CN1219090C - Long lasting and self-lubricating silver-based electric contact material - Google Patents
Long lasting and self-lubricating silver-based electric contact material Download PDFInfo
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- CN1219090C CN1219090C CN 03111570 CN03111570A CN1219090C CN 1219090 C CN1219090 C CN 1219090C CN 03111570 CN03111570 CN 03111570 CN 03111570 A CN03111570 A CN 03111570A CN 1219090 C CN1219090 C CN 1219090C
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- silver
- self
- lubricating
- contact material
- contact
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Abstract
The present invention relates to self-lubricating silver-based electric contact material with long service life, which is characterized in that the self-lubricating silver-based electric contact material with long service life comprises: 0.5 to 20 wt% of ternary layered metal ceramic phases with a self-lubricating characteristic, surplus silver and unavoidable impurities. The present invention uses good conductivity and excellent high temperature oxidation resistance of ternary layered metal ceramic with the self-lubricating characteristic to partly or completely replace graphite to be added into a silver-based body. Thus, silver / metal ceramic composite contact material is made. Compared with silver graphite contact material, the new material guarantees high conductivity, high thermal conductivity, high strength and self-lubricating properties, simultaneously, greatly reduces the electrical erosion rate of material, and enhances the electrical service life of a contact. The present invention can completely replace the silver graphite contact material.
Description
Technical field:
The present invention's electricity field of functional materials provides the silver-based electric contact material with self-lubricating property and anti-arc erosion characteristic especially.
Background technology:
Silver graphite (AgC) contact is the important contact material of mesolow device for switching.As arcing contact, be widely used on the various protection electrical equipment, as isolating switch, miniature circuit breaker, protection motor switch or electric apparatus of electric leakage protection; As slider, be widely used in the whole slip ring of radar, pony pump and generator etc.This contact has many advantages: because graphite has good electrical conductivity, the distribution in silver matrix can not produce the bigger effect of isolating to matrix, the mechanical property that makes contact material keep high electric conductivity to become reconciled (1); (2) arcing time silver graphite contact surface forms wide graphite rete, suppresses the adhesion welding tendency of contact, makes contact have high resistance fusion welding; (3) the graphite constituent element can make the surface form the local reducing atmosphere during arcing, can play the automatically cleaning of contact surface and suppress the effect of counterpart contact oxidation, guarantees low and stable contact resistance; (4) the synusia shape structure of graphite makes silver-colored graphite contact have self-lubricating property.
Graphite is poor heat stability under arcing, and the tendency of stable arc is arranged, and makes that the arc erosion rate of silver-colored graphite contact is very high, and electric life is very short.Be badly in need of that development is a kind of to have similar high conduction, anti-melting welding, anti-oxidant and self-lubricating property but increase substantially the silver-based contact of electric life simultaneously.
The technology contents of invention:
The objective of the invention is to propose a kind of novel silver-based electric contact material, this material has significantly improved the contact life-span when guaranteeing original silver-based contact high conductivity, high thermal conductivity, anti-oxidant, self-lubricating property.
The invention provides a kind of long lifetime self-lubricating silver-based electric contact material, it is characterized in that consisting of of material: have the ternary layered sintering metal phase 0.5-20wt% of self-lubricating property, the silver of surplus and unavoidable impurities.
In the long lifetime self-lubricating silver-based electric contact material of the present invention, can also contain the carbon that is lower than 10wt%.
In the long lifetime self-lubricating silver-based electric contact material of the present invention, described ternary layered sintering metal with self-lubricating property can be selected from Ti mutually
3AlC
2, Ti
3SiC
2, Ti
2One or more of AlC.
Ternary layered sintering metal is as Ti
3AlC
2, Ti
3SiC
2, Ti
2AlC etc. are people's a series of type materials of developing out in recent years, are the synusia shape on these novel cermet material microtextures, have conduction preferably, heat conduction, high temperature resistant, anti-oxidant and excellent self-lubricating ability.Therefore can make silver-based contact have high conductivity, high thermal conductivity, anti-oxidant, self-lubricating and high arc erosion drag concurrently with this kind novel cermet material as additive.Thereby obtain a kind ofly can replacing silver-colored graphite contact, and reducing the long lifetime silver-based electric contact material of arc erosion speed significantly.
Embodiment:
Embodiment 1
With silicon titanium-carbide (Ti
3SiC
2) be added in the silver-based contact as a kind of interpolation.The electric conductivity of silicon titanium-carbide is about 9.6 * 10 than high 2 orders of magnitude of graphite
6Ω
-1m
-1, compressive strength, yang type modulus and hardness are respectively 900MPa, 326GPa, 4GPa, up to 1300 ℃ high temperature oxidation resistance, show the extremely low frictional coefficient of similar graphite in some specific occasion.
Silver powder, 5wt%Ti with 95wt%
3SiC
2The powder uniform mixing utilizes the production method of general silver based contact material, through coldmoulding, sinters base into, the Ag-Ti for preparing through operations such as hot extrusion, rolling, wire drawings
3SiC
2Contact.
