CN106736030A - A kind of solder and its application process in welding C/SiC composites and metal - Google Patents
A kind of solder and its application process in welding C/SiC composites and metal Download PDFInfo
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- CN106736030A CN106736030A CN201611218090.7A CN201611218090A CN106736030A CN 106736030 A CN106736030 A CN 106736030A CN 201611218090 A CN201611218090 A CN 201611218090A CN 106736030 A CN106736030 A CN 106736030A
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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
- B23K35/302—Cu as the principal constituent
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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
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/008—Soldering within a furnace
-
- 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
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/20—Preliminary treatment of work or areas to be soldered, e.g. in respect of a galvanic coating
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- Pressure Welding/Diffusion-Bonding (AREA)
- Ceramic Products (AREA)
Abstract
The present invention relates to the connection solder and the application process of the solder of a kind of foreign material.The solder；By mass percentage, including following components：Cu Cr Zr Ni (Al) (RE) alloyed powder 80~90%, Ti powder 10~20%；Cu Cr Zr Ni (Al) (RE) alloyed powder, by percentage to the quality including following components：Cr 0.2 1.5%；Zr 0.1 0.6%；Ni 10 40%；Balance of Cu and inevitable impurity.Its technique for applying is：After the suitable C/SiC composites of surface roughness and metal to be welded are activated, first C/SiC composites are embedded in solder, obtain coating metal and penetrate into the C/SiC composites of metal；Then again its with by metal-clad to be welded, under stress, soldering obtains finished product.
Description
Technical field
The present invention relates to the connection solder and the application process of the solder of a kind of foreign material, specially connect C/SiC and answer
The application process of the solder and the solder of condensation material and metal.
Background technology
C/SiC composite densities are 2.0~2.5g/cm3, only the 1/3~1/4 of high temperature alloy, tungsten alloy 1/9~
1/10, the characteristics of fracture with high temperature resistant, anti-thermal shock, anti-yaw damper and metalloid, can meet less than 1650 DEG C long-lives, 2000 DEG C
Following finite lifetime, the use requirement in less than 3000 DEG C instantaneous life-spans.Used as a kind of new material, C/SiC composites are abundant
The advantage of carbon fiber and SiC matrix is combined, the advantages of show low-density, high intensity, high temperature resistant, resistance to ablation, antiscour,
Aero-Space, weaponry and other industrial circles are with a wide range of applications.C/SiC composites have as brake material
Have the advantages that density is low, thermal-shock resistance strong, brake is steady, thermal capacity is big, good in oxidation resistance, wear weight loss rate it is small, Er Qieke
The deficiencies such as the moisture absorption of carbon disk big, hygrometric state coefficient of friction low, confficient of static friction is low, bad adaptability are taken.
But the extensive use of C/SiC composites necessarily involves C/SiC composites itself and special with other materials
It is not the connectivity problem of metal material.Because ceramic, C/SiC composite widely different in physics, chemical property with metal
Angle of wetting with most metals is more than 90 °, that is, belong to complete nonwetting system, therefore cannot realize direct combination.And because
It is the greatest differences of both thermal coefficient of expansions, causes coupling part very big thermal stress occur and ftracture.At present, conventional solution is done
Method is that intermediate layer is built between ceramics and metal, improves both wetabilitys, and alleviates the thermal stress of connecting portion.
Chinese patent CN 101462890A disclose the connection method of a kind of C/SiC composites and titanium alloy, the method
The paste solder that Cu powder, Ti powder and graphite powder are mixed, connects C/SiC composites and titanium alloy, and the shearing of joint is strong
Degree is up to 126MPa.The B of Chinese patent CN 102924109 disclose a kind of CfThe based composites connection method of/SiC ceramic,
The connection method selects Ti-Zr-Be alloys as connecting material, in the case where stressed vacuum condition is not applied, 950 DEG C~1050 DEG C
5~120min of insulation, by each element in connecting material and mother metal CfFiber C and SiC bases in/SiC ceramic based composites
Precursor reactant, generation high-melting-point TiC, ZrC, Ti-Si-C, Be2The Carbide Phases such as C, form and are similar to particulate reinforced metal-based composite wood
The articulamentum of material, reduces the thermal coefficient of expansion of articulamentum, alleviates joint thermal stress, and the shear strength of joint is up to
125.14MPa, and still have shear strength higher at 800 DEG C.
