JPS5884938A - Electrical contact material - Google Patents

Electrical contact material

Info

Publication number
JPS5884938A
JPS5884938A JP56181922A JP18192281A JPS5884938A JP S5884938 A JPS5884938 A JP S5884938A JP 56181922 A JP56181922 A JP 56181922A JP 18192281 A JP18192281 A JP 18192281A JP S5884938 A JPS5884938 A JP S5884938A
Authority
JP
Japan
Prior art keywords
group metal
carbide
contact
iron group
electrical contact
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
Application number
JP56181922A
Other languages
Japanese (ja)
Inventor
Akira Fukui
彰 福井
Mitsuo Osada
光生 長田
Yoshinari Amano
良成 天野
Atsushi Kuroishi
黒石 農士
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sumitomo Electric Industries Ltd
Original Assignee
Sumitomo Electric Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sumitomo Electric Industries Ltd filed Critical Sumitomo Electric Industries Ltd
Priority to JP56181922A priority Critical patent/JPS5884938A/en
Publication of JPS5884938A publication Critical patent/JPS5884938A/en
Pending legal-status Critical Current

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  • Manufacture Of Switches (AREA)
  • Contacts (AREA)

Abstract

PURPOSE:To enhance the welding resistance and hardly dissipative property of the resulting titled material, to control the temp. rise, and to reduce the contact resistance and cost by dispersing the carbide and boride of a IVa, Va or VIa group metal in an iron group metal and silver. CONSTITUTION:This electrical contact material has a composition consisting of, by weight, 5-70% carbide of a IVa, Va or VIa group metal, 0.1-30% boride of a IVa, Va or VIa group metal, 2-60% iron group metal, and the balance silver. Said carbide and boride are solubilized in the iron group metal when the starting materials are sintered, and they are dispersed in the iron group metal and silver.

Description

【発明の詳細な説明】 気接点材料に関するものである。[Detailed description of the invention] It relates to gas contact materials.

また特にAg − Ni−炭化物系合金接点材料の特性
向上を目的としたものである。従来SAg − WO系
合金はそのすぐれた耐アーク性、耐溶着性のため気中し
ゃ断器、開閉器等の機器の接点として広く使用されてい
る。しかるに最近、電磁開閉器1接触器は小型、高性能
化のすう勢にあり、これに伴って接点材料への負荷が厳
しくなり、接点性能の向上が強く要請されている。又、
機器の小型化により接点寸法の小型化、接触圧力の低下
の傾向にあり、これによって電流開閉時に生ずる消耗、
飛散が増大し接点の溶着や定格電流開閉時に温度上昇が
起り易いといった問題が生じている。このような特性改
善の要望に答えるものの一つとしてAg − No合金
にニッケルを添加した接点が開発されている。この接点
は開閉時発生したアーク熱での消耗が少ない効果がある
。しかしながらWaの酸化による温度上昇が高い欠点が
あった。
In particular, the present invention is aimed at improving the characteristics of Ag-Ni-carbide alloy contact materials. Conventional SAg-WO alloys have been widely used as contacts in devices such as air circuit breakers and switches due to their excellent arc resistance and welding resistance. However, in recent years, electromagnetic switch single contactors have been trending toward smaller size and higher performance, and as a result, the load on contact materials has become severer, and there is a strong demand for improved contact performance. or,
Due to the miniaturization of devices, there is a trend toward smaller contact dimensions and lower contact pressure, which reduces the wear and tear that occurs when switching current.
Problems have arisen such as increased scattering, welding of contacts, and temperature rise when switching at the rated current. In order to meet the demand for improved characteristics, a contact made of Ag--No alloy with nickel added has been developed. This contact has the effect of reducing wear due to arc heat generated during opening and closing. However, there was a drawback that the temperature rise due to oxidation of Wa was high.

このため小型高性能の電磁開閉器や接触器+は使用範囲
が一定されている。
For this reason, the range of use of small, high-performance electromagnetic switches and contactors + is fixed.

本発明は以上の点に鑑みてなされたものであり耐溶着性
、耐消耗性を併せて具備し、且つ温度上昇が低い実用性
に優れた接点合金を提供するものである。更に本発明合
金は高価な銀量をかなり少なくしても接点として使用可
能な安価な接点合金を提供するものである。
The present invention has been made in view of the above points, and it is an object of the present invention to provide a contact alloy that has both welding resistance and abrasion resistance, has low temperature rise, and is excellent in practical use. Furthermore, the alloy of the present invention provides an inexpensive contact alloy that can be used as a contact even when the amount of expensive silver is considerably reduced.

本発明による合金は、鉄族金属と銀に■a1■a、■a
族金属の炭化物及び■a1■a1■a族金属の硼化物を
分散含有せしめ、炭化物、硼化物が銀及び鉄属金属中に
分散したことを特徴とする電気接点材料である。
The alloy according to the present invention combines iron group metals and silver with ■a1■a, ■a
This is an electrical contact material containing dispersed carbides of group metals and borides of group metals.

