CN1180105C - Silver-base electric contact composite material - Google Patents
Silver-base electric contact composite material Download PDFInfo
- Publication number
- CN1180105C CN1180105C CNB021029725A CN02102972A CN1180105C CN 1180105 C CN1180105 C CN 1180105C CN B021029725 A CNB021029725 A CN B021029725A CN 02102972 A CN02102972 A CN 02102972A CN 1180105 C CN1180105 C CN 1180105C
- Authority
- CN
- China
- Prior art keywords
- contact
- silver
- composite material
- electric contact
- base electric
- 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 - Fee Related
Links
Abstract
The present invention relates to silver-base electric contact composite material which has the material compositions of LaSnO3+Ag and Ag as the rest. The composite material has excellent combination property, low and stable contact resistance, and no pollution to application environment, and can be used as AC /DC contact material of medium loads.
Description
The present invention relates to silver-base electric contact composite material.
In existing contact material, most widely used is silver-based electric contact material.This is to have high conductivity, high thermal conductivity, favorable mechanical processibility by silver, not oxidation under atmospheric condition, and character determined to keep low and stable contact resistance etc.But low, the easy melting welding of fine silver contact material hardness, under the DC operation condition, material transfer tendency is serious.At present silver-based electric contact material mainly contains series product such as AgCu, AgCd, AgC, AgW, AgFe, AgNi, and AgCd, AgCdO material are owing to replaced by other material gradually the pollution of human body and environment, as AgNi, AgSnO
2At present, the low-voltage apparatus that has worked out has hundreds of with contact material, and the contact material that forms industrialization and practical application has tens kinds.They can reduce three kinds of series basically: 1. silver-metallic oxide (Ag-CdO, Ag-SnO
2, Ag-ZnO etc.); 2. money base pseudoalloy (Ag-Ni, Ag-W, Ag-C etc.); 3. silver-base alloy (Ag-Cu, Ag-RE etc.).In above-mentioned contact material, silver-metallic oxide is optimal material, and the Ag-CdO material is used in the mesolow electrical equipment for a long time as contact material.Along with people to the progressively intensification of cadmium metal and Cadmium oxide to human body and environmental pollution understanding, this traditional contact material progressively is eliminated.From present research and production practice, Ag-SnO
2Material possesses than the better comprehensive electrochemical properties of congruent Ag-CdO material, and also more congruent Ag-CdO material is difficult to produce in batches simultaneously.Work as SnO
2Content can't carry out cold deformation basically greater than 12% o'clock and process.The Ag-ZnO material possesses to be had and the suitable comprehensive electrochemical properties of congruent Ag-CdO material, also is easier to suitability for industrialized production.Therefore these two kinds of materials are considered to be hopeful most to substitute the material of Ag-CdO.
Siller tin oxide is the leading material that substitutes Agcdo at present.Siller tin oxide also has following characteristic except the characteristic with general siluer metal oxide: contact resistance and resistance fusion welding are higher; Low material transfer characteristic; Electric life is than Agcdo height.Common silver tin oxide material preparation technology has prior powder metallurgy method, internal oxidation and coprecipitation method.All there is a common shortcoming in the whole bag of tricks, and promptly in the cold deformation course of processing in material later stage, silver tin oxide material shows intensity, hardness height, the preliminary work hardening rate height, and characteristic such as the unit elongation changing down is fast is brought big difficulty to production in enormous quantities.This just makes that this excellent material is difficult to satisfy that modern industry is in enormous quantities in producing, high quality, requirement cheaply.Be widely used at developed country's silver tin oxide material at present.Domesticly also need a large amount of imports.
The purpose of this invention is to provide a kind of electrically contact use silver-based composite material, this matrix material has pollution-free and characteristics that be easy to produce in batches.
For realizing the object of the invention, the composition (weight %) that electrically contacts with silver-based composite material is: content is the LaSnO of 5-20
3, surplus is Ag.
