CN110423908A - One kind can quickly aoxidize silver-tin oxide or indium oxide contact material and preparation method - Google Patents
One kind can quickly aoxidize silver-tin oxide or indium oxide contact material and preparation method Download PDFInfo
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- CN110423908A CN110423908A CN201910786745.8A CN201910786745A CN110423908A CN 110423908 A CN110423908 A CN 110423908A CN 201910786745 A CN201910786745 A CN 201910786745A CN 110423908 A CN110423908 A CN 110423908A
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- tin oxide
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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
- B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
- B22F7/02—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite layers
- B22F7/04—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite layers with one or more layers not made from powder, e.g. made from solid metal
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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
- C22C1/0466—Alloys based on noble metals
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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
- C22C1/10—Alloys containing non-metals
- C22C1/1078—Alloys containing non-metals by internal oxidation of material in solid state
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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
- H01H1/023—Composite material having a noble metal as the basic material
- H01H1/0237—Composite material having a noble metal as the basic material and containing oxides
- H01H1/02372—Composite material having a noble metal as the basic material and containing oxides containing as major components one or more oxides of the following elements only: Cd, Sn, Zn, In, Bi, Sb or Te
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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
- H01H1/04—Co-operating contacts of different material
Abstract
The present invention, which discloses one kind, can quickly aoxidize silver-tin oxide or indium oxide contact material and preparation method, comprising: S1 prepares AgSnIn or AgSnInX spindle using powder isostatic pressed method；Plate is made after being sintered spindle in S2；S3, plate and silver plate progress is compound, obtain compound rear plate；S4, will it is compound after plate be heat-treated, cold rolling, then punching is at material strip；Material strip is carried out internal oxidition by S5, and acquisition can quickly aoxidize silver-tin oxide or indium oxide contact material, and institutional framework is relatively uniform, and tissue particles size is almost the same after oxidation, AgSnO after oxidation2‑In2O3Expansion hardly expands, and product appearance is relatively flat, and welding surface is straight, and welding performance is preferable；And oxidation rate improves 30% or more than traditional Internal oxidation rate.
Description
Technical field
The present invention relates to a kind of preparation methods of electrical contact material, specifically, what is involved is one kind can quickly aoxidize height
Performance silver-tin oxide or indium oxide AgSnO2-In2O3Contact material and preparation method thereof.
Background technique
Contact material and its component are widely used in the automation control circuits such as automobile, communication, household electrical appliances, lathe,
It plays critical effect to the automatic adjustment, conversion and safeguard protection of circuit.Contact is as in electrical contact component
Key components, directly take on the on-off of load current in circuit, performance determine the reliability of electrical contact component with
Service life.Internal oxidation prepares silver-tin oxide or indium oxide (AgSnO2-In2O3) material is due to its preferable electric life, excellent resistance to electric arc
Aggressivity, wear resistance and resistance fusion welding are widely used in each electric appliances.
