CN108115308A - A kind of Al18B4O33Silver-bearing copper composite soldering of whisker reinforcement and preparation method thereof - Google Patents
A kind of Al18B4O33Silver-bearing copper composite soldering of whisker reinforcement and preparation method thereof Download PDFInfo
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- CN108115308A CN108115308A CN201810004388.0A CN201810004388A CN108115308A CN 108115308 A CN108115308 A CN 108115308A CN 201810004388 A CN201810004388 A CN 201810004388A CN 108115308 A CN108115308 A CN 108115308A
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- Prior art keywords
- whisker
- powder
- composite soldering
- bearing copper
- copper composite
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
- B23K35/3006—Ag as the principal constituent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/40—Making wire or rods for soldering or welding
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ceramic Products (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
Abstract
The invention discloses a kind of Al18B4O33Silver-bearing copper composite soldering of whisker reinforcement and preparation method thereof, the composite soldering by mass percentage, by 60% ~ 70% Ag powder, 20% ~ 30% Cu powder and 5% ~ 15% Al18B4O33Whisker is made.The preparation method comprises the following steps：1st, 60% ~ 70% Ag powder, 20% ~ 30% Cu powder and 5% ~ 15% Al are weighed by mass percentage18B4O33Whisker is mixed to get original solder powder；2nd, the original solder powder and abrading-ball obtained step 1 is placed in planetary type ball-milling tank, is vacuumized in backward ball grinder and is filled with argon gas, and with the rotating speed of 100 ~ 150r/min, 2 ~ 8h of ball milling obtains Al18B4O33The silver-bearing copper composite soldering of whisker reinforcement.The present invention improves the intensity of welding.
Description
Technical field
The invention belongs to welding technology fields, are related to the silver-bearing copper composite soldering and preparation method of a kind of whisker reinforcement, are used for
Ceramics/ceramics or ceramic/metal soldering.
Background technology
The advantages that ceramic material relies on its high temperature resistant, corrosion-resistant, wear-resisting, density is low, intensity is high is widely used in aviation boat
My god, the fields such as electronics, chemical industry, core.However, the brittleness of ceramic material itself is big, it is difficult to big and complicated component be made, thus need
It to link together by welding by its own or with metal, the component for meeting requirement is made.All multi-link
In method, soldering is the most simple and practical method for ceramic joining.However, between ceramics and base material metal and ceramic base material
Physical property difference between metal brazed seam is big, easily forms larger residual stress within a fitting.
There are two ways to the existing alleviation ceramic soldered joint residual stress using composite soldering：First, add into solder
Add particulates reinforcements, second is that in-situ preparation whisker；Both approaches can improve the linear expansion coefficient between brazed seam and ceramic base material
Difference, and then reduce connector residual stress.
But the shortcoming of first method is：Low linear expansion coefficient particle is added into metal solder especially to receive
When rice sized particles are as enhancing phase, add particle and agglomeration easily occurs, so as to weaken improvement；And particle enhances
Mutually the mechanical performance of itself can not find full expression, also limited to the restriction effect of surrounding metal plastic deformation.Second
The shortcoming of method is：When being strengthened by reaction in-situ generation whisker butt joint, since the holding time is shorter, generated
Whisker negligible amounts, size it is relatively small, distribution is constrained to a certain extent by the original distributing position of reactant particle, and
This kind of augmented form tends to rely on vacuum condition.
The content of the invention
For existing composite soldering there are the problem of, the technical problems to be solved by the invention are just to provide one kind
Al18B4O33The silver-bearing copper composite soldering of whisker reinforcement, the one-dimensional single crystal body that it is used to enhance phase is evenly distributed in brazed seam, and enhances
The quantity of phase, distribution, size and applicable elements are unrestricted, can improve the intensity of soldered fitting.The present invention also provides one kind
Al18B4O33The preparation method of the silver-bearing copper composite soldering of whisker reinforcement.
The present invention provides a kind of Al18B4O33The silver-bearing copper composite soldering of whisker reinforcement, by mass percentage, by 60% ~ 70%
Ag powder, 20% ~ 30% Cu powder and 5% ~ 15% Al18B4O33Whisker is made.
