CN106518128A - C/C radiating fin and stainless steel connection method - Google Patents
C/C radiating fin and stainless steel connection method Download PDFInfo
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- CN106518128A CN106518128A CN201611213498.5A CN201611213498A CN106518128A CN 106518128 A CN106518128 A CN 106518128A CN 201611213498 A CN201611213498 A CN 201611213498A CN 106518128 A CN106518128 A CN 106518128A
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B37/00—Joining burned ceramic articles with other burned ceramic articles or other articles by heating
- C04B37/02—Joining burned ceramic articles with other burned ceramic articles or other articles by heating with metallic articles
- C04B37/023—Joining burned ceramic articles with other burned ceramic articles or other articles by heating with metallic articles characterised by the interlayer used
- C04B37/026—Joining burned ceramic articles with other burned ceramic articles or other articles by heating with metallic articles characterised by the interlayer used consisting of metals or metal salts
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
- C04B2237/02—Aspects relating to interlayers, e.g. used to join ceramic articles with other articles by heating
- C04B2237/12—Metallic interlayers
- C04B2237/125—Metallic interlayers based on noble metals, e.g. silver
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
- C04B2237/02—Aspects relating to interlayers, e.g. used to join ceramic articles with other articles by heating
- C04B2237/12—Metallic interlayers
- C04B2237/126—Metallic interlayers wherein the active component for bonding is not the largest fraction of the interlayer
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
- C04B2237/02—Aspects relating to interlayers, e.g. used to join ceramic articles with other articles by heating
- C04B2237/12—Metallic interlayers
- C04B2237/126—Metallic interlayers wherein the active component for bonding is not the largest fraction of the interlayer
- C04B2237/127—The active component for bonding being a refractory metal
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
- C04B2237/30—Composition of layers of ceramic laminates or of ceramic or metallic articles to be joined by heating, e.g. Si substrates
- C04B2237/32—Ceramic
- C04B2237/38—Fiber or whisker reinforced
- C04B2237/385—Carbon or carbon composite
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
- C04B2237/30—Composition of layers of ceramic laminates or of ceramic or metallic articles to be joined by heating, e.g. Si substrates
- C04B2237/40—Metallic
- C04B2237/405—Iron metal group, e.g. Co or Ni
- C04B2237/406—Iron, e.g. steel
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
- C04B2237/50—Processing aspects relating to ceramic laminates or to the joining of ceramic articles with other articles by heating
- C04B2237/52—Pre-treatment of the joining surfaces, e.g. cleaning, machining
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Powder Metallurgy (AREA)
Abstract
The invention relates to a C/C radiating fin and stainless steel connection method. A vacuum brazing connection method is adopted. High-thermal-conductivity Ag-based braze alloy is used as an intermediate layer. Compared with other dissimilar material connection methods, the C/C radiating fin and stainless steel connection method has the advantages of being high in efficiency, fast, low in cost and particularly rotary shaft connection of large irregular parts. The method comprises the specific technological steps that connection surfaces of a C/C radiating fin and stainless steel are ground and polished, and the C/C radiating fin and the stainless steel are placed in anhydrous ethanol for ultrasonic cleaning and then are dried; self-made AgCuTi braze alloy is prepared into slurry, and the connecting end faces of the C/C radiating fin and the stainless steel are coated with the slurry; the two connection fracture surfaces are overlapped, and a sample is clamped by using a designed fixture; and then the C/C radiating fin and the stainless steel are placed into a vacuum brazing furnace horizontally for connection. The connection method provided by the invention has the advantages of simple process, safety, reliability, low cost and high connection strength.
Description
Technical field
The invention belongs to composite and the method for attachment of metal, are related to a kind of C/C radiating fins and stainless method of attachment.
Background technology
With modern industry level, the high development of defense technology, radiating becomes the key technology of many field development.Space flight flies
The electronic equipment of row device heat control system tends to small-sized efficient, quality lightweight, compact conformation, can produce in running and
Substantial amounts of heat is accumulated, has the special and requirement of harshness to material used；The large-area thin plate of the spacecrafts such as satellite
The space industries such as structure, guided missile nose-cone, solid rocket motor nozzle work severeer position and nuclear fusion stack with facing
Plasma material, the excellent combination property such as need material to have light weight thermal conductivity strong mechanical performance good.