In recent years domestic and international correlative study and report.Such as: 1) a kind of Chinese invention patent: high-oxide content blade contact material
The preparation method of material, publication number: CN104404419A is made by preparing internal oxidation process and high temperature diffusion annealing in conjunction with tradition
The standby tin-oxygen-silver electric contact material for providing the features such as oxide content is high, silver-colored interface bond strength is high again.2) Wang Song etc., system
Standby technique is to AgSnO2(8)-In2O3(4) influence of contact material microstructure and property, " rare metal and hard alloy "
Vol.43,NO.2,Apr.2015；Powder metallurgic method, alloy powder preoxidation and pressurization internal oxidition legal system is respectively adopted in introduction
Standby AgSnO2(8)-In2O3(4) contact material studies Different Preparation to AgSnO2In2O3Contact material microstructure
With the influence of performance.Patent 1) it introduces and improves siller tin oxide (high oxidation content) and silver-colored interface bond strength method and technique, it may be assumed that
Melting, extruding, multiple silver-colored hot rolling, cold rolling, punching, high temperature diffusion annealing processing, internal oxidition processing and postprocessing working procedures, but the party
Method prepares silver-tin oxide or indium oxide, and the internal oxidition period is longer, and especially for thicker product, production efficiency is lower；The party simultaneously
Method preparation internal oxidation organization's structure is coarseer, and organization internal is easy to produce crackle.Document 2) highlight powder metallurgic method Ag
Powder, SnO2Powder, In2O3Powder low energy ball milling, isostatic cool pressing, sintering squeeze；Alloy powder preoxidation Ag-Sn-In powder by atomization,
Oxidation, waits static pressure, is sintered, squeeze etc., and traditional internal oxidition combination high pressure Ag-Sn-In alloy vacuum melting furnace, casting, pulling plate,
Pressure oxidation etc..Two kinds of front dominant powder metallurgical technology, latter are also traditional internal oxidation process, only internal oxidition pressure
Power increases；But parameter influences oxidation rate during internal oxidition, increases oxygen pressure and promotes influence very little to oxidation rate,
High pressure needs special special equipment simultaneously, is generally difficult to produce in enormous quantities；The technique prepares silver-tin oxide or indium oxide tissue
Structure and patent 1) there are same problems.In addition, traditional internal oxidation, due to generating AgSnO after AgSnIn oxidation2-In2O3, make
Obtain working face AgSnO2-In2O3Volume expands, and the face constancy of volume of weld interface silver, leads to final products, and appearance is uneven
It is whole, there is welding surface indent, seriously affects rear road welding quality.
Summary of the invention
In view of the deficiency of the prior art and defect, the present invention, which provides one kind, can quickly aoxidize high-performance
AgSnO2-In2O3Contact material and preparation method thereof.
In order to achieve the above object, the technical solution adopted by the present invention is that:
According to the first aspect of the invention, a kind of preparation that can quickly aoxidize silver-tin oxide or indium oxide contact material is provided
Method, comprising:
S1 prepares AgSnIn or AgSnInX spindle using powder isostatic pressed method, and wherein X is that all can be with Ag, Sn shape
At alloy and it can be improved its electrical property element；
AgSnIn or AgSnInX plate is made after being sintered AgSnIn the or AgSnInX spindle in S2；
S3, AgSnIn the or AgSnInX plate and silver plate progress is compound, obtain compound rear plate；
The compound rear plate is heat-treated, cold rolling by S4, then punching is at sheet material；
The sheet material is carried out internal oxidition by S5, and acquisition can quickly aoxidize silver-tin oxide or indium oxide contact material.
It is optionally, described that AgSnIn or AgSnInX spindle is prepared using powder isostatic pressed method in S1, comprising:
Ag ingot, Sn ingot, In ingot are subjected to melting, or Ag ingot, Sn ingot, In ingot and X element are subjected to melting, it is molten to obtain alloy
Liquid；
The alloy solution is subjected to powder by atomization, obtains AgSnIn or AgSnInX powder；
AgSnIn the or AgSnInX powder is sieved and is waited static pressure, AgSnIn or AgSnInX ingot is prepared
Son.
Optionally, the melting, in which: Ag content is that 83.5%~93.5%, Sn content is 4.5~12%, In content
It is 1.5~4%, wherein X total content≤1.0%.
Optionally, described to be sieved and wait static pressure, in which: to cross between 100 mesh of grit number~600 mesh, hydrostatic pressure is
Between 70Mpa~200Mpa.
Optionally, in S2, the sintering, in which: temperature is between 650 DEG C -820 DEG C, H2Or hydrogen-nitrogen mixture gas protection.
Optionally, it in S2, after AgSnIn the or AgSnInX spindle is sintered, is made of extrusion process
AgSnIn or AgSnInX plate.
Optionally, AgSnIn the or AgSnInX plate and silver plate progress is compound, in which: hot composite deformation amount in S3
Between 40%~70%, temperature controls the N between 500 degree~750 degree2Or Ar protection.
