CN102825354A - Composite-diffusion brazing method of Cf/SiC ceramic based composite materials and titanium alloy - Google Patents
Composite-diffusion brazing method of Cf/SiC ceramic based composite materials and titanium alloy Download PDFInfo
- Publication number
- CN102825354A CN102825354A CN2012103536990A CN201210353699A CN102825354A CN 102825354 A CN102825354 A CN 102825354A CN 2012103536990 A CN2012103536990 A CN 2012103536990A CN 201210353699 A CN201210353699 A CN 201210353699A CN 102825354 A CN102825354 A CN 102825354A
- Authority
- CN
- China
- Prior art keywords
- composite
- brazing
- diffusion
- sic ceramic
- temperature
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Ceramic Products (AREA)
Abstract
The invention discloses a composite-diffusion brazing method of Cf/SiC ceramic based composite materials and a titanium alloy, and belongs to the technical field of dissimilar material connection. The composite-diffusion brazing method of the Cf/SiC ceramic based the composite materials and the titanium alloy comprises the following steps: 1. mixing 57Ti-13Zr-21Cu-9Ni alloy powder and TiC powder, acquiring a composite brazing material, mixing the composite brazing material to be of a paste shape by use of alcohol, presetting between the brazing material, and forming a to-be-welded element; 2. placing the to-be-welded element into a vacuum environment, and under the condition of not applying pressure, compounding, brazing and connecting the Cf/SiC ceramic based composite materials and the titanium alloy at the preset brazing temperature, thereby obtaining a composite brazing joint; 3. carrying out vacuum diffusion treatment on the composite brazing joint obtained from the step 2 at the condition of being lower than the brazing temperature. The joint obtained by adopting the composite-diffusion brazing method of the Cf/SiC ceramic based composite materials and the titanium alloy provided by the invention has the room temperature shearing strength is 75.2MPa-221.6MPa, and the shearing strength at 800 DEG C is 46.4MPa-107.2MPa, and the using temperature of the joint is high than 800 DEG C, and connection can be realized at a lower temperature; the obtained room temperature intensity is high, especially the joint has good high-temperature-resistant performance; and the composite-diffusion brazing method of the Cf/SiC ceramic based composite materials and the titanium alloy has the advantages of simple process method, easiness in connection material preparation, low cost, tiny damage to a base material, and the like.
Description
Technical field
The invention belongs to foreign material interconnection technique field, particularly provide a kind of and can connect the method for attachment that obtains good resistance to elevated temperatures joint at a lower temperature.
Background technology
Domestic and international developing rapidly of space technology, more and more high to the requirement of the core component-engine of spaceflight delivering tool and appearance/rail control system, engine technology also constantly to high reliability, have an high regard for greatly that (matter) compares, highly sensitive direction develops.Advanced materials such as ceramic matric composite make the development of novel high-performance engine become possibility because of the application of a series of good characteristics on engine such as it is high temperature resistant, corrosion-resistant, light weight.Carbon fibre reinforced silicon carbide ceramic matric composite (C
f/ SiC ceramic matric composite) because the implantation of carbon fiber has effectively overcome the sensitiveness of single-phase SiC pottery to crackle and thermal shock; Fully combine SiC pottery and properties of carbon advantage, (solid density is 2.2g/cm like high thermal stability, high thermal conductivity, low-density
3, actual density is generally 1.75-2.10g/cm
3), low thermal coefficient of expansion; High-strength and high-modulus under excellent mechanical property-high temperature, good fracture toughness and wear-resisting/scour resistance etc.; Be the ideal material of making combustor component, turbo blade, rocket nozzle, space shuttle thermal protection structure etc., have important use at aerospace field and be worth.But compare C with metal material
fThe extensibility and the impact flexibility of/SiC composite are lower, and processing characteristics is relatively poor, make relatively difficulty of large scale or complex shaped components, in some application, and need be with C
f/ SiC ceramic matric composite and metal couple together forms large scale or complex shaped components, in conjunction with C
fThe mechanical behavior under high temperature advantage of/SiC ceramic matric composite and the characteristics of plastic deformation good toughness.Therefore, solve C
fThe interconnection technique problem of/SiC ceramic matric composite and high-temperature metal structural material (titanium alloy commonly used) is to guarantee C
fThe key that/SiC ceramic matric composite is used widely in above-mentioned field.
Such connectivity problem difficulty is big, reliability requirement is high, mainly shows: (1) C
f/ SiC ceramic matric composite and metal metallurgy smelting compatibility extreme difference can't directly carry out molten solder; (2) C
fThermal expansion coefficient difference is bigger between/SiC ceramic matric composite and the metal, and common diffusion welding (DW) and soldering tend to form bigger thermal stress, joint easy of crack; (3) the joint serviceability requires high: in the Aero-Space engine; Ceramic matric composite all is to use as high-temperature structural material usually; Therefore to the high temperature resistant requirement of jointing also often more than 800 ℃ even 1000 ℃; Air-tightness, thermal shock resistance and the anti-ablative of butt joint simultaneously also have very high requirement, and general soldered fitting is difficult to meet the demands; (4) the joint service reliability requires high: aerospace craft is the system of a complicacy, and a bit fault of any link, any structure all can lead to catastrophic accident, and is therefore also very strict to the reliability requirement of syndeton.Therefore, carry out C
f/ SiC ceramic matric composite and titanium alloy interconnection technique, especially high temperature resistant interconnection technique research has crucial meaning.