Japanese plum outstanding person etc. use Zr/Ta composite interlayers, by vacuum hotpressing diffusion welding (DW) Joining Technology connect C/SiC and
GH128 nickel base superalloys [such as Japanese plum outstanding person Rare Metals Materials and engineering, 2002,31 (supplementary issues 1)：393-396], joint
Bonding strength is 110.9MPa.Li Jinglong et al. connects C/SiC composite woods using Ti-Cu bianry alloys paper tinsel as intermediate layer material
Material and metal Nb [Li jinglong, et al.Scripta Materialia, 2006,55:151-154], the shearing of joint is strong
Degree is only 34.1MPa.
The content of the invention
At present, due to swollen by heat between Interlayer Alloy and Interlayer Alloy and mother metal (C/SiC composites and metal)
Swollen coefficient is mismatched, the residual stress of generation, causes the bonding strength of C/SiC composites and metal to improve limited.To overcome
This problem, the present invention proposes a kind of solder and its application process in welding C/SiC composites and metal.
A kind of solder of the present invention；By mass percentage, including following components：
Cu-Cr-Zr-Ni- (Al)-(RE) alloyed powder 80~90%, Ti powder 10~20%；
The Cu-Cr-Zr-Ni- (Al)-(RE) alloyed powder, by percentage to the quality including following components：
Cr 0.2-1.5%, preferably 0.5-1.5%, more preferably 1.0-1.2%；
Zr 0.1-0.6%, preferably 0.1-0.4%；
Ni 10-40%；It is preferred that 15-40%, more preferably 30-40% or 15%.
Balance of Cu and inevitable impurity.
A kind of solder of the present invention；The Cu-Cr-Zr-Ni- (Al)-(RE) alloyed powder, by percentage to the quality, also includes
Following components：
Al 0-10%, preferably 3-7%；
RE 0-0.3%, preferably 0.05-0.23%.
A kind of solder of the present invention；The granularity of the Cu-Cr-Zr-Ni- (Al)-(RE) alloyed powder is 30~50 μm, Ti powder
Granularity is 20~40 μm.
A kind of solder of the present invention；Described RE is selected from least one in La, Ce, Pr, Y, Er, Yb, Sc element.
A kind of application process of the solder of the present invention in welding C/SiC composites and metal；Comprise the steps：
Step 1
It is 1.6~0.4 by the flat rear sandblasting of the facing cut to be connected of C/SiC composites and metal to be welded to surface roughness Ra
μm；
Step 2
The impurity of the joint face of C/SiC composites and metal to be welded after removal sandblasting；Material after sandblasting is put into
The K of 10~20g/100mL2ZrF6In solution, 80~120 DEG C of insulations；
Step 3
Cu-Cr-Zr-Ni- (Al)-(RE) alloyed powder and Ti powder are carried out dry-mixed to well mixed, obtain mixed powder；
Step 4
The C/SiC composites that step 2 is processed are embedded in the mixed powder of step 3, vacuum-sintering, obtain coating metal
Change and penetrate into the C/SiC composites of metal；
Step 5
The facing cut to be connected of the C/SiC composites of the coating metal for respectively being prepared by step 4 puts down rear sandblasting to surface
Roughness Ra is 1.6~0.4 μm；
Step 6
The C/SiC composites that step 5 is obtained and the face to be connected of metal to be welded are fitted and along the Vertical Square of binding face
To the pressure for applying 20~40MPa, release furnace cooling after vacuum hotpressing obtains the connector of C/SiC composites and metal.
Soaking time in step 2 is 2~3h.
A kind of application process of the solder of the present invention in welding C/SiC composites and metal；In step 4, vacuum-sintering
Technological parameter is：Vacuum in vacuum hotpressing stove burner hearth is less than or equal to 10-2Pa；1100~1200 DEG C of sintering temperature, during insulation
Between 0.5~2h, furnace pressure control in 15~20MPa；Heating rate is 10~15 DEG C/min with rate of temperature fall, and sintering is completed
Release afterwards cools to room temperature with the furnace.
A kind of application process of the solder of the present invention in welding C/SiC composites and metal；In step 6, vacuum-sintering
Technological parameter is：Vacuum is no more than 5.0 × 10 in hot pressing furnace-3Pa, is heated up with the speed of 5~10 DEG C/min, and soaking time is 5
~20min, is then lowered the temperature with the speed of 5~10 DEG C/min, and last release obtains finished product.