Optionally, in S4, the compound rear plate is heat-treated, in which: temperature is led between 450 degree~750 degree
N2Or nitrogen hydrogen mixeding gas protection.
According to the second aspect of the invention, provide it is a kind of by the above method preparation can quickly aoxidize silver-tin oxide or indium oxide
Contact material.
The internal oxidition of the technology path of the above method of the present invention and previous traditional material prepares AgSnO2-In2O3Method have
It is dramatically different:
The technology path that the present invention uses is: preparing AgSnInX spindle by powder isostatic pressed method first (can be first right
AgSnInX carries out melting, powder by atomization, then obtained powder is carried out to wait static pressure at spindle), then be sintered and squeeze, so
Punching and internal oxidition are carried out afterwards.
And traditional internal oxidation are as follows: compound (the multiple silver) → rolling → punching of AgSnIn melting → ingot casting → surface processing → heat
→ internal oxidition etc..
It is well known that melting is cast into spindle, alloy structure compactness is higher, during internal oxidition oxygen diffusion admittance compared with
It is few, cause oxidation rate slower；Due to conventionally employed melting casting method, organization internal crystallite dimension can not accomplish after internal oxidition
It is uniform and stable.Mid-early stage preparation AgSnIn or AgSnInX spindle of the invention using being powder isostatic pressed method, only have by compactness
Melting is cast spindle about 90%, and there are a large amount of ultrafine micropores between powder granule, are partially arranged by squeezing these ultrafine micropores
It removes, forms similar a large amount of " lines of demarcation " and " crystal boundary " between particle and particle, be during subsequent internal oxidition, oxygen diffusion provides
More " channel ", as " short circuit oxidation ".Meanwhile subsequent compound and cold rolling process is further such that die break, forms more
More " crystal boundaries "；Metal (Sn, In, X) evolves into metal oxide MeO after oxidation, and volume further expands, and enriches between particle
Line of demarcation.It further, is by particular screen, therefore through peroxide due to being atomized powder granule in AgSnIn or AgSnInX
Organize " crystal grain " size than more uniform after change, and oxygen method prepares AgSnO in tradition2-In2O3Oxide particle is prepared to be difficult to control
It is uniform and stable.Simultaneously as a large amount of " crystal boundaries " exists, it is more that oxygen spreads " channel ", so aoxidizing according to common oxidation technology
Speed also quickly, can be improved 30% or more relative to traditional Internal oxidation rate.
The above method of the present invention dexterously devises entire method using the inherent changes in microstructure principle between material
Technology path, no matter simple process, it is easy to operate, it is low in cost, to equipment without particular/special requirement, the contact material of preparation,
Uniform texture, fine and smooth, electric life is higher, can be widely applied to low-voltage electrical apparatus, and temperature rise is lower.It can realize simultaneously quickly
Oxidation, production efficiency is higher, shortens 30% or more compared to traditional internal oxidition time.
Above method preparation of the present invention can quickly aoxidize high-performance AgSnO2-In2O3Contact material, institutional framework
Relatively uniform, tissue particles size is almost the same after oxidation, working face AgSnO after oxidation2-In2O3Volume hardly expands, and produces
Product appearance is relatively flat, and welding surface is straight, and welding performance is preferable.
Detailed description of the invention
Fig. 1 is conventional internal oxidition AgSnO2(9)-In2O3(4) metallographic structure；
Fig. 2 is the AgSnO of preparation of the embodiment of the present invention2(9)-In2O3(4) metallographic structure.
Specific embodiment
Further description of the technical solution of the present invention below, and the following description is only to understand technical solution of the present invention
It is used, is not used in and limits the scope of the invention, protection scope of the present invention is subject to claims.
One kind of preparation of the embodiment of the present invention can quickly aoxidize high-performance AgSnO2-In2O3Contact material, tissue point
Cloth is uniform, and tissue particles size is almost the same after oxidation, AgSnO after oxidation2-In2O3It hardly expands, product appearance is relatively more flat
Whole, welding surface is straight, and welding performance is preferable；And oxidation rate improves 30% or more than traditional Internal oxidation rate.
