CN107130134A - A kind of silver copper oxide composited contact material and its preparation method and application - Google Patents
A kind of silver copper oxide composited contact material and its preparation method and application Download PDFInfo
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- CN107130134A CN107130134A CN201710293167.5A CN201710293167A CN107130134A CN 107130134 A CN107130134 A CN 107130134A CN 201710293167 A CN201710293167 A CN 201710293167A CN 107130134 A CN107130134 A CN 107130134A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C5/00—Alloys based on noble metals
- C22C5/06—Alloys based on silver
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C1/00—Making non-ferrous alloys
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- 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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Abstract
The invention discloses a kind of silver copper oxide composited contact material and its preparation method and application, the composition of the silver copper oxide composited contact material includes 5-7% cupric oxide by weight percentage, 3-6% tin oxide, 0.2-1% indium oxide, 0.05-1% additive, the additive is at least one of bismuth oxide, antimony oxide, nickel oxide and tellurium oxide, and surplus is silver.Its preparation method includes：Weigh each alloying element, carry out melting, then powder by atomization, pre-oxidation, high-temperature oxydation, ball milling, high-pressure oxidation, isostatic pressing sinters and extruded, finished product is then made.Obtained cupric oxide composited contact material working surface resistance is low and stably, with excellent combination property, good processability, non-environmental-pollution.
Description
Technical field
The present invention relates to a kind of electric contact material and preparation method thereof, and in particular to a kind of compound electrical contact material of silver copper oxide
Material and its preparation method and application.
Background technology
With continuing to develop for electric equipment products, the requirement to electric contact material is increasingly increased.It is required that material is in very big electric arc
Do not occur melting welding, mechanical and resistance to electric abrasioning performance under conditions of heat and Joule heat good, under larger current environment, resistance fusion welding
Good, material transfer is few, and contact resistance is low and stablizes.
Current its application of siluer metal oxide contact material is more universal, and conventional contact material has Agcdo, silver
Tin oxide, silver copper oxide, Ag-ZnO etc., it is all silver-colored and monometallic oxide, and combination property is undesirable, such as：Silver-colored oxygen
Although cadmium combination property is more excellent, manufacturing process also very stable maturation contains cadmium oxide in product, category harmful to environment
In the tactile material of non-environmental protection type electricity, progressively replaced by the siller tin oxide and silver copper oxide of environment-friendly type.Silver copper oxide cold working
Performance is good, and surface contacted resistance is low and stably, but its resistance fusion welding is poor；Relative to silver copper oxide, siller tin oxide is in big electricity
Under the condition of work of stream, tin oxide particle is easily to contact working surface migration precipitation so that the sheet resistance increase temperature rise of material
Accelerate, and siller tin oxide poor processability.
In summary, researching and developing a kind of superior and environmentally friendly contact material of combination property protrusion has highly important meaning
Justice.
The content of the invention
In view of the deficiencies of the prior art, the present invention provides a kind of silver copper oxide composited contact material and preparation method thereof and
Purposes, obtained compound electric touches that material surface resistance is low and stably, and with excellent combination property, good processability is acyclic
Pollute in border.
A kind of silver copper oxide composited contact material of the present invention, includes the component of following content：Aoxidize copper content
For 5-7%, oxidation Theil indices are 3-6%, and oxidation indium content is 0.2-1%, and additive content is 0.05-1%, described to add
Plus thing is at least one of bismuth oxide, antimony oxide, nickel oxide and tellurium oxide, surplus is silver, and the oxidation copper content is more than or waited
In oxidation Theil indices.
Further, oxidation copper content is 6%, and oxidation Theil indices are 3.5%, and oxidation indium content is 0.5%, aoxidizes bi content
For 0.25%, oxidation antimony content is 0.25%, and surplus is silver.
