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Low-temperature connecting method for K9 glass and titanium metal

A connection method and technology of titanium metal, applied in the field of low-temperature connection between K9 glass and titanium metal, can solve the problems of easy falling off, service life, low bonding strength, etc., and achieve the effects of relieving thermal stress, high work efficiency, and stable process

Active Publication Date: 2015-10-07
HARBIN INST OF TECH AT WEIHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to solve the problems of low bonding strength, easy falling off and short service life after the existing K9 glass and titanium metal are connected at low temperature, the present invention provides a new low-temperature connecting method of K9 glass and titanium metal with high bonding strength after connection and not easy to fall off

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025]Embodiment 1: the steps of this embodiment are as follows: (1) material preparation: take by weight percentage 50% bismuth oxide powder, 15% boron oxide powder, 15% zinc oxide powder, 15% calcium oxide powder and 5% % Ti powder, of which the mass purity of Ti powder is 99.90%, and the particle size is 400 μm; (2) Ball milling: Put the weighed bismuth oxide powder, boron oxide powder, zinc oxide powder, calcium oxide powder and Ti powder into the ball mill together In the tank, the ball-to-material ratio is 18:1, and the filler ratio is 42%. After vacuuming, it is filled with argon, and then the ball mill is 4 hours, and the speed ratio is 200r / min; K9 glass is cryogenically bonded to titanium metal. (3) Put the Ti-containing bismuthate composite solder between K9 glass and titanium metal, the thickness of the Ti-containing bismuthate composite solder is 0.08mm, heat to 450°C under air conditions, and the holding time is 90min. Take it out after cooling to room temperatu...

Embodiment 2

[0026] Embodiment 2: the steps of this embodiment are as follows: (1) material preparation: take by weight percentage 20% bismuth oxide powder, 30% boron oxide powder, 30% zinc oxide powder, 10% calcium oxide powder and 10% % Ti powder, of which the mass purity of Ti powder is 99.95%, and the particle size is 100 μm; (2) Ball milling: Put the weighed bismuth oxide powder, boron oxide powder, zinc oxide powder, calcium oxide powder and Ti powder into the ball mill together In the tank, the ball-to-material ratio is 25:1, and the filler ratio is 55%. After vacuuming, it is filled with argon gas, and then the ball mill is 8 hours, and the speed ratio is 250r / min; K9 glass is cryogenically bonded to titanium metal. (3) Place Ti-containing bismuthate composite solder between K9 glass and titanium metal, the thickness of Ti-containing bismuthate composite solder is 0.005~0.5mm, heat to 600°C under air conditions, and the holding time is After 120 minutes, take it out after cooling ...

Embodiment 3

[0027] Embodiment 3: the steps of this embodiment are as follows: (1) material preparation: take by weight percentage 98% bismuth oxide powder, 0.5% boron oxide powder, 0.5% zinc oxide powder, 0.5% calcium oxide powder and 0.5% % Ti powder, wherein the mass purity of Ti powder is 90%, and the particle size is 100 μm; (2) Ball milling: put the weighed bismuth oxide powder, boron oxide powder, zinc oxide powder, calcium oxide powder and Ti powder into the ball mill together In the tank, the ball-to-material ratio is 10:1, and the filler ratio is 30%. After vacuuming, it is filled with argon, and then the ball milling is 1.1 hours, and the speed ratio is 250r / min; K9 glass is cryogenically bonded to titanium metal. (3) Place the Ti-containing bismuthate composite solder between K9 glass and titanium metal, the thickness of the Ti-containing bismuthate composite solder is 0.005~0.5mm, heat it to 500°C under air conditions, and the holding time is After 120 minutes, take it out af...

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Abstract

The invention relates to connection of glass and metal, in particular to a low-temperature connecting method for K9 glass and titanium metal. The low-temperature connecting method is characterized by comprising the following steps: (I) preparing powdered composite solder of bismuthate containing an active element Ti; (II) placing the composite solder between the titanium metal and the K9 glass; (III), getting out a sample and then putting the sample into a vacuum connecting furnace, wherein direct-current electric fields with voltage of 100 to 700V are arranged in the vacuum connecting furnace, the temperature of the vacuum connecting furnace is 300 to 600 DEG C, pressure of 5 to 40Pa perpendicular to the sample plane is applied, and the degree of vacuum is 10<-3> to 10<-2> Pa; and keeping the temperature not more than 120 minutes to realize an effective connection of the K9 glass and the titanium metal, cooling the sample to the room temperature along with the furnace, then, getting out the sample, thereby completing low-temperature connection of the K9 glass and the titanium metal. The low-temperature connecting method has the advantages of being simple to operate, green and environmentally-friendly, high in working efficiency, stable in process, and the like.

Description

technical field [0001] The invention relates to the connection of glass and metal, in particular to a low-temperature connection method of K9 glass and titanium metal, which is especially suitable for optical windows, observation windows and the like. Background technique [0002] During the assembly and use of the optical window, the window needs to be reliably connected to the metal substrate at its end and the glass splicing, and to suppress stray light inside the connection window and eliminate the thermal gradient caused by high-speed flight and air friction at the connection of the plate, etc. question. At present, the commonly used metal matrix is ​​titanium metal, which has the advantages of high specific strength, specific stiffness, good oxidation resistance and excellent high-temperature and low-temperature mechanical properties, and has broad application prospects in aviation, aerospace, military and civil fields. [0003] There are great differences between K9...

Claims

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Application Information

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IPC IPC(8): C03C27/00
Inventor 王美荣宋晓国冯吉才
Owner HARBIN INST OF TECH AT WEIHAI
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