In the present invention, the melting of design, powder by atomization, be sieved and wait static pressure, sintering, extruding, compound, heat treatment, cold rolling,
Punching, internal oxidition and cleaning and etc., the parameter of concrete technology operation is alternatively, such as preferred in part of the present invention
In embodiment:
Ag ingot, Sn ingot, In ingot are carried out melting, or Ag ingot, Sn ingot, In ingot and X element are carried out melting by the first step, are obtained
To alloy molten solution.Wherein parameter can use: Ag content is that 4.5~12%, In content is for 83.5%~93.5%, Sn content
1.5~4%, further, it may include X, X total content≤1.0%.X is that all can form alloy with Ag, Sn and can mention
Its high electrical property element, such as X can be one of Zn, Bi, Cu, Ni and rare earth element or multiple combinations.
Alloy molten solution after first step melting is atomized by second step.Wherein parameter can use: atomization pressure
Between 1.0Mpa~10Mpa.
Powder after atomization is sieved and is waited static pressure by third step.Wherein parameter can use: mistake 100 mesh of grit number~
Between 600 mesh, between hydrostatic pressure 70Mpa~200Mpa, the dwell time be can be between 30s~120s.
The spindle of acquisition is sintered by the 4th step, and wherein parameter can use: temperature is between 650 DEG C~820 DEG C；
H2Or hydrogen-nitrogen mixture gas protection, time can be 2 hours~7 hours.
5th step, by after sintering spindle carry out hot extrusion, wherein parameter can use: temperature 600 DEG C~720 DEG C it
Between, charcoal or hydrogen-nitrogen mixture gas protection, the time can be 2 hours~4 hours.Wherein extrusion plate thickness and width is according to most
Finished product requires AgSnIn or AgSnInX slice width degree and thickness proportion to calculate acquisition.
6th step, plate and silver plate progress is compound.Wherein parameter can use: hot composite deformation amount is 40%~70%
Between, temperature controls between 500 degree~750 degree, and N2 or Ar protection, material strip thickness and width is according to final products requirement
AgSnIn or AgSnInX layers and Ag width and thickness ratio calculating layer by layer obtains.
It is of course also possible to which plate is cleaned with water, compound, promotion composite effect is then carried out with silver plate again.
Material strip after compound is heat-treated by the 7th step, and wherein parameter can use: temperature 450 degree~750 degree it
Between, lead to N2Or nitrogen hydrogen mixeding gas protection, time can be 6~12 hours.
Material strip after heat treatment is carried out cold rolling and punching again by the 8th step.Wherein parameter can use: the deformation of cold rolling single track
Amount control is between 5%~20%.
Sheet material after punching is carried out internal oxidition by the 9th step, and obtaining crystal grain exquisiteness uniformly can quickly aoxidize high-performance AgSnO2-
In2O3Contact material.Wherein parameter can use: between 580 degree~700 degree of oxidizing temperature；Oxygen it is voltage-controlled system 0.8Mpa~
Between 5Mpa；Oxidization time combines oxidation technology parameter to calculate and obtains according to punching sheet thickness.
The detailed technical operation of the present invention is illustrated below by way of the embodiment of concrete application.
Embodiment one
To prepare Ag (92) SnO2-In2O3For electrical contact material
The first step, by Ag ingot, Sn ingot, In ingot, additive Ni carry out melting and ingot casting.Wherein Ag content is 93.5wt%,
Sn content is 4.7wt%, and In content is 2.5wt%, and Ni content is 0.3wt%.
Alloy molten solution after first step melting is atomized, atomization pressure 1.0Mpa by second step.
Powder after atomization is sieved and is waited static pressure by third step, crosses 600 mesh of grit number；Hydrostatic pressure 70Mpa is protected
Press time 120s.
The spindle of acquisition is sintered by the 4th step, and temperature is at 820 DEG C；Time 2 h；Hydrogen-nitrogen mixture gas protection.