A kind of preparation method of silver copper oxide composited contact material of the present invention, it is comprised the following steps：
Step one, weigh and melting, needed for the silver copper oxide composited contact material proportioning prepared as required is calculated
Silver, copper, tin, the consumption of indium and additive, weigh standby；Described additive is at least one of bismuth and antimony；Multicomponent is closed
The addition of gold element improves the combination property of the tactile material of electricity；The silver weighed, copper, tin, indium and additive, are then placed in by melting
Liquation is smelted into mid-frequency melting furnace；So that the alloy of different constituent elements is evenly distributed；
Molten metal after melting is carried out gas-atomized powder by step 2, powder by atomization, and the granularity that powder is made is
150-320 mesh；Crystallization of refinement structure is acted on by the rapid solidification of gas-atomized powder, gross segregation is eliminated so that alloying component
Distribution is more uniform；
Powder made from step 2 is first heated to 100-200 DEG C by step 3, pre-oxidation, is incubated 1-2h, is then heated up
To 350-500 DEG C, 1-2h is incubated, room temperature is cooled to the furnace, pre-oxidation is using differential temperature oxidation, it is to avoid the too high tin of temperature directly melts
Change so that powder conglomeration, be first incubated with lower temperature, in tin surfaces formation oxide-film, temperature is then raised again, powder is completed
Pre-oxidation；
Powder made from step 3 is crossed 150-200 mesh sieves, then the powder of sieving is heated to by step 4, high-temperature oxydation
400-550 DEG C, 1-2h is incubated, 600-750 DEG C are then warming up to again, 2-3h is incubated, cools to room temperature with the furnace；It is stepped up
Oxidizing temperature so that Powder Oxidation more fully, shorten oxidization time and make it that oxygen-depleted zone levels off to zero, improves conventional isothermal
The oxidation gradient that oxidation is present causes the phenomenon that oxide concentration is failed to act and thought in the same way；
Powder made from step 4 is carried out ball milling by step 5, ball milling, and Ball-milling Time is 1-5h；Ball milling make powder into
Divide more uniform, more preferably, granularity and pattern are more suitable for postorder processing for the infiltration of additive and dispersivity；The oxygen on broken powder surface
Change film so that unoxidized part is exposed in powder, and subsequent oxidation is more abundant；
Powder made from step 5 is placed in oxidation furnace by step 6, high-pressure oxidation, and is filled with high purity oxygen gas, oxidation temperature
Spend for 600-800 DEG C, air pressure is 0.5-1.7MPa, is incubated 1-2h, is subsequently cooled to room temperature；Answered using HTHP
The oxidation of condensation material powder so that alloy powder oxidation is more abundant；
Step 7, isostatic pressing, by 1-5h of powder ball milling made from step 6, then sieves, and the mesh of screen cloth 150 waits quiet
Molded is ingot；Hydrostatic pressure is 170-210MPa, and the dwell time is 50-120s；Obtained ingot density point
Cloth is homogeneous, improves the performance of ingot；
Step 8, is sintered and extrudes, and ingot made from step 7 is sintered, and sintering temperature is 850-880 DEG C, sintering
Time is 3-8h, is subsequently cooled to room temperature, then carries out hot extrusion, and extrusion temperature is 850-880 DEG C, and finished product is then made.
Further, the granularity that powder is made in the step 2 is 120-200 mesh.
Further, powder made from step 2 is first heated to 200 DEG C in the step 3, is incubated 2h, is then warming up to
400 DEG C, 1.5h is incubated, room temperature is cooled to the furnace.
Further, powder made from step 3 is crossed into 200 mesh sieves in the step 4.
Further, powder made from step 3 is first heated to 500 DEG C in the step 4, is incubated 2h, then heats up again
To 700 DEG C, 3h is incubated, room temperature is cooled to the furnace.
Further, oxidizing temperature is 750 DEG C in the step 6, and air pressure is 1.2MPa, is incubated 2h.
Further, the Ball-milling Time in the step 5 and step 7 is 2h.
