CN103210100B - Method for producing ag-oxide-based electrical contact material and electrical contact material produced by the method - Google Patents
Method for producing ag-oxide-based electrical contact material and electrical contact material produced by the method Download PDFInfo
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- CN103210100B CN103210100B CN201180054909.XA CN201180054909A CN103210100B CN 103210100 B CN103210100 B CN 103210100B CN 201180054909 A CN201180054909 A CN 201180054909A CN 103210100 B CN103210100 B CN 103210100B
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/04—Making non-ferrous alloys by powder metallurgy
- C22C1/05—Mixtures of metal powder with non-metallic powder
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/24—After-treatment of workpieces or articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/10—Alloys containing non-metals
- C22C1/1078—Alloys containing non-metals by internal oxidation of material in solid state
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
- C22C29/12—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on oxides
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C5/00—Alloys based on noble metals
- C22C5/06—Alloys based on silver
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Powder Metallurgy (AREA)
- Contacts (AREA)
- Manufacture Of Switches (AREA)
Abstract
Conventional Ag-oxide-based electrical contact materials that contain Zn are low in metal formability, which is indispensable to the production of an electrical contact, and are difficult to be rolled. Consequently, conventional Ag-oxide-based electrical contact materials containing Zn have not been put into practical use. [Solution] A method for producing an Ag-oxide-based electrical contact material, wherein an Ag alloy containing Zn is subjected to internal oxidation under the conditions of an oxygen partial pressure of 0.5-5.0 MPa and an oxidation temperature of 600-900 DEG C so that a plurality of fine cracks are generated at grain boundaries, and fine pieces and/or a powder obtained by pulverizing the internally oxidized Ag alloy is formed into a desired shape by compression molding, and then fired and extruded into a predetermined shape.
Description
Technical field
The present invention relates to the manufacture method of the oxide based electric contact material of Ag-and electric contact material therefrom.
Background technology
In the past, as the manufacture method of electric contact material, there is the manufacturing process utilizing rear oxidation method: make the alloy as blank by method of fusion, be rolled processing, press process etc. and be processed as contact shape, then carrying out internal oxidation process.
In addition, there is the manufacturing process utilizing preoxidation: make the alloy as blank by method of fusion, after being processed as sheet material etc., cut by compacting and manufacture fragment, after fragment is carried out internal oxidation process, compression molding is the shape of regulation, after extruding processing and by the materials processing that institute's compression molding obtains being wire rod or sheet material, be processed as contact shape (for example, referring to patent documentation 1).
In addition, having and utilize the manufacturing process of powder sintering: sinter after the shape by metal-powder compression molding being regulation, is contact shape (for example, referring to patent documentation 2) at rolling processing post-treatment.
Prior art document
Patent documentation
Patent documentation 1: Japanese Unexamined Patent Publication 7-258769 publication
Patent documentation 2: Japanese Unexamined Patent Publication 9-111364 publication
Summary of the invention
Invent problem to be solved
Such as, when using the alloy of the composition comprising Ag, Zn, Te, Cu, Sb to manufacture electric contact, the plastic working comprising the Ag alloy of Zn is poor, therefore, the processing difficulties such as rolling processing integral in the manufacture of contact, utilize the manufacture difficulty as the rear oxidation method of existing electric contact manufacture method and preoxidation.
In addition, even if when plastic working to a certain degree can be carried out, when carrying out internal oxidation process after being processed as contact shape, also can produce crack fine in a large number because oxidation is expanded at crystal boundary, become the state be highly brittle, be difficult to directly use as electric contact.Like this, comprise the oxide based electric contact material of Ag-of Zn, plastic working integral in the manufacture of electric contact is low, is difficult to be rolled processing, so there is no be practically used as electric contact material.
But, as the performance of the actual use of electric contact material, just can reduce the unit price of the contactor material be widely used, can provide and be suitable for mass-produced electric contact material as long as the Ag alloy comprising Zn possesses.
The present invention is to solve such problem for problem.
