CN103762099A - Silver-based composite oxide electrical contact material and application thereof - Google Patents
Silver-based composite oxide electrical contact material and application thereof Download PDFInfo
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- CN103762099A CN103762099A CN201310710953.2A CN201310710953A CN103762099A CN 103762099 A CN103762099 A CN 103762099A CN 201310710953 A CN201310710953 A CN 201310710953A CN 103762099 A CN103762099 A CN 103762099A
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- contact material
- electric contact
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Abstract
The invention relates to a silver-based composite oxide electrical contact material and application of the silver-based composite oxide electrical contact material in the production process of relays. The silver-based composite oxide electrical contact material comprises two layers, wherein one layer is an AgW30 layer, and the other layer is a silver-based composite oxide layer. The two layers are fixed through fusion. The silver-based composite oxide layer is prepared from Ag, Zn, La and Ti. The silver-based composite oxide electrical contact material improves contact performance, saves silver materials and greatly reduces the cost.
Description
Technical field
The present invention relates to money base composite oxides electric contact material and application thereof, be particularly suitable for exchanging the electric contact material with relay or automobile lift-launch relay.
Background technology
China's relay industry, its production technology, production technology are mainly produced with the cheap labour-intensive mode of production for a long time, thereby product quality, performance and price all have weak point in competition in the international market, the properties of product of a same specification have very large difference.Therefore, the outlet of domestic relay industry is to improve constantly on the basis of the part accuracy of manufacture, focus on development and the improvement of Assembling Production pattern and the raising of reliability of product, to realizing automation or the semi-automation of Assembling Production technique, finally realize production integrated, thereby improve product technology class and technology content, improve quality, reduce costs.The performance of home products has very large gap with external advanced enterprises.Research for the material of contact part silver alloy still rests on laboratory stage.
As the electric contact material of assembling in the relay using under general AC load, common are Ag-CdO is electric contact material.Ag-CdO is that slider material is as electric contact material, to have the characteristics such as deposit resistance property, resistance to expendable and contact resistance stability.But Cd is the element poisonous to human body, considers recent environmental problem, does not preferably manufacture and uses it.Therefore, need to carry out not containing the exploitation of the electric contact material of Cd.
As in the alternating current general-purpose relay of AC load etc., use not containing the material of Cd, the clear 54-110124 of patent documentation TOHKEMY and patent documentation JP examined patent publication 55-4825 disclose Ag-SnO
2system and Ag-SnO
2-In
2o
3system waits the oxide based electric contact material of Ag-.Wherein known, Ag-SnO
2under the capacity load that the electric contact material of system occurs at impulse current, shown very good deposit resistance property.But, under inductive load, be that electric contact material is compared with Ag-CdO in the past, Ag-SnO
2the resistance to consumption characteristics that is electric contact material is slightly poor, therefore, is difficult to guarantee that with Ag-CdO be the equal or better durability of electric contact material.Known in addition, Ag-SnO
2be in electric contact material, also to contain In
2o
3ag-SnO
2-In
2o
3be electric contact material, significantly improved Ag-SnO
2be the resistive load of electric contact material and the resistance to expendable to inductive load, being that electric contact material is same with Ag-CdO has a wear properties good to various load balancings.But In is rare metal, and just used in a large number as the raw material of the ito transparent electrode in the display unit such as recent liquid crystal or plasma, therefore In resource is faced with exhausted problem, and In big bulge in price, also has influence on electric contact material manufacturing cost.
In addition, domestic also have following patent documentation to the research of ag-based contact material: CN1417817A, CN1425790A, CN1441071A, CN1167835A, CN101202169A, CN1443864A etc.
Summary of the invention
The present invention is directed to the deficiency of above existence, a kind of money base composite oxides electric contact material is provided, and uses it in relay, this money base composite oxides electric contact material has good mechanics and electricity combination property.