Further, described silver copper oxide composited contact material is in compressor thermal protector or magnetic latching relay
Using.
The beneficial effects of the invention are as follows：
1st, in material of the invention, by the compound addition silver matrix of copper, tin, indium and additive, using cupric oxide as
It is main, it is aided with tin oxide, improves the combination property of the tactile material of electricity so that the mutual supplement with each other's advantages of each constituent element；It is embodied in：A. oxygen
Changing copper improves the electrical contact performance of the tactile material of electricity, compensate for the tactile material work surface contacted resistance increase of siller tin oxide electricity, temperature rise
High shortcoming, the addition of copper improves wetability of the silver matrix to oxide, while composite oxides spread to silver-colored area, forms jail
Solid wetting interface, reduce the contact resistance of the tactile material of electricity, reduce the temperature rise in operating process；B. the anti-melting welding of tin oxide
Property it is stronger, compensate for silver copper oxide resistance fusion welding and anti-electrical loss difference shortcoming；C. the addition of additive enhances tin oxide
With the wettability of silver matrix, prevent tin oxide from being separated out in crystal boundary, improve the resistance fusion welding of contact material, improve electrical contact material
The processing characteristics of material, the addition of d. phosphide elements inhibits the generation of tin surfaces dense oxidation film, promotes oxygen atom to expansion inside tin
Dissipate, make the internal oxidition of tin element more abundant, shorten the oxidization time of tin element, while be conducive to oxide particle it is tiny,
It is distributed in silver matrix to disperse, and the indium by lower content and tin element are used in combination, and meet contact material
It can require, while reducing manufacturing cost.
2nd, in method of the invention, aoxidized in preoxidation process using differential temperature, it is to avoid the too high tin of temperature directly melts so that
Powder conglomeration, is first incubated with lower temperature, in tin surfaces formation oxide-film, then raises temperature；Ball milling after high-temperature oxydation, can break
The oxide-film on comminuted powder surface so that unoxidized part is exposed in powder, carries out high-pressure oxidation so that powder again after ball milling
End oxidation is more abundant, and distribution is more uniform, shortens oxidization time, and the infiltration of additive and dispersivity are more preferable, granularity and shape
Looks are more suitable for postorder processing.
3rd, the present invention is due to the combination using specific proportioning and preparation method, obtained silver copper oxide composited contact material
It is especially suitable for compressor thermal protector, when larger current works, its resistance fusion welding and electric conductivity and Agcdo
Performance is suitable, while the environmental requirement of contact material is met, it is environmentally safe during production preparation and use.
Brief description of the drawings
Fig. 1 is the preparation flow figure of silver copper oxide composited contact material of the present invention.
Embodiment
The present invention is elaborated with reference to specific embodiment.
A kind of embodiment 1, silver copper oxide composited contact material, includes the component of following content：Aoxidizing copper content is
6%, oxidation Theil indices are 3.5%, and oxidation indium content is 0.5%, and tellurium oxide content is 0.25%, and oxidation antimony content is
0.25%, surplus is silver.Its preparation method is：
Step one, weigh and melting, needed for the silver copper oxide composited contact material proportioning prepared as required is calculated
Silver, copper, tin, indium, the consumption of bismuth and antimony, weigh standby；Then the silver weighed, copper, tin, indium and additive are placed in into intermediate frequency to melt
Liquation is smelted into furnace；
Molten metal after melting is carried out gas-atomized powder by step 2, powder by atomization, and the granularity that powder is made is
150-200 mesh；
Step 3, pre-oxidation, powder made from step 2 is pre-oxidized；200 DEG C are first to heat to, 2h is incubated, then
400 DEG C are warming up to, 1.5h is incubated, cools to room temperature with the furnace；
Powder made from step 3 is crossed 200 mesh sieves, then the powder of sieving is heated into 450 by step 4, high-temperature oxydation
DEG C, 2h is incubated, 700 DEG C are then warming up to again, 3h is incubated, cools to room temperature with the furnace；
Powder made from step 4 is carried out ball milling, Ball-milling Time is 2h by step 5, ball milling；
Powder made from step 5 is placed in oxidation furnace by step 6, high-pressure oxidation, and is filled with high purity oxygen gas, oxidation temperature
Spend for 700 DEG C, air pressure is 1MPa, be incubated 2h, be subsequently cooled to room temperature；
Step 7, isostatic pressing by powder ball milling 2h made from step 6, then crosses 150 mesh sieves, isostatic pressing is
Ingot, hydrostatic pressure is 180MPa, and the dwell time is 50s；
Step 8, is sintered and extrudes, and ingot made from step 7 is sintered, and sintering temperature is 865 DEG C, and sintering time is
5h, is subsequently cooled to room temperature, then carries out hot extrusion, and extrusion temperature is 865 DEG C, and finished product is then made.