For solving the method for problem
Therefore, the present invention, in order to manufacture the oxide based electric contact material of the Ag-comprising Zn, is conceived to form by this low plastic working as Ag alloy feature that brings and under specific internal oxidation condition, produce a large amount of microscopic checks at crystal boundary and become the character be highly brittle.The present invention is by after being made ingot (ingot) by method of fusion, directly internal oxidation process is carried out with the state of ingot, a large amount of microscopic checks is produced at crystal boundary, become the state be highly brittle, then, by ingot is carried out pulverization process, obtain fragment or the powder of the Ag alloy completing internal oxidation process, then the fragment of this Ag alloy or powder are carried out compression molding with desired shape, and after sintering processes, be processed as the electric contact material of wire rod or sheet material by extruding processing, thus final contact shape can be processed as.
The present invention carries out internal oxidation process with oxygen partial pressure 0.5 ~ 5.0MPa, oxidizing temperature 600 ~ 900 DEG C.This is because according to experiment so far, beyond this internal oxidation condition, internal oxidation is not carried out, the Ag alloy comprising Zn can not obtain as the necessary character of internal oxidation type contact, and a large amount of microscopic checks can not be made to produce at crystal boundary and become the state be highly brittle, the cause for be shaped by Material compression necessary fragment or powder can not be made.
Here, about the reason being produced a large amount of microscopic checks by internal oxidation process of the present invention at crystal boundary, illustrate by testing the content recognized.
In the past, using when carrying out internal oxidation process as the Ag-Sn-In based material of electric contact main flow, although material can expand a little when material internal generates oxide compound, do not produce a large amount of microscopic checks at crystal boundary.
When Ag-Sn-In based material is carried out internal oxidation process, carry out internal oxidation from material surface and the concentration gradient of Sn, In etc. the Ag alloy produced to eliminate, Sn, In in Ag alloy spread to material surface gradually.Now, because the velocity of diffusion of Sn and In is than the O when internal oxidation
2fast from the speed of material surface diffusion, so, the gathering of a little oxide compound can be produced at material internal, produce the many positions of oxide compound and few position.Wherein, the position that oxide concentration is low is the state of easy viscous deformation.Produce when expanding being generated by the oxide compound with internal oxidation, the low and position that is easily viscous deformation of this oxide concentration is the position not producing microscopic checks because of absorbing the distortion that produced by this expansion.
But, when the Ag based material of the Zn of comprising of the present invention is carried out internal oxidation process, because Zn velocity of diffusion during internal oxidation is slower than the velocity of diffusion of Sn and In, O
2fast from the velocity of diffusion of material surface, so the oxide compound in Ag alloy generates fast, and oxide compound is dispersed on the whole, the gathering of oxide compound is difficult to occur.Therefore, compared to Ag-Sn-In based material, integral extension is low, and the oxide compound produced when can not be absorbed in internal oxidation expands, thus produces a large amount of microscopic checks at crystal boundary.Special under illustrated internal oxidation condition, obviously confirm this phenomenon.
Utilize illustrated manufacture method, the Ag based material comprising Zn being in the past difficult to manufacture electric contact just can be used to manufacture electric contact, the electric contact that contact Performance Ratio contactor material is in the past more excellent can be manufactured.
According to experiment so far, the known Ag based material as comprising Zn, is combined with the Ag of 98.7 ~ 50 quality %, the Zn of 1 ~ 40 quality %, Te, the Cu of 0.1 ~ 5.0 quality % of 0.1 ~ 3.0 quality %, the Ag based material of the Sb of 0.1 ~ 2.0 quality % can manufacture the electric contact of contact excellent performance.
In addition, known when adding Zn in Ag, by jointly adding these 3 kinds of elements of Te, Cu, Sb, the electric contact of contact excellent performance just can be manufactured.The mixing ratio of these 3 kinds of elements, when being less than above-mentioned minimum value respectively, can not obtain the effect of resistance to expendable and deposit resistance property.In addition, be greater than above-mentioned maximum value respectively if known, then can increase by contact resistance because oxide compound becomes too much, and then cause temperature to rise, become the major cause that deposition phenomenon is occurred.
The reason mixing ratio of Zn being set to 1 ~ 40 quality % is because when being less than 1 quality %, can not obtain the effect desired by oxide compound brings and lose the meaning of interpolation, if be greater than 40 quality %, being then difficult to manufacture as electric contact.
In addition, from experiment, if add further at least a kind in the Ni of the Sn of 0.5 ~ 8.0 quality %, the In of 1.0 ~ 6.0 quality %, 0.1 ~ 0.3 quality % in above-mentioned alloy, then control oxide evenly separated out, make crystal grain miniaturization comparatively effective.