For realizing above-mentioned object, the invention provides a kind of money base composite oxides electric contact material, this money base composite oxides electric contact material, comprise two-layer, wherein one deck is AgW30 layer, another layer is silver-colored composite oxide layer, fixes between two-layer by fusion, and wherein the preparation method of the composite oxide layer of silver comprises the following steps:
(1) alloy melting, forms alloy melt through melting after Ag, Zn, La, Ti are mixed by following mass percent, and wherein Zn is that 2-5%, La are that 0.5-1%, Ti are 2-5%, and surplus is Ag;
(2) powder by atomization, makes alloy powder by alloy melt through the atomization of high-pressure atomization equipment;
(3) isostatic pressing ingot, is processed into embryo ingot by alloy powder by isostatic pressing ingot;
(4) sintering carries out embryo ingot sintering in non-oxidative medium, and sintering temperature is 450 ℃-600 ℃ and obtains alloy powder sintered ingot;
(5) through extruding, alloy powder sintered ingot is crushed to extrusion plate;
(6) oxidation in, the sheet material that step (5) is made makes described money base composite oxides electric contact material by internal oxidation.
In a preferred embodiment of the present invention, further arranging is that in described step (1), smelting temperature is 600 ℃-800 ℃.
In a preferred embodiment of the present invention, wherein Zn is 5%, La is 1%, Ti is 5%.
In a preferred embodiment of the present invention, described step (2) powder by atomization is gas-atomized powder, and wherein aerosolization pressure is at 10MPa-15MPa.
In a preferred embodiment of the present invention, the hydrostatic pressure in described step (3) is controlled at 100MPa-150MP.
In a preferred embodiment of the present invention, in described step (4), non-oxidative medium is vacuum or or nitrogen atmosphere.
In a preferred embodiment of the present invention, 500 ℃-700 ℃ of the extrusion temperatures in described step (5), extrusion ratio >=80.
In a preferred embodiment of the present invention, in described step (6), internal oxidation process condition is controlled at: pure oxygen pressure 0.5-1MPa, temperature 500-700 ℃.
In a preferred embodiment of the present invention, the quality percentage composition that in described AgW30 layer, the quality percentage composition of silver is 70%, W is 30%.
The invention still further relates to the production process for relay by above-mentioned money base composite oxides electric contact material.
In concrete use, using AgW30 layer as solder side, the composite oxide layer of silver is as working face.Using this silver-colored composite oxide layer as working face, make this material there is good erosion resisting and resistance fusion welding energy, and there is good break-make performance.The present invention is by the selection to metal and the optimization of proportioning, and the structural design to electric contact material, when improving contact performance, has also saved the consumption of ag material, greatly reduces cost.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is further described.
Fig. 1 is the schematic diagram of money base composite oxides electric contact material of the present invention
Wherein 1 represents AgW30 layer, and 2 represent silver-colored composite oxide layer.
Embodiment
Below in conjunction with accompanying drawing explanation and embodiment, the invention will be further described:
Money base composite oxides electric contact material A comprises two-layer, and wherein one deck is AgW30 layer, and another layer is silver-colored composite oxide layer, fixes between two-layer by fusion, and wherein the preparation method of the composite oxide layer of silver comprises the following steps:
(1) alloy melting, forms alloy melt through melting after Ag, Zn, La, Ti are mixed by following mass percent, and wherein Zn is 5%, La is 1%, Ti is 5%, and surplus is Ag, and smelting temperature is 600 ℃;
(2) gas-atomized powder, makes alloy powder by alloy melt through the atomization of high-pressure atomization equipment, and wherein aerosolization pressure is at 10MPa;
(3) isostatic pressing ingot, is processed into embryo ingot by alloy powder by isostatic pressing ingot, and pressure is controlled at 150MPa;
(4) sintering carries out embryo ingot sintering in nitrogen atmosphere, and sintering temperature is 500 ℃ and obtains alloy powder sintered ingot;
(5) through extruding, alloy powder sintered ingot is crushed to extrusion plate, 600 ℃ of extrusion temperatures, extrusion ratio >=80;
(6) oxidation in, the sheet material that step (5) is made makes described money base composite oxides electric contact material by internal oxidation, wherein 500 ℃ of pure oxygen pressure 1MPa, temperature.