A kind of embodiment 2, silver copper oxide composited contact material, includes the component of following content：Aoxidizing copper content is
6%, oxidation Theil indices are 5%, and oxidation indium content is 0.2%, and oxidation bi content is 0.1%, and oxidation antimony content is 0.1%, remaining
Measure as silver.Its preparation method is：
Step one, weigh and melting, needed for the silver copper oxide composited contact material proportioning prepared as required is calculated
Silver, copper, tin, indium, the consumption of bismuth and antimony, weigh standby；Then the silver weighed, copper, tin, indium and additive are placed in into intermediate frequency to melt
Liquation is smelted into furnace；
Molten metal after melting is carried out gas-atomized powder by step 2, powder by atomization, and the granularity that powder is made is
150-320 mesh；
Step 3, pre-oxidation, powder made from step 2 is pre-oxidized；100 DEG C are first to heat to, 2h is incubated, then
350 DEG C are warming up to, 2h is incubated, cools to room temperature with the furnace；
Powder made from step 3 is crossed 150 mesh sieves, then the powder of sieving is heated into 400 by step 4, high-temperature oxydation
DEG C, 2h is incubated, 600 DEG C are then warming up to again, 3h is incubated, cools to room temperature with the furnace；
Powder made from step 4 is carried out ball milling, Ball-milling Time is 1h by step 5, ball milling；
Powder made from step 5 is placed in oxidation furnace by step 6, high-pressure oxidation, and is filled with high purity oxygen gas, oxidation temperature
Spend for 600 DEG C, air pressure is 1.2MPa, be incubated 2h, be subsequently cooled to room temperature；
Step 7, isostatic pressing by powder ball milling 1h made from step 6, then crosses 150 mesh sieves, isostatic pressing is
Ingot, hydrostatic pressure is 200MPa, and the dwell time is 80s；
Step 8, is sintered and extrudes, and ingot made from step 7 is sintered, and sintering temperature is 850 DEG C, and sintering time is
8h, is subsequently cooled to room temperature, then carries out hot extrusion, and extrusion temperature is 850 DEG C, and finished product is then made.