Currently used for the fields such as nuclear energy, thermoelectricity, metallurgy heat abstractor still based on the connector of metal and metal, compared to
Traditional heat radiating metal material, high heat conduction C/C composite have excellent low-density, high heat conduction, low thermal coefficient of expansion and solely
The performances such as some high-temp and high-strengths, meanwhile, and as which has especially low neutron activation energy, low atomic number, very high
Fusing point and biochemical temperature become high heat conduction candidate material optimal at present.
Compared to the high thermal conductivity of copper, although stainless thermal conductivity is tender in a slight decrease, stainless intensity is higher, resistance to punching
Hit the good and higher corrosion resistance of performance.
If radiating fin adopts C/C materials, C/C radiating fins and stainless steel tube are coupled together, high-temperature heat flux is in stainless steel
In flow to the other end from one end, and the heat for producing on tube wall in the process is transmitted to C/C radiating fins by thermal conduction mechanism,
So as to quickly reduce the heat of stainless steel tube wall.The radiator structure that this C/C radiating fins are connected with stainless steel tube, can be effective
Improve radiating efficiency, the thermal efficiency improve 30%, and due to C/C radiating fins relative to traditional high-thermal conductive metal material in quality
On alleviate it is a lot.So using C/C radiating fins and stainless connector as the fields such as nuclear energy, thermoelectricity, metallurgy radiating
Device has very high using value.
But, there is difficulty with stainless connection in current C/C composites, its difficulty is both physicochemical properties phases
Difference is big, and its thermal coefficient of expansion mismatch problem can cause connector to produce larger residual thermal stress, and induction crackle connects in joint
Border face or near interface are produced, and ultimately result in the fracture of joint premature failure.
The content of the invention
Technical problem to be solved
In place of the deficiencies in the prior art, the present invention proposes a kind of C/C radiating fins and stainless method of attachment, solution
The certainly connectivity problem of C/C radiating fins and stainless steel tube.The method compared to other foreign materials method of attachment have efficiently,
Fast, low cost, be particularly suited for the connection of large scale special-shaped part.
Technical scheme
A kind of C/C radiating fins and stainless method of attachment, it is characterised in that step is as follows：
The pretreatment of step 1, connection surface：The portion faces that C/C radiating fins are connected with stainless steel are polished and thrown
Light process, and dried in baking oven after ultrasonic wave cleaning again in absolute ethyl alcohol；
The preparation of step 2, solder：By Ag powder, Cu powder and Ti powder, Ag-26.7Cu-4.5Ti by weight percentage is by three kinds of simple substance
Powder is mixed, and the alcohol for adding, and carries out mechanical ball mill 40h, reach the effect of brazing filler metal alloy in being put into planetary type ball-milling tank
Really；After ball milling terminates, by solder powder dried process, and 1 is used:1 paraffin and vaseline mix dried solder powder
End is made into Slurries solder；The addition of the alcohol for solder 10%；
Step 3：On the end face being connected of the C/C radiating fins with stainless steel tube, then the Slurries solder of step 2 is painted on
Two connecting end surfaces are superimposed and are clamped, is lain low；Heating process is：With 10～15 DEG C/min
Ramp is to 500 DEG C and is incubated 20min, then with the ramp of 6～12 DEG C/min to 900 DEG C, is incubated 10～20min,
Then cool to room temperature with the furnace, carbide and solid solution are formed at linkage interface, complete C/C radiating fins with stainless steel tube
Connection.
The particle diameter of described Ag powder, Cu powder and Ti powder is 500 mesh.
Beneficial effect
A kind of C/C radiating fins proposed by the present invention and stainless method of attachment, using a kind of method of attachment of vacuum brazing,
And using high heat conduction Ag base solder as intermediate layer, the method has efficiently, soon compared to the method for attachment of other foreign materials
Victory, low cost, the connection for being particularly suited for large scale special-shaped part.Concrete technology method and step is：By C/C radiating fins and stainless steel
Connection surface carries out grinding and buffing process, and ultrasonic wave is cleaned and dried in absolute ethyl alcohol, by homemade AgCuTi solders
Slurries brushing is made on the connecting end surface of C/C radiating fins and stainless steel tube, after then be superimposed two connection sections, is used in combination
Sample is clamped by the fixture of design, is then lain low.