以下本発明による合金の特徴を説明する。The characteristics of the alloy according to the present invention will be explained below.

発明者等は銀に鉄族金属と各種炭化物を添加した合金の
検討を種々行なった結”果、該鉄族金属中に炭化物が分
散した合金が電流の開閉時に発生するアーク熱での消耗
、飛散が極端に少ない効果を示すことを再確認した。
The inventors conducted various studies on alloys made by adding iron group metals and various carbides to silver, and found that alloys in which carbides are dispersed in iron group metals are consumed by the arc heat generated when the current is switched on and off. It was reconfirmed that the effect was extremely low in scattering.

しかしながら1鉄族金属や炭化物は耐酸化性が履く、開
閉時に発生するアーク熱によって酸化し、接点amに酸
化物な形成し接触抵抗を増大させ機−の濃度上昇が高く
なる欠点があ゛る〇上記接点合金に硼化物を添加せしめ
ると、焼結時に\鉄族金属中に炭化物、硼化物が固溶し
−これら分散物により合金は高硬度になると共に、耐陵
化性が向上し、鉄−ニッケルー炭化物では期待できなか
った低接触抵抗性とすぐれた耐消耗性を示すことがわか
った。
However, although iron group metals and carbides have poor oxidation resistance, they are oxidized by the arc heat generated during opening and closing, forming oxides at the contact point am, increasing contact resistance and increasing the concentration of the metal. 〇When borides are added to the above contact alloy, carbides and borides are solidly dissolved in the iron group metal during sintering, and these dispersions make the alloy highly hard and improve its resistance to corrosion. It was found that the iron-nickel carbide exhibits low contact resistance and excellent abrasion resistance that could not be expected.

崗、鉄族金属と炭化物及び硼化物の固溶反応は一錠に高
温でしか起らないが、銀が存在すると焼餉時銀が液相と
なり、この液相を介して反応が促進されることが判明し
たり 鉄族金属は1・、Oo、Nilであり、2〜40重量S
″″Cあり、好ましくは20〜sO重量≦が適当である
・コ重量襲以下では鉄族金属が鎖中に分散し、炭化物、
硼化物の固溶が起きず耐消耗性が向上しない、tた40
重量襲以上では硼化物を添加しても接触抵抗が低下せず
温度上昇特性の崗上III果がない。
Solid solution reactions between iron group metals, carbides, and borides occur only at high temperatures, but when silver is present, the silver becomes a liquid phase during baking, and the reaction is accelerated through this liquid phase. It was found that the iron group metals are 1, Oo, Nil, and 2 to 40 weight S
``''C, preferably 20~sO weight ≦ is appropriate. Below the weight range, iron group metals are dispersed in the chain, forming carbides,
Solid solution of boride does not occur and wear resistance does not improve, t40
Above the weight resistance, even if boride is added, the contact resistance does not decrease and there is no effect on temperature rise characteristics.

硼化物としてはli、Mo、Ta5Nb、Ti、Or。Borides include li, Mo, Ta5Nb, Ti, and Or.

Zr5V等の■a SV& 、 VIIL族金属の硼化
物が効果があり、その量としては017〜30重量%が
好ましく、特に3〜7重量%の特性が良い。硼化物が0
.1重量%以下では鎖中の硼化物量が少なすぎて接触特
性の改善効果が不充分であり、30重量%以上では炭化
物とのバランスで耐消耗性が劣る。
A boride of a SV&, VIIL group metal such as Zr5V is effective, and the amount thereof is preferably 017 to 30% by weight, and particularly 3 to 7% by weight has good properties. Boride is 0
.. If it is less than 1% by weight, the amount of boride in the chain is too small and the effect of improving contact properties is insufficient, and if it is more than 30% by weight, wear resistance is poor due to the balance with carbide.

量としては、3〜70重量%が好ましく、特に20〜S
O重量%の特性が良い。3重量%以下では耐消耗性向上
効果が少なく、70重量%以上では、硼化物を添加して
も接触抵抗が低下しないためである。
The amount is preferably 3 to 70% by weight, particularly 20 to 70% by weight.
Good properties of O weight %. This is because if it is less than 3% by weight, the effect of improving wear resistance is small, and if it is more than 70% by weight, the contact resistance does not decrease even if boride is added.

尚、本発明の目的を害しない0.1重量%程度のjkl
、 Si、So、 To、 Bi、Zn、Od、In、
Sn。
Note that about 0.1% by weight of jkl does not impair the purpose of the present invention.
, Si, So, To, Bi, Zn, Od, In,
Sn.

Oa、111等の金属元素が入っても差しつかえない。There is no problem even if metal elements such as Oa and 111 are included.

次に実施例によって本発明による接点合金の特徴を具体
的に説明する。
Next, the characteristics of the contact alloy according to the present invention will be specifically explained using examples.