Money base composite oxides electric contact material B comprises two-layer, and wherein one deck is AgW30 layer, and another layer is silver-colored composite oxide layer, fixes between two-layer by fusion, and wherein the preparation method of the composite oxide layer of silver comprises the following steps:
(1) alloy melting, forms alloy melt through melting after Ag, Zn, La, Ti are mixed by following mass percent, and wherein Zn is 2%, La is 0.5%, Ti is 5%, and surplus is Ag, and smelting temperature is 800 ℃;
(2) gas-atomized powder, makes alloy powder by alloy melt through the atomization of high-pressure atomization equipment, and wherein aerosolization pressure is at 15MPa;
(3) isostatic pressing ingot, is processed into embryo ingot by alloy powder by isostatic pressing ingot, and pressure is controlled at 120MPa;
(4) sintering carries out embryo ingot sintering in nitrogen atmosphere, and sintering temperature is 600 ℃ and obtains alloy powder sintered ingot;
(5) through extruding, alloy powder sintered ingot is crushed to extrusion plate, 500 ℃ of extrusion temperatures, extrusion ratio >=80;
(6) oxidation in, the sheet material that step (5) is made makes described money base composite oxides electric contact material by internal oxidation, wherein 700 ℃ of pure oxygen pressure 0.5MPa, temperature.
The money base composite oxides electric contact material that above-described embodiment 1 and 2 is prepared carries out the performance test results and sees the following form 1.
Table 1
| ? | Embodiment 1(A) | Embodiment 2(B) |
| Conductance (μ Ω .cm) | 3.6 | 3.2 |
| Tensile strength (MPa) | 408 | 401 |
| Hardness (HV) | 145 | 142 |
| Endurance life number of times | 50389 | 48970 |
| Current capacity (A) | 32A | 30A |
Above embodiment shows and has described basic principle of the present invention and principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; that in above-described embodiment and specification, describes just illustrates principle of the present invention; rather than limit the scope of the invention by any way; without departing from the scope of the invention; the present invention also has various changes and modifications, and these changes and improvements all fall in claimed scope.
Claims (10)
1. a money base composite oxides electric contact material, it is characterized in that, this money base composite oxides electric contact material comprises two-layer, wherein one deck is AgW30 layer, another layer is silver-colored composite oxide layer, between two-layer, by fusion, fix, wherein the preparation method of the composite oxide layer of silver comprises the following steps:
(1) alloy melting, forms alloy melt through melting after Ag, Zn, La, Ti are mixed by following mass percent, and wherein Zn is that 2-5%, La are that 0.5-1%, Ti are 2-5%, and surplus is Ag;
(2) powder by atomization, makes alloy powder by alloy melt through the atomization of high-pressure atomization equipment;
(3) isostatic pressing ingot, is processed into embryo ingot by alloy powder by isostatic pressing ingot;
(4) sintering carries out embryo ingot sintering in non-oxidative medium, and sintering temperature is 450 ℃-600 ℃ and obtains alloy powder sintered ingot;
(5) through extruding, alloy powder sintered ingot is crushed to extrusion plate;
(6) oxidation in, the sheet material that step (5) is made makes described money base composite oxides electric contact material by internal oxidation.
2. money base composite oxides electric contact material according to claim 1, is characterized in that in described step (1), smelting temperature is 600 ℃-800 ℃.
3. money base composite oxides electric contact material according to claim 1, is characterized in that Zn is 5%, La is 1%, Ti is 5%.
4. money base composite oxides electric contact material according to claim 1, is characterized in that described step (2) powder by atomization is gas-atomized powder, and wherein aerosolization pressure is at 10MPa-15MPa.