The method of attachment process is simple that the present invention is provided, safe and reliable, with low cost, bonding strength is high.Beneficial effect is：Abandon
Traditional metal and metal heat-conducting device connector in the fields such as nuclear energy, thermoelectricity, metallurgy, and adopt high heat conduction C/C composite
Material alternatively.Connector of the C/C radiating fins with stainless steel tube is used for into heat abstractor.Using process be profit
With efficiently, efficiently Vacuum Soldering Technology, C/C radiating fins and stainless steel are attached, connecting-piece structure completely, integrated beauty
See, and bonding strength reaches 30MPa or so.
Description of the drawings
Fig. 1 is the connection diagram of C/C radiating fins and stainless steel tube.
Under the conditions of Fig. 2 is 900 DEG C, C/C radiating fins and stainless joint scanned photograph, from the figure, it can be seen that C/C with not
The joint connection of rust steel is good, and intermediate layer and interface do not have obvious defect.
Specific embodiment
In conjunction with embodiment, accompanying drawing, the invention will be further described：
Precast body is made using cloth lamination method, is then accommodated with the grinding tool of radiating fin, and is put into thermal gradient furnace
(TCVI) deposited in.Finally the C/C radiating fins being deposited are heat-treated, the C/C that can be used are finally given and is dissipated
Hot fin.
Embodiment one：
(A) pretreatment of connection surface；
Grinding and buffing process, and the ultrasonic wave in absolute ethyl alcohol will be carried out with C/C radiating fins and stainless steel tube connection surface
Cleaning 30min, is put into dry for standby in baking oven.
(B) preparation of solder；
Ag powder, Cu powder and Ti powder that particle diameter is 500 mesh are taken, three kinds of simple substance powder are mixed by Ag-26.7Cu-4.5Ti in proportion,
And add 10% alcohol, mechanical ball mill is carried out in being put into planetary type ball-milling tank, Ball-milling Time is 40h, has reached brazing filler metal alloy
The effect of change.After ball milling terminates, by solder powder dried process, and 1 is pressed with paraffin and vaseline:After 1 ratio will be dried
Solder powder be made into Slurries, it is stand-by.
(C) Joining Technology；
Slurries solder obtained in above-mentioned (B) is painted on into the connection end of the C/C radiating fins Jing after (A) process and stainless steel tube
On face, after then be superimposed two connection sections, and sample is clamped by the fixture with design, and then lying low is put into vacuum brazing furnace
In.Then start to vacuumize, when in stove, vacuum reaches 10-2Start to warm up during Pa.Heating process is：First with 10～15 DEG C/
Min ramps are to 500 DEG C and are incubated 20min, then with the ramp of 6～12 DEG C/min to 900 DEG C, are incubated 10min, so
After cool to room temperature with the furnace, complete the connection of C/C radiating fins and stainless steel tube.
Embodiment two：
(A) pretreatment of connection surface；
Grinding and buffing process, and the ultrasonic wave in absolute ethyl alcohol will be carried out with C/C radiating fins and stainless steel tube connection surface
Cleaning 30min, is put into dry for standby in baking oven.
(B) preparation of solder；
Ag powder, Cu powder and Ti powder that particle diameter is 500 mesh are taken, three kinds of simple substance powder are mixed by Ag-26.7Cu-4.5Ti in proportion,
And add 10% alcohol, mechanical ball mill is carried out in being put into planetary type ball-milling tank, Ball-milling Time is 40h, has reached brazing filler metal alloy
The effect of change.After ball milling terminates, by solder powder dried process, and 1 is pressed with paraffin and vaseline:After 1 ratio will be dried
Solder powder be made into Slurries, it is stand-by.
(C) Joining Technology；
Slurries solder obtained in above-mentioned (B) is painted on into the connection end of the C/C radiating fins Jing after (A) process and stainless steel tube
On face, after then be superimposed two connection sections, and sample is clamped by the fixture with design, and then lying low is put into vacuum brazing furnace
In.Then start to vacuumize, when in stove, vacuum reaches 10-2Start to warm up during Pa.Heating process is：First with 10～15 DEG C/
Min ramps are to 500 DEG C and are incubated 20min, then with the ramp of 6～12 DEG C/min to 900 DEG C, are incubated 15min, so
After cool to room temperature with the furnace, complete the connection of C/C radiating fins and stainless steel tube.
Embodiment three：
(A) pretreatment of connection surface；
Grinding and buffing process will be carried out with C/C radiating fins and stainless steel tube connection surface, and be surpassed in absolute ethyl alcohol
Sound wave cleans 30min, is put into dry for standby in baking oven.