A kind of embodiment 3, silver copper oxide composited contact material, includes the component of following content：Aoxidizing copper content is
6%, oxidation Theil indices are 5.5%, and oxidation indium content is 0.2%, and tellurium oxide content is 0.2%, and surplus is silver.Its preparation method
For：
Step one, weigh and melting, needed for the silver copper oxide composited contact material proportioning prepared as required is calculated
Silver, copper, tin, indium, the consumption of bismuth and antimony, weigh standby；Then the silver weighed, copper, tin, indium and additive are placed in into intermediate frequency to melt
Liquation is smelted into furnace；
Molten metal after melting is carried out gas-atomized powder by step 2, powder by atomization, and the granularity that powder is made is
150-320 mesh；
Step 3, pre-oxidation, powder made from step 2 is pre-oxidized；200 DEG C are first to heat to, 1h is incubated, then
500 DEG C are warming up to, 1h is incubated, cools to room temperature with the furnace；
Powder made from step 3 is crossed 200 mesh sieves, then the powder of sieving is heated into 550 by step 4, high-temperature oxydation
DEG C, 1h is incubated, 750 DEG C are then warming up to again, 2h is incubated, cools to room temperature with the furnace；
Powder made from step 4 is carried out ball milling, Ball-milling Time is 5h by step 5, ball milling；
Powder made from step 5 is placed in oxidation furnace by step 6, high-pressure oxidation, and is filled with high purity oxygen gas, oxidation temperature
Spend for 800 DEG C, air pressure is 0.5MPa, be incubated 1h, be subsequently cooled to room temperature；
Step 7, isostatic pressing by powder ball milling 5h made from step 6, then crosses 150 mesh sieves, isostatic pressing is
Ingot, hydrostatic pressure is 170MPa, and the dwell time is 70s；
Step 8, is sintered and extrudes, and ingot made from step 7 is sintered, and sintering temperature is 880 DEG C, and sintering time is
3h, is subsequently cooled to room temperature, then carries out hot extrusion, and extrusion temperature is 880 DEG C, and finished product is then made.
A kind of embodiment 4, silver copper oxide composited contact material, includes the component of following content：Aoxidizing copper content is
7%, oxidation Theil indices are 6%, and oxidation indium content is 1%, and oxidation antimony content is 0.05%, and surplus is silver.Its preparation method is：
Step one, weigh and melting, needed for the silver copper oxide composited contact material proportioning prepared as required is calculated
Silver, copper, tin, indium, the consumption of bismuth and antimony, weigh standby；Then the silver weighed, copper, tin, indium and additive are placed in into intermediate frequency to melt
Liquation is smelted into furnace；
Molten metal after melting is carried out gas-atomized powder by step 2, powder by atomization, and the granularity that powder is made is
150-320 mesh；
Step 3, pre-oxidation, powder made from step 2 is pre-oxidized；150 DEG C are first to heat to, 1.5h is incubated, so
After be warming up to 400 DEG C, be incubated 1.5h, cool to room temperature with the furnace；
Powder made from step 3 is crossed 175 mesh sieves, then the powder of sieving is heated into 475 by step 4, high-temperature oxydation
DEG C, 1.5h is incubated, 675 DEG C are then warming up to again, 1.5h is incubated, cools to room temperature with the furnace；
Powder made from step 4 is carried out ball milling, Ball-milling Time is 3h by step 5, ball milling；
Powder made from step 5 is placed in oxidation furnace by step 6, high-pressure oxidation, and is filled with high purity oxygen gas, oxidation temperature
Spend for 700 DEG C, air pressure is 0.8MPa, be incubated 1.5h, be subsequently cooled to room temperature；
Step 7, isostatic pressing by powder ball milling 5h made from step 6, then crosses 150 mesh sieves, isostatic pressing is
Ingot, hydrostatic pressure is 180MPa, and the dwell time is 50s；
Step 8, is sintered and extrudes, and ingot made from step 7 is sintered, and sintering temperature is 850 DEG C, and sintering time is
6h, is subsequently cooled to room temperature, then carries out hot extrusion, and extrusion temperature is 850 DEG C, and finished product is then made.