The present invention provides a kind of Al18B4O33The preparation method of the silver-bearing copper composite soldering of whisker reinforcement, comprises the following steps：
Step 1, the Ag powder for weighing 60% ~ 70% by mass percentage, 20% ~ 30% Cu powder and 5% ~ 15% Al18B4O33Whisker,
It is mixed to get original solder powder；
Step 2, the original solder powder that step 1 is obtained and abrading-ball are placed in planetary type ball-milling tank, vacuumize backward ball grinder
In be filled with argon gas, with the rotating speed of 100 ~ 150r/min, 2 ~ 8h of ball milling obtains Al18B4O33The silver-bearing copper composite soldering of whisker reinforcement.
The solution have the advantages that：
The Al of the present invention18B4O33In the silver-bearing copper composite soldering of whisker reinforcement, Ag and Cu are matrix element, Al18B4O33Whisker is straight
Connect the enhancing phase being added in solder powder.Wherein, Ag and Cu can form liquid phase by eutectic reaction under vacuum, fill out
It fills by the gap between weldering base material, remaining liquid phase solidifies the metallic matrix part to form brazed seam in cooling procedure after reaction；
Under air conditions, CuO is generated by oxidation with the rise Cu elements of temperature, Ag is by forming eutectic liquid phase with CuO and filling quilt
The gap between base material is welded, the metallic matrix part of brazed seam is formed after the Ag coolings in liquid phase.Al is selected in the present invention18B4O33Whisker
As enhancing phase, there are four advantages for tool：
1、Al18B4O33The building-up process of whisker be stacking procedure of the atom on high energy planes, whisker growth direction（Length side
To）Vertical with high energy planes, this allows for Al18B4O33In whisker surface atom, the higher atomicity ratio of energy is than nanometer
Grain is much smaller, and then greatly reduces the agglomeration tendency for enhancing phase in composite soldering preparation process, and gained composite soldering is uniform
Property is good；
2、Al18B4O33Whisker is monoclinic crystal structure, and self-defect is few, high mechanical strength, the compound brazed seam containing whisker formed
Can by the fractureing of whisker, deflect and absorb more energy, improve the bearing capacity of soldered fitting；
3rd, it is directly added into Al18B4O33Whisker can overcome the whisker reinforcement reported with respect to fabricated in situ condition as enhancing phase
（Such as vacuum condition）Dependence, the application range of composite soldering prepared by expansion；
4、Al18B4O33Whisker mature production technology, low in raw material price, thus the composite soldering mutually prepared by the use of it as enhancing
Advantage of lower cost.
Composite soldering using the present invention air at 1050 DEG C is brazed Al2O3When ceramic, uniformly divide in gained soldered fitting
Cloth substantial amounts of Al18B4O33Whisker reinforcement phase, enhancing phase size are significantly greater than the whisker of fabricated in situ, part Al18B4O33Whisker
It has occurred and that breakage phenomenon, shows Al18B4O33Whisker, which has, fully absorbs energy effect, soldered fitting Mean Shear intensity highest
Up to 61MPa, the soldered fitting shearing strength than using ag-cu solder air soldering aluminium oxide ceramics improves 154%, is silver-bearing copper
More than 2 times of solder.
Description of the drawings
The description of the drawings of the present invention is as follows：
Fig. 1 is the Al prepared by embodiment 118B4O33The microscopic appearance secondary electron scanning of the silver-bearing copper composite soldering of whisker reinforcement
Photo；
Fig. 2 is the microstructure morphology that embodiment 1 welds sheet material；
Fig. 3 is the Al of embodiment 12O3Ceramic soldered joint fracture photo.
Specific embodiment
The invention will be further described with reference to the accompanying drawings and examples：
Embodiment 1
The present embodiment by mass percentage, weighs 65% Ag powder, 25% Cu powder and 10% Al18B4O33Whisker is mixed to get
Original solder powder；
Above-mentioned original solder powder and abrading-ball are placed in planetary type ball-milling tank, vacuumizes in backward ball grinder and is filled with argon gas,
With the rotating speed of 120r/min, ball milling 4h obtains Al18B4O33The silver-bearing copper composite soldering of whisker reinforcement；Wherein ratio of grinding media to material 9:1st, filler
Than 45%.
