CN108531766A - A kind of binary conductive oxide is modified copper-based electric contact material and preparation method thereof - Google Patents
A kind of binary conductive oxide is modified copper-based electric contact material and preparation method thereof Download PDFInfo
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- CN108531766A CN108531766A CN201810421030.8A CN201810421030A CN108531766A CN 108531766 A CN108531766 A CN 108531766A CN 201810421030 A CN201810421030 A CN 201810421030A CN 108531766 A CN108531766 A CN 108531766A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C9/00—Alloys based on copper
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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
- C22C32/001—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 only oxides
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/02—Contacts characterised by the material thereof
- H01H1/021—Composite material
- H01H1/025—Composite material having copper as the basic material
Abstract
A kind of binary conductive oxide is modified copper-based electric contact material and preparation method thereof, and the invention belongs to electrical material fields, and in particular to a kind of binary conductive oxide is modified copper-based electric contact material and preparation method thereof.The problem of the present invention is to solve electric switch break contact poor reliability, short lifes.Binary conductive oxide be modified copper-based electric contact material by mass percentage by binary conductive oxide, lanthanum, zirconium and surplus copper at.Method：Design of material is carried out as the second phase and the principle of basic asphalt mixture using doping vario-property binary conductive oxide, and be co-deposited by liquid phase fabricated in situ and the methods of subsequent heat treatment realizes material preparation, obtain the novel copper-based contact material that arc ablation resistance is high, contact resistance is low and stablizes.The present invention is used for the manufacture for the hard arcs ablation environment device for converting electric energy electrical contact element such as electromagnetic railgun guide rail and high-speed train pantograph slide plate.
Description
Technical field
The invention belongs to electrical material fields, and in particular to a kind of binary conductive oxide be modified copper-based electric contact material and
Preparation method.
Background technology
It is well known that most of Low Voltage Electric Apparatus contact materials are all noble metal, especially silver-base alloy or composite wood
Expect material.Although silver-based material can guarantee the reliably working of good the military service characteristic and electric appliance of electrical contact element, result in dilute
A large amount of consumption of noble metal.
Compared with silver, copper is as contact material the biggest problems are that it is easy to aoxidize, and the oxidation film generated is not led
Electricity.When therefore, using copper as contact material matrix, it is necessary to solve its problem of oxidation during storage and military service.Mesh
Preceding result of study thinks, adds rare earth element (La, Ce, Y etc.) and micro (Zr, Te, In, Hf, Bi, Cd etc.) element alloyed energy
The oxide growth speed of enough effectively control copper.But when low-voltage electrical apparatus is connected with disjunction, the effect of electric arc and Joule heat is still
It can make copper contact surface that fusing and oxidation occur, its contact performance is made to deteriorate.So how to effectively control copper contact working linings
(film layer that surface oxidation and arc erosion are formed) contact performance becomes the critical problem of copper-based electric contact material design.
Based on Electric contact theory and with reference to silver-based electric contact material design principle, the Copper base material used on low-voltage electrical apparatus at present
Material mostly on the basis of basic asphalt mixture, is added by the second phase and constitutes the skeleton of resistance to ablation and ensure its surface layer contact performance.
Relatively it is for Cu-C (graphite, diamond etc., in recent years also it has been proposed that graphene, carbon nanotube etc.) contact of low tension switch early
The contact ducting capacity of copper contact is improved using the high conductivity of graphite, while playing the role of anti-melting welding, makes it have pole
High make-break capacity.But since wetability is poor between graphite and matrix, crackle is easy and fast under Re-power Cyclic Load
Extension, causes initial failure, thus Cu-C (graphite) electrical contact endurance is relatively low.Shao Wen columns et al. are touched in Cu-C (diamond) series
Metal phase (Nb, V, W, Ta, Mo) is added on the basis of head material, mainly utilizes these metals not oxidizable, and its low price aoxidizes
Object has the characteristics that satisfactory electrical conductivity, ensures that material surface working lining has higher conversion stability and anticorrosion properties, makes
Obtained commercial application on some electric appliances.But since wetability is poor between the metal phase and matrix of above-mentioned addition, meeting
Lead to material rapid failure；And surface metal oxide can react to form the insulation production of copper tungstate class with vapor in long service
Object makes contact lose contact conversion function.Also there is researcher to be designed with reference to Ag-MeO contact materials, SnO is added in copper alloy2、
ZnO type oxides and SiC, BN class ceramic phase are as the second phase, but the not report of practical application.In short, this design at present
The contact material that thought is developed can no longer meet contactor class long-life electric appliance and novel low contact high power capacity electricity
The requirement of device.