A kind of application process of the solder of the present invention in welding C/SiC composites and metal；Described metal to be welded choosing
At least one from titanium alloy, copper alloy, nickel alloy, aluminium alloy, aluminum matrix composite.
A kind of application process of the solder of the present invention in welding C/SiC composites and metal；When metal to be welded is 7055
During aluminium alloy, the shear strength at room temperature of gained finished product is more than or equal to 139MPa.
A kind of application process of the solder of the present invention in welding C/SiC composites and metal；When metal to be welded is SiC
During grain reinforced aluminum matrix composites, the shear strength at room temperature of gained finished product is more than or equal to 187MPa；The SiC particulate strengthens aluminium
Based composites include following components with mass percent：SiC 15%, balance of alloy matrix aluminum；The alloy matrix aluminum is
2024 aluminium alloys；
A kind of application process of the solder of the present invention in welding C/SiC composites and metal；When metal to be welded for titanium is closed
During golden TC4, the shear strength at room temperature of gained finished product is more than or equal to 142MPa.
A kind of application process of the solder of the present invention in welding C/SiC composites and metal；When metal to be welded for copper is closed
During golden H60, the shear strength at room temperature of gained finished product is more than or equal to 195MPa.
A kind of application process of the solder of the present invention in welding C/SiC composites and metal；When metal to be welded for nickel is closed
During golden inconel 600, the shear strength at room temperature of gained finished product is more than or equal to 216MPa.
The present invention uses K2ZrF6Solution processes SiC and metal surface, significantly improves SiC and intermetallic wetability, reduces
Interface energy between the two；Using pyrolytic carbon and free Si the reaction generation in active element Ti and C/SiC matrices of composite materials
TiC、Ti5Si3Deng compound particle, using TiC, Ti5Si3With the good wetability of Cu, obtain surface and be permeated with part metals
C/SiC composites.
Using Cu-Cr-Zr-Ni- (Al)-(RE) alloy, contained constituent element reacts with C/SiC composites and generates in alloy
High-melting-point ZrC, Cr3Si、Cr3C2、Si3Ti2Zr3、Ni3The compound phases such as Si, improve the resistance to elevated temperatures of articulamentum, and alleviating heat should
Power.Additionally, Cr, Zr, Ni etc. are copper-based external except being present in the second phase form, intrinsic silicon can be also solid-solution in, play precipitation
The effect of reinforcing, improves the ability that bonding pad absorbs thermal stress.The addition of appropriate rare earth element, in addition to can be with crystal grain thinning,
Processing characteristics can also be improved and corrosion-proof wear is improved, the C/SiC composites/C/SiC of very strong interface cohesion is formed
The stratiform transient response layer of composite+TiC+ copper solid solutions/copper alloy.
Because the surface of C/SiC composites and surface part are metallized, therefore solve its interface profit with metal
Moist problem, then the connection of C/SiC composites and metal is realized by hot pressing, can effectively alleviate coefficient of thermal expansion differences between mother metal
Thermal stress caused by different, adding mother metal joint face has all carried out sandblasting pretreatment, and the coarse connection for causing joint on surface is strong
Degree is significantly improved, and shearing strength of joint is higher.
Principle and advantage：
(1) K is used2ZrF6Solution processes SiC and metal surface, C/SiC surfaces is formed ZrSi2Deng compound, close aluminium
The metal surfaces such as gold form Al3The compounds such as Zr, and dissolve oxide layer SiO2And Al2O3, significantly improve SiC with it is intermetallic
Wetability, reduces interface energy between the two.
(2) metal is poor with the wetability of C/SiC, after adding active element Ti, under high temperature in molten Ti and C/SiC matrixes
Pyrolytic carbon and free Si reaction generations TiC, Ti5Si3Deng compound particle.Cu alloys rely on and TiC, Ti5Si3Good wetting
Property, in TiC, Ti5Si3Surface spreading is opened, and by chemisorbed, solid/liquid interfaces energy is reduced, so as to reduce liquid NiAl alloy epitaxy
Interface stress, causes molten copper alloy drop to penetrate into C/SiC composite inners by hole and hole capillary force
Hole, improves penetrating power of the copper alloy liquid to C/SiC matrixes, during copper alloy melt infiltered into the hole of C/SiC composites.