Ratio of grinding media to material refers to used ceramic grinding ball quality during ball milling and configures solder mass ratio；Filler ratio refers to grind
The ratio between ball+solder powder total volume and ball milling tank volume.
Test 1：
To the Al of above-mentioned preparation18B4O33The microscopic appearance of the silver-bearing copper composite soldering of whisker reinforcement is scanned electron microscopic observation, from figure
1 as can be seen that whisker reinforcement distributed mutually is uniform in composite soldering, and not observing significantly enhances phase agglomeration.
Test 2：
Take the Al that two block sizes are 8mm × 8mm × 5mm2O3Ceramic base material is soldered surface 600#, 1000# skive
Piece polishes, and polishing surface then is polished to 1 μm of roughness, after being cleaned by ultrasonic in acetone soln, utilizes the present embodiment system
Standby composite soldering connects two pieces of base materials using tiling preset mode, is kept the temperature under 1050 DEG C of temperature of connection, air conditions
10min obtains sample 1.
Using diamond wire saw method, the sheet material that thickness is 2mm is cut on the sample 1 that is obtained from experiment 1, through 600#,
After 1000#, 1200# skive piece grinding and buffing, welding sheet material 1 is obtained.
Fig. 2 is the microstructure morphology of welding sheet material 1, figure it is seen that uniformly dividing in gained soldered fitting brazed seam
Cloth substantial amounts of Al18B4O33Whisker reinforcement phase, enhancing phase size are significantly greater than the whisker of fabricated in situ, part Al18B4O33Whisker
It has occurred and that breakage phenomenon, shows Al18B4O33Whisker can fully absorb energy.
Test 3：
Take three couples of Al that size is 15mm × 10mm × 5mm and 8mm × 8mm × 5mm2O3Ceramic base material, using the side of experiment 1
Method, then 3 samples are made, shearing test is carried out to this 3 samples, is averaged.
The Al of the present embodiment18B4O33The silver-bearing copper composite soldering air soldering Al of whisker reinforcement2O3Ceramic gained soldered fitting
Mean Shear intensity is 24 MPa using the shearing strength of soldered fitting obtained by ag-cu solder, than making similarly up to 61MPa
154% is improved with the soldered fitting shearing strength of ag-cu solder air soldering aluminium oxide ceramics.
Fig. 3 is the Al of the present embodiment2O3Ceramic soldered joint fracture photo, it is from fracture it is observed that substantial amounts of
Al18B4O33The socket that whisker and whisker leave after pulling away.
Thus, the Al of the present invention18B4O33The silver-bearing copper composite soldering of whisker reinforcement can realize the height to ceramic material
Quality is brazed, the Al in soldered fitting18B4O33On the one hand whisker reinforcement can mutually reduce the linear expansion coefficient of entire brazed seam, simultaneously
Also can by itself fracture, deflect and absorb additional energy, significantly improve ceramic soldered joint quality of connection.
Embodiment 2
The present embodiment by mass percentage, weighs 60% Ag powder, 30% Cu powder and 10% Al18B4O33Whisker is mixed to get
Original solder powder；
Above-mentioned original solder powder and abrading-ball are placed in planetary type ball-milling tank, vacuumizes in backward ball grinder and is filled with argon gas,
With the rotating speed of 100r/min, ball milling 2h obtains Al18B4O33The silver-bearing copper composite soldering of whisker reinforcement；Wherein ratio of grinding media to material 6:1st, filler
Than 40%.
It is tested by the test 3 of embodiment 1, the Al of the present embodiment18B4O33The silver-bearing copper composite soldering air of whisker reinforcement
It is brazed Al2O3Ceramic gained soldered fitting Mean Shear intensity is 45 MPa.
Embodiment 3
The present embodiment by mass percentage, weighs 70% Ag powder, 20% Cu powder and 10% Al18B4O33Whisker is mixed to get
Original solder powder；
Above-mentioned original solder powder and abrading-ball are placed in planetary type ball-milling tank, vacuumizes in backward ball grinder and is filled with argon gas,
With the rotating speed of 150r/min, ball milling 8h obtains Al18B4O33The silver-bearing copper composite soldering of whisker reinforcement；Wherein ratio of grinding media to material 12:1st, filler
Than 50%.
