CN110016583A - A kind of gold-ceramics electrical contact composite material and preparation method - Google Patents
A kind of gold-ceramics electrical contact composite material and preparation method Download PDFInfo
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- CN110016583A CN110016583A CN201910130053.8A CN201910130053A CN110016583A CN 110016583 A CN110016583 A CN 110016583A CN 201910130053 A CN201910130053 A CN 201910130053A CN 110016583 A CN110016583 A CN 110016583A
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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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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
- C22C32/0005—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with at least one oxide and at least one of carbides, nitrides, borides or silicides as the main non-metallic constituents
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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
- C22C5/02—Alloys based on gold
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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
- B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
- B22F2998/10—Processes characterised by the sequence of their steps
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Abstract
The invention discloses a kind of gold-ceramics electrical contact composite material and preparation method, composite material compositions (weight %) are as follows: ceramics (Ti3SiC2) are as follows: 1%~5%, zinc oxide (ZnO) are as follows: 0.1%~5.0%, rare earth oxide (Sm2O3) are as follows: 0.1%~5.0%, rare earth oxide (Gd2O3) are as follows: 0.1%~5.0%, surplus is gold.Preparation method includes: to prepare the bronze of electrolysis method preparation by weight percentage with ceramic powder, is put into high-energy stirring formula ball mill and is uniformly mixed, then using the processing such as isostatic cool pressing, vacuum-sintering, hot extrusion, drawing, rolling.Present invention is characterized in that preparation process is simple, no pollution to the environment, the excellent combination property and stabilization of composite material are suitable for preparing contact materials such as commutator, slip ring, brush, electrode etc..
Description
Technical field
The present invention relates to a kind of gold-ceramics electrical contact composite material and preparation methods, belong to auri electrical material field.
Background technique
Auri electrical material mainly has AuNi, AuCu, AuAg, AuAgCu, AuPd, AuAgNi, AuLa2O3、AuY2O3Deng,
It is mainly used as the materials such as brush, commutator, slip ring, the electrode in the electro-mechanical arts of robot, unmanned plane, electric car etc..So
And main problem existing for the auri electrical material of tradition is now: (1) wearing no resistance, noise is big；(2) hardness, intensity
Height is mismatched with conductivity；(3) comprehensive performance is unstable, and working life is short etc..In order to solve this contradiction, generally use more
Composite of first alloying and auri material etc. solves, however, the use with infant industry to material under severe conditions
The raising that performance and stability require needs that auri electrical material is made to have more excellent hardness, intensity, wearability and conduction
Performance.
Related industry mechanism has carried out a large amount of research-and-development activity both at home and abroad.In the world such as, Belgian Umicore
Company (Umicore), the Mai Telong company (Metalor) of Holland, the Dege Sa company (Degussao) of Germany, the U.S. are mostly
Gram company (Doduco), Tanaka company (Tanaka) of Japan etc.；The country, such as Kunming Institute of Precious Metals, Beijing non-ferrous metal
Research institute, Xibei Inst. of Non-Ferrous Metals, Foshan Precision Electrical Alloy Co., Ltd., Guilin Jin Ge electrician Co., Ltd, Tianjin
The mostly units such as gram electrical alloy Co., Ltd, have carried out a large amount of research work.
In the serial electric contact composite material of gold-ceramics, Ti3AlC2, ZnO material be a kind of comparatively ideal self-lubricating material,
It is with excellent conduction, heating conduction, the features such as biggish draw ratio and specific surface area, with nonferrous metals matrix wettability
It is good, by the extensive concern of electrical alloy industry, by Ti3AlC2, ZnO material as reinforcement, be added in noble metal matrix,
Using its excellent performance, the wear-resisting gold of high-strength highly-conductive-ceramics electric contact composite material is prepared.
Although gold-ceramics electrical contact composite material exhibits have gone out preferable conductive, thermally conductive, wear-resisting and mechanical property,
Because of oxide nano rare earth (Sm2O3、Gd2O3) be mutually difficult to disperse, and it is poor with the wetability of auri body, lead to rare-earth oxidation
The problems such as composition granule is easy to reunite in auri body, and interface binding power is weak, and composite material consistency is lower, to make gold-ceramics
The performance of based composites could not be played preferably.Therefore, in conjunction with high-energy stirring ball mill, isostatic cool pressing, vacuum-sintering etc.
Advanced preparation process, it is therefore intended that the high-strength highly-conductive wear-resisting property for playing the ceramic electric contact composite material of gold-enters from preparation process
Hand solves the technical problem in the ceramic electric contact composite material preparation of gold-, to realize the rule of the ceramic electric contact composite material of gold-
Modelling application.