Spindle after sintering is carried out hot extrusion by the 5th step, and temperature is at 720 DEG C；Time 2 h；Hydrogen-nitrogen mixture gas protection,
Wherein extrusion plate thickness 20mm and width 60mm.
Plate is cleaned with water and is carried out with silver plate compound by the 6th step.Hot composite deformation amount 70%, 750 degree of temperature,
N2 protection, Ag slice width degree 60mm and thickness 2mm.Composite effect can be further enhanced using cleaning with water.
Compound rear material strip is heat-treated by the 7th step, and wherein parameter can use: 750 degree of temperature, the time 12 hours,
Nitrogen hydrogen mixeding gas protection.
Material strip after heat treatment is carried out cold rolling and punching again by the 8th step, and cold rolling single track deformation amount controlling is 20%, material strip
Final thickness 2.0mm.
Sheet material after punching is carried out internal oxidition, between 700 degree of oxidizing temperature by the 9th step；The voltage-controlled system of oxygen is in 0.8Mpa；Oxidation
Time 55h.
Tenth step cleans sheet material after internal oxidition, and obtaining crystal grain exquisiteness uniformly can quickly aoxidize high-performance AgSnO2-
In2O3Contact material.
The present embodiment, which finally obtains crystal grain exquisiteness, uniformly can quickly aoxidize high-performance silver tin oxide or indium oxide contact material.
Wherein, oxidation rate promotes 32% than traditional handicraft.Contact electric life is than tradition raising 10%, particle uniform and smooth, welding surface
Smooth, welding performance is preferable.
Embodiment two
To prepare Ag (80) SnO2-In2O3For electrical contact material
The first step, by Ag ingot, Sn ingot, In ingot, additive Cu element carry out melting and ingot casting.Wherein Ag content is
83.5wt%, Sn content are 12wt%, and In content is 4wt%, and additive Cu is 0.5wt%.
Alloy molten solution after first step melting is atomized, atomization pressure 10Mpa by second step.
Powder after atomization is sieved and is waited static pressure by third step, crosses 100 mesh of grit number；Hydrostatic pressure 200Mpa is protected
Press time 30s.
The spindle of acquisition is sintered by the 4th step, and temperature is at 650 DEG C；Time 7 hours；H2 gas shield.
Spindle after sintering is carried out hot extrusion by the 5th step, and temperature is at 600 DEG C；Time 4 hours；Charcoal protection, wherein squeezing
Plate thickness 15mm and width 60mm.
Plate is cleaned with water and is carried out with silver plate compound by the 6th step.Hot composite deformation amount 40%, 500 degree of temperature,
Ar protection, Ag slice width degree 60mm and thickness 1mm.
Compound rear material strip is heat-treated by the 7th step, and wherein parameter can use: 450 degree of temperature, the time 6 hours, and N2
Gas shield.
Material strip after heat treatment is carried out cold rolling and punching again by the 8th step, and cold rolling single track deformation amount controlling is 5%, material strip
Final thickness 1.5mm.
Sheet material after punching is carried out internal oxidition, between 630 degree of oxidizing temperature by the 9th step；The voltage-controlled system of oxygen is in 5Mpa；When oxidation
Between 40h.
Tenth step cleans sheet material after internal oxidition, and obtaining crystal grain exquisiteness uniformly can quickly aoxidize high-performance AgSnO2-
In2O3Contact material.
The present embodiment, which finally obtains the present embodiment and finally obtains crystal grain exquisiteness, uniformly can quickly aoxidize high-performance silver tin oxide
Indium oxide contact material.Wherein, oxidation rate promotes 35% than traditional handicraft.Welding surface is smooth, and welding performance is preferable, contact
Electric life improves 15% than tradition, particle uniform and smooth.
Embodiment three
To prepare Ag (90) SnO2-In2O3For electrical contact material
The first step, by Ag ingot, Sn ingot, In ingot, additive Ni, Cu element carry out melting and ingot casting.Wherein Ag content is
93wt%, Sn content are 4.5wt%, and In content is 1.5wt%, and additive Ni is 0.5wt%, Cu 0.5%.
