CN107298535B - A kind of composite connecting method of titanium alloy-K4 glass dissimilar material - Google Patents
A kind of composite connecting method of titanium alloy-K4 glass dissimilar material Download PDFInfo
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- CN107298535B CN107298535B CN201610232794.3A CN201610232794A CN107298535B CN 107298535 B CN107298535 B CN 107298535B CN 201610232794 A CN201610232794 A CN 201610232794A CN 107298535 B CN107298535 B CN 107298535B
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- titanium alloy
- glass
- composite connecting
- connecting method
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C27/00—Joining pieces of glass to pieces of other inorganic material; Joining glass to glass other than by fusing
Abstract
The invention discloses a kind of composite connecting methods of titanium alloy-K4 glass dissimilar material, the titanium alloy after blasting treatment and acid etching is realized into mechanical interlocked combination with K4 glass by the method for vacuum hotpressing, then Field assisted bonding technology is used, apply electric field and promote titanium alloy and adapter glass nearby Ion transfer and interface element diffusion, realizes the metallurgical bonding of metal and K4 glass.Present invention reduces connection required temperatures, reduce weld interval, while reducing the surface requirements that field causes diffusion couple titanium alloy, are finally reached the generation for reducing internal stress, improve the efficiency and weld strength of welding.
Description
Technical field
The invention belongs to the field of metal processing, and in particular to a kind of composite joint side of titanium alloy-K4 glass dissimilar material
Method.
Background technique
Since glass belongs to amorphous material, predominantly oxygen-octahedron reticular structure, there is highly stable electronics to match
Have to very strong chemical stability with metal in the presence of difference substantially to the good jointing of acquisition biggish
Difficulty.Meanwhile K4 glass belongs to one kind of Pyrex, has excellent optical stability, thermal shock resistance and ionic conductivity
Can, therefore it is widely used in optical instrument, sensor and Electronic Packaging field.
Currently, the company of glass and aluminium, copper, kovar alloy is concentrated mainly on for the connection research of glass and metal both at home and abroad
It connects, Tsann-ShyiChern pre-oxidizes kovar alloy under different temperatures and time, finds 700 DEG C, 5~15 min
When, the dense oxidation film (main FeO) with a thickness of 4~7 μm can be formed, oxidation film has good adhesiveness, and may be implemented can
Cut down the secured connection of alloy and glass.Gen Sasakil research confirms the nanocrystalline γ-Al of Al/glass bonded interface2O3
Pinning effect is played, to realize effective connection of Al/ glass.
Since the wetability of Oxide scale on Ti base alloys is poor, traditional method for sealing is difficult to realize titanium alloy and the effective of glass connects
It connects, Piotr Mrozek(Anodic bonding of glasses with interlayers for fully
Transparent device applications) it has studied by Float Glass Surface vacuum evaporation nanoscale Ti film, with Ti
Film is middle layer, and the sealing-in of glass and glass is realized using the method for anodic bonding, but is closed there is no thicker biggish titanium is solved
The problem for causing bonding strength not high due to larger internal stress when gold bullion body and glass anode linkage, simultaneously because connecting
Ti film surface aoxidizes in journey, generates oxidation film, so company of the workpiece strength after connection by oxidation film layer and Ti film matrix
Connect the serious restriction of intensity, limited strength.
Summary of the invention
The purpose of the present invention is to provide a kind of composite connecting methods of titanium alloy-K4 glass dissimilar material.
The technical solution achieved the object of the present invention is:
A kind of composite connecting method of titanium alloy-K4 glass dissimilar material, by the method for vacuum hotpressing by blasting treatment
Mechanical interlocked combination is realized with K4 glass with the titanium alloy after acid etching, is then used Field assisted bonding technology, is applied
Electric field promotes titanium alloy and adapter glass, and nearby Ion transfer and interface element are spread, and realize the metallurgical junction of metal and K4 glass
It closes, reduces connection required temperature, reduce weld interval, to reach the generation for reducing internal stress, improve the efficiency and weldering of welding
Intensity is connect, the specific steps are that:
Decontamination deoxidation film process first is carried out to titanium alloy, then sandblasting and acid etching are carried out to its surface, then by K4
Glass overlays titanium alloy surface, in vacuum hotpressing stove, is evacuated to 2 × 10-3-3×10-3Pa is warming up to 750 DEG C ~ 850
DEG C, 0.5 ~ 1h is kept the temperature, while applying 0.5 ~ 1MPa of pressure, 20 ~ 30min of pressure maintaining, slow cooling is to 400 ~ 500 after pressure maintaining terminates
DEG C, then apply 500 ~ 800V voltage at workpiece both ends, until electric current completely disappears, it is final to realize titanium alloy and K4 glass
Composite joint.
Further, the titanium alloy and K4 glass are block.