(3) contained constituent element generates high-melting-point with the reaction of C/SiC composites in Cu-Cr-Zr-Ni- (Al)-(RE) alloy
ZrC、Cr3Si、Cr3C2、Si3Ti2Zr3、Ni3The compound phases such as Si, improve the resistance to elevated temperatures of articulamentum, relief of thermal stress.This
Outward, Cr, Zr, Ni etc. are copper-based external except being present in the second phase form, can also be solid-solution in intrinsic silicon, play precipitation strength
Effect, improves the ability that bonding pad absorbs thermal stress.The addition of appropriate rare earth element, in addition to can be with crystal grain thinning, can be with
Improve processing characteristics and improve corrosion-proof wear.
(4) residual stress for being produced during Cu-Cr-Zr-Ni- (Al)-(RE) alloy infiltration C/SiC composite inners is small,
And form the stratiform mistake of the very strong C/SiC composites of interface cohesion/C/SiC composites+TiC+ copper solid solutions/copper alloy
Cross conversion zone.
(5) because the surface of C/SiC composites and surface part are metallized, therefore its interface with metal is solved
Problem of Wettability, then the connection of C/SiC composites and metal is realized by hot pressing, can effectively alleviate thermal coefficient of expansion between mother metal
Thermal stress caused by difference, adding mother metal joint face has all carried out sandblasting pretreatment, the coarse connection for causing joint on surface
Intensity is significantly improved, and shear strength brings up to more than 139MPa.
(6) due to employing Cu-Cr-Zr-Ni- (Al)-(RE) alloyed powder in solder, in Ni contents high (especially greater than
Equal to 30%) when, Ni can be obviously improved gained welding product under the synergy of other appropriate amount of components and preparation technology
Shear strength.
Specific embodiment：
The invention provides solder and the connection method of a kind of C/SiC composites and metal, below by specific reality
Example is applied the present invention is explained further.
Embodiment 1
The connection of C/SiC composites and 7055 aluminium alloys：
Solder used in the present embodiment 1, following components are included with mass percent：
Cu-Cr-Zr-Ni-Al-La alloyed powders 85%, Ti powder 15%.The granularity of Cu-Cr-Zr-Ni-Al-La alloyed powders is
30 μm, the granularity of Ti powder is 30 μm.
Cu-Cr-Zr-Ni-Al-La alloyed powders, following components are included with mass percent：Cr 0.5%, Zr 0.3%, Ni
10%, Al 3%, La 0.05%, balance of Cu and inevitable impurity.
Sandblasting to surface roughness Ra is after the facing cut to be connected of C/SiC composites and 7055 aluminium alloys is flat first
1.6~0.4 μm, after the impurity of the joint face of C/SiC composites and metal after removal sandblasting, put it into 10g/100mL
K2ZrF6In solution, 80 DEG C of insulation 3h.Afterwards, Cu-Cr-Zr-Ni-Al-La alloyed powders and Ti powder are carried out dry-mixed equal to mixing
It is even, obtain mixed powder.Again by K2ZrF6The C/SiC composites of solution treatment carry out vacuum-sintering, vacuum in being embedded in mixed powder
Spend is 10-2Pa, 1100 DEG C of sintering temperature, soaking time 2h, furnace pressure is 20MPa, and heating rate is 10 with rate of temperature fall
~15 DEG C/min, release cools to room temperature with the furnace after the completion of sintering, and the facing cut to be connected of the modified C/SiC composites of acquisition is put down
Sandblasting afterwards, is 1.6~0.4 μm to surface roughness Ra.Finally, by the modified C/SiC composites of blasting treatment and 7055 aluminium
The laminating of alloy face to be connected, and vertical direction along binding face applies the pressure of 40MPa, vacuum hotpressing, vacuum in hot pressing furnace
It is 5.0 × 10-3Pa, is heated up with the speed of 5~10 DEG C/min, and hot pressing temperature is 450 DEG C, and soaking time is 5min, then with 5~
The speed cooling of 10 DEG C/min, last release obtains the connector of C/SiC composites and 7055 aluminium alloys.
C/SiC composites and 7055 aluminum alloy connectors to obtaining carry out performance test, its shear strength at room temperature
It is 139MPa.
