts, 10
Apply for seconds and pass if the leakage current is less than 10mA.
If it was 10mA or more, it was judged as a failure. As is clear from the above table, the rivet-type electrical contacts made with the electrical contact materials of Examples 1 to 4 have better voltage resistance and wear resistance than the rivet-type electrical contacts made with the electrical contact material of Conventional Example 1. It can be seen that the properties are far superior, and the welding resistance is almost equally excellent. As detailed above, the electrical contact material of the present invention has contact properties that are superior to conventional electrical contact materials in terms of pressure resistance and wear resistance, and is therefore an innovative material that can replace conventional electrical contact materials. It can be said that it is something.
Claims (1)
５重量％未満と、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0.1〜10重量％と、カドミウム0.5〜
５重量％未満と、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. 0.1 to 10% by weight of bismuth and 0.5 to 10% of cadmium.
A material consisting of less than 5% by weight and the balance silver,
and electrical contact materials that are internally oxidized. 2 Bismuth 0.1~10% by weight and cadmium 0.5~
An electrical contact material consisting of less than 5% by weight, 0.01 to 1% by weight of an iron group element, and the balance silver, and which is internally oxidized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57075652A JPS58193333A (en) | 1982-05-06 | 1982-05-06 | electrical contact materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57075652A JPS58193333A (en) | 1982-05-06 | 1982-05-06 | electrical contact materials |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58193333A JPS58193333A (en) | 1983-11-11 |
| JPH0123535B2 true JPH0123535B2 (en) | 1989-05-02 |
Family
ID=13582387
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57075652A Granted JPS58193333A (en) | 1982-05-06 | 1982-05-06 | electrical contact materials |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58193333A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60245740A (en) * | 1984-05-18 | 1985-12-05 | Tanaka Kikinzoku Kogyo Kk | Electrical contact material |
-
1982
- 1982-05-06 JP JP57075652A patent/JPS58193333A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58193333A (en) | 1983-11-11 |