Invention content
The problem of the present invention is to solve electric switch break contact poor reliability, short lifes.And a kind of binary is provided and is led
Electroxidation object is modified copper-based electric contact material and preparation method thereof.
A kind of binary conductive oxide modification copper-based electric contact material is conductive by 4%~10% binary by mass percentage
Oxide, 0.004%~0.01% lanthanum, 0.1%~0.3% zirconium and surplus copper at.
A kind of above-mentioned binary conductive oxide is modified copper-based electric contact material and specifically carries out according to the following steps：
One, metal A, metal B and copper alloy powder are weighed, the wherein mass ratio of metal A and metal B is 1：(23~24),
The mass ratio of the total amount and copper alloy powder of metal A and metal B is 1：(9~20)；The metal A is aluminium, gallium, antimony or molybdenum, gold
It is zinc or tin to belong to B, and ensures that aluminium or gallium are combined with zinc, and antimony or molybdenum are combined with tin；The copper alloy powder is copper-lanthanum-zircaloy
Powder；
Two, it is 20~25% the clast or powder of metal A and metal B in step 1 to be dissolved in mass percentage respectively
Sulfuric acid in, obtain sulfuric acid A salting liquids and sulfuric acid B salting liquids；After sulfuric acid A salting liquids and sulfuric acid B salting liquids are mixed thereto
Copper alloy powder and distilled water is added, is stirred in the case where temperature is 60~85 DEG C of water bath condition and forms suspension；
Three, the pH value of suspension is adjusted to 7.0~7.4 under agitation using 13~16% sodium carbonate liquors, it is quiet
It sets to obtain sediment；
Four, it is washed using distilled water after filtering sediment, is then dried in vacuo, later in argon gas ceiling
It is calcined under part, is sieved after calcining, obtain the mixed-powder of binary conductive oxide and copper powder；The binary conductive oxide
With the mixed-powder of copper powder by mass percentage by 4%~10% binary conductive oxide, 0.004%~0.01% lanthanum,
0.1%~0.3% zirconium and the copper composition of surplus；
Five, it will be sintered after the mixed-powder cold moudling of the binary conductive oxide and copper powder that are obtained in step 4,
It is squeezed or is rolled again and be modified copper-based electric contact material to get to binary conductive oxide.
The binary conductive oxide of the present invention is modified copper-based electric contact material and is used for electromagnetic railgun guide rail and bullet train
The manufacture of the hard arcs ablation environment device for converting electric energy electrical contact element such as pantograph pan.
Beneficial effects of the present invention：
1, the present invention carries out material using doping vario-property binary conductive oxide as the second phase and the principle of basic asphalt mixture
Material design, and be co-deposited by liquid phase fabricated in situ and the methods of subsequent heat treatment realizes material preparation, obtain arc ablation resistance
Property it is high, contact resistance is low and the novel copper-based contact material stablized.
2, the present invention improves the arc ablation resistance of material using binary conductive oxide as the second phase.Add two
First conductive oxide is with ZnO and SnO2Based on, it is adulterated by liquid phase co-deposition and subsequent heat treatment realization and compound, copper-based
The highly conductive micro-nano disperse phase of doping binary oxide is formed in body；Utilize the contact members performance indicator prepared by the present invention
It is as follows：Density is 8.4-8.75g/cm3；Hardness is HB65-95；Resistivity is 2.1-2.6 μ Ω .cm.
Specific implementation mode
Specific implementation mode one：A kind of binary conductive oxide of present embodiment is modified copper-based electric contact material and presses quality hundred
Point than by 4%~10% binary conductive oxide, 0.004%~0.01% lanthanum, 0.1%~0.3% zirconium and surplus
Copper at.
