Magnetic nanocrystalline glass solder, preparation method thereof and method for connecting ferrite by using magnetic nanocrystalline glass solder

A technology of glass solder and magnetic nanotechnology, which is applied in glass manufacturing equipment, glass furnace equipment, manufacturing tools, etc., can solve the problems of high connection temperature, contrary to the concept of sustainable development, and high softening temperature of magnetic glass, so as to reduce the connection temperature, The effect of ensuring service stability and good mechanical properties

Active Publication Date: 2021-03-09
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional amorphous glass solder cannot meet the magnetic requirements of the weld because it is not magnetic itself. The magnetic phase generated by the magnetic glass solder after heat treatment can introduce magnetism, so it is the best choice for connecting ferrite
However, the softening temperature of magnetic glass is very high, requiring a higher connection temperature, which is contrary to the sustainable development concept of energy saving

Method used

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  • Magnetic nanocrystalline glass solder, preparation method thereof and method for connecting ferrite by using magnetic nanocrystalline glass solder
  • Magnetic nanocrystalline glass solder, preparation method thereof and method for connecting ferrite by using magnetic nanocrystalline glass solder

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Effect test

specific Embodiment approach 1

[0031] 1. Analytical pure Bi 2 o 3 , CoO, Fe 2 o 3 and H 3 BO 3 Mix according to the mole percentage of 40:25:25:10, melt and cast it in a stainless steel grinding tool at 1200°C and keep it warm for 1h. Magnetic nanocrystalline glass solder.

[0032] 2. Cut the magnetic nanocrystalline glass solder into 1mm-thick solder sheets with a diamond wire saw. Then the 1mm-thick brazing material sheet was polished with #600, #800 and #1200 sandpaper in sequence, and then polished with a diamond polishing agent with a particle size of 1 μm at a speed of 500-600r / min to obtain a brazing filler metal with a thickness of 500 μm. sample.

[0033] 3. Cut the YIG cylindrical base material with a diameter of 9mm into a sample with a thickness of 2mm, and polish the surface of the base metal to be welded with #600, #800 and #1200 sandpaper in turn, and then use a diamond polishing agent with a particle size of 1μm. Polishing at a speed of 500-600r / min, and then pre-treating the surface...

specific Embodiment approach 2

[0038] 1. Analytical pure Bi 2 o 3 , CoO, Fe 2 o 3 and H 3 BO 3 Mix according to the molar percentage of 30:30:30:10, melt and cast it in a stainless steel grinding tool at 1200°C and keep it warm for 1h. Magnetic nanocrystalline glass solder.

[0039]2. Cut the magnetic nanocrystalline glass solder into 1mm-thick solder sheets with a diamond wire saw. Then the 1mm-thick brazing material sheet was polished with #600, #800 and #1200 sandpaper in sequence, and then polished with a diamond polishing agent with a particle size of 1 μm at a speed of 500-600r / min to obtain a brazing filler metal with a thickness of 500 μm. sample.

[0040] 3. Cut the YIG cylindrical base material with a diameter of 9mm into a sample with a thickness of 2mm, and polish the surface of the base metal to be welded with #600, #800 and #1200 sandpaper in turn, and then use a diamond polishing agent with a particle size of 1μm. Polishing at a speed of 500-600r / min, and then pre-treating the surface...

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Abstract

The invention relates to magnetic nanocrystalline glass brazing filler metal, a preparation method thereof and a method for connecting ferrite through the magnetic nanocrystalline glass brazing fillermetal, and belongs to the technical field of ferrite welding. The component of the glass brazing filler metal provided by the invention is xBi2O3-yCoO-yFe2O3-10B2O3 (mol.%, x=30-40 and y=25-35), andthe physical and chemical properties of the glass brazing filler metal are close to those of ferrite. The magnetic brazing filler metal sheet and the base metal obtained after low-temperature glass pre-melting are subjected to composite connection, and structural stability and performance stability of long-term service of the microwave ferrite device are achieved while reliable connection of ferrite and the magnetic performance of a weld joint are guaranteed. According to the method, the unification of the electromagnetic properties of the glass weld joint and the ferrite base metal can be realized, the green concept of energy conservation and sustainable development is met, and the method has important application value for ferrite connection and even microwave device processing.

Description

technical field [0001] The invention relates to a magnetic nanocrystalline glass solder, a preparation method thereof and a method for connecting ferrite using the same, belonging to the technical field of ferrite welding. Background technique [0002] As a magnetic material, ferrite is widely used in high-frequency and microwave fields. With the development of microelectronics technology and the miniaturization of microwave devices, higher requirements are put forward for the connection of ferrite components. On the one hand, it is necessary to ensure that the weld and the base metal have similar dielectric properties and low dielectric loss, and at the same time ensure that the magnetic properties of the weld are similar to those of the ferrite base metal; on the other hand, it is necessary to ensure that the ferrite device has long-term service stability and good mechanical properties. The traditional amorphous glass solder cannot meet the magnetic requirements of the we...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C8/24C03B25/00C03B5/16C04B37/00
CPCC03C8/24C03B5/16C03B25/00C04B37/003C04B2237/10
Inventor 林铁松陈倩倩何鹏林盼盼杜轩宇
Owner HARBIN INST OF TECH
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