Embodiment 2
The connection of C/SiC composites and SiC particulate reinforced aluminum matrix composites：
Solder used in the present embodiment 2, following components are included with mass percent：
Cu-Cr-Zr-Ni-Al-Sc alloyed powders 88%, Ti powder 12%.The granularity of Cu-Cr-Zr-Ni-Al-Sc alloyed powders is
40 μm, the granularity of Ti powder is 35 μm.
Cu-Cr-Zr-Ni-Al-Sc alloyed powders, following components are included with mass percent：Cr 1.0%, Zr 0.25%,
Ni 15%, Al 5%, Sc 0.20%, balance of Cu and inevitable impurity.
SiC particulate reinforced aluminum matrix composites include following components with mass percent：SiC particulate mass percent is
15%, alloy matrix aluminum is 2024 aluminium alloys.
The facing cut to be connected of C/SiC composites and SiC particulate reinforced aluminum matrix composites is being put down into rear sandblasting extremely first
Surface roughness Ra is 1.6~0.4 μm, the C/SiC composites and SiC particulate reinforced aluminum matrix composites after removal sandblasting
After the impurity of joint face, the K of 15g/100mL is put it into2ZrF6In solution, 90 DEG C of insulation 2h.Afterwards, by Cu-Cr-Zr-Ni-
Al-Sc alloyed powders and Ti powder carry out dry-mixed to well mixed, obtain mixed powder.Again by K2ZrF6The C/SiC composite woods of solution treatment
Material carries out vacuum-sintering in being embedded in mixed powder, and vacuum is 10-2Pa, 1150 DEG C of sintering temperature, soaking time 1.5h, stove internal pressure
Power is 20MPa, and heating rate is 10~15 DEG C/min with rate of temperature fall, and release cools to room temperature with the furnace after the completion of sintering, obtains
Sandblasting after the facing cut to be connected of the modified C/SiC composites for obtaining is flat, is 1.6~0.4 μm to surface roughness Ra.Finally, will
Modified C/SiC composites and SiC particulate reinforced aluminum matrix composites the face laminating to be connected of blasting treatment, and along binding face
The pressure of vertical direction applying 40MPa, vacuum hotpressing, vacuum is 5.0 × 10 in hot pressing furnace-3Pa, with the speed of 5~10 DEG C/min
Rate heats up, and hot pressing temperature is 480 DEG C, and soaking time is 20min, is then lowered the temperature with the speed of 5~10 DEG C/min, last release,
Obtain the connector of C/SiC composites and SiC particulate reinforced aluminum matrix composites.
C/SiC composites and SiC particulate reinforced aluminum matrix composites connector to obtaining carry out performance test, its room
Warm down cut intensity is 187MPa.
Embodiment 3
The connection of C/SiC composites and titanium alloy TC 4：
Solder used in the present embodiment 3, following components are included with mass percent：
Cu-Cr-Zr-Ni-Al-Yb alloyed powders 90%, Ti powder 10%.The granularity of Cu-Cr-Zr-Ni-Al-Yb alloyed powders is
40 μm, the granularity of Ti powder is 30 μm.
Cu-Cr-Zr-Ni-Al-Yb alloyed powders, following components are included with mass percent：Cr 1.5%, Zr 0.3%, Ni
20%, Al 7%, Yb 0.18%, balance of Cu and inevitable impurity.
Sandblasting to surface roughness Ra is after the facing cut to be connected of C/SiC composites and titanium alloy TC 4 is flat first
1.6~0.4 μm, after the impurity of the joint face of C/SiC composites and titanium alloy TC 4 after removal sandblasting, put it into 15g/
The K of 100mL2ZrF6In solution, 90 DEG C of insulation 1.5h.Afterwards, Cu-Cr-Zr-Ni-Al-Yb alloyed powders and Ti powder are carried out dry-mixed
To well mixed, mixed powder is obtained.Again by K2ZrF6The C/SiC composites of solution treatment carry out vacuum in being embedded in mixed powder
Sintering, vacuum is 10-2Pa, 1120 DEG C of sintering temperature, soaking time 1h, furnace pressure is 20MPa, heating rate and cooling speed
Rate is 10~15 DEG C/min, and release cools to room temperature, the company for the treatment of of the modified C/SiC composites of acquisition with the furnace after the completion of sintering
Sandblasting after junction milling is flat, is 1.6~0.4 μm to surface roughness Ra.Finally, by the modified C/SiC composites of blasting treatment
Apply the pressure of 40MPa, vacuum hotpressing, in hot pressing furnace with the laminating of titanium alloy TC 4 face to be connected, and vertical direction along binding face
Vacuum is 5.0 × 10-3Pa, is heated up with the speed of 5~10 DEG C/min, and hot pressing temperature is 1080 DEG C, and soaking time is 15min,
Then lowered the temperature with the speed of 5~10 DEG C/min, last release obtains the connector of C/SiC composites and titanium alloy TC 4.