5. money base composite oxides electric contact material according to claim 1, is characterized in that the hydrostatic pressure in described step (3) is controlled at 100MPa-150MP.
6. money base composite oxides electric contact material according to claim 1, is characterized in that in described step (4), non-oxidative medium is vacuum or or nitrogen atmosphere.
7. money base composite oxides electric contact material according to claim 1, is characterized in that 500 ℃-700 ℃ of extrusion temperatures in described step (5), extrusion ratio >=80.
8. money base composite oxides electric contact material according to claim 1, is characterized in that in described step (6), internal oxidation process condition is controlled at: pure oxygen pressure 0.5-1MPa, temperature 500-700 ℃.
9. according to the money base composite oxides electric contact material described in claim 1-8, the quality percentage composition that the quality percentage composition that it is characterized in that silver in described AgW30 layer is 70%, W is 30%.
10. the application in the production process of relay according to the money base composite oxides electric contact material described in claim 1-9.
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| CN201310710953.2A CN103762099B (en) | 2013-12-20 | 2013-12-20 | A kind of money base composite oxides electric contact material and application thereof |
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| CN103762099B CN103762099B (en) | 2016-06-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110391095A (en) * | 2019-08-23 | 2019-10-29 | 浙江大学 | Single side internal oxidized Ag tin oxide or indium oxide contact material and preparation method thereof |
Citations (6)
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|---|---|---|---|---|
| US3864827A (en) * | 1971-09-01 | 1975-02-11 | Siemens Ag | Method for making an electric contact by powder metallurgy and the resulting contact |
| JPS54149322A (en) * | 1978-05-17 | 1979-11-22 | Tanaka Precious Metal Ind | Electric contact material |
| CN101609755A (en) * | 2009-07-08 | 2009-12-23 | 中南大学 | A kind of preparation method of silver-metallic oxide electrical contact material |
| CN102290261A (en) * | 2011-05-27 | 2011-12-21 | 浙江乐银合金有限公司 | Silver copper based metal oxide electrical contact material containing adding elements and preparation method thereof |
| CN102312119A (en) * | 2010-06-29 | 2012-01-11 | 福达合金材料股份有限公司 | Preparation method for silver tin oxide electrical contact material |
| CN103035419A (en) * | 2012-11-30 | 2013-04-10 | 浙江帕特尼触头有限公司 | Silver-and copper-based composite contact materials |
-
2013
- 2013-12-20 CN CN201310710953.2A patent/CN103762099B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3864827A (en) * | 1971-09-01 | 1975-02-11 | Siemens Ag | Method for making an electric contact by powder metallurgy and the resulting contact |
| JPS54149322A (en) * | 1978-05-17 | 1979-11-22 | Tanaka Precious Metal Ind | Electric contact material |
| CN101609755A (en) * | 2009-07-08 | 2009-12-23 | 中南大学 | A kind of preparation method of silver-metallic oxide electrical contact material |
| CN102312119A (en) * | 2010-06-29 | 2012-01-11 | 福达合金材料股份有限公司 | Preparation method for silver tin oxide electrical contact material |
| CN102290261A (en) * | 2011-05-27 | 2011-12-21 | 浙江乐银合金有限公司 | Silver copper based metal oxide electrical contact material containing adding elements and preparation method thereof |
| CN103035419A (en) * | 2012-11-30 | 2013-04-10 | 浙江帕特尼触头有限公司 | Silver-and copper-based composite contact materials |
Non-Patent Citations (1)
| Title |
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| 王松等: "银基电接触材料的研究现状及发展趋势", 《贵金属》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110391095A (en) * | 2019-08-23 | 2019-10-29 | 浙江大学 | Single side internal oxidized Ag tin oxide or indium oxide contact material and preparation method thereof |
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| CN103762099B (en) | 2016-06-22 |
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