Embodiment 2
With Ti
3AlC
2The sintering metal powder is added in the silver-colored graphite contact as a kind of interpolation.Silver powder, 2wt%Ti with 95wt%
3AlC
2The Graphite Powder 99 uniform mixing of powder and 3wt% is prepared Ag-Ti through conventional silver-based contact production method
3AlC
2-C contact.
Embodiment 3
With Ti
2AlC sintering metal powder is added in the silver-based contact as a kind of interpolation.Silver powder, 10wt%Ti with 90wt%
2AlC powder uniform mixing utilizes the production method of general silver based contact material, through coldmoulding, sinters base into, the Ag-Ti for preparing through operations such as hot extrusion, rolling, wire drawings
3The AlC contact.
Embodiment 4
With Ti
2AlC and Ti
3SiC
2The sintering metal powder is added in the silver-based contact as interpolation.Silver powder, 5wt%Ti with 90wt%
3SiC
2, 5wt%Ti
2AlC powder uniform mixing utilizes the production method of general silver based contact material, through coldmoulding, sinters base into, the Ag-Ti for preparing through operations such as hot extrusion, rolling, wire drawings
2AlC-Ti
3SiC
2Contact.
Embodiment 5
With Ti
2AlC and Ti
3SiC
2The sintering metal powder is added in the silver-based contact as interpolation.Silver powder, 5wt%Ti with 90wt%
3SiC
2, 2wt%Ti
2The Graphite Powder 99 uniform mixing of AlC, 3wt% utilizes the production method of general silver based contact material, through coldmoulding, sinters base into, the Ag-Ti for preparing through operations such as hot extrusion, rolling, wire drawings
2AlC-Ti
3SiC
2-C contact.
Claims (3)
1, a kind of long lifetime self-lubricating silver-based electric contact material is characterized in that consisting of of material: have the ternary layered sintering metal phase 0.5-20wt% of self-lubricating property, the silver of surplus and unavoidable impurities.
2,, it is characterized in that also containing in the material carbon that is lower than 10wt% according to the described long lifetime self-lubricating of claim 1 silver-based electric contact material.
3,, it is characterized in that described ternary layered sintering metal with self-lubricating property is selected from Ti mutually according to claim 1 or 2 described long lifetime self-lubricating silver-based electric contact materials
3AlC
2, Ti
3SiC
2, Ti
2One or more of AlC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03111570 CN1219090C (en) | 2003-04-29 | 2003-04-29 | Long lasting and self-lubricating silver-based electric contact material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03111570 CN1219090C (en) | 2003-04-29 | 2003-04-29 | Long lasting and self-lubricating silver-based electric contact material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1542149A CN1542149A (en) | 2004-11-03 |
| CN1219090C true CN1219090C (en) | 2005-09-14 |
Family
ID=34319799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03111570 Expired - Fee Related CN1219090C (en) | 2003-04-29 | 2003-04-29 | Long lasting and self-lubricating silver-based electric contact material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1219090C (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102505083A (en) * | 2011-10-29 | 2012-06-20 | 重庆川仪自动化股份有限公司 | Self-lubricating sliding contact material and layered composite material |
| CN102888549A (en) * | 2012-10-19 | 2013-01-23 | 武汉理工大学 | TiAl-C-Ag-Ti2AlC-TiC self-lubricating composite material and preparation method thereof |
| CN105624458A (en) * | 2016-02-29 | 2016-06-01 | 东南大学 | Preparation method for Ti3AlC2-strenghted Ag-based electrical contact material |
| CN106282641A (en) * | 2016-08-29 | 2017-01-04 | 江苏大学 | A kind of silver chromio electrical contact self-lubricating composite and its production and use |
| CN106498206A (en) * | 2016-09-28 | 2017-03-15 | 东南大学 | A kind of Ti3SiC2Strengthen the preparation method of Ag base electric contact materials |
| CN106834783A (en) * | 2017-02-17 | 2017-06-13 | 昆明贵金属研究所 | A kind of Ti2AlN CNT composite strengthening silver-based electric contact materials and preparation method thereof |
| CN107134376A (en) * | 2017-03-10 | 2017-09-05 | 昆明贵金属研究所 | A kind of stratiform Cu/Ag Ti2AlN electric contact composite materials and preparation method thereof |
| CN107254598A (en) * | 2017-05-10 | 2017-10-17 | 昆明贵金属研究所 | A kind of preparation method of silver-colored MAX phases sliding contact material |
| CN110016583B (en) * | 2018-11-16 | 2021-07-09 | 贵研铂业股份有限公司 | Gold-ceramic electric contact composite material and preparation method thereof |
| CN109797307B (en) * | 2019-01-09 | 2020-08-11 | 东南大学 | Ag/C @ Ti3AlC2Preparation method of contact material |
| CN110893466B (en) * | 2019-12-05 | 2022-10-18 | 沈阳理工大学 | Graphene-titanium-aluminum-carbon composite wear-resistant material |
-
2003
- 2003-04-29 CN CN 03111570 patent/CN1219090C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1542149A (en) | 2004-11-03 |
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