(B) preparation of solder；
Ag powder, Cu powder and Ti powder that particle diameter is 500 mesh are taken, three kinds of simple substance powder are mixed by Ag-26.7Cu-4.5Ti in proportion,
And add 10% alcohol, mechanical ball mill is carried out in being put into planetary type ball-milling tank, Ball-milling Time is 40h, has reached brazing filler metal alloy
The effect of change.After ball milling terminates, by solder powder dried process, and 1 is pressed with paraffin and vaseline:After 1 ratio will be dried
Solder powder be made into Slurries, it is stand-by.
(C) Joining Technology；
Slurries solder obtained in above-mentioned (B) is painted on into the connection end of the C/C radiating fins Jing after (A) process and stainless steel tube
On face, after then be superimposed two connection sections, and sample is clamped by the fixture with design, and then lying low is put into vacuum brazing furnace
In.Then start to vacuumize, when in stove, vacuum reaches 10-2Start to warm up during Pa.Heating process is：First with 10～15 DEG C/
Min ramps are to 500 DEG C and are incubated 20min, then with the ramp of 6～12 DEG C/min to 900 DEG C, are incubated 20min, so
After cool to room temperature with the furnace, complete the connection of C/C radiating fins and stainless steel tube.
The many connections to C/C radiating fins and stainless steel tube of Jing, different temperature retention time (10～20min) soldering connections experiments,
Good connection effect is obtained.
Claims (2)
1. a kind of C/C radiating fins and stainless method of attachment, it is characterised in that step is as follows：
The pretreatment of step 1, connection surface：The portion faces that C/C radiating fins are connected with stainless steel are polished and thrown
Light process, and dried in baking oven after ultrasonic wave cleaning again in absolute ethyl alcohol；
The preparation of step 2, solder：By Ag powder, Cu powder and Ti powder, Ag-26.7Cu-4.5Ti by weight percentage is by three kinds of simple substance
Powder is mixed, and the alcohol for adding, and carries out mechanical ball mill 40h, reach the effect of brazing filler metal alloy in being put into planetary type ball-milling tank
Really；After ball milling terminates, by solder powder dried process, and 1 is used:1 paraffin and vaseline mix dried solder powder
End is made into Slurries solder；The addition of the alcohol for solder 10%；
Step 3：On the end face being connected of the C/C radiating fins with stainless steel tube, then the Slurries solder of step 2 is painted on
Two connecting end surfaces are superimposed and are clamped, is lain low；Heating process is：With 10～15 DEG C/min
Ramp is to 500 DEG C and is incubated 20min, then with the ramp of 6～12 DEG C/min to 900 DEG C, is incubated 10～20min,
Then cool to room temperature with the furnace, carbide and solid solution are formed at linkage interface, complete C/C radiating fins with stainless steel tube
Connection.
2. C/C radiating fins and stainless method of attachment according to claim 1, it is characterised in that：Described Ag powder, Cu
The particle diameter of powder and Ti powder is 500 mesh.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611213498.5A CN106518128A (en) | 2016-12-26 | 2016-12-26 | C/C radiating fin and stainless steel connection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611213498.5A CN106518128A (en) | 2016-12-26 | 2016-12-26 | C/C radiating fin and stainless steel connection method |
Publications (1)
| Publication Number | Publication Date |
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| CN106518128A true CN106518128A (en) | 2017-03-22 |
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| CN201611213498.5A Pending CN106518128A (en) | 2016-12-26 | 2016-12-26 | C/C radiating fin and stainless steel connection method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114247947A (en) * | 2022-01-12 | 2022-03-29 | 湘潭大学 | Vacuum brazing connection method of C/C radiating fins and Ti tube |
| CN114892164A (en) * | 2022-05-19 | 2022-08-12 | 湘潭大学 | Preparation method of porous membrane on inner wall of stainless steel heat pipe |
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| CN114247947A (en) * | 2022-01-12 | 2022-03-29 | 湘潭大学 | Vacuum brazing connection method of C/C radiating fins and Ti tube |
| CN114892164A (en) * | 2022-05-19 | 2022-08-12 | 湘潭大学 | Preparation method of porous membrane on inner wall of stainless steel heat pipe |
| CN114892164B (en) * | 2022-05-19 | 2023-10-27 | 湘潭大学 | Preparation method of porous membrane on inner wall of stainless steel heat pipe |
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Application publication date: 20170322 |