To obtain C/SiC composites and titanium alloy TC 4 connector carry out performance test, its at room temperature shear strength be
142MPa。
Embodiment 4
The connection of C/SiC composites and copper alloy H60：
Solder used in the present embodiment 4, following components are included with mass percent：
Cu-Cr-Zr-Ni-Al-Er alloyed powders 85%, Ti powder 15%.The granularity of Cu-Cr-Zr-Ni-Al-Er alloyed powders is
50 μm, the granularity of Ti powder is 20 μm.
Cu-Cr-Zr-Ni-Al-Er alloyed powders, following components are included with mass percent：Cr 1.2%, Zr 0.4%, Ni
30%, Al 6%, Er 0.23%, balance of Cu and inevitable impurity.
Sandblasting to surface roughness Ra is after the facing cut to be connected of C/SiC composites and copper alloy H60 is flat first
1.6~0.4 μm, after the impurity of the joint face of C/SiC composites and copper alloy H60 after removal sandblasting, put it into 20g/
The K of 100mL2ZrF6In solution, 100 DEG C of insulation 3h.Afterwards, by Cu-Cr-Zr-Ni-Al-Er alloyed powders and Ti powder carry out it is dry-mixed extremely
It is well mixed, obtain mixed powder.Again by K2ZrF6The C/SiC composites of solution treatment carry out vacuum burning in being embedded in mixed powder
Knot, vacuum is 10-2Pa, 1120 DEG C of sintering temperature, soaking time 1h, furnace pressure is 15MPa, heating rate and rate of temperature fall
Be 10~15 DEG C/min, release cools to room temperature with the furnace after the completion of sintering, the modified C/SiC composites of acquisition it is to be connected
Sandblasting after facing cut is flat, is 1.6~0.4 μm to surface roughness Ra.Finally, by the modified C/SiC composites of blasting treatment and
The laminating of copper alloy H60 faces to be connected, and vertical direction along binding face applies the pressure of 30MPa, vacuum hotpressing is true in hot pressing furnace
Reciprocal of duty cycle is 5.0 × 10-3Pa, is heated up with the speed of 5~10 DEG C/min, and hot pressing temperature is 980 DEG C, and soaking time is 15min, then
Lowered the temperature with the speed of 5~10 DEG C/min, last release obtains the connector of C/SiC composites and copper alloy H60.
To obtain C/SiC composites and copper alloy H60 connectors carry out performance test, its at room temperature shear strength be
195MPa。
Embodiment 5
The connection of C/SiC composites and nickel alloy inconel 600：
Solder used in the present embodiment 5, following components are included with mass percent：
Cu-Cr-Zr-Ni alloyed powders 80%, Ti powder 20%.The granularity of Cu-Cr-Zr-Ni- (Al)-(RE) alloyed powder is 40 μ
The granularity of m, Ti powder is 25 μm.
Cu-Cr-Zr-Ni alloyed powders, following components are included with mass percent：Cr 1.2%, Zr 0.1%, Ni 40%,
Balance of Cu and inevitable impurity.