Alloy molten solution after first step melting is atomized, atomization pressure 5Mpa by second step.
Powder after atomization is sieved and is waited static pressure by third step, crosses 200 mesh of grit number；Hydrostatic pressure 100Mpa is protected
Press time 70s.
The spindle of acquisition is sintered by the 4th step, and temperature is at 750 DEG C；Time 5 hours；H2 gas shield.
Spindle after sintering is carried out hot extrusion by the 5th step, and temperature is at 680 DEG C；Time 3 hours；Charcoal protection, wherein squeezing
Plate thickness 10mm and width 70mm.
Plate is cleaned with water and is carried out with silver plate compound by the 6th step.Hot composite deformation amount 60%, 600 degree of temperature,
Ar protection, Ag slice width degree 70mm and thickness 1.5mm.
Compound rear material strip is heat-treated by the 7th step, and wherein parameter can use: 630 degree of temperature, the time 8 hours, and N2
Gas shield.
Material strip after heat treatment is carried out cold rolling and punching again by the 8th step, and cold rolling single track deformation amount controlling is 15%, material strip
Final thickness 2.5mm.
Sheet material after punching is carried out internal oxidition, between 580 degree of oxidizing temperature by the 9th step；The voltage-controlled system of oxygen is in 2Mpa；When oxidation
Between 95h.
Tenth step cleans sheet material after internal oxidition, and obtaining crystal grain exquisiteness uniformly can quickly aoxidize high-performance AgSnO2-
In2O3Contact material.
The present embodiment, which finally obtains the present embodiment and finally obtains crystal grain exquisiteness, uniformly can quickly aoxidize high-performance silver tin oxide
Indium oxide contact material.Wherein, oxidation rate promotes 31% than traditional handicraft.Welding surface is smooth, and welding performance is preferable, contact
Electric life improves 20% than tradition, particle uniform and smooth.
Example IV
To prepare Ag (90) SnO2-In2O3For electrical contact material
The first step, by Ag ingot, Sn ingot, In ingot, additive Zn element carry out melting and ingot casting.Wherein Ag content is
93wt%, Sn content are 4.5wt%, and In content is 2.5wt%.
Alloy molten solution after first step melting is atomized, atomization pressure 10Mpa by second step.
Powder after atomization is sieved and is waited static pressure by third step, crosses 100 mesh of grit number；Hydrostatic pressure 100Mpa is protected
Press time 70s.
The spindle of acquisition is sintered by the 4th step, and temperature is at 800 DEG C；Time 5 hours；H2 gas shield.
Spindle after sintering is carried out hot extrusion by the 5th step, and temperature is at 700 DEG C；Time 3 hours；Charcoal protection, wherein squeezing
Plate thickness 10mm and width 70mm.
Plate is cleaned with water and is carried out with silver plate compound by the 6th step.Hot composite deformation amount 60%, 620 degree of temperature,
Ar protection, Ag slice width degree 70mm and thickness 1.5mm.
Compound rear material strip is heat-treated by the 7th step, and wherein parameter can use: 630 degree of temperature, the time 6 hours, and N2
Gas shield.
Material strip after heat treatment is carried out cold rolling and punching again by the 8th step, and cold rolling single track deformation amount controlling is 15%, material strip
Final thickness 2.5mm.
Sheet material after punching is carried out internal oxidition, between 670 degree of oxidizing temperature by the 9th step；The voltage-controlled system of oxygen is in 2Mpa；When oxidation
Between 35h.
Tenth step cleans sheet material after internal oxidition, and obtaining crystal grain exquisiteness uniformly can quickly aoxidize high-performance AgSnO2-
In2O3Contact material.
The present embodiment, which finally obtains the present embodiment and finally obtains crystal grain exquisiteness, uniformly can quickly aoxidize high-performance silver tin oxide
Indium oxide contact material.Wherein, oxidation rate promotes 50% than traditional handicraft.Welding surface is smooth, and welding performance is preferable, contact
Electric life improves 40% than tradition, particle uniform and smooth.