Present embodiment doping vario-property binary conductive oxide, which can play, improves material conductive capability, from arc extinguishing energy
Power and multiple effect with matrix wetability.
1, contact resistance is low and stablizes.Studies have shown that ZnO, SnO2Equal oxides are very poor in the electric conductivity of pure state, by mixing
After miscellaneous, electric conductivity can greatly improve, and resistivity can be increased to 10-4The magnitude of Ω cm, so as in contact surface and work
Make to play the role of contact conducting in layer.Due to the second good electric conductivity of phase constituent element, in the case of its content is higher
The electric conductivity of material will not be reduced, contact resistance will not be improved.Simultaneously as doping vario-property binary conductive oxide will not with it is big
Further reaction occurs for gas surrounding medium, so as to be kept in contact the stabilization of state.
2, it is improved from arc extinguishing ability.SnO2, the pure state oxide stability such as ZnO it is very high (fusing point is 2000K or more),
It is not easy to gasify under the action of Joule heat and electric arc during military service and volatilize.And it is doped after binary oxide (such as
SnO2·MoO3) 1494K saturated vapor pressure up to 10-3Atm., and (SnO) is generatedn·MoO3 +Complex ion structures,
Generation and further decompose under arcing can all absorb energy, make arc cathode spot carrying in contact surface movement speed
Height, and shorten the arc time, to play the role of, from arc extinguishing, reducing electrical wear.
3, the improvement of interfacial wettability.For Ag-MeO contact materials studies have shown that by adding Bi2O3、TeO2、
WO3、MoO3The use of equal additives significantly improves Ag-SnO2Contact performance, so that it has been applied a new step.
Action principle about additive it is not immediately clear that Didiere Jnnaot etc. are considered under the high temperature conditions, additive with
Second phase reacts, and generates such as Bi2Sn2O7、Ag2MoO4、AgSbO3Wetability is improved etc. new object phase.Binary oxygen
Compound, which adulterates generated object, mutually also has above-mentioned characteristic, thus can reach and the preferable wetting effect of matrix.
The wetability of addition phase and matrix is improved using Copper substrate alloying mode and improves matrix oxidation resistance.In copper
Middle solid solution (0.2~0.7) wt.% alloy elements (Te, Bi, Zr, Cr etc.) can be such that its intensity is improved than annealing T2 fine copper intensity
200~240%, resistivity rises 15~20%；Compound addition (0.001~0.005) wt.%La again, can make alloy in air
80~120 DEG C of range internal oxidition rates decline 30~60% under environment；Meanwhile with the variation of constituent content, copper alloy and two
First conductive oxide ceramic (SnO2, ZnO etc.) can be adjusted within the scope of 25~110 ° in the angle of wetting of 1500K.
Present embodiment does not have the military service performance of composite material when binary conductive oxide additive amount is less than 4%
Larger contribution；And when the content for adding constituent element is higher than 10%, the drastically deterioration of contact performance will be caused.With existing Cu-1wtCp
Material is compared, and the addition of binary conductive oxide can reduce the contact resistance of contact material, and the resistance to electric arc for effectively improving material is burnt
Corrosion and resistance fusion welding, strengthened copper alloy matrix can also make the intensity of material keep lasting.
Specific implementation mode two：The present embodiment is different from the first embodiment in that：The binary conductive oxide
For one in alumina doped zinc oxide, oxidation Ga-doped zinc oxide, oxidation antimony-doped tin oxide or molybdenum oxide doped stannum oxide
Kind.It is other same as the specific embodiment one.
Specific implementation mode three：The present embodiment is different from the first and the second embodiment in that：Binary conductive oxide
To adulterate the zinc oxide of 4~5wt% aluminium oxide.It is other the same as one or two specific embodiments.
Specific implementation mode four：Unlike one of present embodiment and specific implementation mode one to three：Binary conduction oxygen
Compound is to adulterate the zinc oxide of 4~5wt% gallium oxides.It is other identical as specific implementation mode one to three.
Specific implementation mode five：Unlike one of present embodiment and specific implementation mode one to four：Binary conduction oxygen
Compound is to adulterate the tin oxide of 4~5wt% antimony oxides.It is other identical as specific implementation mode one to four.