Guiyan Platium Co., Ltd is on the basis of long campaigns noble metal electric contact material is researched and developed, choosing
Select Ti3SiC2、ZnO、Sm2O3、Gd2O3Equal nanometer scale ceramics particle finds adding for hybrid ceramic as self-lubricating phase and hardening constituent
Membership effectively improves the arc resistant ablation ability of Gold Base Electric Contact Materials, improves the resistance fusion welding of material, and material electricity is promoted to connect
Touch the raising of performance.Meanwhile high-energy stirring formula ball grinding technique, also formation nanoscale equiaxed grain structure, ceramics, rare earth oxide
Equal particles, are uniformly distributed on the transgranular and crystal boundary of auri body, improve materials microstructure uniformity, improve the object of material
Reason, mechanics, electricity and electrical contact performance etc., at the same it is smaller to the plasticity and resistivity effects of composite material.
In addition, preparing composite material using addition ceramic mixture, isostatic cool pressing, vacuum-sintering, hot extrusion processing etc. are first
Optimization into processing technology is integrated, and the prepare with scale for the ceramic electric contact composite material of gold-provides new way.
Summary of the invention
Its chemical analysis (weight %) of gold of the invention-ceramics electric contact composite material are as follows:: ceramics (Ti3SiC2) are as follows: 1%
~5%, zinc oxide (ZnO) are as follows: 0.1%~5.0%, rare earth oxide (Sm2O3) are as follows: 0.1%~5.0%, rare earth oxide
(Gd2O3) are as follows: 0.1%~5.0%, surplus is gold.
Gold of the invention-ceramics electric contact composite material the preparation method is as follows:
(1) by the Ti of -100 mesh Au powder and -300 mesh of electrolysis method preparation3AlC2Ceramics, rare earth oxide, oxide powder and zinc
End, material composition by weight percentage are required to match, be put into high-energy stirring formula ball milling tank body, with revolving speed 100r/min-
1000r/min, alternation time are 1min-2min, and ratio of grinding media to material is (3-5): after 1, ball milling 5-20 hours, being obtained uniformly mixed
Gold-ceramic composite powder material.
(2) gold-ceramic composite powder material being uniformly mixed in process (1) is put in vacuum annealing furnace purify and is moved back
Fire processing, to eliminate the hardening phenomenon of ball milling process generation, heat treatment temperature is 100 DEG C -300 DEG C, and the time is that 2-5 is small
When.
(3) gold-ceramic composite powder material obtained in process (2) is packed into the rubber that diameter is Φ 10mm- Φ 30mm
In mould, carries out the static pressure such as people and densifies processing and forming, specifically comprises the processes of: isostatic cool pressing pressure is 100MPa-200MPa, when pressure maintaining
Between 10min-30min, obtain fine and close gold-ceramic composite of the relative density 85% or more.
(4) gold-ceramic composite ingot blank is subjected to vacuum-sintering again, forvacuum degree is < 1 × 10-3Pa, heating rate
10 DEG C/min-20 DEG C/min, sintering temperature be 700 DEG C -900 DEG C, soaking time 1-5 hour, acquisition relative density 99% with
On high-densit gold-ceramic composite.
(5) gold-ceramic composite ingot blank is squeezed as plate, silk material again, extrusion ratio > 30:1, squeezing temperature is 500
℃-800℃。
(6) extrded material is processed using rolling, drawing, heat treatment etc., is prepared into the products such as silk material, plate, profile shapes；
Rolling, drawing deformation amount are 5%-30%, and heat treatment temperature is 500 DEG C -750 DEG C.
Specific embodiment
The specific implementation of gold of the invention-ceramics electric contact composite material is classified as:
(1) Physical and mechanical properties of the ceramic electric contact composite material of gold-are as shown in table 1.
1. gold medal of table-ceramics electric contact composite material performance indicator
(2) gold of the invention-ceramics electric contact composite material carries out electrical contact polishing machine on friction wear testing machine
Experiment, concrete outcome are as shown in table 2.
2. gold medal of table-ceramics electric contact composite material electrical contact performance index
| Embodiment | Title material | Experimental condition | Abrasion loss/mg |
| 1 | Au-0.5Ti3SiC20.5ZnO0.5Sm2O30.5Gd2O3 | Direct current: 24V, 3A；Run 50,000 turns. | 35.64 |
| 2 | Au-1.0Ti3SiC21.0ZnO1.0Sm2O31.0Gd2O3 | Direct current: 24V, 3A；Run 50,000 turns. | 26.15 |
| 3 | Au-2.0Ti3SiC22.0ZnO2.0Sm2O32.0Gd2O3 | Direct current: 24V, 3A；Run 50,000 turns. | 15.71 |
| 4 | Au-3.0Ti3SiC23.0ZnO3.0Sm2O33.0Gd2O3 | Direct current: 24V, 3A；Run 50,000 turns. | 8.22 |
Claims (2)
1. a kind of ceramic electric contact composite material of gold-, it is characterised in that:
The material is with Ti3SiC2Ceramics, rare earth oxide, zinc oxide etc. are reinforced phase, and weight percent content is respectively in 1%-
Between 5% and 0.1%-5.0%, using gold as matrix,
The chemical analysis weight % of material are as follows:: ceramics (Ti3SiC2) are as follows: 1%-5%, zinc oxide (ZnO) are as follows: 0.1%-5.0%,
Rare earth oxide (Sm2O3) are as follows: 0.1%-5.0%, rare earth oxide (Gd2O3) are as follows: 0.1%-5.0%, surplus are gold.