実施例1 第1表、第−表、第3表及び第9表に示した割合で各粉
末を配合し、混合後成型体を作り、該成型体を水素雰囲
気中で/10OCの温度で焼結した0この焼結体を再加
圧して気孔率が殆んど零の合金を作製した。合金中筒グ
表のものは比較材としての従来の合金である。
Example 1 Each powder was blended in the proportions shown in Table 1, Table 1, Table 3, and Table 9, and after mixing, a molded body was made, and the molded body was sintered at a temperature of /10OC in a hydrogen atmosphere. The sintered body was re-pressed to produce an alloy with almost zero porosity. The alloys in the table are conventional alloys for comparison.

第  /  表        単位二重量%爽麹例コ 、実施例!で作成した合金、A−k 、B/ Soコ及
び比曽#カlの命命から可動接点/I X /j Xコ
X jQRmmの寸法に、固定接点# X /!f X
−■の寸法に切削加工したのち台金に抵抗鐘付けで接合
せしめ、これ醗JoQム定格の電磁開閉−に組込み下記
に示す試験条件にて接点性能評価をした結果、第6表を
得た。
Chapter/Table Unit double amount % Soukoji example, Examples! From the alloy created by A-k, B/ Soko and Hiso #cal, the movable contact /I X /j f
- After cutting to the dimensions of ■, it was joined to the base metal with a resistor bell, and this was assembled into an electromagnetic switch of JoQm rating.The contact performance was evaluated under the test conditions shown below, and as a result, Table 6 was obtained. .

試拳条件:電圧コ□ov1電流lコ。θA1カ率。、λ
jj2Fil開閉。
Test conditions: Voltage □ov1 Current l. θA1 power rate. ,λ
jj2Fil open/close.

第  6  表 84表で示すように本発明合金は消耗量が少なく接触抵
抗が低く、高性能の接点特性を有していることがわかる
As shown in Table 6, Table 84, it can be seen that the alloy of the present invention has low wear and contact resistance, and has high performance contact characteristics.

本発明合金は上述の通り接点性能が優れているのみでな
く、鉄族金属、炭化物、硼化物を多量に含有しており高
価な銀量を大幅に節減できるので工業的価値の高いもの
である。
The alloy of the present invention not only has excellent contact performance as described above, but also contains large amounts of iron group metals, carbides, and borides, and the amount of expensive silver can be significantly reduced, so it is of high industrial value. .

Claims (1)

【特許請求の範囲】[Claims] (1)  元素周期律表のIVa 、 Va 、 VI
a族金属の炭化物がS〜り0重量%−■a−%Va1■
a族金属の硼化物007〜30重量%、鉄族金属2〜6
o重量%、残部銀からなり、炭化物、硼化物が鉄族金属
及び鎖中に分散したことを特徴とする電気接点材料。 (A 炭化物がタングステン、モリブデン、タンタル、
ニオブ、チタン、クロムのうち少なくとも1種の炭化物
であることを特徴とする特許請求の範囲(1)項記載の
電気接点材料。 (の 硼化物がタングステン、モリブデン、タンタル、
二゛オプ、チタン、クロム、ジルコニウム、バナジウム
のうち少なくとも7種の硼化物であることを特徴とする
特許請求の範囲(1)項記載の電気接点材料。 ()鉄族金属がニッケル、鉄、コバルトノウチ少なくと
も1種であることを特徴とする特許請求の範囲(/3項
記載の電気接点材料。
(1) IVa, Va, VI of the periodic table of elements
Carbide of group a metal is S ~ 0% by weight -■a-%Va1■
Borides of group a metals 007-30% by weight, iron group metals 2-6
An electrical contact material characterized in that the balance is silver, and carbides and borides are dispersed in iron group metals and chains. (A Carbide is tungsten, molybdenum, tantalum,
The electrical contact material according to claim (1), characterized in that it is a carbide of at least one of niobium, titanium, and chromium. (The borides are tungsten, molybdenum, tantalum,
The electrical contact material according to claim (1), characterized in that it is at least seven borides selected from diopter, titanium, chromium, zirconium, and vanadium. () The electrical contact material according to claim 3, wherein the iron group metal is at least one of nickel, iron, and cobalt.
JP56181922A 1981-11-13 1981-11-13 Electrical contact material Pending JPS5884938A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56181922A JPS5884938A (en) 1981-11-13 1981-11-13 Electrical contact material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56181922A JPS5884938A (en) 1981-11-13 1981-11-13 Electrical contact material

Publications (1)

Publication Number Publication Date
JPS5884938A true JPS5884938A (en) 1983-05-21

Family

ID=16109246

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56181922A Pending JPS5884938A (en) 1981-11-13 1981-11-13 Electrical contact material

Country Status (1)

Country Link
JP (1) JPS5884938A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1312421A3 (en) * 2001-11-06 2004-03-03 Bayer MaterialScience AG Flexible coated laminate

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1312421A3 (en) * 2001-11-06 2004-03-03 Bayer MaterialScience AG Flexible coated laminate
US7037590B2 (en) * 2001-11-06 2006-05-02 Bayer Aktiengesellschaft Water vapor-permeable coating composite

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