Specific implementation mode six：Unlike one of present embodiment and specific implementation mode one to five：Binary conduction oxygen
Compound is to adulterate the tin oxide of 4~5wt% molybdenum oxides.It is other identical as specific implementation mode one to five.
Specific implementation mode seven：A kind of binary conductive oxide of present embodiment be modified copper-based electric contact material specifically by with
Lower step carries out：
One, metal A, metal B and copper alloy powder are weighed, the wherein mass ratio of metal A and metal B is 1：(23~24),
The mass ratio of the total amount and copper alloy powder of metal A and metal B is 1：(9~20)；The metal A is aluminium, gallium, antimony or molybdenum, gold
It is zinc or tin to belong to B, and ensures that aluminium or gallium are combined with zinc, and antimony or molybdenum are combined with tin；The copper alloy powder is copper-lanthanum-zircaloy
Powder；
Two, it is 20~25% the clast or powder of metal A and metal B in step 1 to be dissolved in mass percentage respectively
Sulfuric acid in, obtain sulfuric acid A salting liquids and sulfuric acid B salting liquids；After sulfuric acid A salting liquids and sulfuric acid B salting liquids are mixed thereto
Copper alloy powder and distilled water is added, is stirred in the case where temperature is 60~85 DEG C of water bath condition and forms suspension；
Three, the pH value of suspension is adjusted to 7.0~7.4 under agitation using 13~16% sodium carbonate liquors, it is quiet
It sets to obtain sediment；
Four, it is washed using distilled water after filtering sediment, is then dried in vacuo, later in argon gas ceiling
It is calcined under part, is sieved after calcining, obtain the mixed-powder of binary conductive oxide and copper powder；The binary conductive oxide
With the mixed-powder of copper powder by mass percentage by 4%~10% binary conductive oxide, 0.004%~0.01% lanthanum,
0.1%~0.3% zirconium and the copper composition of surplus；
Five, it will be sintered after the mixed-powder cold moudling of the binary conductive oxide and copper powder that are obtained in step 4,
It is squeezed or is rolled again and be modified copper-based electric contact material to get to binary conductive oxide.
Present embodiment realizes the micro-nano addition phase microstructure of doping vario-property binary and disperse using fabricated in situ mode
The regulation and control of property.Micro-nano second phase there is strong reunion to be inclined to reduce its surface energy, therefore using conventional powder mixing
Technique is difficult to prepare the contact material containing micro-nano binary conductive oxide.The micro-nano AgSnO reported at present2Preparation side
Method mainly has：High-energy ball milling and reaction ball milling method, electroless plating method, internal oxidation and chemical coprecipitation area method etc..In view of copper alloy
Physicochemical characteristics, the above method are difficult practical application.Meanwhile as previously mentioned, the surface microstructure of solid phase to its wetability
There are vital influence, the above method to be difficult to realize the regulation and control of the second phase surface microstructure.Present embodiment is using former
Position synthetic method realizes evenly dispersed and microstructure control of the binary conductive oxide in copper alloy matrix, that is, uses chemistry
The mode of co-deposition prepares the mixture of binary conductive oxide precursor and copper alloy powder, is then mixed by calcining
Powder.Further in such a way that powder compacting and deformation processing are combined, the control of contact material microstructure is realized.
The process that copper alloy powder and distilled water are added in step 2 is slowly to be gradually added.
Specific implementation mode eight：Present embodiment is unlike specific implementation mode seven：Binary described in step 4 is led
Electroxidation object is alumina doped zinc oxide, oxidation Ga-doped zinc oxide, oxidation antimony-doped tin oxide or oxidation molybdenum doping oxidation
One kind in tin.It is other identical as specific implementation mode seven.
Specific implementation mode nine：Present embodiment is unlike specific implementation mode seven or eight：It is forged described in step 4
The temperature of burning is 800~850 DEG C, and calcination time is 2~4h.It is other identical as specific implementation mode seven or eight.
Specific implementation mode ten：Unlike one of present embodiment and specific implementation mode seven to nine：Institute in step 5
The temperature for stating sintering is 900~950 DEG C, and sintering time is 2~4h.It is other identical as specific implementation mode seven to nine.