The present invention passes through Ag-SnO
2Contact material carries out structurally-modified processing, can strengthen metal oxide and combine wetting property with the interface of silver matrix, when improving and guaranteeing the contact material excellent electrical properties, has improved Drawing abillity.Silver is born conducting function in electric contact composite material, composite oxides LaSnO
3Mainly play the effect that improves the dynamic electrical contact performance of matrix material.Of the present invention electrically contact with silver-based composite material adopt the preparation of following method:
1. with Powdered La
2O
3With SnO
2Behind the uniform mixing, press down knot in 10-20Mpa pressure, 1100-1500 ℃ of following sintering carries out solid phase synthesis, prepares LaSnO
3Composite oxides;
2. according to the difference of environment for use condition, with Ag powder and LaSnO
3Composite oxide power mixes by a certain percentage and can obtain composite powder, prepares various forms of contacts raw material by powder metallurgy process afterwards, as: silk material, sheet material or sheet material etc.
Contact material of the present invention, under moderate duty electrically contacts condition, its excellent combination property, contact resistance is low and stable.From results of performance analysis shown in the table 1, contact material of the present invention can in very large range substitute existing Ag-CdO or Ag-SnO
2Use.PM represents powder metallurgy process in the table.The contact material technological process of production of the present invention is simple, and processing parameter is controlled easily, produces quality product in batches and guarantees easily.
Performance comparison under table 1 invention contact material and the existing contact material same experimental conditions
| Material | The preparation method | Resistivity (μ Ω .cm) | Electric life (ten thousand times) | Contact loss in weight (mg) | ||
| Exchange | Direct current | Exchange | Direct current | |||
| AgCdO(12) | PM | 2.15 | 6.5 | 6.1 | -149 | -216 |
| AgSnO 2(10) | PM | 2.27 | 9.4 | 5.2 | -351 | -354 |
| AgLaSnO 3(5) | PM | 2.17 | 9.6 | 6.2 | -187 | -206 |
| AgLaSnO 3(15) | PM | 2.24 | 10 | 8 | -192 | -224 |
| AgLaSnO 3(20) | PM | 2.31 | 10 | 10 | -183 | -258 |
Example 1. is by weight Ag 95%, LaSnO
35%, two kinds of material powder behind mechanically mixing, mold pressing, high temperature sintering, are adopted hot extrusion, heat forged, rolling or be drawn into sheet material or silk material contact raw material, its density can reach 9.9g/cm
3, resistivity is less than 2.2 * 10
-6Ω cm.The Ag-LaSnO that finally makes
3/ Cu composite contact is exchanging 220v, 15A, locking force 100g, and disjunction power 75g under 110 times/minute conditions of contact frequency, does not find the melting welding phenomenon, the life-span is greater than 90,000 times.At direct current 24v, 15A, locking force 100g, disjunction power 75g under 110 times/minute conditions of contact frequency, does not find the melting welding phenomenon, the life-span is greater than 60,000 times.
Example 2. is by weight Ag 85%, LaSnO
315%, two kinds of material powder behind mechanically mixing, mold pressing, high temperature sintering, are adopted hot extrusion, heat forged, rolling or be drawn into sheet material or silk material contact raw material, its density can reach 9.79g/cm
3, resistivity is less than 2.3 * 10
-6Ω cm.The Ag-LaSnO that finally makes
3/ Cu composite contact is exchanging 220v, 15A, locking force 100g, and disjunction power 75g under 110 times/minute conditions of contact frequency, does not find the melting welding phenomenon, the life-span is greater than 100,000 times.At direct current 24v, 15A, locking force 100g, disjunction power 75g under 110 times/minute conditions of contact frequency, does not find the melting welding phenomenon, the life-span is greater than 80,000 times.