Sandblasting is thick to surface after the facing cut to be connected of C/SiC composites and nickel alloy inconel 600 is flat first
Rugosity Ra is 1.6~0.4 μm, the impurity of the joint face of C/SiC composites and nickel alloy inconel 600 after removal sandblasting
Afterwards, the K of 18g/100mL is put it into2ZrF6In solution, 100 DEG C of insulation 2h.Afterwards, by Cu-Cr-Zr-Ni alloyed powders and Ti powder
Carry out dry-mixed to well mixed, obtain mixed powder.Again by K2ZrF6The C/SiC composites of solution treatment are embedded in mixed powder
Vacuum-sintering is carried out, vacuum is 10-2Pa, 1200 DEG C of sintering temperature, soaking time 1h, furnace pressure is 15MPa, heating rate
10~15 DEG C/min is with rate of temperature fall, release cools to room temperature, the modified C/SiC composite woods of acquisition with the furnace after the completion of sintering
Sandblasting after the facing cut to be connected of material is flat, is 1.6~0.4 μm to surface roughness Ra.Finally, by the modified C/SiC of blasting treatment
Composite and the faces to be connected of nickel alloy inconel 600 are fitted, and vertical direction along binding face applies the pressure of 30MPa,
Vacuum hotpressing, vacuum is 5.0 × 10 in hot pressing furnace-3Pa, is heated up with the speed of 5~10 DEG C/min, and hot pressing temperature is 1100 DEG C,
Soaking time is 15min, is then lowered the temperature with the speed of 5~10 DEG C/min, last release, obtains C/SiC composites and nickel is closed
The connector of golden inconel 600.
C/SiC composites and the connectors of nickel alloy inconel 600 to obtaining carry out performance test, and it cuts at room temperature
Shearing stress is 216MPa.
Comparative example 1
Other conditions parameter is completely the same with embodiment 5；Difference is：Cu-Cr-Zr-Ni alloyed powders, with quality hundred
Divide than including following components：Cr 1.2%, Zr 0.1%, Ni 3%, balance of Cu and inevitable impurity.Gained finished product is carried out
Performance test, its at room temperature shear strength be 85MPa.
Comparative example 2
Other conditions parameter is completely the same with embodiment 5；Difference is：
Sandblasting is thick to surface after the facing cut to be connected of C/SiC composites and nickel alloy inconel 600 is flat first
Rugosity Ra is 1.6~0.4 μm, the impurity of the joint face of C/SiC composites and nickel alloy inconel 600 after removal sandblasting
Afterwards, the K of 18g/100mL is put it into2ZrF6In solution, 100 DEG C of insulation 2h.Afterwards, by Cu-Cr-Zr-Ni alloyed powders and Ti powder
Carry out dry-mixed to well mixed, obtain mixed powder.Again by K2ZrF6The C/SiC composites of solution treatment are embedded in mixed powder
Vacuum-sintering is carried out, vacuum is 10-2Pa, 900 DEG C of sintering temperature, soaking time 1h, furnace pressure is 5MPa, heating rate with
Rate of temperature fall is 50 DEG C/min, release cools to room temperature with the furnace after the completion of sintering, and the modified C/SiC composites of acquisition are treated
Sandblasting after connection facing cut is flat, is 3 μm to surface roughness Ra.Finally, the modified C/SiC composites and nickel of blasting treatment are closed
The faces to be connected of golden inconel 600 fit, and along binding face vertical direction apply 50MPa pressure, vacuum hotpressing, hot pressing furnace
Interior vacuum is 5.0 × 10-3Pa, is heated up with the speed of 50 DEG C/min, and hot pressing temperature is 900 DEG C, and soaking time is 15min, so
Lowered the temperature with the speed of 50 DEG C/min afterwards, last release obtains the connector of C/SiC composites and nickel alloy inconel 600.
Gained finished product carries out performance test, its at room temperature shear strength be 112MPa.
When can be seen that solder designed by the present invention by comparative example 1,2 and embodiment and coordinating appropriate technique to use,
Unexpected effect is reached.
Claims (10)
1. a kind of solder；It is characterized in that；By mass percentage, including following components：
Cu-Cr-Zr-Ni- (Al)-(RE) alloyed powder 80~90%, Ti powder 10~20%；
The Cu-Cr-Zr-Ni- (Al)-(RE) alloyed powder, by percentage to the quality including following components：
Cr 0.2-1.5%；
Zr 0.1-0.6%；
Ni 10-40%；
Balance of Cu and inevitable impurity.
2. a kind of solder according to claim 1；It is characterized in that：
The Cu-Cr-Zr-Ni- (Al)-(RE) alloyed powder, by percentage to the quality including following components：
Cr 0.5-1.5%；
Zr 0.1-0.4%；
Ni 15-40%；
Balance of Cu and inevitable impurity.
3. a kind of solder according to claim 2；It is characterized in that：
The Cu-Cr-Zr-Ni- (Al)-(RE) alloyed powder, by percentage to the quality including following components：
Cr 1.0-1.2%；
Zr 0.1-0.4%；
Ni 30-40% or 15%；
Balance of Cu and inevitable impurity.