Pass through the effect of the following tests verification present invention：
Embodiment one：A kind of binary conductive oxide is modified copper-based electric contact material and specifically carries out according to the following steps：
One, 0.13g aluminium powders and 3.81g zinc powders and 95g copper-lanthanum-zirconium alloy powder are weighed；
Two, by step 1 0.13g aluminium powders and 3.81g zinc powders be dissolved in respectively mass percentage be 20% sulfuric acid
In, obtain aluminum sulfate solution and solution of zinc sulfate；Copper alloy is added thereto after aluminum sulfate solution and solution of zinc sulfate are mixed
Powder and distilled water stir in the case where temperature is 60 DEG C of water bath condition and form suspension；
Three, the pH value of suspension is adjusted to 7.0~7.4 under agitation using 15% sodium carbonate liquor, stood
To sediment；
Four, it is washed using distilled water after filtering sediment, is then dried in vacuo, later in 850 DEG C of argon gas
It is calcined under protective condition, calcines 4h, be sieved after calcining, obtain the mixed-powder of binary conductive oxide and copper powder；
Five, it will be sintered after the mixed-powder cold moudling of the binary conductive oxide and copper powder that are obtained in step 4,
It is squeezed or is rolled again and be modified copper-based electric contact material exemplar to get to 5% conductive zinc oxide (doped aluminium).
Embodiment two：According to the preparation process of embodiment one, select raw material for 0.26g aluminium powders, 7.62g zinc powders and 90g
Copper-lanthanum-zirconium alloy powder, sediment are being protected after calcining mixed-powder cold moudling in 4 hours under 850 DEG C of argon gas protective conditions
It is sintered 4 hours under the conditions of 930 DEG C in atmosphere sintering furnace, sintered blank progress extrusion process (is mixed to get to 10% conductive zinc oxide
Miscellaneous aluminium oxide) it is modified copper-based electric contact material exemplar.
Embodiment three：According to the preparation process of embodiment one, select raw material for 0.19g galliums powder, 3.81g zinc powders and 95g
Copper-lanthanum-zirconium alloy powder, sediment are being protected after calcining mixed-powder cold moudling in 4 hours under 820 DEG C of argon gas protective conditions
It is sintered 4 hours under the conditions of 930 DEG C in atmosphere sintering furnace, sintered blank progress extrusion process (is mixed to get to 5% conductive zinc oxide
Miscellaneous gallium oxide) it is modified copper-based electric contact material exemplar.
Example IV：According to the preparation process of embodiment one, select raw material for 0.38g galliums powder, 7.62g zinc powders and 90g
Copper-lanthanum-zirconium alloy powder, sediment are being protected after calcining mixed-powder cold moudling in 4 hours under 820 DEG C of argon gas protective conditions
It is sintered 4 hours under the conditions of 930 DEG C in atmosphere sintering furnace, sintered blank progress extrusion process (is mixed to get to 10% conductive zinc oxide
Miscellaneous gallium oxide) it is modified copper-based electric contact material exemplar.
Embodiment five：According to the preparation process of embodiment one, select raw material for 0.21g antimony powders, 3.74g glass puttys and 95g
Copper-lanthanum-zirconium alloy powder, sediment are being protected after calcining mixed-powder cold moudling in 4 hours under 820 DEG C of argon gas protective conditions
It is sintered 4 hours under the conditions of 940 DEG C in atmosphere sintering furnace, sintered blank progress extrusion process (is mixed to get to 5% conductive tin oxide
Miscellaneous antimony oxide) it is modified copper-based electric contact material exemplar.
Embodiment six：According to the preparation process of embodiment one, select raw material for 0.42g antimony powders, 7.48g glass puttys and 90g
Copper-lanthanum-zirconium alloy powder, sediment are being protected after calcining mixed-powder cold moudling in 4 hours under 820 DEG C of argon gas protective conditions
It is sintered 4 hours under the conditions of 940 DEG C in atmosphere sintering furnace, sintered blank progress extrusion process (is mixed to get to 10% conductive tin oxide
Miscellaneous antimony oxide) it is modified copper-based electric contact material exemplar.