Further, titanium alloy is TC4 block, using 250 ~ 300 μm of Al2O3Powder carries out sandblasting to titanium alloy surface
Processing；Use concentration for 5.5-6.0mol/L concentrated hydrochloric acid, the mixed acid corrosive liquid of the 8.5-9.0mol/L concentrated sulfuric acid, in 60 ± 10 DEG C
Lower acid etching 45-70min.
Further, 2 × 10 are evacuated to-3~3×10-3After Pa, 780 DEG C are warming up to, while applying pressure 0.5MPa.
Further, slow cooling applies 600V voltage at workpiece both ends to 450 DEG C after pressure maintaining terminates.
Compared with prior art, the present invention its remarkable advantage is: (1) using vacuum hotpressing, K4 glass on the one hand may be implemented
The close contact of glass and titanium alloy facilitates Ion transfer and elements diffusion during Field assisted bonding, on the other hand, right
After titanium alloy surface carries out sandblasting and acid etching, by vacuum hotpressing, the mechanical interlocked knot of K4 glass and titanium alloy is realized
It closes, is conducive to the bonding strength for improving last weldment.(2) low by Field assisted bonding technical work temperature, weld interval is short
The characteristics of, the influence of workpiece residual stress can be greatly reduced, while improving welding efficiency, realizes the metallurgy of K4 glass and titanium alloy
In conjunction with the bonding strength of raising K4 glass and titanium alloy.(3) vacuum hotpressing may be implemented in the present invention and field causes the continuous work of diffusion
Industry, is truly realized vacuum hot pressing methodology and Field assisted bonding technology is used in combination, so that it is significantly reduced internal stress, the company of raising
Intensity is connect, welding efficiency is promoted.
Detailed description of the invention
Fig. 1 is the composite joint process flow chart of titanium alloy-K4 glass dissimilar material of the present invention.
Specific embodiment
With reference to the accompanying drawing and embodiment the present invention is described in further detail.
Such as Fig. 1, surface clean is carried out to K4 glass and titanium alloy respectively first, then sandblasting and acid are individually carried out to titanium alloy
Erosion processing, then K4 glass is overlayed on titanium alloy, be put into vacuum drying oven and carry out hot-pressing processing, finally carries out field and diffusion is caused to connect
It connects, to realize effective connection of K4 and titanium alloy.
Embodiment 1
First to diameter 60mm, surface decontamination deoxidation film process is carried out with a thickness of the TC4 titanium alloy of 6mm, is then used
250 μm of Al2O3Powder tiltedly carries out the blasting treatment up to 20min to titanium alloy surface, is then placed within 60 DEG C of corrosive liquid
It is impregnated one hour in (concentration is 5.8mol/L concentrated hydrochloric acid and the 8.96mol/L concentrated sulfuric acid), ultrasonic cleaning is further taken out, to same
The K4 glass of size is also cleaned by ultrasonic, and K4 glass is overlayed the surface TC4, is put into vacuum hotpressing stove, vacuum is evacuated to 2
×10-3Pa is warming up to 750 DEG C with the speed of 10 DEG C/min, keeps the temperature 30min, guarantees that workpiece temperature is uniform in furnace, then to workpiece
The pressure for applying 1MPa, after half an hour, in-furnace temperature is down to 450 DEG C so that the speed of 5 DEG C/min is slow, to upper by unloading pressure
The connect cathode of pressure head, the anode that workbench is connect apply voltage 500V, and observation electric current is shown, until electric current completely disappears
Power supply is closed, cools to room temperature with the furnace, observation gained TC4 titanium alloy and K4 glass realize 100% Percentage bound, while connector is cut
Shearing stress can reach 23MPa.
Embodiment 2
It is equally 60mm to diameter, carries out surface decontamination deoxidation film process with a thickness of the round TC4 titanium alloy of 6mm, so
250 μm of Al is used afterwards2O3Powder tiltedly carries out the blasting treatment up to 20min to titanium alloy surface, is then placed within 60 DEG C of corruption
It loses in liquid (concentration is 5.8mol/L concentrated hydrochloric acid and the 8.96mol/L concentrated sulfuric acid) and impregnates one hour, further take out ultrasonic cleaning, it is right
An equal amount of K4 glass is also cleaned by ultrasonic, and glass is overlayed the surface TC4, is put into vacuum hotpressing stove, vacuum is taken out
To 2 × 10-3Pa is warming up to 780 DEG C with the speed of 10 DEG C/min, keeps the temperature 30min, guarantees that workpiece temperature is uniform in furnace, to guarantee
Workpiece deflection and glass fragmentation faced is prevented, apply pressure and be reduced to 0.5MPa, after half an hour, unloading pressure will be warm in furnace
Degree is down to 450 DEG C so that the speed of 5 DEG C/min is slow, and cathode connect to seaming chuck, the anode that workbench is connect applies voltage 500V, sees
It surveys electric current to show, until electric current completely disappears, power supply can be closed, cool to room temperature with the furnace.The same TC4 for carrying out shearing experiment
Strength of joint with K4 glass guarantees the two Percentage bound 100% up to 25MPa.