As shown in Figure 1, for conventional internal oxidition AgSnO2(9)-In2O3(4) metallographic structure, crystal grain is coarseer, inhomogenous.
680 degree of internal oxidition oxygenation parameters, 1.5Mpa, 1.8mm thickness, complete oxidation time 75h.
As shown in Fig. 2, preparing AgSnO for the embodiment of the present invention2(9)-In2O3(4) metallographic structure, particle is fine and smooth, uniform；
680 degree of internal oxidition oxygenation parameters, 1.5Mpa, 1.8mm thickness, complete oxidation time 50h.
It is the embodiment for adding X element above, addition X element can be such that properties of product improve, so being above this hair
Bright preferred embodiment does not add also the same available quick oxidation silver-tin oxide or indium oxide electrical contact of X element certainly
Material, all steps operation and principle are all same as the previously described embodiments, this is easy to those skilled in the art
Understand, details are not described herein.
To sum up, the embodiment of the present invention no matter simple process, it is easy to operate, it is low in cost, to equipment without particular/special requirement, preparation
Contact material, uniform texture, fine and smooth, electric life is higher, can be widely applied to low-voltage electrical apparatus, and temperature rise is lower.
It can realize quick oxidation simultaneously, production efficiency is higher, shortens 30% or more compared to traditional internal oxidition time.
The foregoing is merely part preferred embodiments of the invention, not do any limit to technical scope of the invention
System.Any modification made all within the spirits and principles of the present invention, equivalent replacement and improvement etc., should be included in of the invention
Within protection scope.
Claims (13)
1. the preparation method that one kind can quickly aoxidize silver-tin oxide or indium oxide contact material, it is characterised in that: include:
S1 prepares AgSnIn or AgSnInX spindle using powder isostatic pressed method, and wherein X is that all can form conjunction with Ag, Sn
Gold and can be improved its electrical property element；
AgSnIn or AgSnInX plate is made after being sintered AgSnIn the or AgSnInX spindle in S2；
S3, AgSnIn the or AgSnInX plate and silver plate progress is compound, obtain compound rear plate；
The compound rear plate is heat-treated, cold rolling by S4, then punching is at sheet material；
The sheet material is carried out internal oxidition by S5, and acquisition can quickly aoxidize silver-tin oxide or indium oxide contact material.
2. the preparation method according to claim 1 that can quickly aoxidize silver-tin oxide or indium oxide contact material, feature
It is: described that AgSnIn or AgSnInX spindle is prepared using powder isostatic pressed method in S1, comprising:
Ag ingot, Sn ingot, In ingot are subjected to melting, or Ag ingot, Sn ingot, In ingot and X element are subjected to melting, obtains alloy solution；
The alloy solution is subjected to powder by atomization, obtains AgSnIn or AgSnInX powder；
AgSnIn the or AgSnInX powder is sieved and is waited static pressure, AgSnIn or AgSnInX spindle is prepared.
3. the preparation method according to claim 2 that can quickly aoxidize silver-tin oxide or indium oxide contact material, feature
It is: the melting, in which: it be 4.5~12%, In content is 1.5~4% that Ag content, which is 83.5%~93.5%, Sn content,
Wherein X total content≤1.0%.
4. the preparation method according to claim 2 that can quickly aoxidize silver-tin oxide or indium oxide contact material, feature
It is: the powder by atomization, in which: between atomization pressure 1.0Mpa~10Mpa.
5. the preparation method according to claim 2 that can quickly aoxidize silver-tin oxide or indium oxide contact material, feature
It is: described to be sieved and wait static pressure, in which: cross between 100 mesh of grit number~600 mesh, hydrostatic pressure is 70Mpa~200Mpa
Between.
6. the preparation method according to claim 1 that can quickly aoxidize silver-tin oxide or indium oxide contact material, feature
It is: in S2, the sintering, in which: temperature is between 650 DEG C -820 DEG C, H2Or hydrogen-nitrogen mixture gas protection.