Embodiment seven：According to the preparation process of embodiment one, select raw material for 0.17g molybdenum powders, 3.74g glass puttys and 95g
Copper-lanthanum-zirconium alloy powder, sediment are being protected after calcining mixed-powder cold moudling in 4 hours under 800 DEG C of argon gas protective conditions
It is sintered 4 hours under the conditions of 940 DEG C in atmosphere sintering furnace, sintered blank progress extrusion process (is mixed to get to 5% conductive tin oxide
Miscellaneous molybdenum oxide) it is modified copper-based electric contact material exemplar.
Embodiment eight：According to the preparation process of embodiment one, select raw material for 0.34g molybdenum powders, 7.48g glass puttys and 90g
Copper-lanthanum-zirconium alloy powder, sediment are being protected after calcining mixed-powder cold moudling in 4 hours under 800 DEG C of argon gas protective conditions
It is sintered 4 hours under the conditions of 940 DEG C in atmosphere sintering furnace, sintered blank progress extrusion process (is mixed to get to 10% conductive tin oxide
Miscellaneous molybdenum oxide) it is modified copper-based electric contact material exemplar.
It is as follows using the contact members performance indicator prepared by the present invention：Density is 8.4~8.75g/cm3；Hardness is
HB65~95；Resistivity is 2.1~2.6 μ Ω .cm；
The contact standard specimen of the contact members and standard prepared as stated above carries out contrast experiment on special test rack,
Test AC conditions under electrical wear stability, there is the contact drop of contact surface when working lining.Detailed data be listed in table 1 it
In (comparative sample is indicated with X).Experimental condition is：I=30A, U=380V,ON OFF circulation number is 10000 times.Electricity
Pressure drop is the average value of 30 tests.Electrical wear amount is average value of the contact to upper wear extent.
No. 14 contact members and the ablation resistance and substance transfer amount under comparison exemplar DC condition in be classified as table 1 in table 2.
Experimental condition is：I=100A, U=380V, ON OFF circulation number are 10000 times, and (+) indicates that quality increases, and (-) indicates quality
It reduces.As can be seen from the table, contact material proposed by the invention has higher arc ablation resistance, working face contact drop
(i.e. contact resistance) is relatively low, and the isoelectric substance transfer amount under DC condition is extremely low.
1 embodiment of table
2 material of the present invention of table and the substance transfer amount under comparison exemplar DC condition
Arc ablation resistance comparative test result is consistent with the above results under AC4 dutys.It connects identical with disjunction parameter：
Breaking current 150A；Disjunction voltage 380V；Power factor 0.35；1200 time/hour of operating frequency.Index of aging 20000 times.Examination
Test the result shows that, be only capable of reaching the 50-63% of required value with the standard specimen part life value compared, and sample provided by the present invention
Part can reach the required value of index of aging.Compared with comparative sample, electric switch can be improved in contact material provided by the present invention
Reliability and service life.
Claims (10)
1. a kind of binary conductive oxide is modified copper-based electric contact material, it is characterised in that a kind of binary conductive oxide Modified Cu
Base electrical contact material is by mass percentage by 4%~10% binary conductive oxide, 0.004%~0.01% lanthanum, 0.1%
~0.3% zirconium and the copper of surplus at.
2. a kind of binary conductive oxide according to claim 1 is modified copper-based electric contact material, it is characterised in that described
Binary conductive oxide is that alumina doped zinc oxide, oxidation Ga-doped zinc oxide, oxidation antimony-doped tin oxide or molybdenum oxide are mixed
One kind in miscellaneous tin oxide.
3. a kind of binary conductive oxide according to claim 2 is modified copper-based electric contact material, it is characterised in that binary
Conductive oxide is the zinc oxide for adulterating 4~5wt% aluminium oxide.
4. a kind of binary conductive oxide according to claim 2 is modified copper-based electric contact material, it is characterised in that binary
Conductive oxide is the zinc oxide for adulterating 4~5wt% gallium oxides.
5. a kind of binary conductive oxide according to claim 2 is modified copper-based electric contact material, it is characterised in that binary
Conductive oxide is the tin oxide for adulterating 4~5wt% antimony oxides.