It is tested by the test 3 of embodiment 1, the Al of the present embodiment18B4O33The silver-bearing copper composite soldering air of whisker reinforcement
It is brazed Al2O3Ceramic gained soldered fitting Mean Shear intensity is 58 MPa.
Embodiment 4
The present embodiment by mass percentage, weighs 68.4% Ag powder, 26.6% Cu powder and 5% Al18B4O33Whisker mixes
To original solder powder；
Above-mentioned original solder powder and abrading-ball are placed in planetary type ball-milling tank, vacuumizes in backward ball grinder and is filled with argon gas,
With the rotating speed of 120r/min, ball milling 4h obtains Al18B4O33The silver-bearing copper composite soldering of whisker reinforcement；Wherein ratio of grinding media to material 9:1st, filler
Than 45%.
It is tested by the test 3 of embodiment 1, the Al of the present embodiment18B4O33The silver-bearing copper composite soldering air of whisker reinforcement
It is brazed Al2O3Ceramic gained soldered fitting Mean Shear intensity is 47 MPa.
Embodiment 5
The present embodiment by mass percentage, weighs 61.2% Ag powder, 23.8% Cu powder and 15% Al18B4O33Whisker, mixing
Obtain original solder powder；
Above-mentioned original solder powder and abrading-ball are placed in planetary type ball-milling tank, vacuumizes in backward ball grinder and is filled with argon gas,
With the rotating speed of 120r/min, ball milling 4h obtains Al18B4O33The silver-bearing copper composite soldering of whisker reinforcement；Wherein ratio of grinding media to material 9:1st, filler
Than 45%.
It is tested by the test 3 of embodiment 1, the Al of the present embodiment18B4O33The silver-bearing copper composite soldering air of whisker reinforcement
It is brazed Al2O3Ceramic gained soldered fitting Mean Shear intensity is 32 Mpa.
Above-mentioned Ag powder, Cu powder and Al18B4O33The quality purity of whisker powder is all 99% ~ 99.9%.
Claims (2)
1. a kind of Al18B4O33The silver-bearing copper composite soldering of whisker reinforcement, it is characterized in that：By mass percentage, by 60% ~ 70% Ag
Powder, 20% ~ 30% Cu powder and 5% ~ 15% Al18B4O33Whisker is made.
2. a kind of Al described in claim 118B4O33The preparation method of the silver-bearing copper composite soldering of whisker reinforcement, it is characterized in that, including
Following steps：
Step 1, the Ag powder for weighing 60% ~ 70% by mass percentage, 20% ~ 30% Cu powder and 5% ~ 15% Al18B4O33Whisker mixes
Conjunction obtains original solder powder；
Step 2, the original solder powder that step 1 is obtained and abrading-ball are placed in planetary type ball-milling tank, vacuumize backward ball grinder
In be filled with argon gas, with the rotating speed of 100 ~ 150r/min, 2 ~ 8h of ball milling obtains Al18B4O33The silver-bearing copper composite soldering of whisker reinforcement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810004388.0A CN108115308B (en) | 2018-01-03 | 2018-01-03 | Al (aluminum)18B4O33Whisker reinforced silver-copper composite solder and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810004388.0A CN108115308B (en) | 2018-01-03 | 2018-01-03 | Al (aluminum)18B4O33Whisker reinforced silver-copper composite solder and preparation method thereof |
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| CN108115308A true CN108115308A (en) | 2018-06-05 |
| CN108115308B CN108115308B (en) | 2020-06-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113880426A (en) * | 2021-11-11 | 2022-01-04 | 广东省科学院新材料研究所 | Microcrystalline glass brazing filler metal for ceramic connection, preparation method thereof and ceramic connection method |
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| CN1513812A (en) * | 2003-06-26 | 2004-07-21 | 哈尔滨工业大学 | Ceramic particle reinforced composite brazing alloy used for ceramic soldering |
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| CN113880426A (en) * | 2021-11-11 | 2022-01-04 | 广东省科学院新材料研究所 | Microcrystalline glass brazing filler metal for ceramic connection, preparation method thereof and ceramic connection method |
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| CN108115308B (en) | 2020-06-19 |
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