Along with to C
f/ SiC composite study is both at home and abroad about C
fThe report of/SiC ceramic matric composite interconnection technique increases year by year, but rarely has report for the research of joint high temperature strength, and the joint performance of method of attachment of using and acquisition all can't satisfy the needs of practical application.Utilize the Si powder to do solder like people such as Italian scholar Salvo at 1400 ℃ of soldering C
f/ SiC ceramic matric composite [Salvo M, et al. Journal of Nuclear Materials, 1996,233-237:949-953.], strength of joint is merely 7MPa; People such as Singh adopt 1000 ℃ of vacuum brazing C of Ni based amorphous brazing filler metal solder
f/ SiC ceramic matric composite and titanium alloy [Singh M, et al. Materials science and Engineering A, 2008,498:19-30.], the soldering post analysis joint microstructure structure and micro-hardness, but do not see the explanation its strength of joint; Tong Qiaoying etc. adopt the Ni alloy as the intermediate layer at 1300 ℃; Insulation 45min, and online liquid infiltration connection C/SiC ceramic matric composite under the vacuum condition of pressure 20MPa [Tong Qiaoying etc. rare metal and material, 2004; 33 (1): 101-104.], postwelding joint three-point bending strength is σ
Draw=44.94MPa, σ
Press=47.24MPa; The laminated construction that people such as Li Jinglong adopt Ti-Cu core intermediate layer and the auxiliary intermediate layer of Cu to constitute utilizes the solid-state diffusion connection to be connected the method for attachment that combines with instantaneous liquid phase and connects C
f/ SiC ceramic matric composite and metal Nb [Li Jinglong, et al. Scripta Materialia, 2006,55:151-154.], the high shear strength of joint is 34.1MPa; People such as Liu Hongli adopt the ceramic precursor conversion method to connect C
f/ SiC ceramic matric composite [Liu Hongli etc. China YouSe Acta Metallurgica Sinica, 2008,18 (2): 278-281.], connecting temperature is 1300 ℃, the shearing strength maximum of joint is 29.6MPa; Feng Ji just wait the talent with the Ni paillon foil to C
f/ SiC ceramic matric composite and Nb have carried out vacuum brazing [the 15 national soldering and extraordinary interconnection technique exchanging meeting collection of thesis; 2008:50-56.]; Analyzed the influence that brazing temperature butt joint Interface Microstructure connects intensity; At 1180 ℃, the room temperature shearing strength of soldered fitting is up to 67MPa during 10min, and fracture occurs in C simultaneously
f/ SiC ceramic matric composite mother metal and weld seam; People such as Huang Jihua are employed in and add metal W particle composite brazing C in the Ag-Cu-Ti active solder
f/ SiC ceramic matric composite and titanium alloy [Lin Guobiao, Huang Jihua, Zhang Hua; Et al. Journal of Materials Processing Technology, 2007,189:256-261.]; Brazing temperature is 900 ℃; Joint room temperature shear strength reaches 168MPa, but when temperature rose to more than 800 ℃, strength of joint can't satisfy user demand.In Ag-Cu-Ti solder alloy powder, add Ti powder and C powder vacuum and do not have the soldering of pressure C
f/ SiC ceramic matric composite and titanium alloy [Lin Guobiao; Huang Jihua. Powder Metallurgy, 2006,49 (4): 345-348.]; The synthetic TiC of original position be uniformly distributed in Ag mutually with Cu-Ti matrix mutually in; Formation is similar to the articulamentum of particles reiforced metal-base composition, and joint room temperature shear strength reaches 146MPa, and 800 ℃ of shear at high temperature intensity reach 39MPa; People such as Japanese plum outstanding person adopt Zr/Ta composite interlayer vacuum hotpressing diffusion to connect C
f/ SiC ceramic matric composite and GH128 nickel base superalloy [Zhang Jianjun, Japanese plum outstanding person etc. Rare Metals Materials and engineering, 2002,31 (supplementary issue 1): 393-396.], connecting temperature is 1050 ℃, high-flexural strength value is 110.89MPa.Adopt double carbide Ti
3SiC
2Powder is intermediate layer soldering C
f/ SiC ceramic matric composite [Hongying Dong, Shujie Li, et al. Materials Science and Engineering B; 2011; 176:60-64.], when the connection temperature was 1600 ℃, the three-point bending strength of joint reached 56.7% of strength of parent;
In sum, both at home and abroad for C
fBeing connected in the research report of/SiC ceramic matric composite and metal exists the connection complex process, can not the complex connection structural member; Connect temperature higher ≧ 1000 ℃), bigger to the infringement of mother metal; Strength of joint is not high, and problem such as especially the joint high temperature strength is lower makes C
f/ SiC ceramic matric composite resistance to elevated temperatures can't fully be used.
Summary of the invention
In order to overcome C
fThe problem that/SiC ceramic matric composite and metal exist, the present invention provide a kind of connect technology simple, connect effective method of attachment that temperature is low, the high especially high temperature strength of strength of joint is high, realize that low temperature connects high temperature and is on active service.