6. a kind of binary conductive oxide according to claim 2 is modified copper-based electric contact material, it is characterised in that binary
Conductive oxide is the tin oxide for adulterating 4~5wt% molybdenum oxides.
7. a kind of binary conductive oxide as described in claim 1 is modified the preparation method of copper-based electric contact material, feature
It is that binary conductive oxide is modified copper-based electric contact material and specifically carries out according to the following steps：
One, metal A, metal B and copper alloy powder are weighed, the wherein mass ratio of metal A and metal B is 1：(23~24), metal A
It is 1 with the total amount of metal B and the mass ratio of copper alloy powder：(9~20)；The metal A is aluminium, gallium, antimony or molybdenum, and metal B is
Zinc or tin, and ensure that aluminium or gallium are combined with zinc, antimony or molybdenum are combined with tin；The copper alloy powder is copper-lanthanum-zirconium alloy powder；
Two, the clast or powder of metal A and metal B in step 1 are dissolved in the sulphur that mass percentage is 20~25% respectively
In acid, sulfuric acid A salting liquids and sulfuric acid B salting liquids are obtained；It is added thereto after sulfuric acid A salting liquids and sulfuric acid B salting liquids are mixed
Copper alloy powder and distilled water stir in the case where temperature is 60~85 DEG C of water bath condition and form suspension；
Three, the pH value of suspension is adjusted to 7.0~7.4 under agitation using 13~16% sodium carbonate liquors, stood
To sediment；
Four, it is washed using distilled water after filtering sediment, is then dried in vacuo, later under argon gas protective condition
It is calcined, is sieved after calcining, obtain the mixed-powder of binary conductive oxide and copper powder；The binary conductive oxide and copper
The mixed-powder of powder is by mass percentage by 4%~10% binary conductive oxide, 0.004%~0.01% lanthanum, 0.1%
~0.3% zirconium and the copper composition of surplus；
Five, it will be sintered after the mixed-powder cold moudling of the binary conductive oxide and copper powder that are obtained in step 4, then into
Row is squeezed or rolled is modified copper-based electric contact material to get to binary conductive oxide.
8. a kind of binary conductive oxide according to claim 7 is modified copper-based electric contact material, it is characterised in that step
Binary conductive oxide described in four be alumina doped zinc oxide, oxidation Ga-doped zinc oxide, oxidation antimony-doped tin oxide or
One kind in molybdenum oxide doped stannum oxide.
9. a kind of binary conductive oxide according to claim 7 is modified copper-based electric contact material, it is characterised in that step
The temperature calcined described in four is 800~850 DEG C, and calcination time is 2~4h.
10. a kind of binary conductive oxide according to claim 7 is modified copper-based electric contact material, it is characterised in that step
The temperature being sintered described in five is 900~950 DEG C, and sintering time is 2~4h.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110747366A (en) * | 2019-11-21 | 2020-02-04 | 谷文伟 | Composite nano oxide modified copper-zirconium alloy electrical contact material and preparation method thereof |
| CN110791672A (en) * | 2019-11-21 | 2020-02-14 | 谷文伟 | Preparation method of cadmium molybdate modified copper-based composite electrical contact material |
| CN116504550B (en) * | 2023-05-26 | 2023-10-24 | 江苏爱斯凯电气有限公司 | Electric contact material and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102912208A (en) * | 2012-11-08 | 2013-02-06 | 哈尔滨工业大学 | Preparation method for nano oxide modified copper-based electric contact material |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102912208A (en) * | 2012-11-08 | 2013-02-06 | 哈尔滨工业大学 | Preparation method for nano oxide modified copper-based electric contact material |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110747366A (en) * | 2019-11-21 | 2020-02-04 | 谷文伟 | Composite nano oxide modified copper-zirconium alloy electrical contact material and preparation method thereof |
| CN110791672A (en) * | 2019-11-21 | 2020-02-14 | 谷文伟 | Preparation method of cadmium molybdate modified copper-based composite electrical contact material |
| CN116504550B (en) * | 2023-05-26 | 2023-10-24 | 江苏爱斯凯电气有限公司 | Electric contact material and preparation method thereof |
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