2. a kind of gold described by 1 requirement of right-ceramics novel electrical contact composite material preparation method, it is characterised in that: should
Material is with Ti3SiC2Ceramics, rare earth oxide, zinc oxide etc. are reinforced phase, weight percent content respectively in 1%-5% and
Between 0.1%-5.0%,
Using gold as matrix, the chemical analysis weight % of material are as follows:: ceramics (Ti3SiC2) are as follows: 1%-5%, zinc oxide (ZnO) are as follows:
0.1%-5.0%, rare earth oxide (Sm2O3) are as follows: 0.1%-5.0%, rare earth oxide (Gd2O3) are as follows: 0.1%-5.0%, it is remaining
Amount is gold,
And including following technical process:
(1) by the Ti of -100 mesh Au powder and -300 mesh of electrolysis method preparation3AlC2Ceramics, rare earth oxide, Zinc oxide powder,
Material composition by weight percentage requires to match, and is put into high-energy stirring formula ball milling tank body, with revolving speed 100r/min-
1000r/min, alternation time are 1min-2min, and ratio of grinding media to material 3-5:1 obtains uniformly mixed gold-after ball milling 5-20 hours
Ceramic composite powder material；
(2) gold-ceramic composite powder material being uniformly mixed in process (1) is put in vacuum annealing furnace and is carried out at purification annealing
Reason, to eliminate the hardening phenomenon of ball milling process generation, heat treatment temperature is 100 DEG C -300 DEG C, and the time is 2-5 hours；
(3) gold-ceramic composite powder material obtained in process (2) is fitted into the rubber pattern that diameter is Φ 10mm- Φ 30mm,
It carries out the static pressure such as people and densifies processing and forming, specifically comprises the processes of: isostatic cool pressing pressure is 100MPa-200MPa, dwell time
10min-30min obtains fine and close gold-ceramic composite of the relative density 85% or more；
(4) gold-ceramic composite ingot blank is subjected to vacuum-sintering again, forvacuum degree is < 1 × 10-3Pa, heating rate 10
DEG C/min-20 DEG C/min, sintering temperature is 700 DEG C -900 DEG C, soaking time 1-5 hours, obtains relative density 99% or more
High-densit gold-ceramic composite.
(5) gold-ceramic composite ingot blank is squeezed as plate, silk material again, extrusion ratio > 30:1, squeezing temperature is 500 DEG C -800
℃。
(6) extrded material is processed using rolling, drawing, heat treatment etc., is prepared into the products such as silk material, plate, profile shapes；It rolls
System, drawing deformation amount are 5%-30%, and heat treatment temperature is 500 DEG C -750 DEG C.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN201811365483 | 2018-11-16 | ||
| CN201811365483X | 2018-11-16 |
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| CN110016583A true CN110016583A (en) | 2019-07-16 |
| CN110016583B CN110016583B (en) | 2021-07-09 |
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Citations (9)
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|---|---|---|---|---|
| JP2002029840A (en) * | 2000-07-17 | 2002-01-29 | Toshiba Corp | Zirconia-based ceramic material |
| CN1542149A (en) * | 2003-04-29 | 2004-11-03 | 中国科学院金属研究所 | Long lasting and self-lubricating silver-based electric contact material |
| CN1624838A (en) * | 2004-12-08 | 2005-06-08 | 昆明贵金属研究所 | Silver-tin oxide electrical contact material and preparation method thereof |
| CN101343700A (en) * | 2008-08-25 | 2009-01-14 | 倪树春 | Ag/Ti3SiC2 electric contact material and manufacturing process |
| CN104681312A (en) * | 2013-11-29 | 2015-06-03 | Ls产电株式会社 | Electrical Contact Materials And Method For Preparing The Same |
| CN105385877A (en) * | 2015-11-09 | 2016-03-09 | 昆明贵金属研究所 | Novel silver-based electrical contact composite material and preparing method thereof |
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-
2019
- 2019-02-21 CN CN201910130053.8A patent/CN110016583B/en active Active
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| CN104681312A (en) * | 2013-11-29 | 2015-06-03 | Ls产电株式会社 | Electrical Contact Materials And Method For Preparing The Same |
| US20170042477A1 (en) * | 2015-08-14 | 2017-02-16 | JouZen Oy | Wearable electronic device and method for manufacturing thereof |
| CN105385877A (en) * | 2015-11-09 | 2016-03-09 | 昆明贵金属研究所 | Novel silver-based electrical contact composite material and preparing method thereof |
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Non-Patent Citations (1)
| Title |
|---|
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