The present invention provides a kind of C
fCompound-the diffusion soldering method of/SiC ceramic matric composite and titanium alloy is characterized in that, this method may further comprise the steps:
Step 1. is mixed the back with the 57Ti-13Zr-21Cu-9Ni alloy powder and is obtained composite soldering with the TiC powder, said composite soldering is preset at C after with alcohol furnishing paste
fBetween the welding surface of/SiC ceramic matric composite and titanium alloy, form to-be-welded pieces;
Step 2. is placed on said to-be-welded pieces in the vacuum environment, under the condition of not exerting pressure, connects C with predetermined brazing temperature composite brazing
f/ SiC ceramic matric composite and titanium alloy obtain the composite brazing joint;
Step 3. is carried out the vacuum DIFFUSION TREATMENT being lower than the composite brazing joint that under the brazing temperature condition step 2 is obtained, and obtains compound-diffusion brazing joint.
Preferably, the concrete steps of step 2 are:
Step 2.1 is put into vacuum brazing furnace with to-be-welded pieces;
Step 2.2 is worked as vacuum and is reached 6 * 10
-3Begin heating during Pa, heating rate is 10 ℃/min;
Step 2.3 is elevated to 910 ℃ ~ 950 ℃ welding temperature, cool to room temperature behind insulation 5min ~ 30min, and 5 ℃/min of cooling velocity ~ 10 ℃/min obtains the composite brazing joint.
Preferably, the concrete steps of step 2 are:
Step 3.1 is put into vacuum brazing furnace with the composite brazing joint;
Step 3.2 is worked as vacuum and is reached 6 * 10
-3Begin heating during Pa, heating rate is 10 ℃/min;
Step 3.3 is elevated to 800 ℃ ~ 900 ℃ diffusion temperature, cool to room temperature behind insulation 60 ~ 180min, and 5 ℃/min of cooling velocity ~ 10 ℃/min obtains compound-diffusion brazing joint.
Preferably, the volume fraction 5% ~ 25% of TiC powder in composite soldering in the step 1.
Preferably, the pre-treatment step that before step 1, also comprises welding surface: C polishes respectively
fThe welding surface of/SiC ceramic matric composite and titanium alloy is removed surface irregularities and oxide-film, and cleans and dry.
According to the embodiment of the invention, utilize Ti-Zr-Cu-Ni to be connected C with TiC composite soldering composite brazing
f/ SiC ceramic matric composite and titanium alloy can improve the room temperature and the elevated temperature strength of joint; Then the composite brazing joint is carried out the isothermal DIFFUSION TREATMENT,, further improve the resistance to elevated temperatures of joint through the composition even diffusedization between articulamentum and the mother metal.The present invention is the advantage of composite brazing and diffusion brazing (instantaneous liquid-phase diffusion welding) comprehensively, under low temperature, low pressure condition of contact, obtains high temperature resistant jointing, can realize C
f/ SiC ceramic matric composite is connected with the metal excellent metallurgical, and the connection of composite/composite and composite/metal is of universal significance, and it is easy and cost is low to connect material preparation, and technical process is simple.
Description of drawings
Fig. 1 is C
f/ SiC ceramic matric composite and titanium alloy be compound-diffusion brazing joint microstructure surface sweeping sem image, and top is C
f/ SiC ceramic matric composite, the centre is an articulamentum, the bottom is a titanium alloy;
Fig. 2 is C
f/ SiC ceramic matric composite and titanium alloy be compound-diffusion brazing joint articulamentum microstructure scanning electron microscope image; Black massive phase (A) is the TiC particle; It is uniformly distributed in the articulamentum, and light grey matrix phase (B) is the Ti-Cu phase, and white base phase (C) is mainly Cu-Zr and Ti-Ni mutually; Dark-grey form and aspect (D) around the TiC are mainly Zr and TiC reacts the Ti element that displaces, and contain a spot of Zr and C element.
Fig. 3 is C
f/ SiC ceramic matric composite and titanium alloy be compound-diffusion brazing joint articulamentum XRD figure spectrum.
Fig. 4 is C
f/ SiC ceramic matric composite and titanium alloy be compound-flow chart of diffusion brazing.
Specific embodiment 1
1.C
f/ SiC ceramic matric composite density is 2.0 ~ 2.1g/cm
3, the porosity is 10 ~ 15%, and fibre bundle is 3K, and fiber volume accounts for 45 ~ 50%, and the about 400MPa of room temperature bending strength cuts into the square of 5 * 5 * 5mm, and titanium alloy (TC4) component is Ti-6Al-4V (wt%), and titanium alloy cuts into the square of 12 * 12 * 3mm.
2. the solder alloy powder is that mass fraction is the alloy powder of 57Ti-13Zr-21Cu-9Ni, and powder size is 200 orders, and the TiC powder, and TiC powder particle mean size is 200 orders, and purity is all greater than 99.9%.
3. C
fThe welding surface of/SiC ceramic matric composite is polished with 400 purpose fine sandpapers; Remove the welding surface foreign material; The welding surface of titanium alloy is removed surface film oxide with 60 order sand paperings; Two kinds of mother metals to be welded that polishing is good are all clean with acetone, put into the drying box dry for standby that temperature is set at 50 ℃.
4. take by weighing an amount of Ti-Zr-Cu-Ni alloy powder; Ti-Zr-Cu-Ni alloy powder and TiC powder mixed obtain composite soldering; Add alcohol composite soldering is reconciled into paste solder, wherein TiC powder volume fraction in (Ti-Zr-Cu-Ni)+TiC composite soldering is 5%.
5. an amount of paste solder is evenly spread upon on the titanium alloy surface to be welded, again with C
f/ SiC ceramic matric composite places on the paste solder, gently presses C
f/ SiC ceramic matric composite control connection layer presets the gap and is approximately 0.3mm.
6. ready weld parts is put into the flat-temperature zone of VQB-335 type multifunctional vacuum soldering oven, taken out low vacuum with sliding vane rotary pump and lobe pump earlier, and then continue pumping high vacuum, when vacuum reaches 6.0 * 10 with diffusion pump
-3More than the Pa, just begin heating.The heating rate of heating is 10 ℃/min, is elevated to 910 ℃ connection temperature, is incubated after 15min minute; The cold cooling of stove; Rate of temperature fall is about 5 ℃/min ~ 10 ℃/min, turns off diffusion pump and lobe pump when dropping to 200 ℃, closes sliding vane rotary pump after 60 minutes; When furnace temperature is cooled near room temperature, obtain the composite brazing joint.
7. the composite brazing joint is put into once more the flat-temperature zone of VQB-335 type multifunctional vacuum soldering oven, taken out low vacuum with sliding vane rotary pump and lobe pump earlier, and then continue pumping high vacuum, when vacuum reaches 6.0 * 10 with diffusion pump
-3More than the Pa, just begin heating.The heating rate of heating is 10 ℃/min, is elevated to 800 ℃ connection temperature, is incubated after 60min minute; The cold cooling of stove; Rate of temperature fall is about 5 ℃/min ~ 10 ℃/min, turns off diffusion pump and lobe pump when dropping to 200 ℃, closes sliding vane rotary pump after 60 minutes; When furnace temperature is cooled near room temperature, obtain compound-diffusion brazing joint.
Compound-diffusion brazing joint that step 7 is obtained cuts along the axis interface, to interface polishing back polishing, is prepared into metallographic specimen with sand paper; Adopt X-ray diffraction and energy spectrum analysis to identify the thing phase constituent; As shown in Figure 3, surface sweeping electronic microscope photos displaing micro tissue topography is like Fig. 1, shown in 2; Compound-diffusion brazing joint that step 7 obtains is put into special fixture; On electronic universal tester, carry out room temperature and 800 ℃ of shear at high temperature strength tests; Loading speed is 0.5mm/min, and the maximum load of output when the record workpiece is cut off is according to maximum load conversion shearing strength of joint.
The step 1-3 that before the initial step of following specific embodiment 2-5, comprises this specific embodiment 1 is in order to prepare mother metal (C to be welded
f/ SiC ceramic matric composite and titanium alloy) and solder in 57Ti-13Zr-21Cu-9Ni alloy powder and TiC powder.
Specific embodiment 2
1. take by weighing an amount of Ti-Zr-Cu-Ni alloy powder; Ti-Zr-Cu-Ni alloy powder and TiC powder mixed obtain composite soldering; Add alcohol solder is reconciled into paste solder, wherein TiC powder volume fraction in (Ti-Zr-Cu-Ni)+TiC composite soldering is 15%.
2. an amount of paste solder is evenly spread upon on the titanium alloy surface to be welded, again with C
f/ SiC ceramic matric composite places on the paste solder, gently presses C
f/ SiC ceramic matric composite control connection layer presets the gap and is approximately 0.3mm.
3. ready weld parts is put into the flat-temperature zone of VQB-335 type multifunctional vacuum soldering oven, taken out low vacuum with sliding vane rotary pump and lobe pump earlier, and then continue pumping high vacuum, when vacuum reaches 6.0 * 10 with diffusion pump
-3More than the Pa, just begin heating.The heating rate of heating is 10 ℃/min, is elevated to 930 ℃ connection temperature, is incubated after 20min minute; The cold cooling of stove; Rate of temperature fall is about 5 ℃/min ~ 10 ℃/min, turns off diffusion pump and lobe pump when dropping to 200 ℃, closes sliding vane rotary pump after 60 minutes; When furnace temperature is cooled near room temperature, obtain the composite brazing joint.
4. the composite brazing joint is put into once more the flat-temperature zone of VQB-335 type multifunctional vacuum soldering oven, taken out low vacuum with sliding vane rotary pump and lobe pump earlier, and then continue pumping high vacuum, when vacuum reaches 6.0 * 10 with diffusion pump
-3More than the Pa, just begin heating.The heating rate of heating is 10 ℃/min, is elevated to 900 ℃ connection temperature, insulation 60,120 or after 180min minute; The cold cooling of stove; Rate of temperature fall is about 5 ℃/min ~ 10 ℃/min, turns off diffusion pump and lobe pump when dropping to 200 ℃, closes sliding vane rotary pump after 60 minutes; When furnace temperature is cooled near room temperature, obtain compound-diffusion brazing joint.
Specific embodiment 3
1. take by weighing an amount of Ti-Zr-Cu-Ni alloy powder; Ti-Zr-Cu-Ni alloy powder and TiC powder mixed obtain composite soldering; Add alcohol solder is reconciled into paste solder, wherein TiC powder volume fraction in (Ti-Zr-Cu-Ni)+TiC composite soldering is 25%.
2. an amount of paste solder is evenly spread upon on the titanium alloy surface to be welded, again with C
f/ SiC ceramic matric composite places on the paste solder, gently presses C
f/ SiC ceramic matric composite control connection layer presets the gap and is approximately 0.3mm.
3. ready weld parts is put into the flat-temperature zone of VQB-335 type multifunctional vacuum soldering oven, taken out low vacuum with sliding vane rotary pump and lobe pump earlier, and then continue pumping high vacuum, when vacuum reaches 6.0 * 10 with diffusion pump
-3More than the Pa, just begin heating.The heating rate of heating is 10 ℃/min, is elevated to 930 ℃ connection temperature, is incubated after 20min minute; The cold cooling of stove; Rate of temperature fall is about 5 ℃/min ~ 10 ℃/min, turns off diffusion pump and lobe pump when dropping to 200 ℃, closes sliding vane rotary pump after 60 minutes; When furnace temperature is cooled near room temperature, obtain the composite brazing joint.
4. the composite brazing joint is put into once more the flat-temperature zone of VQB-335 type multifunctional vacuum soldering oven, taken out low vacuum with sliding vane rotary pump and lobe pump earlier, and then continue pumping high vacuum, when vacuum reaches 6.0 * 10 with diffusion pump
-3More than the Pa, just begin heating.The heating rate of heating is 10 ℃/min, is elevated to 900 ℃ connection temperature, insulation 60,120 or after 180min minute; The cold cooling of stove; Rate of temperature fall is about 5 ℃/min ~ 10 ℃/min, turns off diffusion pump and lobe pump when dropping to 200 ℃, closes sliding vane rotary pump after 60 minutes; When furnace temperature is cooled near room temperature, obtain compound-diffusion brazing joint.
Specific embodiment 4
1. take by weighing an amount of Ti-Zr-Cu-Ni alloy powder; Ti-Zr-Cu-Ni alloy powder and TiC powder mixed obtain composite soldering; Add alcohol solder is reconciled into paste solder, wherein TiC powder volume fraction in (Ti-Zr-Cu-Ni)+TiC composite soldering is 15%.
2. an amount of paste solder is evenly spread upon on the titanium alloy surface to be welded, again with C
f/ SiC ceramic matric composite places on the paste solder, gently presses C
f/ SiC ceramic matric composite control connection layer presets the gap and is approximately 0.3mm.
3. ready weld parts is put into the flat-temperature zone of VQB-335 type multifunctional vacuum soldering oven, taken out low vacuum with sliding vane rotary pump and lobe pump earlier, and then continue pumping high vacuum, when vacuum reaches 6.0 * 10 with diffusion pump
-3More than the Pa, just begin heating.The heating rate of heating is 10 ℃/min, is elevated to 950 ℃ connection temperature, is incubated after 5min minute; The cold cooling of stove; Rate of temperature fall is about 5 ℃/min ~ 10 ℃/min, turns off diffusion pump and lobe pump when dropping to 200 ℃, closes sliding vane rotary pump after 60 minutes; When furnace temperature is cooled near room temperature, obtain the composite brazing joint.
4. the composite brazing joint is put into once more the flat-temperature zone of VQB-335 type multifunctional vacuum soldering oven, taken out low vacuum with sliding vane rotary pump and lobe pump earlier, and then continue pumping high vacuum, when vacuum reaches 6.0 * 10 with diffusion pump
-3More than the Pa, just begin heating.The heating rate of heating is 10 ℃/min, is elevated to 900 ℃ connection temperature, is incubated after 60min minute; The cold cooling of stove; Rate of temperature fall is about 5 ℃/min ~ 10 ℃/min, turns off diffusion pump and lobe pump when dropping to 200 ℃, closes sliding vane rotary pump after 60 minutes; When furnace temperature is cooled near room temperature, obtain compound-diffusion brazing joint.
Specific embodiment 5
1. take by weighing an amount of Ti-Zr-Cu-Ni alloy powder; Ti-Zr-Cu-Ni alloy powder and TiC powder mixed obtain composite soldering; Add alcohol solder is reconciled into paste solder, wherein TiC powder volume fraction in (Ti-Zr-Cu-Ni)+TiC composite soldering is 25%.
2. an amount of paste solder is evenly spread upon on the titanium alloy surface to be welded, again with C
f/ SiC ceramic matric composite places on the paste solder, gently presses C
f/ SiC ceramic matric composite control connection layer presets the gap and is approximately 0.3mm.
3. ready weld parts is put into the flat-temperature zone of VQB-335 type multifunctional vacuum soldering oven, taken out low vacuum with sliding vane rotary pump and lobe pump earlier, and then continue pumping high vacuum, when vacuum reaches 6.0 * 10 with diffusion pump
-3More than the Pa, just begin heating.The heating rate of heating is 10 ℃/min, is elevated to 950 ℃ connection temperature, is incubated after 30min minute; The cold cooling of stove; Rate of temperature fall is about 5 ℃/min ~ 10 ℃/min, turns off diffusion pump and lobe pump when dropping to 200 ℃, closes sliding vane rotary pump after 60 minutes; When furnace temperature is cooled near room temperature, obtain the composite brazing joint.
4. the composite brazing joint is put into once more the flat-temperature zone of VQB-335 type multifunctional vacuum soldering oven, taken out low vacuum with sliding vane rotary pump and lobe pump earlier, and then continue pumping high vacuum, when vacuum reaches 6.0 * 10 with diffusion pump
-3More than the Pa, just begin heating.The heating rate of heating is 10 ℃/min, is elevated to 800 ℃ connection temperature, is incubated after 60min minute; The cold cooling of stove; Rate of temperature fall is about 5 ℃/min ~ 10 ℃/min, turns off diffusion pump and lobe pump when dropping to 200 ℃, closes sliding vane rotary pump after 60 minutes; When furnace temperature is cooled near room temperature, obtain compound-diffusion brazing joint.
The comparative example 1,2
1.C
f/ SiC ceramic matric composite density is 2.0 ~ 2.1g/cm
3, the porosity is 10 ~ 15%, and fibre bundle is 3K, and fiber volume accounts for 45 ~ 50%, and the about 400MPa of room temperature bending strength cuts into the square of 5 * 5 * 5mm, and titanium alloy (TC4) component is Ti-6Al-4V (wt%), and titanium alloy cuts into the square of 12 * 12 * 3mm.
2. the solder alloy powder is that mass fraction is the alloy powder of 57Ti-13Zr-21Cu-9Ni, and powder size is 200 orders.
3. C
fThe welding surface of/SiC ceramic matric composite is polished with 400 purpose fine sandpapers; Remove the welding surface foreign material; The welding surface of titanium alloy is removed surface film oxide with 60 order sand paperings; Two kinds of mother metals to be welded that polishing is good are all clean with acetone, put into the drying box dry for standby that temperature is set at 50 ℃.
4. take by weighing an amount of Ti-Zr-Cu-Ni alloy powder, add alcohol and reconcile into paste solder.
5. an amount of paste solder is evenly spread upon on the titanium alloy surface to be welded, again with C
f/ SiC ceramic matric composite places on the paste solder, gently presses C
f/ SiC ceramic matric composite control connection layer presets the gap and is approximately 0.3mm.
6. ready weld parts is put into the flat-temperature zone of VQB-335 type multifunctional vacuum soldering oven, taken out low vacuum with sliding vane rotary pump and lobe pump earlier, and then continue pumping high vacuum, when vacuum reaches 6.0 * 10 with diffusion pump
-3More than the Pa, just begin heating.The heating rate of heating is 10 ℃/min, is elevated to the connection temperature of 930 ℃ or 950 ℃, is incubated after 20min minute; The cold cooling of stove; Rate of temperature fall is about 5 ℃/min ~ 10 ℃/min, turns off diffusion pump and lobe pump when dropping to 200 ℃, closes sliding vane rotary pump after 60 minutes; When furnace temperature is cooled near room temperature, obtain soldered fitting.
7. soldered fitting is put into once more the flat-temperature zone of VQB-335 type multifunctional vacuum soldering oven, taken out low vacuum with sliding vane rotary pump and lobe pump earlier, and then continue pumping high vacuum, when vacuum reaches 6.0 * 10 with diffusion pump
-3More than the Pa, just begin heating.The heating rate of heating is 10 ℃/min, is elevated to 900 ℃ connection temperature, is incubated after 60min minute; The cold cooling of stove; Rate of temperature fall is about 5 ℃/min ~ 10 ℃/min, turns off diffusion pump and lobe pump when dropping to 200 ℃, closes sliding vane rotary pump after 60 minutes; When furnace temperature is cooled near room temperature, obtain through the joint after the DIFFUSION TREATMENT.
Joint after the common soldered fitting that on electronic universal tester, the composite brazing joint that obtains among the specific embodiment 1-5, compound-diffusion brazing joint and comparative example 1,2 is obtained, the process DIFFUSION TREATMENT carries out room temperature and 800 ℃ of shear at high temperature strength tests; Loading speed is 0.5mm/min; The maximum load of output when the record workpiece is cut off is according to maximum load conversion shearing strength of joint.Comparing result is following:
Wherein showing center tap shearing strength data value is the mean value of three sample shearing strengths; Can know by the data in the table 1, adopt compound-diffusion brazing to connect C
f/ SiC composite and titanium alloy, the room temperature of joint and high temperature (800 ℃) shear strength all is significantly improved than the common soldering of not adding the TiC powder and composite brazing strength of joint.When wild phase TiC content is 15vol.% ~ 25vol.%; Connect 930 ℃ ~ 950 ℃ of temperature; Holding time 20min ~ 30min, through after 60min ~ 120min DIFFUSION TREATMENT, the shear strength of joint reaches high value; The room temperature shear strength is 92.2MPa ~ 221.6MPa, and high temperature (800 ℃) shear strength is 58.5MPa ~ 107.2MPa.
Although illustrated and described embodiments of the invention; For those of ordinary skill in the art; Be appreciated that under the situation that does not break away from principle of the present invention and spirit and can carry out multiple variation, modification, replacement and modification that scope of the present invention is accompanying claims and be equal to and limit to these embodiment.
Claims (5)
1. C
fCompound-the diffusion soldering method of/SiC ceramic matric composite and titanium alloy is characterized in that, this method may further comprise the steps:
Step 1. is mixed the back with the 57Ti-13Zr-21Cu-9Ni alloy powder and is obtained composite soldering with the TiC powder, said composite soldering is preset at C after with alcohol furnishing paste
fBetween the welding surface of/SiC ceramic matric composite and titanium alloy, form to-be-welded pieces;
Step 2. is placed on said to-be-welded pieces in the vacuum environment, under the condition of not exerting pressure, connects C with predetermined brazing temperature composite brazing
f/ SiC ceramic matric composite and titanium alloy obtain the composite brazing joint;
Step 3. is carried out the vacuum DIFFUSION TREATMENT being lower than the composite brazing joint that under the diffusion temperature of brazing temperature step 2 is obtained, and obtains compound-diffusion brazing joint.
2. C as claimed in claim 1
fCompound-the diffusion soldering method of/SiC ceramic matric composite and titanium alloy is characterized in that, the concrete steps of step 2 are:
Step 2.1 is put into vacuum brazing furnace with to-be-welded pieces;
Step 2.2 is worked as vacuum and is reached 6 * 10
-3Begin heating during Pa, heating rate is 10 ℃/min;
Step 2.3 is elevated to 910 ℃ ~ 950 ℃ welding temperature, cool to room temperature behind insulation 5min ~ 30min, and 5 ℃/min of cooling velocity ~ 10 ℃/min obtains the composite brazing joint.
3. C as claimed in claim 2
fCompound-the diffusion soldering method of/SiC ceramic matric composite and titanium alloy is characterized in that, the concrete steps of step 2 are:
Step 3.1 is put into vacuum brazing furnace with the composite brazing joint;
Step 3.2 is worked as vacuum and is reached 6 * 10
-3Begin heating during Pa, heating rate is 10 ℃/min;
Step 3.3 is elevated to 800 ℃ ~ 900 ℃ diffusion temperature, cool to room temperature behind insulation 60 ~ 180min, and 5 ℃/min of cooling velocity ~ 10 ℃/min obtains compound-diffusion brazing joint.
4. C as claimed in claim 1
fCompound-the diffusion soldering method of/SiC ceramic matric composite and titanium alloy is characterized in that, the volume fraction of TiC powder in composite soldering is 5% ~ 25% in the step 1.
5. C as claimed in claim 1
fCompound-the diffusion soldering method of/SiC ceramic matric composite and titanium alloy is characterized in that, before step 1, also comprises the pre-treatment step of welding surface: C polishes respectively
fThe welding surface of/SiC ceramic matric composite and titanium alloy is removed surface irregularities and oxide-film, and cleans and dry processing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210353699.0A CN102825354B (en) | 2012-09-20 | 2012-09-20 | A kind of C fcompound-the diffusion soldering method of/SiC ceramic based composites and titanium alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210353699.0A CN102825354B (en) | 2012-09-20 | 2012-09-20 | A kind of C fcompound-the diffusion soldering method of/SiC ceramic based composites and titanium alloy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102825354A true CN102825354A (en) | 2012-12-19 |
| CN102825354B CN102825354B (en) | 2015-08-05 |
Family
ID=47328779
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210353699.0A Expired - Fee Related CN102825354B (en) | 2012-09-20 | 2012-09-20 | A kind of C fcompound-the diffusion soldering method of/SiC ceramic based composites and titanium alloy |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102825354B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103264235A (en) * | 2013-04-26 | 2013-08-28 | 哈尔滨工业大学 | Composite soldering material, preparation method thereof and method of using composite soldering material to solder TiBw/TC4 titanium-based composite material |
| CN103990880A (en) * | 2014-06-06 | 2014-08-20 | 哈尔滨工业大学 | Non-metallic material and metal material brazing method capable of forming interpenetrating network structure brazing seams |
| CN110480112A (en) * | 2019-08-14 | 2019-11-22 | 北京科技大学 | Cf/ SiC ceramic matrix composite material reacts composite diffusion soldering connecting method with Ni based high-temperature alloy |
| CN110734298A (en) * | 2018-12-31 | 2020-01-31 | 深圳硅基仿生科技有限公司 | Brazing structure of ceramic and metal |
| CN113714584A (en) * | 2021-09-08 | 2021-11-30 | 中国航发北京航空材料研究院 | Connecting method and auxiliary tool for titanium-aluminum compound turbine and steel shaft |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH046172A (en) * | 1990-04-20 | 1992-01-10 | Sumitomo Special Metals Co Ltd | Composite foil brazing material for joining ceramics |
| CN101462890A (en) * | 2009-01-12 | 2009-06-24 | 北京科技大学 | Connecting method for Cf/SiC composite material and titanium alloy |
| JP4414556B2 (en) * | 2000-04-28 | 2010-02-10 | 新日本製鐵株式会社 | Manufacturing method of clad material of ceramic and copper |
| CN101786898A (en) * | 2010-01-15 | 2010-07-28 | 北京科技大学 | Method for connecting Cf/SiC composite material and Ni-based high-temperature alloy |
| CN102584312A (en) * | 2012-03-01 | 2012-07-18 | 哈尔滨工业大学 | Carbon-nanotube-assisted brazing method of ceramic matrix fibre-woven composite and metal material |
| CN102633518A (en) * | 2012-04-20 | 2012-08-15 | 江苏科技大学 | Connection method of Si3N4 ceramics and titanium alloy |
-
2012
- 2012-09-20 CN CN201210353699.0A patent/CN102825354B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH046172A (en) * | 1990-04-20 | 1992-01-10 | Sumitomo Special Metals Co Ltd | Composite foil brazing material for joining ceramics |
| JP4414556B2 (en) * | 2000-04-28 | 2010-02-10 | 新日本製鐵株式会社 | Manufacturing method of clad material of ceramic and copper |
| CN101462890A (en) * | 2009-01-12 | 2009-06-24 | 北京科技大学 | Connecting method for Cf/SiC composite material and titanium alloy |
| CN101786898A (en) * | 2010-01-15 | 2010-07-28 | 北京科技大学 | Method for connecting Cf/SiC composite material and Ni-based high-temperature alloy |
| CN102584312A (en) * | 2012-03-01 | 2012-07-18 | 哈尔滨工业大学 | Carbon-nanotube-assisted brazing method of ceramic matrix fibre-woven composite and metal material |
| CN102633518A (en) * | 2012-04-20 | 2012-08-15 | 江苏科技大学 | Connection method of Si3N4 ceramics and titanium alloy |
Non-Patent Citations (4)
| Title |
|---|
| 张学军: "《航空钎焊技术》", 30 June 2008, 航空工业出版社 * |
| 李亚江、王娟等: "《异种难焊材料的焊接及应用》", 30 January 2004 * |
| 熊进辉: "Cf/SiC复合材料与Ti合金的Ag-Cu-Ti-TiC复合钎焊", 《中国有色金属学报》 * |
| 陈波: "采用Ti-Zr-Cu-Ni钎料钎焊SiC纤维增强钛基复合材料的接头组织与性能", 《材料工程》 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103264235A (en) * | 2013-04-26 | 2013-08-28 | 哈尔滨工业大学 | Composite soldering material, preparation method thereof and method of using composite soldering material to solder TiBw/TC4 titanium-based composite material |
| CN103264235B (en) * | 2013-04-26 | 2015-05-20 | 哈尔滨工业大学 | Composite soldering material, preparation method thereof and method of using composite soldering material to solder TiBw/TC4 titanium-based composite material |
| CN103990880A (en) * | 2014-06-06 | 2014-08-20 | 哈尔滨工业大学 | Non-metallic material and metal material brazing method capable of forming interpenetrating network structure brazing seams |
| CN103990880B (en) * | 2014-06-06 | 2015-12-02 | 哈尔滨工业大学 | The nonmetallic materials of inierpeneirating network structure brazed seam and the method for welding of metal material can be formed |
| CN110734298A (en) * | 2018-12-31 | 2020-01-31 | 深圳硅基仿生科技有限公司 | Brazing structure of ceramic and metal |
| CN110480112A (en) * | 2019-08-14 | 2019-11-22 | 北京科技大学 | Cf/ SiC ceramic matrix composite material reacts composite diffusion soldering connecting method with Ni based high-temperature alloy |
| CN110480112B (en) * | 2019-08-14 | 2021-03-12 | 北京科技大学 | Reaction composite diffusion brazing connection method of Cf/SiC composite material and Ni-based high-temperature alloy |
| CN113714584A (en) * | 2021-09-08 | 2021-11-30 | 中国航发北京航空材料研究院 | Connecting method and auxiliary tool for titanium-aluminum compound turbine and steel shaft |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102825354B (en) | 2015-08-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| He et al. | Microstructure and mechanical properties of the Si3N4/42CrMo steel joints brazed with Ag–Cu–Ti+ Mo composite filler | |
| CN101786898B (en) | Method for connecting Cf/SiC composite material and Ni-based high-temperature alloy | |
| CN109877413B (en) | Brazing material for SiC ceramic brazing and brazing method | |
| CN102825354B (en) | A kind of C fcompound-the diffusion soldering method of/SiC ceramic based composites and titanium alloy | |
| CN101462890A (en) | Connecting method for Cf/SiC composite material and titanium alloy | |
| Salvo et al. | One-step brazing process to join CFC composites to copper and copper alloy | |
| Appendino et al. | Joining of C/C composites to copper | |
| CN110524082B (en) | Method for quickly wetting carbon fibers in ceramic matrix composite by taking Fe as active element | |
| CN109047963B (en) | CfComposite brazing connection method of/C composite material and nickel-based high-temperature alloy | |
| Wang et al. | The preparation and mechanical properties of carbon/carbon (C/C) composite and carbon fiber reinforced silicon carbide (Cf/SiC) composite joint by partial transient liquid phase (PTLP) diffusion bonding process | |
| CN102699574A (en) | Si3N4 and 42CrMo steel connecting solder and brazing connection method | |
| CN102924109B (en) | Cf/SiC ceramic matrix composite connecting method | |
| CN113600957A (en) | Composite interlayer and method for brazing boron carbide composite ceramic and titanium alloy | |
| CN102825353B (en) | A kind of C fcompound-the diffusion soldering method of/SiC ceramic based composites and titanium alloy | |
| CN103232257B (en) | Fast connection method of carbon/carbon composite material | |
| CN108274086B (en) | Method for brazing carbon fiber reinforced carbon-based composite material at high temperature by two-step method | |
| CN110480112B (en) | Reaction composite diffusion brazing connection method of Cf/SiC composite material and Ni-based high-temperature alloy | |
| CN103341675A (en) | Method for braze welding of Cf/SiC composite material and metal Nb by using Ti-Co-Nb brazing filler metal | |
| CN114749743B (en) | High-temperature connection method for soldering C/C composite material and Ni-based alloy by adopting pure Cu | |
| CN107931763A (en) | A kind of method for welding being reliably connected and improve Ti Al Nb alloy self performances | |
| CN106242606A (en) | One utilizes Zr Ni base solder brazing ZrB2the method of SiC composite ceramics | |
| CN102699573A (en) | High temperature brazing filler metal for brazing non-oxide ceramic and composite material as well as preparation method of high temperature brazing filler metal | |
| CN110026634B (en) | Method for brazing carbon fiber reinforced carbon-based composite material by using Si-Zr high-temperature brazing filler metal | |
| CN102672163B (en) | Powdery interlayer material for liquid-phase diffusion bonding of GH4169 high-temperature alloy and preparation method of same | |
| Casalegno et al. | One-step brazing process for CFC monoblock joints and mechanical testing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150805 Termination date: 20210920 |