A kind of embodiment 5, silver copper oxide composited contact material, includes the component of following content：Aoxidizing copper content is
5%, oxidation Theil indices are 5%, and oxidation indium content is 0.8%, and oxidation bi content is 0.5%, and oxidation antimony content is 0.5%, remaining
Measure as silver.Its preparation method is：
Step one, weigh and melting, needed for the silver copper oxide composited contact material proportioning prepared as required is calculated
Silver, copper, tin, indium, the consumption of bismuth and antimony, weigh standby；Then the silver weighed, copper, tin, indium and additive are placed in into intermediate frequency to melt
Liquation is smelted into furnace；
Molten metal after melting is carried out gas-atomized powder by step 2, powder by atomization, and the granularity that powder is made is
150-200 mesh；
Step 3, pre-oxidation, powder made from step 2 is pre-oxidized；200 DEG C are first to heat to, 2h is incubated, then
400 DEG C are warming up to, 2h is incubated, cools to room temperature with the furnace；
Powder made from step 3 is crossed 200 mesh sieves, then the powder of sieving is heated into 500 by step 4, high-temperature oxydation
DEG C, 2h is incubated, 700 DEG C are then warming up to again, 2h is incubated, cools to room temperature with the furnace；
Powder made from step 4 is carried out ball milling, Ball-milling Time is 4h by step 5, ball milling；
Powder made from step 5 is placed in oxidation furnace by step 6, high-pressure oxidation, and is filled with high purity oxygen gas, oxidation temperature
Spend for 700 DEG C, air pressure is 1.7MPa, be incubated 2h, be subsequently cooled to room temperature；
Step 7, isostatic pressing by powder ball milling 4h made from step 6, then crosses 150 mesh sieves, isostatic pressing is
Ingot, hydrostatic pressure is 210MPa, and the dwell time is 120s；
Step 8, is sintered and extrudes, and ingot made from step 7 is sintered, and sintering temperature is 870 DEG C, and sintering time is
7h, is subsequently cooled to room temperature, then carries out hot extrusion, and extrusion temperature is 870 DEG C, and finished product is then made.
Embodiment 6, performance comparison test, comparative example is respectively：AgCuO、AgSnO2、AgCuOSnO2With
AgCuOSnO2In2The content of cupric oxide is 10% in O3, wherein AgCuO, and surplus is silver；AgSnO2The content of middle tin oxide is
10%, surplus is silver；AgCuOSnO2The content of middle cupric oxide is 6%, and the content of tin oxide is 4%, and surplus is silver；
AgCuOSnO2In2O3Middle oxidation copper content is 6%, and the content of tin oxide is 3.5%, and the content of indium oxide is 0.5%, embodiment
The contact material finished product made from embodiment 1, under identical experiment condition, measures the resistance of embodiment and comparative example respectively
Rate, temperature rise, electric life, resistance fusion welding energy, wherein electric life measurement experimental condition be：The material of comparative example and embodiment is done
Into silver alloy/three layers of the copper/iron solder contacts or soil for electrical contact of identical standard, the compressor of same specifications and models is subsequently used for
Protector or magnetic latching relay, are 120A in electric current, loadtype is resistive, Ue=AC250V, single-phase；Control voltage Us=
Electrical endurance test is carried out under conditions of 12VDC, as a result as shown in table 1：
The electricity of the embodiment of table 1 and comparative example touches the performance indications of material
The tactile material of electricity made from embodiment 1 is compared with the electricity of comparative example touches material, and electric life is longer, and material is more robust, and
Resistance fusion welding can be protruded, and working surface contact resistance is relatively low compared to silver tin oxide material, and temperature rise is relatively low, with good synthesis
Performance.
The present invention is described in detail above, embodiments of the present invention carried out using specific case in the present invention
Illustrate, the explanation of above example is only intended to help and understands the present invention, it is noted that for the technology people of the art
For member, under the premise without departing from the principles of the invention, some improvement can be also carried out to the present invention, these improvement also fall into this hair
In bright scope of the claims.
Claims (10)
1. a kind of silver copper oxide composited contact material, it is characterised in that include the component of following content：Aoxidize copper content be 5-
7%, oxidation Theil indices are 3-6%, and oxidation indium content is 0.2-1%, and additive content is 0.05-1%, and the additive is oxygen
Change at least one of bismuth, antimony oxide, nickel oxide and tellurium oxide, surplus is silver, the oxidation copper content is more than or equal to tin oxide
Content.