Embodiment 3
It is 75mm to diameter, carries out surface clean with a thickness of the round TC4 titanium alloy of 8mm, then use 250 μm of Al2O3
Powder tiltedly carries out the blasting treatment up to 20min to titanium alloy surface, and being also positioned at 60 DEG C of corrosive liquid, (concentration is
5.8mol/L concentrated hydrochloric acid and the 8.96mol/L concentrated sulfuric acid) middle immersion one hour, ultrasonic cleaning is further taken out, to an equal amount of
K4 glass is also cleaned by ultrasonic, and glass is overlayed the surface TC4, is put into vacuum hotpressing stove, vacuum is evacuated to 2 × 10-3Pa,
780 DEG C are warming up to the speed of 10 DEG C/min, keeps the temperature 30min, guarantees that workpiece temperature is uniform in furnace, applying pressure is still
0.5MPa, after half an hour, unloading pressure, while in-furnace temperature is down to 450 DEG C so that the speed of 5 DEG C/min is slow, to seaming chuck
Connect cathode, the anode that workbench is connect apply voltage and rise to 600V, and electric current completely disappears, and can close power supply, furnace cooling
To room temperature.Finally obtain 100% Percentage bound and the shear strength of about 28MPa.
Claims (6)
1. a kind of composite connecting method of titanium alloy-K4 glass dissimilar material, which comprises the steps of:
Decontamination deoxidation film process first is carried out to titanium alloy, then sandblasting and acid etching are carried out to its surface, then by K4 glass
Titanium alloy surface is overlayed, in vacuum hotpressing stove, is evacuated to 2 × 10-3-3×10-3Pa is warming up to 750 DEG C ~ 850 DEG C, protects
0.5 ~ 1h of temperature, while applying 0.5 ~ 1MPa of pressure, 20 ~ 30min of pressure maintaining, slow cooling is to 400 ~ 500 DEG C after pressure maintaining terminates, so
Apply 500 ~ 800V voltage at workpiece both ends afterwards, until electric current completely disappears.
2. composite connecting method as described in claim 1, which is characterized in that the titanium alloy and K4 glass is block.
3. composite connecting method as described in claim 1, which is characterized in that titanium alloy is TC4 block.
4. composite connecting method a method according to any one of claims 1-3, which is characterized in that use 250 ~ 300 μm of Al2O3Powder
Blasting treatment is carried out to titanium alloy surface；Use concentration for 5.5-6.0mol/L concentrated hydrochloric acid, the 8.5-9.0mol/L concentrated sulfuric acid it is mixed
Acid corrosion liquid is closed, acid etching 45-70min is carried out to titanium alloy surface at 60 ± 10 DEG C.
5. composite connecting method as described in claim 1, which is characterized in that in vacuum hotpressing stove, be evacuated to 2 × 10-3~
3×10-3After Pa, 780 DEG C are warming up to, while applying pressure 0.5MPa.
6. composite connecting method as described in claim 1, which is characterized in that after pressure maintaining terminates slow cooling to 450 DEG C,
Workpiece both ends apply 600V voltage.
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| CN201610232794.3A CN107298535B (en) | 2016-04-14 | 2016-04-14 | A kind of composite connecting method of titanium alloy-K4 glass dissimilar material |
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| CN201610232794.3A CN107298535B (en) | 2016-04-14 | 2016-04-14 | A kind of composite connecting method of titanium alloy-K4 glass dissimilar material |
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| CN107298535B true CN107298535B (en) | 2019-08-09 |
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| CN110246769B (en) * | 2019-05-10 | 2020-09-11 | 太原理工大学 | Eutectic bonding method based on in-situ metallization of cation conductive metal and glass surface |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101746964A (en) * | 2008-12-19 | 2010-06-23 | 沈阳兴华航空电器有限责任公司 | Titanium alloy and glass sealing process method |
| CN102495438A (en) * | 2011-10-27 | 2012-06-13 | 西北工业大学 | Light reflector mirror blank and preparation method thereof |
-
2016
- 2016-04-14 CN CN201610232794.3A patent/CN107298535B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101746964A (en) * | 2008-12-19 | 2010-06-23 | 沈阳兴华航空电器有限责任公司 | Titanium alloy and glass sealing process method |
| CN102495438A (en) * | 2011-10-27 | 2012-06-13 | 西北工业大学 | Light reflector mirror blank and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| Joining of Soda Lime Silicate Glass TO TI6AL4V Alloy in Air by Controlled Heat Treatments;M.B.Telli;《ACTA PHYSICA POLONICA A》;20150430;第127卷(第4期);第972-975页 * |
| 玻璃与金属连接技术研究进展;李卓然等;《失效分析与预防》;20130430;第8卷(第2期);第123-130页 * |
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