4. a kind of solder according to claim 1；It is characterized in that：
The Cu-Cr-Zr-Ni- (Al)-(RE) alloyed powder, by percentage to the quality, also including following components：
Al 0-10%；
RE 0-0.3%.
5. a kind of solder according to claim 1；It is characterized in that：The Cu-Cr-Zr-Ni- (Al)-(RE) alloyed powder
Granularity be 30~50 μm, the granularity of Ti powder is 20~40 μm.
6. a kind of solder according to claim 4；It is characterized in that：Described RE is selected from La, Ce, Pr, Y, Er, Yb, Sc
At least one in element.
7. a kind of solder as claimed in any one of claims 1 to 6 welding C/SiC composites and metal in application process；
It is characterized in that comprising the steps：
Step 1
It it is 1.6~0.4 μm by the flat rear sandblasting of the facing cut to be connected of C/SiC composites and metal to be welded to surface roughness Ra；
Step 2
The impurity of the joint face of C/SiC composites and metal to be welded after removal sandblasting；Material after sandblasting is put into 10~
The K of 20g/100mL2ZrF6In solution, 80~120 DEG C of insulations；
Step 3
Cu-Cr-Zr-Ni- (Al)-(RE) alloyed powder and Ti powder are carried out dry-mixed to well mixed, obtain mixed powder；
Step 4
The C/SiC composites that step 2 is processed are embedded in the mixed powder of step 3, vacuum-sintering, obtain coating metal and
Penetrate into the C/SiC composites of metal；
Step 5
The facing cut to be connected of the C/SiC composites of the coating metal for respectively being prepared by step 4 puts down rear sandblasting to rough surface
Degree Ra is 1.6~0.4 μm；
Step 6
The C/SiC composites that step 5 is obtained and the face to be connected of metal to be welded are fitted and the vertical direction along binding face is applied
Plus 20~pressure of 40MPa, release furnace cooling after vacuum hotpressing obtains the connector of C/SiC composites and metal.
8. a kind of solder according to claim 7 welding C/SiC composites and metal in application process；Its feature
It is：
In step 4, vacuum sintering technology parameter is：Vacuum in vacuum hotpressing stove burner hearth is less than or equal to 10-2Pa；Sintering temperature
1100~1200 DEG C, 0.5~2h of soaking time, furnace pressure is controlled in 15~20MPa；Heating rate is 10 with rate of temperature fall
~15 DEG C/min, release cools to room temperature with the furnace after the completion of sintering；
In step 6, vacuum sintering technology parameter is：Vacuum is no more than 5.0 × 10 in hot pressing furnace-3Pa, with 5~10 DEG C/min's
Speed heats up, and soaking time is 5~20min, is then lowered the temperature with the speed of 5~10 DEG C/min, and last release obtains finished product.
9. a kind of solder according to claim 7 welding C/SiC composites and metal in application process；Its feature
It is：Described metal to be welded is selected from least one in titanium alloy, copper alloy, nickel alloy, aluminium alloy, aluminum matrix composite.
10. a kind of solder according to claim 9 welding C/SiC composites and metal in application process；It is special
Levy and be：
When metal to be welded is 7055 aluminium alloy, the shear strength at room temperature of gained finished product is more than or equal to 139MPa；
When metal to be welded is SiC particulate reinforced aluminum matrix composites, the shear strength at room temperature of gained finished product is more than or equal to
187MPa；The SiC particulate reinforced aluminum matrix composites include following components with mass percent：SiC 15%, balance of aluminium
Alloy substrate；The alloy matrix aluminum is 2024 aluminium alloys；
When metal to be welded is titanium alloy TC 4, the shear strength at room temperature of gained finished product is more than or equal to 142MPa；
When metal to be welded is copper alloy H60, the shear strength at room temperature of gained finished product is more than or equal to 195MPa；
When metal to be welded is nickel alloy inconel 600, the shear strength at room temperature of gained finished product is more than or equal to 216MPa.
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| CN110803942A (en) * | 2019-11-19 | 2020-02-18 | 中南大学 | Preparation method of ultrahigh-temperature ceramic modified C/C composite material |
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| CN106736030B (en) | 2019-05-17 |
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