2. silver copper oxide composited contact material according to claim 1, it is characterised in that include the component of following content：
It is 6% to aoxidize copper content, and oxidation Theil indices are 3.5%, and oxidation indium content is 0.5%, and oxidation bi content is 0.25%, aoxidizes antimony content
For 0.25%, surplus is silver.
3. a kind of preparation method of silver copper oxide composited contact material, it is characterised in that comprise the following steps：
Step one, weigh and melting, institute is calculated according to the silver copper oxide composited contact material proportioning described in claim 1 or 2
The consumption of the silver, copper, tin, indium and the additive that need, weighs standby；Described additive be at least one of bismuth and antimony, then
The silver weighed, copper, tin, indium and additive are placed in mid-frequency melting furnace and are smelted into liquation；
Molten metal after melting is carried out gas-atomized powder by step 2, powder by atomization, and the granularity that powder is made is 150-320
Mesh；
Step 3, pre-oxidation, powder made from step 2 is pre-oxidized；100-200 DEG C are first to heat to, 1-2h is incubated,
Then 350-500 DEG C are warming up to, 1-2h is incubated, cools to room temperature with the furnace；
Powder made from step 3 is crossed 150-200 mesh sieves, then the powder of sieving is heated to by step 4, high-temperature oxydation
400-550 DEG C, 1-2h is incubated, 600-750 DEG C are then warming up to again, 2-3h is incubated, cools to room temperature with the furnace；
Powder made from step 4 is carried out ball milling by step 5, ball milling, and Ball-milling Time is 1-5h；
Powder made from step 5 is placed in oxidation furnace by step 6, high-pressure oxidation, and is filled with high purity oxygen gas, and oxidizing temperature is
600-800 DEG C, air pressure is 0.5-1.7MPa, is incubated 1-2h, is subsequently cooled to room temperature；
Step 7, isostatic pressing by 1-5h of powder ball milling made from step 6, then crosses 150 mesh sieves, isostatic pressing is
Ingot, hydrostatic pressure is 170-210MPa, and the dwell time is 50-120s；
Step 8, is sintered and extrudes, and ingot made from step 7 is sintered, and sintering temperature is 850-880 DEG C, sintering time
For 3-8h, room temperature is subsequently cooled to, then carries out hot extrusion, extrusion temperature is 850-880 DEG C, and finished product is then made.
4. the preparation method of silver copper oxide composited contact material according to claim 3, it is characterised in that：The step
Two granularities that powder is made are 120-200 mesh.
5. the preparation method of silver copper oxide composited contact material according to claim 3, it is characterised in that：The step
Powder made from step 2 is first heated to 200 DEG C in three, 2h is incubated, 400 DEG C are then warming up to, 1.5h, furnace cooling is incubated
To room temperature.
6. the preparation method of silver copper oxide composited contact material according to claim 3, it is characterised in that：The step
Powder made from step 3 is crossed into 200 mesh sieves in four.
7. the preparation method of silver copper oxide composited contact material according to claim 3, it is characterised in that：The step
Powder made from step 3 is first heated to 500 DEG C in four, 2h is incubated, 700 DEG C are then warming up to again, 3h, furnace cooling is incubated
To room temperature.
8. the preparation method of silver copper oxide composited contact material according to claim 3, it is characterised in that：The step
Oxidizing temperature is 750 DEG C in six, and air pressure is 1.2MPa, is incubated 2h.
9. the preparation method of silver copper oxide composited contact material according to claim 3, it is characterised in that：The step
Five and step 7 in Ball-milling Time be 2h.
10. the silver copper oxide composited contact material according to any one of claim 1-2 is in compressor thermal protector or magnetic
Application in guard relay.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710293167.5A CN107130134B (en) | 2017-04-28 | 2017-04-28 | A kind of silver copper oxide composited contact material and its preparation method and application |
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| CN201710293167.5A CN107130134B (en) | 2017-04-28 | 2017-04-28 | A kind of silver copper oxide composited contact material and its preparation method and application |
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| CN107130134A true CN107130134A (en) | 2017-09-05 |
| CN107130134B CN107130134B (en) | 2019-04-16 |
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| CN201710293167.5A Active CN107130134B (en) | 2017-04-28 | 2017-04-28 | A kind of silver copper oxide composited contact material and its preparation method and application |
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Cited By (8)
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| CN107881360A (en) * | 2017-10-31 | 2018-04-06 | 靖江市海源有色金属材料有限公司 | Silver copper oxide stannic oxide materials and its manufacture method |
| CN113699402A (en) * | 2021-08-25 | 2021-11-26 | 石家庄铁道大学 | Preparation method of silver tin oxide electrical contact material containing copper oxide nano additive |
| CN114457253A (en) * | 2021-12-30 | 2022-05-10 | 无锡日月合金材料有限公司 | Silver nickel-bismuth oxide material for microswitch and manufacturing method thereof |
| CN115537594A (en) * | 2022-10-28 | 2022-12-30 | 台州慧模科技有限公司 | Silver-based electrical contact material and preparation method thereof |
| CN115740465A (en) * | 2022-12-13 | 2023-03-07 | 温州中希电工合金有限公司 | Silver tin oxide contact material and preparation method thereof |
| CN115927899A (en) * | 2022-12-13 | 2023-04-07 | 温州中希电工合金有限公司 | Silver copper oxide contact material and preparation method thereof |
| CN116837247A (en) * | 2023-05-22 | 2023-10-03 | 贵研中希（上海）新材料科技有限公司 | Preparation method of electric contact noble metal material for new energy field |
| CN117107100A (en) * | 2023-08-28 | 2023-11-24 | 昆明理工大学 | Method for reinforcing silver-based material by metal oxide with core-shell structure |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107881360A (en) * | 2017-10-31 | 2018-04-06 | 靖江市海源有色金属材料有限公司 | Silver copper oxide stannic oxide materials and its manufacture method |
| CN113699402A (en) * | 2021-08-25 | 2021-11-26 | 石家庄铁道大学 | Preparation method of silver tin oxide electrical contact material containing copper oxide nano additive |
| CN114457253A (en) * | 2021-12-30 | 2022-05-10 | 无锡日月合金材料有限公司 | Silver nickel-bismuth oxide material for microswitch and manufacturing method thereof |
| CN114457253B (en) * | 2021-12-30 | 2022-12-09 | 无锡日月合金材料有限公司 | Silver nickel-bismuth oxide material for microswitch and manufacturing method thereof |
| CN115537594A (en) * | 2022-10-28 | 2022-12-30 | 台州慧模科技有限公司 | Silver-based electrical contact material and preparation method thereof |
| CN115740465A (en) * | 2022-12-13 | 2023-03-07 | 温州中希电工合金有限公司 | Silver tin oxide contact material and preparation method thereof |
| CN115927899A (en) * | 2022-12-13 | 2023-04-07 | 温州中希电工合金有限公司 | Silver copper oxide contact material and preparation method thereof |
| CN115740465B (en) * | 2022-12-13 | 2023-08-18 | 温州中希电工合金有限公司 | Silver tin oxide contact material and preparation method thereof |
| CN116837247A (en) * | 2023-05-22 | 2023-10-03 | 贵研中希（上海）新材料科技有限公司 | Preparation method of electric contact noble metal material for new energy field |
| CN116837247B (en) * | 2023-05-22 | 2024-02-06 | 贵研中希（上海）新材料科技有限公司 | Preparation method of electric contact noble metal material for new energy field |
| CN117107100A (en) * | 2023-08-28 | 2023-11-24 | 昆明理工大学 | Method for reinforcing silver-based material by metal oxide with core-shell structure |
| CN117107100B (en) * | 2023-08-28 | 2024-01-30 | 昆明理工大学 | Method for reinforcing silver-based material by metal oxide with core-shell structure |
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