7. the preparation method according to claim 1 that can quickly aoxidize silver-tin oxide or indium oxide contact material, feature
It is: in S2, after AgSnIn the or AgSnInX spindle is sintered, AgSnIn or AgSnInX is made using extrusion process
Plate.
8. the preparation method according to claim 7 that can quickly aoxidize silver-tin oxide or indium oxide contact material, feature
It is: the extruding, in which: temperature is between 600 DEG C -720 DEG C, charcoal or hydrogen-nitrogen mixture gas protection.
9. the preparation method according to claim 1 that can quickly aoxidize silver-tin oxide or indium oxide contact material, feature
Be: in S3, AgSnIn the or AgSnInX plate and silver plate being carried out compound, in which: hot composite deformation amount 40%~
Between 70%, temperature controls the N between 500 degree~750 degree2Or Ar protection.
10. the preparation method according to claim 1 that can quickly aoxidize silver-tin oxide or indium oxide contact material, feature
It is: in S4, the compound rear plate is heat-treated, in which: temperature leads to N between 450 degree~750 degree2Or nitrogen hydrogen is mixed
Close gas shield.
11. the preparation method according to claim 1 that can quickly aoxidize silver-tin oxide or indium oxide contact material, feature
Be: in S4, the cold rolling, wherein cold rolling single track deformation amount controlling is between 5%~20%.
12. the preparation method according to claim 1 that can quickly aoxidize silver-tin oxide or indium oxide contact material, feature
It is: in S5, the material strip is subjected to internal oxidition, in which: between 580 degree~700 degree of oxidizing temperature, the voltage-controlled system of oxygen is in 0.8Mpa
Between~5Mpa.
13. one kind can quickly aoxidize silver-tin oxide or indium oxide contact material, it is characterised in that: using according to claim 1-12
Any one the method is prepared.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112475295A (en) * | 2020-09-30 | 2021-03-12 | 福达合金材料股份有限公司 | Silver iron oxide electric contact material with oxide particles dispersed and distributed and preparation method thereof |
| CN114360948A (en) * | 2022-01-10 | 2022-04-15 | 温州宏丰特种材料有限公司 | Silver tin oxide indium oxide electric contact composite material and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102820153A (en) * | 2012-08-21 | 2012-12-12 | 福达合金材料股份有限公司 | Preparation method of refined AgSnO2In2O3 (silver tin oxide - indium oxide) crystal grain |
| CN107794389A (en) * | 2017-10-20 | 2018-03-13 | 温州宏丰电工合金股份有限公司 | A kind of silver-tin oxide or indium oxide contact material and preparation method thereof |
| CN107988505A (en) * | 2017-11-29 | 2018-05-04 | 温州宏丰电工合金股份有限公司 | Low contact resistance, high-performance silver silver-tin oxide electric contact material and preparation method thereof |
-
2019
- 2019-08-23 CN CN201910786745.8A patent/CN110423908B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102820153A (en) * | 2012-08-21 | 2012-12-12 | 福达合金材料股份有限公司 | Preparation method of refined AgSnO2In2O3 (silver tin oxide - indium oxide) crystal grain |
| CN107794389A (en) * | 2017-10-20 | 2018-03-13 | 温州宏丰电工合金股份有限公司 | A kind of silver-tin oxide or indium oxide contact material and preparation method thereof |
| CN107988505A (en) * | 2017-11-29 | 2018-05-04 | 温州宏丰电工合金股份有限公司 | Low contact resistance, high-performance silver silver-tin oxide electric contact material and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112475295A (en) * | 2020-09-30 | 2021-03-12 | 福达合金材料股份有限公司 | Silver iron oxide electric contact material with oxide particles dispersed and distributed and preparation method thereof |
| CN114360948A (en) * | 2022-01-10 | 2022-04-15 | 温州宏丰特种材料有限公司 | Silver tin oxide indium oxide electric contact composite material and preparation method thereof |
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| CN110423908B (en) | 2020-12-04 |
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