Example 3. is by weight Ag 80%, LaSnO
320%, two kinds of material powder behind mechanically mixing, mold pressing, high temperature sintering, are adopted hot extrusion, heat forged, rolling or be drawn into sheet material or silk material contact raw material, its density can reach 9.75g/cm
3, resistivity is less than 2.4 * 10
-6Ω cm.The Ag-LaSnO that finally makes
3/ Cu composite contact is exchanging 220v, 15A, locking force 100g, and disjunction power 75g under 110 times/minute conditions of contact frequency, does not find the melting welding phenomenon, the life-span is greater than 100,000 times.At direct current 24v, 15A, locking force 100g, disjunction power 75g under 110 times/minute conditions of contact frequency, does not find the melting welding phenomenon, the life-span is greater than 100,000 times.
Claims (1)
1. one kind electrically contacts and uses silver-based composite material, and it is characterized in that its composition (weight %) is: content is the LaSnO of 5-20
3, surplus is Ag.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021029725A CN1180105C (en) | 2002-02-09 | 2002-02-09 | Silver-base electric contact composite material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021029725A CN1180105C (en) | 2002-02-09 | 2002-02-09 | Silver-base electric contact composite material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1436867A CN1436867A (en) | 2003-08-20 |
| CN1180105C true CN1180105C (en) | 2004-12-15 |
Family
ID=27627713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021029725A Expired - Fee Related CN1180105C (en) | 2002-02-09 | 2002-02-09 | Silver-base electric contact composite material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1180105C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102618773B (en) * | 2012-04-05 | 2013-06-19 | 浙江大学 | Method for preparing Ag/La1-xSrxCoO3 electric contact composite material |
-
2002
- 2002-02-09 CN CNB021029725A patent/CN1180105C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1436867A (en) | 2003-08-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107794389B (en) | Silver tin oxide indium oxide electric contact material and preparation method thereof | |
| CN101649401B (en) | Ag-Ni-oxide electrical contact material and preparation method thereof | |
| CN103489665B (en) | The preparation method of high breaking low-voltage electrical apparatus contact material, the preparation method of high breaking low-voltage electrical apparatus composite contact material | |
| CN100417736C (en) | Method for preparing alumina dispersion-strenghtened copper-base composite material | |
| CN109576529B (en) | High-performance dispersion copper alloy and preparation method thereof | |
| CN1940116A (en) | Zero-sintering and hydrogen-expansion nano-diffusion reinforced Cu-Al2O3 alloy and its production | |
| CN106086495B (en) | Cupric oxide doped siller tin oxide composite and preparation method thereof | |
| CN1477219A (en) | Preparation method of siluer metal oxide electric contact material | |
| CN101562081B (en) | Preparation method of silver-saving laminating composite contact terminal piece | |
| CN112375937A (en) | Powder metallurgy near-net-shape forming preparation method of dispersion copper composite electrical contact | |
| CN103586470B (en) | Preparation method of siluer metal oxide graphite composite electric contact material and products thereof | |
| CN112620640A (en) | Preparation method of AgNi electrical contact material based on recycling of AgC scrap | |
| CN114262815B (en) | Silver-metal oxide composite material, preparation method thereof and application of silver-metal oxide composite material as electrical contact material | |
| JP6719300B2 (en) | Ag-Ni-metal oxide-based electrical contact material, method for producing the same, circuit breaker and electromagnetic contactor | |
| CN106854710B (en) | A kind of preparation method and device of silver-based electric contact material | |
| CN110499435B (en) | Silver-based electric contact material and preparation method thereof | |
| CN109593981B (en) | Preparation method of silver tin oxide contact material for improving sintering property of ingot blank | |
| CN113122745A (en) | Preparation method of silver tin oxide composite electric contact material | |
| CN101034633A (en) | Electrical contact material doping AgSnO2 and its preparing method | |
| CN1022424C (en) | Spindle alloy of tungsten-copper-silver-nickel by powder metallurgy | |
| CN1180105C (en) | Silver-base electric contact composite material | |
| CN102031409A (en) | Silver-boron nitride-cerium switch apparatus contact material and preparation method thereof | |
| CN1164779C (en) | Silver base electric contact composite material | |
| CN1033524C (en) | Silver-tase alloy electric probe material | |
| CN114101666B (en) | Graphene-based silver-saving electrical contact material and manufacturing method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |