CN104690386A - Method for connecting Cf/LAS composite material via AgCuTi brazing filler metal - Google Patents
Method for connecting Cf/LAS composite material via AgCuTi brazing filler metal Download PDFInfo
- Publication number
- CN104690386A CN104690386A CN201510132521.7A CN201510132521A CN104690386A CN 104690386 A CN104690386 A CN 104690386A CN 201510132521 A CN201510132521 A CN 201510132521A CN 104690386 A CN104690386 A CN 104690386A
- Authority
- CN
- China
- Prior art keywords
- las
- las composite
- composite
- composite material
- agcuti
- 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.)
- Pending
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Classifications
-
- 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
- B23K1/203—Fluxing, i.e. applying flux onto surfaces
-
- 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
- B23K1/206—Cleaning
-
- 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
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/16—Composite materials, e.g. fibre reinforced
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ceramic Products (AREA)
Abstract
The invention discloses a method for connecting Cf/LAS composite material via an AgCuTi brazing filler metal. The method for connecting Cf/LAS composite material via the AgCuTi brazing filler metal comprises the following steps: step 1, machining the Cf/LAS composite material; step 2, processing the connection surface of the Cf/LAS composite material obtained in the step 1, placing the connection surface of the Cf/LAS composite material in the acetone solution and ultrasonic cleaning; step 3, placing the AgCuTi brazing filler metal between the connection surfaces of the Cf/LAS composite material to be connected, assembling the assembling piece with Cf/LAS composite material/AgCuTi brazing filler metal/Cf/LAS composite material overlapped in sequence; step 4, placing the assembling piece obtained in the step 3 in a vacuum heating furnace, pumping vacuum, electrically heating and cooling; the method for connecting Cf/LAS composite material via the AgCuTi brazing filler metal is mainly used for connecting the Cf/LAS composite material parts being smaller in size or simpler in shape together for obtaining the member being larger in size or complex in shape, the creep resistant property and thermal shock resistance of the high temperature structure can be improved and great application prospect can be achieved.
Description
Technical field
The present invention relates to a kind of method of attachment of composite, specifically a kind of AgCuTi of employing solder connects C
fthe method of/LAS composite.
Background technology
We know, C
f/ LAS is the lithium alumina silicate glass ceramic matric composite that continuous carbon fibre strengthens, and as a kind of advanced composite material (ACM), it has the characteristic of more excellence, comprise high strength, high rigidity, splendid toughness, low-density and good mar proof, become a kind of advantageous composite.Meanwhile, C
fin/LAS composite, the axial thermal expansion coefficient of carbon fiber is almost nil, or even negative thermal expansion, so C
fthe thermomechanical property that/LAS composite has that thermal shock resistance is good, heat shock resistance etc. is excellent, can be applied to high-temperature heat exchanger, window pyrometer, radome, various precision equipment and instrument and be expected to become laser material of new generation.
Although C
f/ LAS composite has the incomparable advantage of other engineering materials many, but its fragility greatly, not impact-resistant weakness seriously hinders its use as a kind of high performance material.When needing the C of large-size or complicated shape
fduring/LAS composite element, need the means by connecting by the C of reduced size or simple shape
f/ LAS composite couples together.
In view of C
fthe comprehensive excellent properties of/LAS composite, by C
f/ LAS composite material connects together and is prepared into composite component, can give full play to their performance advantage, particularly in fields such as thermal structure parts manufactures, has larger application prospect.But riveted joint waits the passive heavier mass of mechanical joining methods, therefore, soldering connects C
fa kind of Perfected process of/LAS composite.Up to the present also not about C
f/the bibliographical information that LAS composite connects.
Summary of the invention
The present invention will solve C
fthe connectivity problem of/LAS composite, and provide a kind of AgCuTi of employing solder to connect C
fthe method of/LAS composite.
The present invention can be reached by following measure.
A kind of AgCuTi of employing solder connects C
fthe method of/LAS composite, is characterized in that step is as follows:
Step one, by C
f/ LAS composite carries out machining, obtains C to be connected
f/ LAS composite;
Step 2, the C to be connected that step one is obtained
fpolishing after the joint face employing sand papering of/LAS composite, then by C
fthe joint face of/LAS composite puts into acetone soln ultrasonic cleaning 5min ~ 10min;
Step 3, AgCuTi solder is placed in C to be connected
fbetween the joint face of/LAS composite, be assembled into C
f/ LAS composite/AgCuTi solder/C
f/the assembly parts that LAS composite superposes successively, wherein the thickness of AgCuTi solder paillon foil is 25um ~ 200um, Ti content is 1% ~ 10%;
Step 4, assembly parts step 3 obtained are placed in vacuum furnace, vacuumize, when vacuum reaches (1.3 ~ 2.0) × 10
-3during Pa, then electrified regulation, to control programming rate be 10 DEG C/min ~ 30 DEG C/min, be warming up to 860 ~ 940 DEG C, then insulation is no more than 30min, then cools, controlled cooling model speed is 3 DEG C/min ~ 10 DEG C/min, and again with stove cooling after being cooled to 300 DEG C, namely completing and adopt AgCuTi solder to connect C
fthe method of/LAS composite.
Machining described in step one of the present invention refers to that slicer cutting machine is processed, as semi-automatic inside diameter slicer, Full-automatic sheet material cutting machine etc.
The sand paper that step 2 of the present invention adopts sand papering used to joint face is 600# to 1000#.
The concentration of the acetone soln described in step 2 of the present invention is >=99.5%.
Ultrasonic cleaning described in step 2 of the present invention adopts clean health board digital ultrasonic cleaning machine (SP-08A) ultrasonic cleaning.
The thickness of the AgCuTi solder paillon foil described in step 3 of the present invention is 50um ~ 150um, Ti content is 3% ~ 7%.
The thickness of the AgCuTi solder paillon foil described in step 3 of the present invention is 100um, Ti content is 4.5%.
In step 4 of the present invention, vacuum furnace vacuum arrives 1.5 × 10
-3pa, controlling programming rate is 20 DEG C/min, and be warming up to 900 DEG C, temperature retention time is 10min, and cooling velocity is 5 DEG C/min.
The present invention can realize C
fthe connection of/LAS composite joint, first, Ti by with C
fthe reactions such as O, Al and Si in/LAS composite, form compound, realize metallurgical connection; Secondly, Ti and carbon fiber generate TiC, improve the mechanical property of joint to a certain extent, by controlling brazing temperature (860 ~ 940 DEG C) and temperature retention time (0 ~ 30min), realization is to the distributed controll of reacting phase in the thickness of conversion zone and joint, and then control microscopic structure and the performance of soldered fitting, successfully achieve C
fthe connection of/LAS composite, the complete densification of joint of acquisition, the defects such as flawless, after tested, the room temperature average shear strength of joint reaches 8.4MPa, and the present invention is mainly used in the C by reduced size or simple shape
f/ LAS composite material parts couples together, and to obtain large-size or complex-shaped component, effectively can improve creep-resistant property and the thermal shock resistance of existing part, have great application prospect.
Accompanying drawing explanation
Fig. 1 is C of the present invention
fthe backscattered electron photo of/LAS composite joint interface microstructure.
Detailed description of the invention
The invention will be further described below:
A kind of AgCuTi of employing solder connects C
fthe method of/LAS composite, is characterized in that step is as follows: step one, by C
f/ LAS composite carries out machining, obtains C to be connected
f/ LAS composite, described machining refers to that slicer cutting machine is processed, as semi-automatic inside diameter slicer, Full-automatic sheet material cutting machine etc., step 2, the C to be connected that step one is obtained
fpolishing after the joint face employing sand papering of/LAS composite, then by C
fthe joint face of/LAS composite puts into acetone soln ultrasonic cleaning 5min ~ 10min, the sand paper adopting sand papering used is that 600# to 1000# waterproof abrasive paper is polished step by step, the concentration of described acetone soln is>=99.5%, and ultrasonic cleaning adopts clean health board digital ultrasonic cleaning machine (SP-08A) ultrasonic cleaning; Step 3, AgCuTi solder is placed in C to be connected
fbetween the joint face of/LAS composite, be assembled into C
f/ LAS composite/AgCuTi solder/C
f/the assembly parts that LAS composite superposes successively, wherein the thickness of AgCuTi solder paillon foil is 25um ~ 200um, Ti content is 1% ~ 10%; The thickness of preferred AgCuTi solder paillon foil is 100um, Ti content is 4.5%; Step 4, assembly parts step 3 obtained are placed in vacuum furnace, vacuumize, when vacuum reaches (1.3 ~ 2.0) × 10
-3during Pa, then electrified regulation, to control programming rate be 10 DEG C/min ~ 30 DEG C/min, be warming up to 860 ~ 940 DEG C, then insulation is no more than 30min, then cools, controlled cooling model speed is 3 DEG C/min ~ 10 DEG C/min, and again with stove cooling after being cooled to 300 DEG C, namely completing and adopt AgCuTi solder to connect C
fthe method of/LAS composite, in step 4, preferred vacuum furnace vacuum arrives 1.5 × 10
-3pa, controlling programming rate is 20 DEG C/min, and be warming up to 900 DEG C, temperature retention time is 10min, and cooling velocity is 5 DEG C/min.
The present invention can realize C
fthe connection of/LAS composite joint, first, Ti by with C
fthe reactions such as O, Al and Si in/LAS composite, form compound, realize metallurgical connection; Secondly, Ti and carbon fiber generate TiC, improve the mechanical property of joint to a certain extent, by controlling brazing temperature (860 ~ 940 DEG C) and temperature retention time (0 ~ 30min), realization is to the distributed controll of reacting phase in the thickness of conversion zone and joint, and then control microscopic structure and the performance of soldered fitting, successfully achieve C
fthe connection of/LAS composite, and obtain reliable joint.The room temperature shear strength of joint reaches as high as 8.4MPa, and the present invention is mainly used in the C by reduced size or simple shape
f/ LAS composite couples together to obtain large-size or complex-shaped component.
Embodiment 1, a kind of AgCuTi of employing solder connects C
fthe method of/LAS composite, specifically completes according to following steps: one, by C
fthe semi-automatic inside diameter slicer of/LAS composite cuts, and obtains C to be connected
f/ LAS composite; Two, the C to be connected step one obtained
fpolishing after the joint face employing sand papering of/LAS composite, then by C
fthe joint face of/LAS composite puts into acetone ultrasonic cleaning 5min ~ 10min; Three, AgCuTi solder is placed in C to be connected
fbetween the joint face of/LAS composite, be assembled into C
f/ LAS composite/AgCuTi solder/C
fthe assembly parts of/LAS composite, wherein the thickness of AgCuTi solder paillon foil is 25um ~ 200um, Ti content is 1% ~ 10%; Four, the assembly parts that step 3 obtains are placed in vacuum furnace, when vacuum reaches (1.3 ~ 2.0) × 10
-3during Pa, electrified regulation, to control programming rate be 10 DEG C/min ~ 30 DEG C/min, be warming up to 860 ~ 940 DEG C, be then incubated 0min ~ 30min, then controlled cooling model speed be 3 DEG C/min ~ 10 DEG C/min, be cooled to 300 DEG C, and then cool with stove, the present invention adopts AgCuTi solder to connect C
f/ LAS composite, by controlling brazing temperature (860 ~ 940 DEG C) and temperature retention time (0 ~ 30min), to control the distribution of reacting phase in the thickness of conversion zone and joint, and then reach the object controlling joint microstructure and performance, successfully achieve C
fthe connection of/LAS composite, and obtain reliable joint.The room temperature shear strength of joint reaches as high as 8.4MPa.
Embodiment 2, the present embodiment be as different from Example 1: in step 3, the thickness of AgCuTi solder paillon foil is 50um ~ 150um, Ti content is 3% ~ 7%.
Embodiment 3, the present embodiment be as different from Example 1: in step 3, the thickness of AgCuTi solder paillon foil is 100um, Ti content is 4.5%.
Embodiment 4, the present embodiment be as different from Example 1: in step 4, vacuum furnace vacuum arrives 1.5 × 10
-3pa.
Embodiment 5, the present embodiment be as different from Example 1: controlling programming rate in step 4 is 20 DEG C/min.
Embodiment 6, the present embodiment be as different from Example 1: be warming up to 900 DEG C in step 4.Embodiment 7, the present embodiment be as different from Example 1: temperature retention time 5min ~ 20min in step 4.
Embodiment 8, the present embodiment and the various embodiments described above are unlike temperature retention time 10min in step 4.
Embodiment 9, the present embodiment be as different from Example 1: in step 4, cooling velocity is 5 DEG C/min.
Embodiment 10, a kind of AgCuTi of employing solder connects C
fthe method of/LAS composite, specifically completes according to following steps: one, by C
fthe semi-automatic inside diameter slicer of/LAS composite cuts, and obtains C to be connected
f/ LAS composite, wherein, C to be connected
f/ LAS composite gauge is respectively 20mm × 10mm × 3mm and 5mm × 5mm × 5mm; Two, the C to be connected step one obtained
fpolishing after the joint face employing sand papering of/LAS composite, then by C
fthe joint face of/LAS composite puts into acetone ultrasonic cleaning 8min; Three, AgCuTi solder is placed in C to be connected
fbetween the joint face of/LAS composite, be assembled into C
f/ LAS composite/AgCuTi solder/C
fthe assembly parts of/LAS composite, wherein the thickness of AgCuTi solder paillon foil is 100um, Ti content is 4.5%; Four, the assembly parts that step 3 obtains are placed in vacuum furnace, when vacuum reaches 1.5 × 10
-3during Pa, electrified regulation, controlling programming rate is 20 DEG C/min, be warming up to 900 DEG C, be then incubated 10min, then controlled cooling model speed is 5 DEG C/min, be cooled to 300 DEG C, and then with stove cooling, namely completes and adopt AgCuTi solder to connect C
fthe method of/LAS composite.
The C that the present embodiment obtains
fas shown in Figure 1, as seen from Figure 1, adopt the complete densification of joint that present embodiment obtains, the defects such as flawless, achieve C to the backscattered electron photo of/LAS composite joint interface microstructure
fthe reliable connection of/LAS composite.After tested, the room temperature average shear strength of joint reaches 8.4MPa.
Claims (5)
1. one kind adopts AgCuTi solder to connect C
fthe method of/LAS composite, is characterized in that step is as follows:
Step one, by C
f/ LAS composite carries out machining, obtains C to be connected
f/ LAS composite;
Step 2, the C to be connected that step one is obtained
fpolishing after the joint face employing sand papering of/LAS composite, then by C
fthe joint face of/LAS composite puts into acetone soln ultrasonic cleaning 5min ~ 10min;
Step 3, AgCuTi solder is placed in C to be connected
fbetween the joint face of/LAS composite, be assembled into C
f/ LAS composite/AgCuTi solder/C
f/the assembly parts that LAS composite superposes successively, wherein the thickness of AgCuTi solder paillon foil is 25um ~ 200um, Ti content is 1% ~ 10%;
Step 4, assembly parts step 3 obtained are placed in vacuum furnace, vacuumize, when vacuum reaches (1.3 ~ 2.0) × 10
-3during Pa, then electrified regulation, to control programming rate be 10 DEG C/min ~ 30 DEG C/min, be warming up to 860 ~ 940 DEG C, then insulation is no more than 30min, then cools, controlled cooling model speed is 3 DEG C/min ~ 10 DEG C/min, and again with stove cooling after being cooled to 300 DEG C, namely completing and adopt AgCuTi solder to connect.
2. one according to claim 1 adopts AgCuTi solder to connect C
fthe method of/LAS composite, is characterized in that the sand paper that step 2 adopts sand papering used to joint face is 600# to 1000#.
3. one according to claim 1 adopts AgCuTi solder to connect C
fthe method of/LAS composite, is characterized in that the concentration of the acetone soln described in step 2 is>=99.5%.
4. one according to claim 1 adopts AgCuTi solder to connect C
fthe method of/LAS composite, the thickness that it is characterized in that the AgCuTi solder paillon foil described in step 3 is 100um, Ti content is 4.5%.
5. one according to claim 1 adopts AgCuTi solder to connect C
fthe method of/LAS composite, is characterized in that in step 4, vacuum furnace vacuum arrives 1.5 × 10
-3pa, controlling programming rate is 20 DEG C/min, and be warming up to 900 DEG C, temperature retention time is 10min, and cooling velocity is 5 DEG C/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510132521.7A CN104690386A (en) | 2015-03-25 | 2015-03-25 | Method for connecting Cf/LAS composite material via AgCuTi brazing filler metal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510132521.7A CN104690386A (en) | 2015-03-25 | 2015-03-25 | Method for connecting Cf/LAS composite material via AgCuTi brazing filler metal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104690386A true CN104690386A (en) | 2015-06-10 |
Family
ID=53338147
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510132521.7A Pending CN104690386A (en) | 2015-03-25 | 2015-03-25 | Method for connecting Cf/LAS composite material via AgCuTi brazing filler metal |
Country Status (1)
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105195921A (en) * | 2015-11-04 | 2015-12-30 | 哈尔滨工业大学（威海） | Composite solder for connecting Cf/LAS composite and titanium alloy and soldering method |
| CN106007773A (en) * | 2016-05-24 | 2016-10-12 | 哈尔滨工业大学（威海） | Vacuum brazing method for porous silicon nitride ceramic and TiAl based alloy |
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| CN102009239A (en) * | 2010-10-15 | 2011-04-13 | 北京航空航天大学 | Connection method used for carbon based materials and products thereof |
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2015
- 2015-03-25 CN CN201510132521.7A patent/CN104690386A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102009239A (en) * | 2010-10-15 | 2011-04-13 | 北京航空航天大学 | Connection method used for carbon based materials and products thereof |
Non-Patent Citations (4)
| Title |
|---|
| 吴世彪等: "采用Ag-Cu-Ti钎料真空钎焊SiO2f/SiO2复合陶瓷与C/C复合材料", 《材料工程》 * |
| 秦优琼等: "C/C复合材料与TC4合金钎焊接头的组织与性能分析", 《稀有金属材料与工程》 * |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105195921A (en) * | 2015-11-04 | 2015-12-30 | 哈尔滨工业大学（威海） | Composite solder for connecting Cf/LAS composite and titanium alloy and soldering method |
| CN106007773A (en) * | 2016-05-24 | 2016-10-12 | 哈尔滨工业大学（威海） | Vacuum brazing method for porous silicon nitride ceramic and TiAl based alloy |
| CN106007773B (en) * | 2016-05-24 | 2019-06-07 | 哈尔滨工业大学（威海） | A kind of vacuum brazing method of porous silicon nitride ceramic and TiAl-base alloy |
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Application publication date: 20150610 |
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