The reason of mixing ratio of regulation Sn, In, Ni described above is because be less than 0.5 quality % at Sn, when In is less than 1.0 quality %, Ni is less than 0.1 quality %, can not obtain the cause that control oxide is evenly separated out, made the such effect of crystal grain miniaturization.In addition, known is that oxide compound will be assembled because if Sn is greater than 8.0 quality %, In is greater than 6.0 quality %, internal oxidation occurs bad, if Ni is greater than 0.3 quality %, then uniform melt just becomes difficulty.
In addition, experimentally, known by least a kind in scope interpolation Mn, Ga, Mg, Bi of 0.01 ~ 0.3 quality %, the performance as electric contact can be made more to improve.This is because by making fine oxide compound separate out in crystal structure, the cause that resistance to expendable, deposit resistance property improve can be made.In addition, can not get this result when the known addition at them is less than 0.01 quality %, if be greater than 0.3 quality %, then oxide compound can be assembled, and internal oxidation occurs bad.The effect of invention
The known electric contact obtained by electric contact material of the present invention, the multinomial electrical characteristic that deposit resistance property, resistance to electric arc expendable, contact resistance are low etc. are excellent, in various contact purposes, have excellent specific property.
Thus, as in Ag alloy containing Zn, the contactor material that is widely used, can provide unit price low, be suitable for mass-produced electric contact material.
Embodiment
By table 1, embodiments of the invention are described.
After the material of each embodiment represented in Table 1 being made the ingot of thickness 20mm, wide 50mm, long 50mm by fusing, directly with the state of ingot 800 DEG C, oxygen pressure 0.5MPa carries out the internal oxidation process of about 120 hours.
Then, use pulverizer to be pulverized by ingot, manufacture fragment and/or powder.Being, after desired shape, sinter the fragment of manufacture and/or powder compression molding, by extruding the wire rod being processed into diameter 4mm, further by Wire Drawing and thermal treatment, making the wire rod of diameter 2mm.Working modulus is now 75%.
Then, above-mentioned wire rod is formed processing by the press that is shaped, after becoming thick 0.8mm, the wide and long square for 2.5mm, DC200,300,350V carries out deposition test.
In addition, in order to compare, as conventional example, make the preoxidation type contact of two routine Ag-Sn-In systems, comparing test.
[ table 1 ]
* trial voltage: DC200,300,350V
Test number (TN): each 30 times
◎: excellence, zero: good, △: general
Claims (4)
1. a manufacture method for the oxide based electric contact material of Ag-, is characterized in that:
After the Ag alloy comprising Zn is made ingot by method of fusion, directly internal oxidation process is carried out with the condition of oxygen partial pressure 0.5 ~ 5.0MPa, oxidizing temperature 600 ~ 900 DEG C with the state of ingot, a large amount of microscopic checks is made to produce at crystal boundary thus, by by after being pulverized the fragment that obtains and/or powder compression molding and being desired shape, sinter, extrude the shape being processed as regulation
Wherein, the Ag alloy comprising Zn described in contains the Ag of 98.7 ~ 50 quality %, Zn, the Te of 0.1 ~ 3.0 quality % of 1 ~ 40 quality %, the Sb of the Cu of 0.1 ~ 5.0 quality % and 0.1 ~ 2.0 quality %.
2. the manufacture method of the oxide based electric contact material of Ag-as claimed in claim 1, is characterized in that:
Also add at least a kind in the Sn of 0.5 ~ 8.0 quality %, the In of 1.0 ~ 6.0 quality % and the Ni of 0.1 ~ 0.3 quality %.
3. the manufacture method of the oxide based electric contact material of Ag-as claimed in claim 2, is characterized in that:
Also add at least a kind in Mn, Ga, Mg, Bi of 0.01 ~ 0.3 quality %.
4. the oxide based electric contact material of Ag-, is characterized in that:
It is obtained by the manufacture method manufacture according to any one of claims 1 to 3.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010257162 | 2010-11-17 | ||
JP2010-257162 | 2010-11-17 | ||
PCT/JP2011/067374 WO2012066826A1 (en) | 2010-11-17 | 2011-07-28 | METHOD FOR PRODUCING Ag-OXIDE-BASED ELECTRICAL CONTACT MATERIAL AND ELECTRICAL CONTACT MATERIAL PRODUCED BY THE METHOD |
Publications (2)
Publication Number | Publication Date |
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CN103210100A CN103210100A (en) | 2013-07-17 |
CN103210100B true CN103210100B (en) | 2015-07-22 |
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Application Number | Title | Priority Date | Filing Date |
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CN201180054909.XA Expired - Fee Related CN103210100B (en) | 2010-11-17 | 2011-07-28 | Method for producing ag-oxide-based electrical contact material and electrical contact material produced by the method |
Country Status (5)
Country | Link |
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JP (1) | JP5426752B2 (en) |
KR (1) | KR101609911B1 (en) |
CN (1) | CN103210100B (en) |
TW (1) | TW201231682A (en) |
WO (1) | WO2012066826A1 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
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CN104419844A (en) * | 2013-08-23 | 2015-03-18 | 光洋应用材料科技股份有限公司 | Silver alloy material |
KR101516483B1 (en) * | 2013-09-05 | 2015-05-04 | 희성금속 주식회사 | METHOD FOR PREPARING OF Ag-OXIDE BASED ELECTRICAL CONTACT MATERIAL |
KR20160062411A (en) * | 2014-11-25 | 2016-06-02 | 희성금속 주식회사 | METHOD FOR PREPARING OF Ag-OXIDE BASED ELECTRICAL CONTACT MATERIAL FOR ELECTRIC SWITCH |
KR102290451B1 (en) * | 2019-12-23 | 2021-08-17 | 박준성 | Method for manufacturing contact material |
CN112059168B (en) * | 2020-08-08 | 2022-07-05 | 浙江福达合金材料科技有限公司 | Method for preparing silver metal oxide electric contact material based on nano silver wire modification and 3D gradient printing and product thereof |
JP2022077654A (en) * | 2020-11-12 | 2022-05-24 | オムロン株式会社 | MATERIAL FOR CONTACT HAVING Ag ALLOY AS MAIN COMPONENT, CONTACT USING THE MATERIAL FOR CONTACT, AND ELECTRIC APPLIANCE |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1443864A (en) * | 2003-04-17 | 2003-09-24 | 章景兴 | Silver tin-oxide zinc-oxide alloy electric contact and its production process |
JP2009030099A (en) * | 2007-07-26 | 2009-02-12 | Mitsubishi Material Cmi Kk | Silver-oxide based electrical contact material |
CN101608279A (en) * | 2009-07-20 | 2009-12-23 | 温州宏丰电工合金有限公司 | Silver oxide electrical contact material and preparation method thereof |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58152315A (en) * | 1982-03-04 | 1983-09-09 | 古河電気工業株式会社 | Method of producing silver-oxide contact material |
JPS5967346A (en) * | 1982-10-08 | 1984-04-17 | Omron Tateisi Electronics Co | Electrical contact material |
TW517095B (en) | 1999-04-23 | 2003-01-11 | Tanaka Precious Metal Ind Co L | Method for producing Ag-ZnO electric contact material and electric contact material produced thereby |
-
2011
- 2011-07-28 CN CN201180054909.XA patent/CN103210100B/en not_active Expired - Fee Related
- 2011-07-28 JP JP2012501070A patent/JP5426752B2/en not_active Expired - Fee Related
- 2011-07-28 WO PCT/JP2011/067374 patent/WO2012066826A1/en active Application Filing
- 2011-07-28 KR KR1020137012762A patent/KR101609911B1/en active IP Right Grant
- 2011-11-16 TW TW100141777A patent/TW201231682A/en unknown
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1443864A (en) * | 2003-04-17 | 2003-09-24 | 章景兴 | Silver tin-oxide zinc-oxide alloy electric contact and its production process |
JP2009030099A (en) * | 2007-07-26 | 2009-02-12 | Mitsubishi Material Cmi Kk | Silver-oxide based electrical contact material |
CN101608279A (en) * | 2009-07-20 | 2009-12-23 | 温州宏丰电工合金有限公司 | Silver oxide electrical contact material and preparation method thereof |
Also Published As
Publication number | Publication date |
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KR20140001901A (en) | 2014-01-07 |
JP5426752B2 (en) | 2014-02-26 |
TW201231682A (en) | 2012-08-01 |
CN103210100A (en) | 2013-07-17 |
WO2012066826A1 (en) | 2012-05-24 |
KR101609911B1 (en) | 2016-04-06 |
JPWO2012066826A1 (en) | 2014-05-12 |
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